-;------------------------------------------------------------------------------
-;---------------------- NEMESIS -----------------------------------------------
-;------------------------------------------------------------------------------
-; >>> NEMESIS <<< Version 0.95 BETA by SHIAR
-; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-; Title : Nemesis
-; Version : 0.95
-; Release Date : 22.X.99
-; Filename : nemesis.86p (5321)
-; Author(s) : Shiar
-; Email Address : shiar0@hotmail.com
-; ICQ ; #43840958
-; Web Page : come.to/shiar
-; Description : cool arcade-shoot-em-up-game (release 12/99)
-; Where to get this game : www.ticalc.org
-; Other games by author : N/A
-
-; ABOUT: This source should only be used for learning practises, do not
-; alter it, and certainly do not distribute an altered version!!
-; NOTE: &&& marks uncertainties or things to optimize
-
-;---------------------- nemesis.z80 start -------------------------------------
-
+;-----------------------------------------------------------------------------
+;---------------------------- N E M E S I S --------------------------------
+;------------------------------------------------ cool arcade-shoot-em-up-game
+
+; --------- Version - 1.01.314 ---------
+; --------- Release Date - 2002 March 14 ---------
+; --------- Author(s) - Shiar ---------
+; --------- Email Address - nemesis@shiar.org ---------
+; --------- Web Page - www.shiar.org ---------
+; --------- Description - cool shoot-em-up arcade ---------
+; --------- Where to get this game - shiar.org ---------
+; --------- Other games by author(s) - Wormy ---------
+
+; ----------------------------------------------------------------------
+; --- This source should only be used for learning practises, do not ---
+; --- alter it, and certainly never distribute an altered version!! ---
+; ----------------------------------------------------------------------
+
+;---------------------- nemesis.z80 start ------------------------------------
+
+ #define TI86 ;TI83
+
+ #define cal call ;just to make it harder for you to understand
+ #define rcl call ;RemoteCaLl / RomCalL
+ #define rjp jp ;RomJumP
+ #define dnz djnz ;Dec&Jump while NonZero becomes Do w.Non-Zero
+ #define psh push ; >:->
+
+#ifdef TI83 ;-----------------------------------------------------------------
+#include "ion.inc" ;standard TI-83 ROMcalls (Ion shell)
+
+ #define halt or a
+
+scrwidth = 12
+
+#define teacherkey ;compiled with teacher key: 92 bytes extra
+
+VIDEO_MEM = plotsscreen
+dispbuffer = VIDEO_MEM ;virtual screen (MUST be mod$400=0!!)
+
+BUSY_OFF = _indicatorOff
+_curRow = currow
+_curCol = curcol
+_penCol = pencol
+;_clrLCD = _clrlcdf ;clears screen
+_clrScrn = _clrscrf ;also clears TEXT_MEM
+_clrWindow = _clrscrf
+GET_KEY = $4014 ;_getcsc
+CONTRAST = contrast
+_dispahl = _disphl
+UNPACK_HL = $4008 ;_divhlby10
+CP_HL_DE = _cphlde
+Lpi = $C4
+Lneg = $1A
+K_DOWN = 1
+K_LEFT = 2
+K_RIGHT = 3
+K_UP = 4
+K_ENTER = 9
+K_DEL = $20
+K_ALPHA = $30 ;48
+K_F1 = $35 ;Y=
+K_SECOND = $36 ;54
+K_EXIT = $37 ;Mode
+kEnter = 5
+kGrMenu = 44
+
+storepos = saferam2 ;<1024 bytes needed to store things
+
+ .org progstart
+
+ ret
+ jr nc,init
+Title: .db "Nemesis 83 TEST by SHIAR",0
+#endif ;----------------------------------------------------------------------
+
+
+#ifdef TI85 ;-----------------------------------------------------------------
+#include "usgard.h" ;usgard shell
+
+scrwidth = 16
+
+;#define clearbuffer ;clears the display buffer after usage
+;#define fixkeys ;fixes left+down bug: 47 bytes extra size
+;#define teacherkey ;compiled with teacher key: 92 bytes extra
+;#define story ;storyline shown (w/ neat effect): 871 bytes
+;#define shiscore ;save hiscore/savegame
+;#define invertable
+
+dispbuffer = $8400 ;$C9FA ;virtual screen (MUST be mod$400=0!!)
+ ;8100-8C00
+;_clrWindow = $4a86 ;_clrLCD and _clrScrn
+;_ex_ahl_bde = $45f3 ;exchange values between AHL and BDE
+;_shracc = $4383 ;like _shlacc but just the opposite :P
+;_dispahl = $4a33 ;display value in ahl <100000 (cheap TI)
+;_asapvar = $d6fc ;our own variable name (likely "nemesis")
+
+storepos = TEXT_MEM ;<1024 bytes needed to store things
+saferam1 = DELC_MEM
+
+ .org 0
+Title: .db "Nemesis 85 Alpha" ;Usgard description
+; .db " - 4 Nunome",0 ;present
+ .db " by SHIAR",0 ;author
+#endif ;----------------------------------------------------------------------
+
+
+#ifdef TI86 ;-----------------------------------------------------------------
#include "asm86.h"
#include "ti86asm.inc" ;standard ti86 romcalls
-#include "ti86abs.inc" ;used to save hiscores and so
-#include "ti86un .inc" ;_dispahl and _shracc
+#include "ti86abs.inc" ;used to save hiscores and stuff
- .org _asm_exec_ram
+scrwidth = 16
-#define cal call ;just to make it harder for you to understand
-#define psh push ; ^:D
-
-TEXT_MEM = _textShadow ;167 bytes ($A7): C0F9-C1A0
-
-storepos = $8000 ;120 OF 165
-storepos2 = $8100 ;141 OF 167
-
-;---------------------- in-game vars ------------------------------------------
-
-temp1 = storepos ;$C0FA-C0FB ;temp (2 bytes) bullet
-
-just_fired = storepos+2 ; +2 ;counts how long a blast lasts
-curline = storepos+2 ; +2 ;used to display SFX
-menuitem = storepos+2 ; +2 ;used to store menu location
-hiscorepos = storepos+2 ; +2
-RanPos = storepos+3 ; +3 ;used for making random values
-timer = storepos+4 ; +4 ;frame counter
- ;--------YOU
-x = storepos+5 ; +5 ;your ship's position
-y = x+1 ; +6 ;your y-pos
-firex = y+1 ; +7 ;(1 byte)
-firey = firex+1 ; +8 ;(1 byte)
- ; **
- ;--------LEVEL
-eventtime = storepos+10 ;+10 ;enemy frequency
-eventleft = eventtime+1 ;+11 ;nr. of enemies still to come
-nextevent = eventleft+1 ;+12 ;time to next event
-pickuptimer = nextevent+1 ;+13 ;counts when to place a pickup
-level_enemy = pickuptimer+1 ;+14 ;enemy type
-level_move = level_enemy+1 ;=
-level_fire = level_move+1 ;+16
- ; **
- ;--------OBJECTS
-spacespace = storepos+19 ;+19
-groundinfo = spacespace+1 ;+20
-groundpos = groundinfo+1 ;+21 $10
-ceilingpos = groundpos+16 ;+37 $10
- ; ^^ ;--------STARS
-stars1 = ceilingpos+16 ;+53
-stars2 = stars1+1 ;+54
-nrstars1 = 7
-starx1 = storepos+55 ;+55
-nrstars2 = 7
-starx2 = starx1+(nrstars1*2) ;+69
- ; ^^ ;--------MULTIPLES
-mx = starx2+(nrstars2*2) ;+83 ;position of multiple#1
-my = mx+1 ;+84 ;multiple y-pos
-m2x = my+1 ;+85
-m2y = m2x+1 ;+86
-your_locpos = m2y+1 ;+87 ;position in your_prevpos tabl
-your_prevpos = your_locpos+1 ;+88 ;save previous positions (32d)
-
-;^-----------------------------------<1 ;-120=$78
-
-nrenemies = 10 ;max. nr of enemies
-enemies = storepos2 ; +0 ;info about each enemy (4byt)
-add2enemy = nrenemies*4 ;size of "enemies"
-enemiesxtra = enemies+add2enemy ;+40 ;more info 'bout enemies (4)
-
-nrybuls = 10
-ybullets = enemiesxtra+add2enemy ;+80 ;60 bytes = 20(state,x,y)
-nrebuls = 10
-ebullets = ybullets+(nrybuls*3) ;+110 ;30 bytes = 10(state,x,y)
-
-ybuls = ebullets+(nrebuls*3) ;+140
-
-;^-----------------------------------<2 ;-141=$8D
-;level_move:
-; %1 (directfire) 1 (ground) 1 (ceiling) 1 (diagfire) 1111 (move)
-;enemies:
-; %111111 (HP left) 11 (00=no enemy 01=exploding 10=normal 11=moving)
-; %11111111 (ship type or explosion frame) %11111111 (x) %11111111 (y)
-;enemiesxtra:
-; $11 (move) $11 (fire) $11 (bullettype)
+;#define clearbuffer ;clears the display buffer after usage
+#define fixkeys ;fixes left+down bug: 47 bytes extra size
+#define teacherkey ;compiled with teacher key: 92 bytes extra
+;#define story ;storyline shown (w/ neat effect): 871 bytes
+#define shiscore ;save hiscore/savegame
+#define invertable
+
+dispbuffer = $8400 ;$C9FA ;virtual screen (MUST be mod$400=0!!)
+ ;8100-8C00
+_clrWindow = $4a86 ;_clrLCD and _clrScrn
+_ex_ahl_bde = $45f3 ;exchange values between AHL and BDE
+_shracc = $4383 ;like _shlacc but just the opposite :P
+_dispahl = $4a33 ;display value in ahl <100000 (cheap TI)
+_asapvar = $d6fc ;our own variable name (likely "nemesis")
-;---------------------- introduction ------------------------------------------
+storepos = _asm_exec_ram+7800 ;<1024 bytes needed to store things
+ ;$F5C0..F9C0 (safe mem D748..FA6F)
+
+ .org _asm_exec_ram
nop ;hello yas/ase/rascall/whathever
jp init ;here's the program, but first: a description
.dw Title ;pointer to description (all shells)
.dw Icon ;pointer to YAS icon
-Title: .db "Nemesis v0.95 by Shiar",0
+Title: .db "Nemesis v1.0.C21" ;Ashell/Rascall/YAS/any shell description
+; .db " - 4 Nunome",0 ;present
+ .db " by SHIAR",0 ;author
-Icon: .db 8,1 ;icon for YAS: width = 1byte; height = 9bytes
+Icon: .db 8,1 ;icon for YAS: width = 1byte; height = 7bytes
.db %11100000 ; ███
.db %01111000 ; ████
.db %00111110 ; █████
.db %00111110 ; █████
.db %01111000 ; ████
.db %11100000 ; ███ ;recommend 80x50 screen mode
- .DB 0 ;clear stupid YAS-line
+ .db 0 ;YAS 0.92 compatibility
+#endif ;----------------------------------------------------------------------
+
+;---------------------- in-game vars -----------------------------------------
+
+just_fired = storepos ; +0 ;counts how long a blast lasts
+#ifdef shiscore
+hiscorepos = storepos ; +0 ;entering hiscore name
+#endif
+
+x = storepos+1 ; +1 ;your ship's position
+y = x+1 ; +2 ;your y-pos
+firex = y+1 ; +3 ;(1 byte)
+firey = firex+1 ; +4 ;(1 byte)
+
+eventleft = firey+1 ; +5 ;nr. of enemies still to come
+level_enemy = eventleft+1 ; +6 ;enemy type
+level_info = level_enemy+1 ; +7 ;ground (%0) present
+spacespace = level_info+1 ; +8
+stars1 = spacespace+1 ; +9 ;slow stars byte (<< %1)
+stars2 = stars1+1 ; +10 ;fast stars byte (<<< %1)
+groundpos = stars2+1 ; +11 $10
+nrstars1 = 10
+starx1 = groundpos+16 ; +27 ;20
+nrstars2 = 10
+starx2 = starx1+(nrstars1*2) ; +47 ;20
+
+mm = 4 ;max. number of multiples
+your_prevpos = starx2+(nrstars2*2) ; +67 ;14*mm+2 ;previous positions
+
+
+enemies = your_prevpos+(mm*14+4);+125 ;info about each enemy
+enemysize = 11 ;infobytes per enemy
+nrenemies = 16 ;max. nr of enemies
+
+#ifdef TI86
+ybullets = enemies+(nrenemies*enemysize) ;60 bytes = 20(state,damg,x,y)
+#else
+ybullets = saferam1
+#endif
+nrybuls = 128 ;+301
+ebullets = ybullets+(nrybuls*4) ;+813 ;30 bytes = 10(state,x,y)
+nrebuls = 48
+lvlenemies = ebullets+(nrebuls*3) ;-957
-;---------------------- init --------------------------------------------------
+;enemies:
+; [HP64] [000000:HP left 00:(00=no enemy 01=exploding 1X=normal)]
+; [ship sprite (DW!) or explosion frame] [x] [y] [movetype]
+; [movecounter] [firecounter] [firefreq] [firetype]
+
+;---------------------------- save data --------------------------------------
+
+;#ifdef shiscore
+storehi_start:
+hiscore .dw 0 ;default hiscore
+hiname .db "by shiar",0,0 ; " " name
+storehi_end:
+;#endif
+
+invertmode: cpl ;/or a ;saves B<>W mode setting cpl
+
+storesave_start: ;--SAVED GAME-- defs:
+your_ship .dw spr_ship03 ;your sprite (^invertmode^) sprs1
+level .db 4 ;level number 1
+levelp .dw level05 ;pointer to level data lev00
+pickuptimer .db 4 ;counts when to place a pickup 4
+your_score .dw 0 ;current score 0
+your_pickup .db 3 ;pickups already picked up 0
+your_occ .db 0 ;0=normal 1..16=exploding 0
+your_shield .db 0 ;invincibility left 0
+your_armor .db 24 ;HP left 24
+your_lives .db 3 ;lives left 3
+your_weapon .db 3 ;current weapon upgrade 0
+your_multiples .db 0 ;multiples present 0
+your_extra .db 0 ;extra beam present 0
+hardcore .db 0 ;hardcore mode if non-0 0
+storesave_end:
+
+time2invert: .db 0 ;time until b<>w switch (0 at startup)
+;45+31=76
+;---------------------- init -------------------------------------------------
+
+#ifdef fixkeys
+int_handler: ;new interrupt proc
+ ex af,af' ;just af only (no need for exx)
+ in a,($03) ;read bit 3 port 3
+ bit 3,a ;is ON key pressed?
+ jp z,$0039 ;no: np, return
+ res 0,a ;yes: then we have a problem (freeze), so...
+ out ($03),a ;...mask the ON key interrupts!
+ jp $0039 ;all done, return
+int_end: ;(size 15 bytes)
+#endif
+
+init: rcl BUSY_OFF ;turns the run-indicator off, obviously
+#ifdef TI83
+ ld (iy+13),0
+ res 6,(iy+9) ;TI-83 uses statmem
+ set textwrite,(iy+20) ;write text to gbuf
+ rcl _clrLCD
+#endif
+#ifdef TI86
+ res 2,(iy+13) ;don't scroll the screen
+ rcl _flushallmenus ;remove TI-86 menus
+ rcl _clrScrn ;clean the screen
+ ld hl,$8200
+ ld c,10
+_clrmem:
+ ld b,0
+clrmem: ld (hl),-1
+ inc hl
+ djnz clrmem
+ dec c
+ jr nz,_clrmem
+#endif
-StartFix:
+#ifdef fixkeys
+FixKeys: ;fixes some key problems like left+down bug
im 1
- ld hl,$D400
- ld de,$D401
+ ld a,$D4
ld bc,$0100
- ld (hl),$D3
- ldir
- ld hl,int_handler
- ld de,$D3D3
+ ld h,a
+ ld l,c ;ld hl,$D400 (user silent link routine space)
+ ld d,a
+ ld e,b ;ld de,$D401
+ dec a ;ld a,$D3
+ ld (hl),a
+ ldir ;fill $D400-D500 with $D3s (slink/user on)
+ ld hl,int_handler ;new interrupt handler
+ ld d,a
+ ld e,a ;ld de,$D3D3
ld bc,int_end-int_handler
- ldir
- ld a,$D4
+ ldir ;load new handler at ($D3D3)
+ inc a ;ld a,$D4
ld i,a
im 2
- ret
+#endif
-int_handler:
- ex af,af'
- in a,($03)
- bit 3,a
- jp z,$0039
- res 0,a
- out ($03),a
- jp $0039
-int_end:
-
-init: cal BUSY_OFF ;turns the run-indicator off, obviously
- cal _clrScrn ;clean the screen
- xor a ;<ld a,0>: reset:
- ld (iy+13),a ;don't affect TEXT_MEM and don't scroll screen
- ld (_asapvar+1),a ;Asm( thinks it's the first time it runs Nems.
- cal StartFix
-
- ld a,(CONTRAST) ;load current contrast level
- cp $1f ;if already at maximum...
- jr z,skipdarken ;...then skip level increase
- inc a ;otherwise increase contrast level
-skipdarken:
- out (2),a ;set it
-
-;---------------------- main menu ---------------------------------------------
+;---------------------- main menu --------------------------------------------
LogoPut:
xor a ;white bitmask (a=0)
- ld b,16 ;one line
ld hl,logo_nemesis ;from...
- ld de,VIDEO_MEM+16 ;...to one line from top
+ ld de,VIDEO_MEM+scrwidth;...to one line from top
+#ifdef TI86
+ ld b,e ;ld b,16: one line
+#else
+ ld b,scrwidth
+#endif
AboveLogo:
ld (de),a ;clear/n byte
inc de ;next
- djnz AboveLogo ;repeat for the first line
-
- ld bc,16*19 ;logo size
+ dnz AboveLogo ;repeat for the first line
+ ld bc,scrwidth*19 ;logo size
ldir ;display one line of logo
-; ld hl,GRAPH_MEM ;cleared line
-; ld bc,16 ;size=one line
-; ldir ;also clear one line below the logo
-
-; ld a,-1 ;first line is -1+1=0
-; ld b,21 ;with first 21 lines:
-; cal DoSFX ;do special effect &&&skip
-
- ld hl,VIDEO_MEM+(16*$39)+4 ;$39 rows down, 4 cols right (4*8=$20)
- ld b,8 ;draw 8x one byte = 8*8 = 64 pixels wide
+ ld hl,scrwidth*$33+VIDEO_MEM ;$33 rows down
+ ld b,scrwidth*7 ;draw black 7 lines
ld a,%11111111 ;horizontal line mask
underline:
ld (hl),a ;draw one piece of the divider-line
inc hl ;move right (8 pixels = 1 byte)
- djnz underline ;repeat
-
- set 3,(iy+5) ;set white on black
- ld hl,$3320 ;near the bottom of the screen
- ld (_penCol),hl
- ld hl,txt_about ;display version and author (yes, that's me!)
- cal _vputs ;useful procedure if you want to display somtn
- res 3,(iy+5) ;return to default black on white
+ dnz underline ;repeat
+#ifdef TI83
+ cal fastCopy ;draw buffer on screen
+#endif
- ld hl,$3a1e ;below previous stuff
+ ld hl,_txt_email ;at the very bottom of tha screen
ld (_penCol),hl
ld hl,txt_email ;hey, my e-mail address so SEND ME SOMETHING!!
- cal _vputs ;VERY important, so display in small font ?:}
+ rcl _vputs ;VERY important, so display in small font ?:}
+
+ set 3,(iy+5) ;set white on black
+ ld de,_txt_about ;near the bottom of the screen
+ ld (_penCol),de ;hl=txt_email++=txt_about
+ rcl _vputs ;display version + me
+ res 3,(iy+5) ;return to default black on white
dispmenu:
ld de,$0304
ld (_curRow),de
- ld hl,txt_menu1
- cal _puts
+ ld hl,txt_menu1 ;NEW GAME
+ rcl _puts
ld de,$0305
ld (_curRow),de
- ld hl,txt_menu2
- cal _puts
-
- xor a
- ld (menuitem),a
+ ld hl,txt_menu2 ;CONTINUE GAME
+ rcl _puts
menuloop:
- ld a,(menuitem)
- ld h,$01
+ ld a,0 ;current menu item (0 or 1); 0 by default
+menuitem =$-1
+ ld h,$01 ;selector (*) x-coord. = 1
add a,4
- ld l,a
-
- ld a,5
- ld (_curRow),hl
- cal _putc
-
- ld a,(menuitem)
- ld h,$01
- sub 5
- neg
- ld l,a
-
- ld a,32
- ld (_curRow),hl
- cal _putc
-
- halt \ halt \ halt \ halt
-
- cal GET_KEY ;wait for keypress
- cp K_UP
- jr z,menuchange
- cp K_DOWN
- jr z,menuchange
+ ld l,a ;y-coord. = sel menu item + 4 = 4/5
+ ld (_curRow),hl ;set position
+ ld a,5 ;'*'
+ rcl _putmap ;mark selected menu item
+
+ ld a,l ;y-pos 4/5
+ xor 1 ;invert (4=5; 5=4)
+ ld (_curRow),a ;set new row position
+ ld a,32 ;' ' (empty, just remove any * present)
+ rcl _putc
+
+ cal getsomekeys ;read keys (z if enter/2nd pressed)
+ ld hl,menuitem
+ jr z,start_tha_freakin_game
cp K_EXIT
- jp z,game_over_nopop
- ld hl,_invert
- cp K_F1
- cal z,undo_invert
- cp K_F2
- cal z,do_invert
- cp K_ENTER
- jr nz,menuloop
-
- ld a,(menuitem)
- dec a
- cal z,Story
- cal New_game ;prepare level
- jr game_main_loop
-
+ jr z,menuexit ;exit goes to the g/o screen (first score=0)
+ cp K_UP
+ jr z,menuchange ;up changes selected menu item
+ cp K_DOWN ;down as well
+ jr nz,menuloop ;anything else just loops
menuchange:
- ld a,(menuitem)
- xor 1
- ld (menuitem),a
- jr menuloop
-
-do_invert:
- ld (hl),$EE
- ret
-undo_invert
- ld (hl),$E6
+ ld a,(hl) ;(menuitem)
+ xor 1 ;0=1; 1=0
+ ld (hl),a ;set new menu item
+ jr menuloop ;continue looping
+
+start_tha_freakin_game:
+ ld a,(hl) ;(menuitem)
+ dec a ;new game=0; so that gives -1 = NZ
+ jp nz,New_game ;NEW GAME
+ jp samelevel ;CONTINUE: game_main_loop
+
+menuexit:
+ ld hl,0 ;reset score
+ ld (your_score),hl ;(prevents hiscore while never played)
+ jp game_over ;and go to game over screen
+
+do_invert: ;invert screen (b<>w)
+ psh hl
+ psh af ;can't destroy b
+ ld hl,_invert
+ ld a,$98
+ xor (hl) ;$2F (cpl) <-> $B7 (or a)
+ ld (hl),a
+ pop af
+ pop hl
ret
-;------------------------------------------------------------------------------
-;---------------------- game loop ---------------------------------------------
-;------------------------------------------------------------------------------
+#ifdef invertable
+mode_invert:
+ ld hl,invertmode ;change invert mode (will be stored)
+ ld a,$98
+ xor (hl) ;$2F (cpl) <-> $B7 (or a)
+ ld (hl),a
+ ld de,1
+ psh de ;size
+ psh hl ;dest (invertmode)
+ ld hl,4+invertmode-_asm_exec_ram
+ psh hl ;src
+ jp storesmtn
+#endif
+
+;-----------------------------------------------------------------------------
+;---------------------- game loop --------------------------------------------
+;-----------------------------------------------------------------------------
game_main_loop: ;REPEATS FROM HERE EVERY FRAME
ld hl,timer ;update time
inc (hl) ;increase by 1
- ld b,(hl) ;new time, save for rand# upd. (no flag change)
- jr nz,updaterandom ;continue when new time <> 0
- ld hl,1 ;once every 256 frames, increase score by 1
- cal scoreInc ;do it
-
-updaterandom:
- ld hl,RanPos ;random counter
- ld a,r ;add r register to randomize
- add a,(hl) ;add previous random value
- add a,b ;even more random by adding timer
- ld (hl),a ;save even more random value back
Clear_screen:
- ld hl,GRAPH_MEM ;move from (hl) = top left
- ld (hl),$00 ;first pixel will be copied all over the screen
- ld de,GRAPH_MEM+1 ;(de) = next pixel, thus clearing whole screen
- ld bc,896 ;loop 896 times = (128/8) * (64-8 for scorebar)
- ldir ;clear!
-
- ld a,(timer)
- and %11
+ ld hl,dispbuffer ;move from (hl) = top left
+ ld (hl),0 ;first pixel will be copied all over the screen
+ ld de,dispbuffer+1 ;(de) = next pixel, thus clearing whole screen
+ ld bc,scrwidth*56-1 ;loop 896 times = (128/8) * (64-8 for scorebar)
+ ldir ;all clear!
+
+ ld a,0 ;current frame/turn 0-255
+timer =$-1
+ and %11 ;a=0 once every 4 turns
jr z,movestarsdone ;don't move stars once every 4 frames
-
cal movestars1 ;move the stars on the FRONT layer
cal movestars2 ;move the distant stars
-
movestarsdone:
ld a,(stars1) ;star positions (the missing byte...)
ld b,nrstars1 ;how many stars? now we know.
ld hl,starx1 ;points to the position of the stars
cal DisplayStars ;display front layer stars
-
ld a,(stars2) ;weren't you paying attention five lines ago?
ld b,nrstars2 ;that many?! whow!
ld hl,starx2 ;and there they are
cal DisplayStars ;use the same procedure to display back layer
- ld a,(level_move) ;level info
- and %01100000 ;isolate ground&ceiling
- jr z,game_stuff ;both non-present
- and %00100000 ;bit representing the presence of any ceiling
- cal nz,Handle_ceiling ;scroll the ceiling (if any)
- cal Handle_ground ;scroll the ground
+ ld a,(level_info) ;level info
+ rra ;ground present? (%1)
+ jr nc,game_stuff ;no, continue game
+ cal Handle_ground ;scroll the ground and check if we're dead
game_stuff:
+ cal Handle_Ship ;move you
ld a,(your_occ) ;are you 100% OK?
or a ;a=0??
jr nz,_gamestuff1 ;then don't check for movements/fires/...
- ld a,(level_move) ;the same level info
- and %01100000 ;isolate ground&ceiling again
- jr z,check_keys ;no ceiling nor ground
- and %00100000 ;this bit will tell us if there is a ceiling
- cal nz,CheckCeiling ;if there is, check it
- cal CheckGround ;check for collision with the ground
-
check_keys:
- cal GET_KEY
- cp K_GRAPH
- cal z,Teacher
-
- ld a,%00111111 ;function keys (MORE,EXIT,2ND,F1,F2,F3,F4,F5)
+ ld a,%10111111 ;function keys (MORE,EXIT,2ND,F1,F2,F3,F4,F5)
out (1),a ;ask for them
nop \ nop ;delay 8 clocks
- in a,(1) ;get zem!
+ in a,(1) ;gettem!
check_exitkey:
bit 6,a ;test bit 6 = exit-key = EXIT
- jp z,game_over_nopop ;<exit> pressed, so be it
+ jp z,game_over ;<exit> pressed, so be it
check_morekey: ;another unused label... poor compiler
bit 7,a ;test bit 7 = more-key = PAUSE
+ psh af
cal z,Pause ;yes, go to pause
+ pop af
check_firekey:
bit 5,a ;test bit 5 = 2nd-key = FIRE
ld hl,check_selkey ;where to continue after executing Fire_bullet
psh hl ;push hl on stack (instead of cal Fire_bullet)
- jp z,Fire_bullet ;fire smtn (bulletstorplasermultiples+stuff..)
+ jp z,Fire_bullet ;fire smtn (bulletstaillasermultiples+stuff..)
pop hl ;no cal to Fire_bullet made, so pop stack
ld hl,just_fired ;no:
- ld (hl),0 ;reset just_fired
+ ld (hl),5 ;able to fire (five turns = laser duration)
+laserdur =$-1 ;SMC laser duration
check_selkey:
ld a,%01011111 ;look at first column of keys (ALPHA to STO)
- out (1),a ;gimme
- nop \ nop ;what's taking you so long
- in a,(1) ;at last... our precious keyzzz...
- ;old: <bit 7,a \ cal z,select> now see this:
+ out (1),a
+ in a,(1) ;our precious keys
+
+#ifdef teacherkey ;should we check for the teacherkey?
+ bit 6,a ;'bout the GRAPH key...
+ cal z,Teacher ;you didn't _press_ it, did you?!?
+#endif
+
rla ;test bit7 so we know f ALPHA has been pressed
cal nc,select ;yeppy, select the currently selected upgrade
cal Enemies_hit ;check for collision with enemies
+ cal inc_weapdamage
_gamestuff1:
- cal Handle_Ship ;move you
- cal Handle_bullets ;move your bullets
- cal Handle_torp ;move your torpedo
-
cal Handle_enemies ;move enemies
+
+ cal Handle_bullets ;move your bullets + check for hits
cal Enemy_bullets ;move enemy bullets
cal Level_event ;insert enemies
cal Display_Screen ;display all
- halt ;delay
- jp game_main_loop ;LOOP
+#ifdef TI86
+delay:
+ halt ;delay and preserve batteries :)
+#else ;halt doesn't work on TI-83
+ ld b,0
+delay:
+ xor 1
+ and 1
+ jr z,delay
+ dnz delay
+#endif
+ jp game_main_loop ;LOOP ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+;------- weapon -------
+
+inc_weapdamage:
+ ld a,0
+weapincs =$-1
+ inc a
+ cp 97 ;max. 96 times (=96/16=6 increases)
+ ret nc ;return if already maxed
+ ld (weapincs),a ;save new incs
+
+ and %11110000 ;clear last 4 bits so no cf when rotating
+ ;btw: AND resets cf
+ rra ;rotate acting as shift (srl a) but just 1B
+ rra
+ rra
+ rra ;increase once just every 16 turns
+ ld b,a ;times to increase
+incthedamage:
+ add a,1 ;increase damage for one increase
+weapdaminc =$-1
+ dnz incthedamage ;a=total increase damage
+ ld b,1 ;minimal damage
+weapdamage =$-1
+ add a,b ;a=total damage
+ ld (curweapdamage),a ;safe the current damage
+
+
+disp_charge: ;display charge bar
+#ifdef TI86
+ ld hl,(58*scrwidth)+VIDEO_MEM+3
+ ld b,3 ;bar width 3
+#else
+ ld hl,(58*scrwidth)+VIDEO_MEM+2
+ ld b,2 ;bar width 1.5
+#endif
+chargebarclr:
+ dec hl
+ ld (hl),0 ;clear (previous) bar
+ dnz chargebarclr
+
+ ld a,(weapincs) ;load bar size (0-80)
+ srl a ;half the size (0-40)
+ srl a ;again half that size (0-20 pixels)
+#ifdef TI83
+ srl a ;and again if 83 (smaller screen)
+#endif
+ ld c,a ;psh a
+ srl a ;/2
+ srl a ;/4
+ srl a ;/8: don't display last 3 bits of a (later)
+ jr z,nochargebar ;if a=0 then it would loop 256x so skip it
+ ld b,a ;loop b=a times
+chargebar: ;starting at ($39*16)+VIDEO_MEM
+ ld (hl),%11111111 ;draw a piece of the bar
+ inc hl ;next position
+ dnz chargebar ;loop it b times
+nochargebar:
+ ld a,c ;pop a
+ and %111 ;display last bits of chargebar
+ ret z ;if armor=0 then bit = %00000000 (don't disp)
+ ld b,a ;into B
+ xor a ;bit = %00000000
+chargebarbit:
+ scf ;set carry flag
+ rra ;rotates A right and sets bit 7 (c-flag)
+ dnz chargebarbit ;repeat B times (so if B=6 then a=%11111100)
+chargebarready: ; (an if B=3 then a=%11100000)
+ ld (hl),a ;draw this last byte
+ ret
+
+spr_bossA2: ;the following 51 bytes also function as the
+ .db 8,51 ; sprite for boss A2 (the fullscreen asteroid)
-;--------------------------- ground -------------------------------------------
+;--------------------------- ground ------------------------------------------
Handle_ground:
ld a,(timer)
and %111 ;once every 8 frames
jr nz,Display_ground ;otherwise skip the scroll
- ld bc,15 ;scroll all 16 bytes minus one (teh new byte)
+ ld bc,scrwidth-1 ;scroll all 16 bytes minus one (teh new byte)
ld hl,groundpos+1 ;from..
ld de,groundpos ;to (one byte to the left)
ldir ;LoaDIncreaseRepeat = scroll!
- ld a,(groundinfo) ;what kind of ground
- dec a ;type 1:
- jr z,ground_tunnel ;tunnel effect
- jr ground_boring
-
-ground_tunnel:
- ld a,(groundpos+14)
- ld (groundpos+15),a
+ ld a,(groundpos+14) ;last ground on right
+ ld d,a ;as default ground
ld hl,spacespace
-
- ld a,(RanPos)
+ ld bc,$500 ;range=0..4
+ cal Random ;a=0..4
+ dec a ;a=-1..3
+ dec a ;a=-2..2
ld b,a
- bit 1,a
- jr z,ground_previous
- bit 2,a
- jr z,gtunneldown
-gtunnelup:
- ld a,(hl)
- or a
- jr z,ground_previous ;a>=0 (a=0 actually)
- inc (hl)
- ld a,(groundpos+15)
- inc a
- jr newground
-gtunneldown:
- ld a,(groundpos+15)
- dec a
- jr z,ground_previous
- dec (hl)
- jr newground
-
-ground_previous:
- ld a,(groundpos+14) ;type 1
- jr newground
-ground_boring:
- ld a,(groundpos) ;type 0
+ add a,(hl) ;substract to spacesize
+ cp 128
+ jr c,newground ;if nothing left then don't change
+ ld c,a
+ ld a,d ;current grond height
+ add a,b ;add offset (2 higher/lower) => new position
+ or a ;=0?
+ jr z,newground ;may not be 0 (=256)
+ cp -10 ;>246?
+ jr nc,newground ;and not be <0
+ ld d,a
+ ld (hl),c
newground:
+ ld a,d
ld (groundpos+15),a ;save new byte on the right
- ld a,(hl)
- cp -25
- jr nc,Display_ground
- ld a,b
- and %1
- ld b,0
- jr nz,gtunnelup
Display_ground:
- ld b,16 ;screen width
+ ld b,scrwidth ;screen width
ld de,groundpos-1 ;height of current byte (previous actually)
psh de ;use later
- ld hl,GRAPH_MEM+(56*16)-1 ;screen position
+ ld hl,dispbuffer+(56*scrwidth)-1 ;screen position
psh hl
groundloopright:
ld a,(de) ;height of current byte
ld b,a ;save in b
- ld de,16 ;to substract to go one line up
+ ld de,-scrwidth ;to substract to go one line up
ld a,%11111111 ;bitmask black
- or a
groundloopup:
ld (hl),a ;display black byte
- sbc hl,de ;go up (sbc must be used for 16-bit sub)
- djnz groundloopup ;and loop >groundpos< times
+ add hl,de ;go up (sbc must be used for 16-bit sub)
+ dnz groundloopup ;and loop >groundpos< times
ld b,c ;pop b used by groundloopup
- djnz groundloopright ;loop right for entire screen (16x)
+ dnz groundloopright ;loop right for entire screen (16x)
pop hl \ pop hl ;restore stack
- ret
CheckGround: ;check for collision with the ground
ld a,(x)
neg
cp (hl)
ret nc
+ ld b,auch_ground
jp damage_you
-;--------------------------- ceiling ------------------------------------------
-
-Handle_ceiling:
- ld a,(timer)
- and %111 ;once every 8 frames
- jr nz,Display_ceiling ;otherwise skip the scroll
- ld bc,15 ;scroll all 15 bytes (16th is new position)
- ld hl,ceilingpos+1 ;from..
- ld de,ceilingpos ;to (one byte to the left)
- ld a,(de) ;load byte on left (will be lost after scroll)
- ldir ;LoaDIncreaseRepeat = scroll!
-
- ld a,(groundinfo) ;what kind of ceiling
- dec a ;type 1:
- jr z,ceiling_tunnel ;tunnel effect
- jr ceiling_boring
-
-ceiling_tunnel:
- ld a,(ceilingpos+14)
- ld (ceilingpos+15),a
- ld hl,spacespace
-
- ld a,(RanPos)
- ld b,a
- bit 4,a
- jr z,ceiling_previous
- bit 5,a
- jr z,ctunnelup
-ctunneldown:
- ld a,(hl)
- or a
- jr z,ceiling_previous
- inc (hl)
- ld a,(ceilingpos+15)
- inc a
- jr newceiling
-ctunnelup:
- ld a,(ceilingpos+15)
- dec a
- jr z,ceiling_previous
- dec (hl)
- jr newceiling
-
-ceiling_previous:
- ld a,(ceilingpos+14) ;type 1
- jr newceiling
-ceiling_boring:
- ld a,(ceilingpos) ;type 0
-newceiling:
- ld (ceilingpos+15),a ;save the new byte
- ld a,(hl)
- cp -25
- jr nc,Display_ceiling
- ld a,b
- and %1
- ld b,0
- jr nz,ctunneldown
-
-Display_ceiling:
- ld b,16 ;screen width
- ld de,ceilingpos-1 ;height of current byte
- psh de ;use later
- ld hl,GRAPH_MEM-17 ;screen position
- psh hl
-
-ceilingloopright:
- ld c,b ;push b for groundloopup
- pop hl \ inc hl ;get screen position and go one right
- pop de \ inc de ;get height info and set to the next byte
- psh de \ psh hl ;save these for the next time
- ld a,(de) ;height of current byte
- ld b,a ;save in b
-
- ld de,16 ;to substract to go one line up
- ld a,%11111111 ;bitmask black
- or a
-ceilingloopdown:
- ld (hl),a ;display black byte
- add hl,de ;go down
- djnz ceilingloopdown ;and loop >groundpos< times
-
- ld b,c ;pop b used by groundloopup
- djnz ceilingloopright ;loop right for entire screen (16x)
- pop hl \ pop hl ;restore stack
- ret
-
-CheckCeiling: ;check for collision with the ground
- ld a,(x) ;your x
- srl a ;x/2
- srl a ;x/4
- srl a ;x/8 (current ceiling-byte)
- inc a
- ld l,a ;hl = a
- ld h,0 ;"
- ld de,ceilingpos ;first ceiling-byte
- add hl,de ;current ceiling-byte
- ld a,(y) ;your y-pos
- inc a
- cp (hl) ;compare with ceiling
- ret nc ;carry if ceiling is above you
- jp damage_you ;otherwise you don't wanna be in that ship
-
-;--------------------------- move stars ---------------------------------------
+;--------------------------- move stars --------------------------------------
DisplayStars: ;inputs: hl=starx# a=stars# b=nrstars#
ld e,(hl)
ld d,(hl)
ld (de),a
inc hl
- djnz DisplayStars
+ dnz DisplayStars
ret ;let's comment this: returns
movestars2:
ld ix,starx2
ld a,(stars2)
- rlca
+ rlca ;move bits (star) left
ld (stars2),a
- ret nc
- ld b,nrstars2
+ ret nc ;if star didn't went from left to right bit
+ ld b,nrstars2 ;otherwise move all stars one byte left
jr movestars_loop
movestars1:
ld a,(timer)
rra
ld a,(stars1)
- ret c
+ ret c ;once every other turn...
rlca
ld (stars1),a
ret nc
movestars_loop:
ld h,(ix+1)
- ld l,(ix)
- dec hl
+ ld l,(ix) ;star (ix) pos in hl
+ dec hl ;one byte left (hl--)
- ld a,l
- and %00001111
- cp 9 ;(GRAPH_MEM&%00001111)-- = $C9FAand15-1 = $A-1
- jr nz,newstarok
- cal Random5016
+ ld a,dispbuffer/256-1 ;screen high byte minus one (it may be equal)
+ cp h ;compare w/ star high byte
+ jr c,newstarok ;screen<star: still on screen
+ cal RandomY ;otherwise create new position hl
newstarok:
- ld (ix),l
+ ld (ix),l ;save star's new position (ix)=hl
ld (ix+1),h
- inc ix \ inc ix
- djnz movestars_loop
- ret ;for stupid people, here's another comment...
+ inc ix \ inc ix ;next star (2 bytes/star)
+ dnz movestars_loop ;repeat for each star
+ ret ;...here's another comment... :P
-;--------------------------- pause --------------------------------------------
+;--------------------------- pause -------------------------------------------
Pause:
- ld hl,$0200 ;top left
+ ld hl,_txt_pause
+ ld (_penCol),hl
+ ld hl,txt_pause
+ rcl _vputs ;display small font
+ ld hl,_txt_pressenter ;top centered
ld (_curRow),hl
ld hl,txt_pressenter ;"Enter to continue"
- cal _puts ;display message
+ rcl _puts ;display message
pause:
- cal _getkey ;enter low-power mode and wait for key
- cp kEnter ;keypressed = enter?
- jr nz,pause ;no, wait some more
- ret ;continue
+ cal getsomekeys ;GET_KEY w/ halts and checks for enter
+ ret z ;enter/second pressed: continue game
+#ifdef invertable
+ cp K_F1 ;F1 pressed?
+ jr nz,notinvert
+ cal do_invert ;if so then change invert screen (AF saved)
+ cal mode_invert ;and screen mode (will be saved)
+notinvert:
+#endif
+ ld hl,CONTRAST ;contrast setting (0-31)
+ ld b,(hl) ;load contrast into b
+ cp K_UP ;+ key changes contrast up
+ jr nz,contr_not_up
+ inc b ;increase contrast
+ jr setcontrast ;set
+contr_not_up:
+ cp K_DOWN ;- key
+ jr nz,pause ;nope: loop
+ dec b ;decrease contrast
+setcontrast:
+ ld a,b
+ ld (hl),a
+ out (2),a ;and set it
+ cal releasekeys
+ jr pause ;and loop
-;--------------------------- teacher ------------------------------------------
+;--------------------------- teacher -----------------------------------------
+#ifdef teacherkey ;can be disabled to save space if not needed
Teacher:
ld (iy+12),5 ;enable flashing cursor
- cal _clrLCD
- ld hl,$0000 ;top left
- ld (_curRow),hl
+ rcl _clrWindow ;top left
ld hl,txt_teacher
- cal _puts ;display message
-
- ld hl,TEXT_MEM+15
- ld a,(hl)
- psh af
- ld a,(TEXT_MEM+42)
- psh af
- ld a,' '
- ld (hl),a
- ld (TEXT_MEM+42),a
+ rcl _puts ;display message
+ cal releasekeys
teacherloop:
- cal _getkey ;enter low-power mode and wait for key
+ rcl _getkey ;enter low-power mode and wait for key
cp kEnter ;enter pressed?
jr z,teacherans
cp kGrMenu ;keypressed = graph?
jr nz,teacherloop ;no, wait some more
ld (iy+12),0 ;disable cursor
- pop af
- ld (TEXT_MEM+42),a
- pop af
- ld (TEXT_MEM+15),a
- cal disp_icons
- ret ;continue
+ cal releasekeys
+ jp disp_icons ;+ret
-teacherans:
- ld a,' '
- cal _putc
+teacherans: ;enter displays the answer
+ ld a,' ' ;the cursor could still be displayed (█)
+ rcl _putc ;so remove it by displaying a ' ' over it
ld hl,$0701
- ld (_curRow),hl
- ld hl,txt_teacherans
- cal _puts
- jr teacherloop
-
+ ld (_curRow),hl ;below the equation, aligned right
+ ld hl,txt_teacherans ;the answer text
+ rcl _puts ;display
+ jr teacherloop ;and continue loop
+#endif
-;--------------------------- exit ---------------------------------------------
+;--------------------------- exit --------------------------------------------
quit:
- im 1
- ld a,(CONTRAST) ;load original contrast level
- out (2),a ;and set it back
- ld (iy+13),3 ;use textshadow (TEXT_MEM) and scrolling
-
- ld hl,GRAPH_MEM ;graph-screen location
- ld de,GRAPH_MEM+1
- ld (hl),0
+#ifdef fixkeys
+ im 1 ;release keyfix procedure
+#endif
+#ifdef TI86
+ xor a
+ ld (_asapvar+1),a ;next Asm( run will reload the program
+ res 5,(iy) ;don't display "Done" in TI-OS :P
+ set 2,(iy+13) ;set back screen scrolling again
+#endif
+#ifdef TI83
+ res 7,(iy+20) ;_vputs will now write directly to LCD again
+ set 6,(iy+9) ;finished with statmem
+#endif
+#ifdef clearbuffer ;should we clear the display buffer?
+ ld hl,dispbuffer ;graph-screen location
+ ld de,dispbuffer+1
+ ld (hl),a ;set to 0 (zero, nothing, nada, empty..)
ld bc,1024-1 ;do it 1024 times = entire screen
- ldir
+ ldir ;load that first 0 into the entire area
+#endif
+ jp _clrWindow ;as _clrLCD but also clears TEXT_MEM (like the
+ ;_clrScrn) AND also executes _homeup and ret
- cal _clrScrn ;as _clrLCD but also clears TEXT_MEM
- cal _homeup ;set cursor to top-left
- ret ;quit Nemesis :(
-
-;--------------------------- display ------------------------------------------
+;--------------------------- display -----------------------------------------
Display_Screen:
- ld hl,GRAPH_MEM ;from storage (top left)
- ld de,VIDEO_MEM ;to screen (top left)
+#ifdef TI83
+fastCopy:
+ jp ionFastCopy
+ ld a,$80 ; 7
+ out ($10),a ; 11
+ ld hl,dispbuffer+2-16-(-(16*64)+1) ; 10
+ ld a,$20 ; 7
+ ld c,a ; 4 ; 43
+fastCopyAgain:
+ ld b,64 ; 7
+ inc c ; 4
+ ld de,-(16*64)+1 ; 10
+ out ($10),a ; 11
+ add hl,de ; 11
+ ld de,15 ; 10
+fastCopyLoop:
+ add hl,de ; 11
+ inc hl ; 6
+ ret c ; 5
+ ld a,(hl) ; 7
+ out ($11),a ; 11
+ dnz fastCopyLoop ; 13/8 ; 3392
+ ld a,c ; 4
+ cp $2B+1 ; 7
+ jr nz,fastCopyAgain; 12/7
+ ret ; 11 ; 18
+
+#endif
+ ld hl,dispbuffer ;from buffer (top left)
+ ld de,VIDEO_MEM ;to real screen (top left)
ld c,56 ;display height = 64 bytes (minus 8 for bar)
displayloop:
ld b,16 ;display width = 16 bytes (16*8bits=256pixels)
displaytloop:
ld a,(hl) ;copy byte from (hl)
-_invert:
- xor $ff ; } ;invert byte (white<=>black) &&&&
+_invert: ;SMC: cpl <-> or a
+ cpl ;xor $ff: invert byte (white<=>black)
ld (de),a ;to (de)
inc hl \ inc de ;next byte
- djnz displaytloop ;16x hl >> de
+ dnz displaytloop ;16x hl >> de
dec c ;next line
- jr nz,displayloop ;loop 64x
+ jr nz,displayloop ;loop 56x
+
+ ld hl,time2invert
+ ld a,(hl)
+ or a ;(time2invert)=0:
+ jr z,noinvert ; do nothing
+ dec a ;otherwise decrease
+ cal z,do_invert ;if it became 0 then invert
+ ld (hl),a ;save new value
+noinvert:
ld hl,$396b ;Display Score
ld (_penCol),hl ;bottom right of screen
- ld hl,(score)
+ ld hl,(your_score)
_D_HL_DECI: ;------- display 5-digit value -------
ld de,savestr+4 ;savenr saves number string
ld b,5 ;five digits
-ldhld: cal UNPACK_HL ;one digit of hl
+ldhld: rcl UNPACK_HL ;one digit of hl
add a,'0' ;make number
ld (de),a ;save into savenr
dec de ;point to next digit
- djnz ldhld ;repeat for all digits
+ dnz ldhld ;repeat for all digits
ld hl,savestr ;we (the program) saved the value righthere
- cal _vputs ;the only thing left to do is to display it
- ret ;and we're done again
+ jp _vputs ;the only thing left to do is to display it
savestr: ;@here the score will be stored
.db "00000",0 ;don't worry, it's just temporary
-;------------------------- handle ship ----------------------------------------
+;------------------------- handle ship ---------------------------------------
Handle_Ship:
ld a,(your_occ) ;are
inc a ;no! next (explosion)frame
ld (your_occ),a ;save
- cp 34 ;last explosion frame?
+ cp 63+1 ;last explosion frame?
jp c,exploding_you ;not yet: display explosion
- cp 40 ;delay finished?
+ cp 64+16 ;delay finished?
+ ret nz ;no, don't display anything (&return)
+ pop hl ;restore stack (cuzzof call)
jp z,You_die ;yes = game over
- ret ;don't display anything
+;----move----
ok: ;we are
ld a,%01111110 ;get arrow keys
out (1),a ;it's cold outside
in a,(1) ;come back in
ld b,a ;psh a (keys)
- xor %11111111 ;inverted a = 0 if arrow-key has been pressed
- ld a,(your_multiples)
- jr z,no_adv ;if so, leave the multiples where they are
- or %100 ;set move bit
- jr adv_ok
-no_adv: and %11111011 ;reset move bit
-
+ xor -1 ;inverted a: 0 if arrow-key has been pressed
+ ld a,(your_multiples) ;(btw: CPL doesn't set any flags)
+ res 7,a ;reset move bit (no flags changed)
+ jr z,adv_ok ;if so, leave the multiples where they are
+ set 7,a ;set move bit
adv_ok: ld (your_multiples),a
- ld a,b ;pop a (keys)
+ ld a,(timer) ;framecounter
+ and %1 ;switches 0<>1 each frame
+ inc a ;a = 1 or 2 (1.5 avg)
+ ld c,a ;c = your_speed
+
+ ld a,b ;pop a (keys)
rra ;rotate right (put last bit in c)
ld b,a ;we need a later
jr c,no_down
ld a,(hl)
- cp 49 ;55-6 = bottom of screen
- jr z,no_down
- inc a
+ add a,c
+ cp 50 ;56-6 = bottom of screen
+ jr nc,no_down
ld (hl),a
no_down:
dec hl
rr b ;because we now use b, it's rr instead of rra
jr c,no_left
ld a,(hl)
- sub 1 ;<dec a> doesn't affect c-flag
+ sub c ;<dec a> doesn't affect c-flag
jr c,no_left ;-1 = left side
ld (hl),a
no_left:
rr b
jr c,no_right
ld a,(hl)
- cp 121 ;127-6 = right side
- jr z,no_right
- inc a
+ add a,c
+ cp 122 ;128-6 = right side
+ jr nc,no_right
ld (hl),a
no_right:
- ld d,(hl)
+ ld d,(hl) ;d=x
inc hl
rr b
jr c,no_up
ld a,(hl)
- sub 1 ;<dec a> doesn't affect carry-flag
+ sub c ;<dec a> doesn't affect carry-flag
jr c,no_up ;-1 = top of screen
ld (hl),a ;save new y
-no_up: ld e,(hl)
- ld ix,spr_ship01 ;ship sprite
- ld hl,your_inv ;invulnerable?
+no_up: ld e,(hl) ;e=y
+ ld ix,spr_ship01 ;normal ship sprite
+your_shipspr =$-2
+ ld hl,your_shield ;shielded?
ld a,(hl) ;load time in a
or a ;is it 0?
- jr z,handle_multiples ;yes so ship = normal (display \ continue)
+ jr z,disp_ship ;yes so ship = normal (display \ continue)
ld a,(timer) ;load frame nr.
and %00000111 ;a=0 once every four frames
dec (hl) ;decrease inv-time left
not_time:
and %00000100 ;a switches 0<->1 every 2 frames
- jr z,handle_multiples ;show normal ship
+ jr z,disp_ship ;show normal ship
inv_flicker:
- ld ix,spr_ship01i ;don't display ship
+ ld bc,spr_ship01i-spr_ship01
+ add ix,bc ;display invulnerable ship
+disp_ship:
+ cal safeputsprite ;display your ship; save de
-handle_multiples:
- cal putsprite ;display your ship
+;----multiples----
+handle_multiples:
ld a,(your_multiples) ;do you have multiples
ld b,a ;save a for 2nd check
- and %11 ;no? (last two bits = nr of multiples)
+ and %1111 ;no? (last four bits = nr of multiples)
ret z ;then don't handle them either
-
- ld hl,y
- ld a,b ;restore a (your_multiples)
- and %100 ;move the multiples???
- jr z,mult_adv ;nope, just let them (saves (y) in y, (x) in x)
-
- ld hl,your_locpos ;location to save this position
- ld a,(hl) ;load a
- inc a ;a=a+1
- and %00001111 ;if a>15 then a=a-16
- ld (hl),a ;save new a
- add a,a ;a=a*2
- ld c,a ;bc=2a
- ld b,0
-
- ld hl,your_prevpos ;previous positions
- add hl,bc ;16 turns ago
- ld d,(hl) ;old x-pos
- inc hl ;and
- ld e,(hl) ;old y-pos
- ld (mx),de ;save multiple position in (mx)
-
- ld a,(y) ;load new y-pos
- ld (hl),a ;save it for 16 turns in the future
- dec hl ;and
- ld a,(x) ;load new x-pos
- ld (hl),a ;save that too
+ bit 7,b ;move the multiples??? (=move bit set?)
+ jr z,mult_adv ;nope, just let them (saves (y)in y, (x)in x)
+
+ psh de ;current position = needed later
+ ld hl,mm*14+1+your_prevpos ;previous positions
+ ld de,mm*14+3+your_prevpos ;move all positions one back
+ ld bc,mm*14+2
+ lddr ;change 0-57 -> 2-59 (if mm=4 that is)
+ inc hl ;your_prevpos+0
+ pop de
+ ld (hl),d ;x-pos
+ inc hl ;=current position
+ ld (hl),e ;y-pos
mult_adv:
- ld de,(mx)
- ld ix,spr_multiple ;sprite of the multiple
- jp putsprite ;display it + <ret>
+ ld ix,spr_multiple ;normal sprite
+ ld hl,timer
+ bit 3,(hl) ;change sprites every 8 turns
+ jr z,disp_multiples
+ ld ix,spr_multiple2 ;second sprite
+disp_multiples:
+ ld hl,your_prevpos+16 ;first pos.
+dispmultiplesloop:
+ psh af
+ psh hl
+ ld d,(hl) ;load coords
+ inc hl
+ ld e,(hl)
+ psh ix
+ cal putsprite ;display
+ pop ix ;same sprite next time ;)
+ pop hl
+ ld de,14
+ add hl,de ;next multiple
+ pop af ;counter
+ dec a
+ ret z ;return if all done
+ jr dispmultiplesloop ;loop
+
+;----explode----
exploding_you:
srl a ;half the framerate
- dec a ;first frame is 1>inc>srl>dec = 0
+ srl a ;and half that framerate
ld hl,x-1
+ ld ix,spr_yexplosion ;base sprite
-explosion_stuff:
- rra
- add a,a
- add a,a
+explosion_stuff: ;in:a=frame*2+(0 to 1); (hl)=xpos-- ix=sprite
+ and %11111110
add a,a
+ add a,a ;frame*8
ld c,a
- ld b,0
- ld ix,spr_explosion
- add ix,bc
- inc hl
- ld d,(hl)
- inc hl
- ld e,(hl)
- jp putsprite
+ ld b,0 ;bc=a
+ add ix,bc ;go to correct sprite (each spr. is 8 bytes)
+ inc hl ;@x
+ ld d,(hl) ;load xpos
+ inc hl ;@y
+ ld e,(hl) ;and y
+ jp putsprite ;and display it too
-damage_you:
- ld a,(your_inv) ;invulnerability left?
+;----hit----
+
+damage_you: ;damages you B points
+ ld a,(your_occ) ;return if already dead (prevents exploding
+ or a ; twice, or stucking in exploding state)
+ ret nz ;0 = you're normal
+
+ ld a,(hardcore) ;hardcore mode?
or a
- ret nz ;return if inv>0
+ jr z,damageok ;0 = no = don't modify
+; sla b ;1 = yes = double tha damage (b shifted left)
+ .db $CB,$30 ;sll b ;damage=2b|1 (CB3r = unsupported SLL r)
+damageok:
+ ld a,(your_shield) ;shield left?
+ or a
+ jr z,dothadamage ;no shield
+ srl b ;shield: half the damage
+dothadamage:
+ ld hl,time2invert
+ xor a ;a=0
+ cp (hl) ;not already inverted?
+ cal z,do_invert ;then invert screen
+ ld (hl),2 ;change back 2 frames from now
+
ld hl,your_armor ;armor left
- ld a,(hl) ;check
- dec a ;is it 0?
- jp m,no_armor ;yes, 0hp left so explode
- ld (hl),a ;no, so save decreased hp
- cal disp_armor ;and display new value
-
- ld a,(your_pickup) ;how many pickups do you have?
- dec a ;is the armor-icon selected
- ret nz ;return if not
- psh hl
- ld hl,VIDEO_MEM+(16*56)
- ld (PutWhere),hl
- ld ix,spr_icon ;if so, highlight armorIcon again
- ld de,$1901 ;position
- cal putwidesprite ;display icon
- ld hl,GRAPH_MEM
- ld (PutWhere),hl
- pop hl
- ret ;and return
-no_armor:
+ ld a,(hl) ;load hp in A
+ sub b ;decrease hp by B
+ jr nc,newarmor ;>=0hp left so don't explode
ld a,%01 ;occ %xxxxxx01 = explode
- ld (your_occ),a ;set to explode
- ret
+ ld (your_occ),a ;too bad, you're dead meat
+newarmor:
+ ld (hl),a ;save decreased hp
+ jp disp_armor ;and display new value
-;------------------------- place multiples ------------------------------------
+;------------------------- place multiples -----------------------------------
Place_multiples:
- ld (mx),de ;set last multiple-position
ld hl,your_prevpos ;place all previous positions
- ld b,16 ;all 16 of them
+ ld b,mm*7+2 ;all saved positions of them (14 per multiple)
place_multiples:
- ld (hl),d ;set prev-x to d
+ ld (hl),e ;set prev-x to d
inc hl ;next
- ld (hl),e ;set prev-y to e
+ ld (hl),d ;set prev-y to e
inc hl ;next
- djnz place_multiples ;repeat
+ dnz place_multiples ;repeat
ret
-;------------------------- select upgrade -------------------------------------
+;------------------------- select upgrade ------------------------------------
+
+inc_armor:
+ ld a,(your_armor) ;load current armor
+ cp maxarmor-5 ;may not become >=maxarmor
+ jr c,doincarmor ;ok then just add 6
+ ld a,maxarmor-6 ;set to maximum (6 will be added below)
+doincarmor:
+ add a,6 ;add 6 to armor
+ ld (your_armor),a ;change armor
+ ret
select:
+ ld de,your_weapon ;current weapon, required for most selections
ld hl,your_pickup ;select pickups
ld a,(hl) ;load pickups taken so far
dec a ;is it 1?
- jr nz,select2 ;no, carry on
- ld (hl),a ;reset pickups (a=0)
- ld hl,your_armor ;change armor
- inc (hl) ;increase HPs by one
- jp disp_icons ;display and return
-select2:
+ ret m ;return if it's 0 (no pickups)
+
+ ld (hl),0 ;reset pickups
+ jr nz,selectlaser ;no, carry on again
+selectbeam:
+ ld a,(de) ;(your_weapon)
+ inc a ;next
+ cp maxweapon
+ jr c,selectedbeam ;weapon OK
+ jr z,disp_icons ;weapon maxed out
+ xor a ;laser was selected: set to first weapon
+selectedbeam:
+ ld (de),a ;set new weapon
+ cal loadweapon ;load it (damage and stuff)
+ jr disp_icons ;display n return
+selectlaser:
dec a ;is it 2?
- jr nz,select3 ;no, carry on
- ld (hl),a ;reset pickups
- inc a ;a=1
- ld (torp_occ),a ;ready torpedoes
- jp disp_icons ;display 'n return
-select3:
- dec a ;is it 3?
- jr nz,select4 ;no, carry on
- ld (hl),a ;reset pickups
- ld hl,your_weapon
- ld a,(hl)
- inc a
- cp 10
- jp nc,disp_icons ;>=10
+ jr nz,selectextra ;no, carry on
+ ld (your_extra),a ;no extra beams (tailbeam/up-double)
+ ld a,(de) ;(your_weapon)
+ cp maxweapon ;upgrade from bullet?
+ jr nc,upgradelaser ;nope, just upgrade
+ ld a,maxweapon-1 ;yes, set laser #1
+upgradelaser:
+ inc a ;next laser
+ cp maxlaser
+ jr nc,disp_icons ;laser maxed out
+ ld (de),a
+ cal loadweapon
+ jr disp_icons ;display + return
+selectextra:
+; ld a,(de) ;(your_weapon)
+; cp maxweapon+1 ;laser or beams?
+; jr c,selectXbeam ;if beamweap then no multiples but extra beam
+ ld hl,your_multiples
+ ld a,(hl) ;multiples you already got
+ and %1111 ;reset movebit so (your_multiples)=real value
+ inc a ;one more
+ cp mm+1
+ jr nc,enoughmultiples ;maxed out
ld (hl),a
-
- add a,a ;weap*2
- add a,a ; *4
- add a,a ; *8
- ld c,a
- ld b,0
- ld hl,weapons-7
- add hl,bc
- ld a,(hl)
- ld (ybuls),a
-
- jp disp_icons ;display n return
-select4:
- dec a ;is it 4?
- jr nz,select5 ;no, carry on again
- ld (hl),a ;reset pickups
- inc a ;a=1
- ld (your_weapon),a ;ready laser
- jp disp_icons ;display + return
-select5:
- dec a ;is it 5?
- jr nz,select6 ;no, carry on once more
- ld (hl),a ;reset pickups
- inc a
- ld (your_multiples),a
+enoughmultiples:
ld de,(x)
- cal Place_multiples
- jp disp_icons ;display, return
-select6:
- ld (hl),0 ;reset pickups
- jp disp_icons ;display/return
-
-;------------------------- fire bullet ----------------------------------------
+ dec a ;if this is your first multiple then...
+ cal z,Place_multiples ;reset multiples positions
+; jr disp_icons ;display, return
+;selectXbeam:
+; ld a,1 ;updouble
+; ld (your_extra),a ;ready extra beam
+; jr disp_icons ;display 'n return
+
+;--------------------------- show icon ---------------------------------------
+
+disp_icons: ;destroyes: abcdehlix
+#ifdef TI86 ;-------86
+
+ ld a,VIDEO_MEM/$400 ;directly on screen
+ ld (PutWhere),a ;place icons at normal screen
+ ld hl,VIDEO_MEM+(scrwidth*56);56 rows down = eight rows from bottom
+ ld b,scrwidth ;draw 16x (screen width)
+ ld a,%11111111 ;horizontal line mask
+ cal drawline ;draw divider-line
-Fire_bullet:
- ld hl,RanPos ;random
- inc (hl) ;update random counter
-
- ld hl,just_fired
- ld a,(hl) ;just_fired
- cp 5 ;already pressed?
- ret z ;return when already pressed (=5)
- inc (hl) ;otherwise increase counter (0 to 4 >> 1 to 5)
- ld a,(your_weapon) ;if you have bullets.....
- dec a ;(1=laser)
- jr z,fireOK
- ld (hl),5 ;.....then can't fire next turn (go to 5 imm.)
+ ld b,scrwidth*7 ;draw 16x (screen width) 7x (height)
+ xor a ;blank line mask
+ cal drawline ;clear scorebar
-fireOK:
- ld hl,(x) ;yes: first fire from ship position (x)
- ld (firex),hl ;set firepos
- ld a,(your_multiples) ;any multiples?
- and %11 ;nope?
- jr z,fireany ;then just fire somethin'
- cal fireany ;and blast
- ld hl,(my) ;then, fire from multiple position (mx)
- ld a,(mx) ;<ex h,l>
- ld h,a ; ^^^^^^
- ld (firex),hl ;set firepos
- ;blast again and <ret>
-fireany:
- cal fire_torp ;&&&
-
- ld a,(your_weapon) ;do you have laser?
- dec a ;1=yes
- jr z,fire_laser
-
- ld ix,weapons-6
- add a,a ;weap*2
- add a,a ; *4
- add a,a ; *8
- ld c,a
- ld b,0
- add ix,bc
+disp_lives:
+ ld de,$003C ;(0,4)
+ ld a,(your_lives) ;nr of lives
+ or a
+ jr z,displivesdone ;no lives
+ ld b,a
+displivesloop:
+ psh bc
+ ld ix,spr_lship
+ cal safeputsprite ;put li'l ship
+ ld a,lshipsize+1
+ add a,d
+ ld d,a ;x=x+5
+ pop bc
+ dnz displivesloop ;one ship per life
+displivesdone:
+ cal disp_armor ;display bar
- ld c,(ix)
- cal fire_ybullet
- inc ix
- inc ix
- ld c,(ix)
- xor a
- cp c
- cal nz,fire_ybullet
- inc ix
- inc ix
- ld c,(ix)
- xor a
- cp c
- jr nz,fire_ybullet
- ret
+ ld ix,spr_icon00 ;emptyIcon
+ ld a,(your_weapon) ;ur weapon
+ cp maxweapon ;bullets?
+ psh af ;a=(your_weapon); cf=bullets
+ jr nc,no_bullets ;=laser
+ ld hl,$3945 ;position to display bullet-type digit
+ inc a ;1 = weapon #1 (=0)
+ ld (_penCol),hl ;set location
+ add a,'0' ;make digit
+ rcl _vputmap ;display char
+ ld ix,spr_icon04 ;bulletIcon
+no_bullets:
+ ld de,$3939 ;icon #2
+ cal putwidesprite ;(beamweap)
-fire_torp:
- ld de,(firex)
- ld hl,torp_occ ;torpedo...
- ld a,(hl) ;load torpInfo
- dec a ;do you have (unused) torpedoes?
- ret nz ;nope (a must be 1)
- ld (hl),2 ;yes; use torpedo
- ld (torp_pos),de ;save torpedo position (in de)
- ret
+ ld ix,spr_icon00
+ pop af ;ld a,(your_weapon) \ cp maxweapon
+ jr c,no_laser ;popped carry
+ ld hl,$3955 ;position to display laser-type digit
+ ld (_penCol),hl ;set location
+ sub maxweapon-1 ;1 = laser #1 (=maxweapon)
+ add a,'0' ;make digit
+ rcl _vputmap ;display char
+ ld ix,spr_icon03 ;laserIcon
+no_laser:
+ ld de,$4939 ;icon #1
+ cal putwidesprite ;display icon (laser)
+ ld ix,spr_icon00 ;emptyIcon
+ ld a,(your_multiples) ;number of multiples
+ and %111 ;<8
+ jr z,no_multiples ;none (empty)
+ ld ix,spr_icon05 ;multiples-icon
+no_multiples: ;no multiples
+ ld de,$5939 ;icon #3
+ cal putwidesprite
-fire_laser: ;yes, fire that laser instead
- ld a,(firex) ;a = your x-pos
- ld d,a
+ ld ix,spr_dividerline
+ ld de,$6939
+ cal putwidesprite
- ld hl,GRAPH_MEM ;save-location
- ld a,(firey) ;y-coord
- add a,3 ;at middle of your ship (y+3)
- ld e,a ;save laser-y in e
- add a,a ;y*2
- add a,a ;y*4
- add a,a ;y*8
- rl b ;b (=0) =b*2+overflow (if y>32 then bc=bc+256)
- add a,a ;y*16 (width of screen)
- rl b ;b=b*2+overflow (if y>64 then bc=bc+512)
- inc a ;8 pixels to right (a=even so no overflow)
+ ld a,(your_pickup) ;pickups taken
+ add a,a ;picks*2 (sets z-flag)
+ jr z,iconsdone ;return if no pickups
+ add a,a ;picks*4
+ add a,a ;picks*8
+ add a,a ;picks*$10
+ add a,$29 ;add 29h
+ ld d,a ;y-pos = picks * $10 + $29 (3a,4a,5a)
+ ld e,$39 ;x-pos = bottom (3a39,4a39,5a39)
- srl d ;X/2
- srl d ;X/4
- srl d ;X/8
- add a,d ;a = (Y*16+X/8) mod 256 (c set on overflow)
- jr nc,_nolc ;jump if no carry = no overflow = a<=255
- inc b ;a>255 so increase bc by 256
-_nolc: ld c,a ;c = (Y*16+X/8) mod 256
- add hl,bc ;bc = Y*16+X/8
+ ld ix,spr_icon
+ cal putwidesprite
+iconsdone:
+ ld a,dispbuffer/$400 ;normal game-screen
+ ld (PutWhere),a ;set sprite-position to normal screen
+ jp disp_charge ;display weapon charge bar
- ld a,15 ;128/8=16=screen width ** minus one (inc a ^^)
- sub d ;minus x-start (d=X/8)
+#else ;-------------83
+
+ ld hl,VIDEO_MEM+(scrwidth*56);56 rows down = eight rows from bottom
+ ld b,scrwidth ;draw 12x (screen width)
+ ld a,%11111111 ;horizontal line mask
+ cal drawline ;draw divider-line
+
+ ld b,scrwidth*7 ;draw 12x (screen width) 7x (height)
+ xor a ;blank line mask
+ cal drawline ;clear scorebar
+
+disp_lives:
+ ld de,$003C ;(0,4)
+ ld a,(your_lives) ;nr of lives
+ or a
+ jr z,displivesdone ;no lives
ld b,a
-drawlaser:
- ld (hl),%11111111
- inc hl ;Go to next byte
- djnz drawlaser
+displivesloop:
+ psh bc
+ ld ix,spr_lship
+ cal safeputsprite ;put li'l ship
+ ld a,lshipsize+1
+ add a,d
+ ld d,a ;x=x+5
+ pop bc
+ dnz displivesloop ;one ship per life
+displivesdone:
+ cal disp_armor ;display bar
- ld a,(just_fired) ;fired for how long
- cp 4 ;if 4th turn
- ret nz ;then do damage, otherwise quit
+ ld ix,spr_icon00 ;emptyIcon
+ ld a,(your_weapon) ;ur weapon
+ cp maxweapon ;bullets?
+ psh af ;a=(your_weapon); cf=bullets
+ jr nc,no_bullets ;=laser
+ ld hl,$3935 ;position to display bullet-type digit
+ inc a ;1 = weapon #1 (=0)
+ ld (_penCol),hl ;set location
+ add a,'0' ;make digit
+ rcl _vputmap ;display char
+ ld ix,spr_icon04 ;bulletIcon
+no_bullets:
+ ld de,$2F39 ;icon #2
+ cal putwidesprite ;(beamweap)
-handle_laser:
- ld a,(firex)
- ld d,a ;d was divided, so reload the laser-x
+ ld ix,spr_icon00
+ pop af ;ld a,(your_weapon) \ cp maxweapon
+ jr c,no_laser ;popped carry
+ ld hl,$393F ;position to display laser-type digit
+ ld (_penCol),hl ;set location
+ sub maxweapon-1 ;1 = laser #1 (=maxweapon)
+ add a,'0' ;make digit
+ rcl _vputmap ;display char
+ ld ix,spr_icon03 ;laserIcon
+no_laser:
+ ld de,$3939 ;icon #1
+ cal putwidesprite ;display icon (laser)
-check_laserhits: ;de = (x,y)
- ld b,nrenemies
- ld hl,enemies
+ ld ix,spr_icon00 ;emptyIcon
+ ld a,(your_multiples) ;number of multiples
+ and %111 ;<8
+ jr z,no_multiples ;none (empty)
+ ld ix,spr_icon05 ;multiples-icon
+no_multiples: ;no multiples
+ ld de,$4339 ;icon #3
+ cal putwidesprite
-laserhits: ;Hits with normal enemies
- psh hl
+ ld ix,spr_dividerline
+ ld de,$4D39
+ cal putwidesprite
- ld a,(hl)
- and %00000010
- jr z,nolashit ;no hit when enemy_occ <> 2/3
+ ld a,(your_pickup) ;pickups taken
+ add a,a ;picks*2 (sets z-flag)
+ ld e,a ;save 2*picks
+ jr z,iconsdone ;return if no pickups
+ add a,a ;picks*4
+ add a,a ;picks*8
+ add a,e ;picks*10 (8+2=10)
+ add a,$26 ;add 26h
+ ld d,a ;y-pos = picks * 10 + $29 (3a,45,4e)
+ ld e,$39 ;x-pos = bottom (3a39,4539,4e39)
- inc hl ;enemy type
- ld a,(hl)
- or a ;enemy #0 = pickup
- jr z,nolashit ;yes: don't destroy
+ ld ix,spr_icon
+ cal putwidesprite
+iconsdone:
+ jp disp_charge ;display weapon charge bar
- inc hl
- ld a,(hl) ;check x
- sub d
- jp m,nolashit ;no hit when enemy is left of you
+#endif ;------------^^
- inc hl
- ld a,(hl) ;check y
- sub e
- jr z,enemy_lashit ;a-e=0 = laser on top line of enemy = hit
- jr nc,nolashit ;a-e>0 = enemy above laser = no hit
- add a,5 ;add enemy height
- jp p,enemy_lashit ;a-e>0 = hit
+drawline:
+ ld (hl),a ;draw one piece of the divider-line
+ inc hl ;move right (8 pixels = 1 byte)
+ dnz drawline ;repeat (16bytes * 8pixels =128= screen width)
+ ret
-nolashit:
- pop hl
- inc hl ;go to next enemy
- inc hl
- inc hl
- inc hl
- djnz laserhits ;check all enemies
+
+disp_armor:
+ ld de,scrwidth ;line size
+#ifdef TI86
+ ld hl,VIDEO_MEM+(58*scrwidth)+6
+#else
+ ld hl,VIDEO_MEM+(58*scrwidth)+5
+#endif
+ ld a,(your_armor) ;load your armor (<maxarmor)
+ srl a ;divide by 2 (barsize halved)
+ psh af
+ and %111 ;display last bits of armor
+ jr z,armorbarbitok ;if b=0 then prevent looping 256x
+ ld b,a ;into B
+ xor a ;bit = %00000000
+armorbarbit:
+ scf ;set carry flag
+ rla ;rotates A left and sets bit 0 (c-flag)
+ dnz armorbarbit ;repeat B times (so if B=6 then a=%00111111)
+armorbarbitok: ; (an if B=3 then a=%00000111)
+ ld c,a ;save last bit in c
+ pop af ;now we'll make the byte
+ and %11111000 ;clear last three bits
+ rra ;so we can use rotate instead of shift right
+ rra ;which saves 3(-2) bytes and speed
+ rra ;/8: don't display last 3 bits of a (later)
+
+ ld b,5 ;bar height
+armorbarloop1:
+ psh bc ;yloop counter
+ psh hl ;begin x-position
+ ld b,a ;loop b=a times per line
+ or a ;<1 bytes
+ jr z,lastarmorbit ;then don't display bytes (would be 256x)
+armorbarbyte:
+ ld (hl),%11111111 ;draw a piece of the bar
+ dec hl ;next position
+ dnz armorbarbyte ;loop it b times
+lastarmorbit:
+ ld (hl),c ;draw the last byte
+ dec hl
+ ld (hl),0 ;empty byte before to remove any remainders
+ pop hl ;recall first byte
+ add hl,de ;one down
+ pop bc ;recall yloop-counter
+ dnz armorbarloop1 ;display again
+
+#ifdef TI86
+ ld hl,(56*scrwidth)+VIDEO_MEM+7
+#else
+ ld hl,(56*scrwidth)+VIDEO_MEM+6
+#endif
+ ld a,%01010101
+armorbarY:
+ cal drawbarrow ;display "grey" mask
+ cal drawbarrow ;display "grey" mask
+ add hl,de
+ add hl,de
+ add hl,de
+ cal drawbarrow
+drawbarrow: ;ORs an entire row with A
+ add hl,de ;one down
+ ld b,4 ;four bytes right
+ psh hl
+armorbarX:
+ dec hl ;next byte
+ psh af
+ or (hl)
+ ld (hl),a ;clear
+ pop af
+ dnz armorbarX ;4x
+ pop hl ;old position
ret
-enemy_lashit:
- cal enemy_hit
- jr nolashit
+;------------------------- fire bullet ---------------------------------------
-fire_ybullet:
- ld hl,ybullets
- ld de,3
- ld a,(ybuls)
- ld b,a
+fire_multiple:
+ psh af
+ psh ix ;save ix for next fire
+ cal fireany ;fire from multiple position
+ pop ix ;saving ix is much faster than recalculating
+ pop af ;number of multiples
+ dec a ;one just displayed
+ pop hl ;ret
+ ret z ;ret2 if none left
+ jp (hl) ;real ret
+
+fire_multiples:
+ ld hl,(your_prevpos+16);then, fire from multiple position
+ cal fire_multiple
+ ld hl,(your_prevpos+30)
+ cal fire_multiple
+ ld hl,(your_prevpos+44)
+ cal fire_multiple
+ ld hl,(your_prevpos+58)
+ cal fire_multiple ;no JP: that messes up the stack
+ ret
+
+Fire_bullet:
+ ld hl,just_fired ;=for how long you may hold fire (2nd)
+ ld a,(hl) ;a = time left
+ dec a ;decrease timer
+ ret z ;may not fire when (just_fired) became 0
+ ld (hl),a ;save new decreased value
+
+ ld a,(your_weapon) ;if you have bullets.....
+ cp maxweapon
+ jr nc,fireOK ;>weapons = laser
+ ld (hl),1 ;bullet may last one turn (just fire 1 bullet)
+fireOK:
+ ld a,(your_weapon) ;weapon nr.
+ ld ix,weapondata+2
+ add a,a ;weap*2
+ add a,a ; *4
+ add a,a ; *8
+ ld c,a
+ ld b,0 ;go to current weapon (bc=a)
+ add ix,bc ;ix=weapon ptr
+
+ ld a,(your_multiples) ;any multiples?
+ and %1111 ;nr. of multiples
+ cal nz,fire_multiples ;if >0 then fire them too
+ ld hl,(x) ;fire from ship position (x)
+fireany: ;HL=(x,y)
+ ld (firex),hl ;set position to fire from
+ ld b,3 ;or use the proc at fireOK with ld ix,weapondata+2-(256*3)
+fire_weapon:
+ psh bc ;save counter
+ ld a,(ix) ;load this weapon
+ ld c,a ;save bulletType in c
+ and %11100000 ;%111?????=laser
+ cp %11100000 ;is it?
+ cal z,fire_laser ;fire laser (will set c=0 when done)
+ xor a ;<>0=bullet
+ cp c ;c<>0?
+ cal nz,fire_ybullet ;then fire bullet
+ inc ix ;otherwise fire next weapon
+ inc ix
+ pop bc ;weapon counter (do 3 weapons)
+ dnz fire_weapon
+
+fire_tail:
+ ld ix,extrabulletpos-1 ;extra bullet's position
+ ld hl,your_extra ;data
+ ld a,(hl)
+ or a
+ ret z
+; ld c,tailbeam ;tailbeam weapon data
+; dec a ;(your_extra)=1
+; jr z,fire_ybullet ;=tail
+ ld c,doublebeam ;up double data
+ ;(your_extra)=2 =double
+;-----fire BULLETs-----
+
+fire_ybullet: ;fire bullet type=C dam=(curweapdamage) at (firex/y)
+ ld hl,ybullets ;check for unused bullet
+ ld de,4
+ ld b,nrybuls
find_ybullet:
ld a,(hl)
or a
jr z,found_ybullet ;0 = no bullet here
add hl,de
- djnz find_ybullet ;look next bullet
- ret
+ dnz find_ybullet ;look next bullet
+ ret ;none found, return don't fire
found_ybullet:
ld (hl),c ;use the bullet and set correct bullet-type
+ inc hl ;@damage
+ ld (hl),1 ;set bullet damage
+curweapdamage =$-1
ld a,(firex) ;your x-pos
add a,5 ;place bullet in front of you
inc hl ;go to bullet-x
add a,(ix+1) ;place bullet at the middle of your ship
inc hl ;go to bullet-y
ld (hl),a ;set y
+
+ xor a
+ ld (weapincs),a ;reset damage
ret
-;------------------------ handle bullets --------------------------------------
+;-----fire LASER-----
-bullet_left:
- ld a,125
- sub b
+fire_laser:
+ ld b,0 ;overflow counter
+ ld hl,firex
+ ld d,(hl) ;d = your x-pos
+ inc hl
+
+ ld a,(hl) ;base y-coord (firey)
+ add a,(ix+1) ;at specified offset (most likely the middle)
+ ld e,a ;save laser-y in e
+ psh de ;save unmodified (x,y)
+ add a,a ;y*2
+#ifdef TI86
+ add a,a ;y*4 (86)
+#else
+ add a,e ;y*3 (83)
+#endif
+ add a,a ;y*8 (86) | y*6 (83)
+ rl b ;b (=0) =b*2+overflow (if y>32 then bc=bc+256)
+ add a,a ;width of screen (y*16 (86) | y*12 (83))
+ rl b ;b=b*2+overflow (if y>64 then bc=bc+512)
+ inc a ;8 pixels to right (a=even so no overflow)
+
+ srl d ;X/2
+ srl d ;X/4
+ srl d ;X/8
+ add a,d ;a = (Y*16+X/8) mod 256 (c set on overflow)
+
+ jr nc,_nolc ;jump if no carry = no overflow = a<=255
+ inc b ;a>255 so increase bc by 256
+_nolc: ld c,a ;c = (Y*16+X/8) mod 256
+ ld hl,dispbuffer ;save-location
+ add hl,bc ;bc = Y*16+X/8: hl=screen address
+ ld a,scrwidth-1 ;128/8=16=screen width ** minus one (inc a ^^)
+ sub d ;minus x-start (d=X/8)
+ jr z,handle_laser ;if size=0=256x (right edge) then skip display
+ ld b,a
+drawlaser:
+ ld (hl),%11111111
+ inc hl ;Go to next byte
+ dnz drawlaser
+handle_laser:
+ pop de ;de=(firex): x-pos unmodified
+
+check_laserhits: ;de = (x,y)
+ psh ix
+ ld b,nrenemies ;check all enemies
+ ld hl,enemies+1 ;enemy#1+occ/hp00
+laserhits: ;hits with normal enemies
+ psh hl
+ ld a,(hl) ;occ+hp00
+ and %11 ;normal enemy occ = %11
+ cp %11
+ jr nz,nolashit ;no hit when enemy_occ <> 11
+
+ inc hl ;@type
+ cal find_sprite ;ix=sprite to enemy (hl)
+ inc hl ;@x
+ ld a,(hl) ;check x
+ sub d
+ jr c,nolashit ;no hit when enemy is left of you
+ inc hl ;@y
+ ld a,(hl) ;check y
+ sub e
+ jr z,enemy_lashit ;a-e=0 = laser on top line of enemy = hit
+ jr nc,nolashit ;a-e>0 = enemy above laser = no hit
+ dec a ;minus one
+ add a,(ix+1) ;add enemy height (according to sprite @ix)
+ jp m,nolashit ;a-e>0 = hit
+enemy_lashit:
+ psh hl ;pointer to enemy destroyed by putsprite
+ psh bc ;safe enemy counter
+ psh de ; and Ur position (used for further compares)
+ dec e ;adjust y-position
+ dec e
+ dec e ;hit sprite centered at e (height=6)
+ dec hl ;@x
+ ld d,(hl) ;x-position of hit (enemy's x-pos)
+ ld ix,spr_lashit ;laserHit sprite
+ cal putsprite ;display this frame only unlike bullethit ani
+ pop de ;restore regs
+ pop bc
+ pop hl
+ ld a,(curweapdamage) ;damage
+ cal enemy_hit ;inflict (hl=enemy+y)
+nolashit:
+ pop hl ;enemy+1
+ ld a,b ;psh bc
+ ld bc,enemysize
+ add hl,bc ;go to next enemy
+ ld b,a ;pop bc
+ dnz laserhits ;check all enemies
+ xor a
+ ld (weapincs),a ;reset damage
+ pop ix
+ ld c,a ;c=0
+ ret
+
+;------------------------ handle bullets -------------------------------------
+
+Handle_bullets:
+ ld hl,ybullets
+ ld b,nrybuls
+scan_bullets:
+ ld a,(hl) ;@bulletType
+ or a ;bulletType=0 >> no bullet
+ jp z,next_ybullet+2 ;skip pops (+2); jP for speed
+
+ psh bc ;bullet counter
+ psh hl ;save enemy+type
+ ld (temp1),hl ;needed for check_bullethits
+ inc hl ;@damage
+ ld c,(hl) ;damage
+ dec c ;c=damage-1
+ jp m,bullethitbullet ;damage<=0 (=no bullet)
+ inc hl ;@x
- cp (hl) ;off screen? (x>128-5)
- jr c,remove_bullet
- ld a,(hl) ;a = X
- add a,b ;move 2 2 the right
+;move_bullet
+ ld c,a ;c=type
+ and %11111 ;pixels to move
+ add a,(hl) ;a = X + (hl) to the right
+ sub 16 ;and 16 to the left (so -16..+15)
+ jr c,remove_bullet ;remove if x<0
+ cp 8*scrwidth
+ jr nc,remove_bullet ;or x>=128
ld (hl),a ;save new pos.
ld d,a ;d = X
- inc hl ;to y-pos
+ inc hl ;@y-pos
ld a,c
- cal _shracc
+#ifdef TI86
+ rcl _shracc ;%11100000->1110
+;Note: a _shracc procedure inside Nemesis itself would be 27 cycles faster
+#else
+ srl a \ srl a \ srl a \ srl a ;83 doesn't have a shracc call
+#endif
+ srl a ;%1110->111
dec a
- jr z,bullet_noymove
+ jr z,bullet_noymove ;1=straight forward
dec a
- jr z,bullet_up
+ jr z,bullet_up ;2=up
dec a
- jr z,bullet_halfup
+ jr z,bullet_halfup ;3=1/2up
dec a
- jr z,bullet_down
-
-bullet_halfdown:
+ jr z,bullet_down ;4=down
+bullet_halfdown: ;5=1/2down
ld a,(timer)
- and 1
- jr z,bullet_noymove
+ rra ;carry once every other turn
+ jr c,bullet_noymove
bullet_down:
ld a,(hl)
inc a
ld (hl),a
bullet_halfup:
ld a,(timer)
- and 1
- jr z,bullet_noymove
+ rra ;CF every other turn
+ jr c,bullet_noymove
bullet_up:
ld a,(hl)
dec a
ld (hl),a
bullet_noymove:
ld e,(hl) ;e = Y
- ret
-
-remove_bullet:
- dec hl
- ld (hl),0 ;dump this bullet!
- pop hl ;&&&
- jr next_ybullet
-
-Handle_bullets: ;&&&>>
- ld hl,ybullets
- ld a,(ybuls)
- ld b,a
-scan_bullets:
- psh bc
- psh hl
- ld (temp1),hl ;needed for check_bullethits
- ld a,(hl)
- inc hl
- or a
- jp z,next_ybullet ;bulletType=0 >> no bullet
+display_bullet:
+ dec hl ;@x
+ dec hl ;@damage
+ ld a,(hl) ;bullet damage=size
+ ld hl,bullettable ;pointer to first bullet
+ srl a
+ srl a ;per 4
+ ld b,0
+ ld c,a ;->16bit (de=a)
+ add hl,bc ;point to correct bullet offset
+ ld a,(hl) ;load bullet offset
+ ld c,a ;convert to 16bit (d=0)
+ ld ix,spr_bullet01 ;first sprite
+ add ix,bc ;add offset (go to correct sprite)
- ld c,a
- and %1111
- ld b,a
- cal bullet_left ;move bullet left
+ ld a,(ix) ;bullet x-size
+ ld (bulletxsize),a ;used at check_bullethits
+ ld a,(ix+1) ;bullet y-size...
+ ld (bulletysize),a ;...too
-display_bullet:
- ld ix,spr_bullet01
- psh de
- cal putsprite ;display bullet
- pop de
+ cal safeputsprite ;display bullet; DE used for check_bullethits
cal check_bullethits
next_ybullet:
- pop hl
- pop bc
- inc hl
- inc hl
- inc hl
- djnz scan_bullets ;next bullet (loop)
+ pop hl ;restore enemy+type
+ pop bc ;b=counter
+ ld de,4
+ add hl,de
+ dnz scan_bullets ;next bullet (loop)
ret
+remove_bullet:
+ pop hl ;enemy+type
+ ld (hl),0 ;dump this bullet!
+ jr next_ybullet+1 ;+1:skip pop hl at next_ybullet
+
+bullethitbullet: ;"bullet" just displaying a bullet hit
+ inc c ;restore damage (to -5..0)
+ jp z,remove_bullet ;if it's 0 remove it
+ inc c ;increase to next frame
+ ld (hl),c ;save new
+ ld a,c
+ neg ;make positive value (frame nr. 0..4)
+ add a,a ;*2
+ ld e,a
+ add a,a ;*4
+ add a,e ;*6
+ ld e,a
+ ld d,0 ;de=a
+ ld ix,spr_hit ;first hit sprite
+ add ix,de ;add frame nr*8 (goto correct sprite)
+ inc hl ;@x
+ ld d,(hl)
+ inc hl ;@y
+ ld e,(hl) ;load position into de
+ cal putsprite ;display hit-sprite
+ jr next_ybullet ;handle the other bullets
+
;--------------------------- check bullethits --------------------------------
check_bullethits: ;INPUT: de=X,Y; (temp1)=bullet
ld b,nrenemies
- ld hl,enemies
+ ld hl,enemies+1
hit_enemies: ;Hits with normal enemies
+ psh bc ;enemy counter
psh hl
ld a,(hl)
- and %00000010
- jr z,nohit ;no hit when enemy_occ <> 2/3
+ and %11
+ cp %11
+ jr nz,nohit ;no hit when enemy_occ <> %11
inc hl ;enemy type
- ld a,(hl)
- or a ;enemy #0 = pickup
- jr z,nohit ;yes: don't destroy
-
- psh de
- cal find_sprite
- pop de
+ cal find_sprite ;set ix to the sprite of this enemy
- inc hl
+ inc hl ;@x
ld a,(hl) ;check x
- sub d
- sub 5
- jp p,nohit
- add a,5
- add a,(ix)
- jp m,nohit
+ sub d ;minus bullet x-position
+ ld b,a ;psh a
+ sub 5 ;minus bullet x-size
+bulletxsize =$-1
+ jp p,nohit ;miss
+ ld a,b ;pop a
+ add a,(ix) ;add enemy width
+ jp m,nohit ;miss
- inc hl
+ inc hl ;@y
ld a,(hl) ;check y
- sub e
- sub 3
- jp p,nohit
- add a,3
- add a,(ix+1)
- jp m,nohit
-
+ sub e ;minus bullet y-position
+ ld b,a ;psh a
+ sub 3 ;substract bullet height
+bulletysize =$-1
+ jp p,nohit ;nope, missed it
+ ld a,b ;pop a
+ add a,(ix+1) ;add enemy height
+ dec a ;minus one
+ jp m,nohit ;missed after all
+
+ ;---bullet hits enemy (auch-time!)---
psh hl
- ld hl,(temp1)
- ld (hl),$00 ;remove bullet
- pop hl
-
+ ld hl,0 ;@bulletType
+temp1 =$-2
+ inc hl ;@damage
+ ld a,(hl) ;damage to inflict on enemy
+ ld (hl),-(hitsprites+1);make this bullet exploding (damage = -5)
+ pop hl ;enemy+y
cal enemy_hit
-
nohit:
pop hl
- inc hl
- inc hl
- inc hl
- inc hl
- djnz hit_enemies ;check next enemy
+ ld bc,enemysize
+ add hl,bc
+ pop bc
+ dnz hit_enemies ;check next enemy
ret
-enemy_hit:
- dec hl
- dec hl
- dec hl
- ld a,(hl) ;occ
- ld c,a ;psh occ
- and %11111100 ;occ/4 = HP left ;<srl a\srl a
- jr nz,hpleft ;not zero -> jump
+enemy_hit: ;*in:a=damage;hl=enemy+y
+ add a,a ;a=damage to inflict
+ add a,a ;first 2 bits used for occ.
+ ld b,a
+
+ dec hl ;@x
+ dec hl ;@sprite+1
+ dec hl ;@sprite
+ dec hl ;@hp00 (occ)
+ ld a,(hl) ;load hp00
+ sub b ;decrease HP (if <0xx then c is set)
+ ld (hl),a ;save (no flag-changes)
+ dec hl ;@hp64; no change in c
+ ld a,(hl) ;load; no c-change
+ sbc a,0 ;if cf then decrease a
+ ld (hl),a ;save back the new value
+ ret nc ;if a>=0 then return, otherwise explode
+
+ inc hl ;goto occ again
ld (hl),%01 ;set to explode
ld a,(pickuptimer) ;counts enemies destroyed
dec a ;enough destroyed for a pickup?
+ psh af ;save flags and a=0
jr nz,pickupdone ;otherwise just explode
- ld (hl),%00000110 ;change it into a pickup (with 2 HP)
- ld a,18 ;reset enemies counter (18 hits = next)
+ ld a,pickupfreq ;reset enemies counter
pickupdone:
ld (pickuptimer),a ;save new enemiescounter value
- inc hl
- ld (hl),$00 ;explosionFrame 0
+ inc hl ;@sprite (=explosionFrame)
+ ld (hl),0 ;explosionFrame 0 or enemy #0=pickup
+ pop af
+ cal z,place_enemy ;place pickup (enemy#=0=a cuz ZF)
ld hl,1 ;increase score by one
- cal scoreInc
- ret
-
-hpleft:
- ld a,c ;pop occ
- sub %00000100 ;decrease HP by one
- ld (hl),a ;save
- ret
-
-;--------------------------- handle torpedo ----------------------------------
+ jp scoreInc ;+ret
-Handle_torp:
- ld a,(torp_occ)
- sub 2
- ret m ;return if occ=0/1
-
- ld hl,torp_pos ;x-position
- ld a,(hl) ;load in a
- inc a ;move right
- cp 125 ;right edge reached
- jr nc,remove_torp ;remove if x>125
- ld (hl),a ;save new x
- ld d,a
-
- inc hl ;y-position
- ld a,(hl)
- inc a ;move down
- cp 56 ;bottom reached
- jr nc,remove_torp ;remove if y>40
- ld (hl),a ;save new y
- ld e,a
-
- ld ix,spr_bullett1
- psh de
- cal putsprite ;display torpedo
- pop de
- jp check_bullethits ;check for hits with enemies
-
-remove_torp:
- ld a,1
- ld (torp_occ),a
- ret
-
-;--------------------------- level events -------------------------------------
+;--------------------------- level events ------------------------------------
Level_event:
- ld hl,nextevent ;time to next event <ld a,(nextevent)
- dec (hl) ;decrease counter <dec a
- ld a,(hl) ;look at counter <ld (nextevent),a
- or a ;has it reached zero?
- ret nz ;nope: get outta here!
-
- ld a,(eventtime) ;enemy frequency (lvl)
+ ld a,0 ;time to next event
+nextevent =$-1
+ dec a ;decrease counter
+ ld (nextevent),a ;store new value
+ ret nz ;hasn't reached zero yet: get outta here!
+
+ ld bc,0 ;enemy frequency (lvl)
+eventtime =$-2
+ cal Random
ld (nextevent),a ;set time to next event
ld hl,eventleft
dec (hl) ;update enemy-counter
dec a ;has it reached 2?
jr z,place_boss ;yep: place the BigBossTM!
dec a ;has it reached 3?
- jr nz,do_event ;nope: >3 = place an enemy
+ jr nz,place_ranenemy ;nope: >3 = place an enemy
inc hl ;nextevent located behind eventleft
- ld (hl),123 ;set delay
+ ld (hl),193 ;3: set delay for next boss to appear
ret ;don't place any more enemies
-place_boss: ;&&&
- ld hl,(levelp)
- dec hl
- ld a,(hl)
- ld (level_enemy),a ;set new enemy (boss)
- dec hl
- ld a,(hl)
- ld (level_move),a ;set boss movement (very slow)
- dec hl
- ld a,(hl)
- ld (level_fire),a ;set rapid fire
- cal do_event
- ret
-
standby_event:
ld b,nrenemies
- ld de,enemies-4
+ ld hl,enemies+1-enemysize
+ ld de,enemysize
+ xor a
chk_enemyleft:
- inc de
- inc de
- inc de
- inc de
- ld a,(de)
- or a ;0 = no enemy present
- jr nz,enemyleft
- djnz chk_enemyleft
- ret
+ add hl,de ;go to next enemy
+ cp (hl) ;0 = no enemy present
+ jr nz,enemyleft ;if enemy present (<>0) then quit checking
+ dnz chk_enemyleft ;loop for all enemies
+ ld hl,nextevent ;time 'til next event
+ ld (hl),157 ;next time to check is in 157 turns/frames
+ ld a,(your_weapon)
+ cp maxweapon ;you have bullets?
+ jr nc,placebigupgrade ;if not just place the big upgrade
+ ld a,(level)
+ rra ;if level&1=0 (even levels)
+ ret nc ;then dont place a pickup (=50%)
+placebigupgrade
+ ld a,1 ;no enemies left: place upgrade pickup
+ jr place_enemy ;place enemy #1(=a) = big pickup
enemyleft:
+ ld hl,eventleft
inc (hl)
ret
-do_event:
- ld de,enemies-4
-chk_noenemy:
- inc de
- inc de
- inc de
- inc de
- ld a,(de)
- or a ;0 = no enemy present
- jr nz,chk_noenemy
-
-place_enemy:
- ld a,(level_enemy) ;enemy type to place (lvl)
- ld hl,enemy00 ;enemy 1 specs
- add a,a ;a=type*2
- add a,a ;a=type*4
- ld c,a ;c=type
- ld b,0 ;bc = enemy nr.
- add hl,bc ;hl = enemy specs
- ld a,(hl) ;load hitpoints+occ of this enemy class
- ld (de),a ;occ
-
- inc hl ;next enemyInfo byte
- inc de ;next byte of current enemy
- ld a,(hl) ;load enemy class (nr)
- ld (de),a ;enemy type
-
- inc de ;set x-pos
- psh de
- cal find_sprite
- pop de
- ld a,128 ;appear at right edge of screen
- sub (ix) ;minus the width of this enemy (not offscreen)
- ld (de),a ;= x-position
+place_ranenemy:
+ ld hl,1 ;increase score by 1
+ cal scoreInc
+ ld bc,0 ;0..nrlvlenemies
+nrlvlenemies =$-1 ;=nr of enemies minus 1
+ cal Random ;random enemy b..b+c = 0..nrenemies-1
+ ld b,0
+ ld c,a ;bc=a
+ ld hl,lvlenemies
+ add hl,bc ;go to a random enemy
+ ld a,(hl) ;load enemy nr of this mysterious random enemy
+ jr place_enemy
+
+place_boss:
+ ld hl,(levelp) ;the leveldata (including the boss)
+ dec hl ;points to leveldata\boss\enemynr
+ ld a,(hl) ;load enemy# of boss
+
+place_enemy: ;places enemy #=a (out:achl=?;b=0;de=@enemy+11)
+ psh af
+ ld hl,enemies+1-enemysize
+ ld bc,enemysize
+ xor a ;a=0
+chk_noenemy: ;find an unused (no) enemy
+ add hl,bc ;check next enemy
+ cp (hl) ;(hl) = 0 ??
+ jr nz,chk_noenemy ;jump if enemy present (non-0)
+ ex de,hl ;de=hl=usable enemy +1
+ pop af ;enemy# to place
+ cal findenemyspecs ;hl = enemy #a specs
+
+ dec de ;goto hp64 (before occ)
+ ldi ;set hp64
+ ldi ;set hitpoints+occ of enemy class
+ ld c,(hl)
+ ldi ;set sprite
+ ld b,(hl) ;bc=@enemy_sprite
+ inc bc ;@sprite-height
+ ld a,(bc)
+ ld b,a ;b = sprite-height
+ ldi ;set sprite + 1
+ ldi ;set x-position
- inc de ;set y-pos
- inc hl ;where to place??
ld a,(hl) ;load placeInfo
- dec a ;is it 1?
+ inc hl
+ inc a ;is it -1?
jr z,random_enemy ;yes: create random value <51 in a
- dec a ;is it 2?
+ inc a ;is it -2?
jr z,lure_enemy ;yes: create a 100% luring enemy
+ inc a ;is it -3?
+ jr z,lure_enemy ;yes: pick one (50% lure)
+ inc a ;is it -4?
+ jr z,ground_enemy ;yes: place @ current ground position
;otherwise?
-halflure_enemy: ;yes (of course it is): pick one (50% lure)
+yset_enemy: ;set 0+3..$FC+3 as y-position
+ ld (de),a
+ jr ypos_OK
+ground_enemy:
+ ld a,(groundpos+15) ;ground height
+ neg ;negative (high ground, low y-pos)
+ add a,50 ;at the bottom
+ ld (de),a ;is turret's position
+ jr ypos_OK
+halflure_enemy:
ld a,(timer) ;look at frame-number
- and %00000001 ;make random if odd frame nr.
- jr nz,random_enemy ;1st possibility: random enemy
+ rra ;make random if odd frame nr.
+ rra ;...well make that frame/2
+ jr nc,random_enemy ;1st possibility: random enemy
lure_enemy: ;2nd possibility: luring enemy
ld a,(y) ;place at same y-pos as YOUR ship
jr ypos_OK
-
random_enemy:
- ld b,e ;b will be added to random-value
- cal Random50 ;make a (in a) random value 0-51
-
+ ld a,64-8 ;=57=screen height (8 is scorebar)
+ sub b ;minus sprite height=bottom
+ ld c,0 ;range=0 to...
+ ld b,a ;...57-y
+ cal Random ;random value on screen
ypos_OK: ;random value successfully created
ld (de),a ;save y-position
-
- ld hl,add2enemy-3 ;offset to xtra enemy info
- add hl,de ;hl points to <xtra info: move>
- ld (hl),1 ;set move-counter to 1
- inc hl ;hl to <xtra info: fire>
-
- ld a,(level_move)
- and %00010000
- jr z,ffiredelayed
- ld a,1 ;set time-to-fire to 1 frame (fires directly)
- jr ffireOK
-ffiredelayed:
- ld a,(level_fire) ;set "ttf" to normal nr of frames
-ffireOK:
- ld (hl),a
- inc hl ;hl to <xtra info: bullettype>
- ld (hl),1 ;type 1
- inc hl ;hl to <xtra info: bullettype>
- ld a,(RanPos)
- and %01111111
- ld (hl),a ;type 1
+ inc de ;@movecounter
+ ldi ;set move-type
+ ld a,1 ;movecounter = 1
+ ld (de),a ;set
+ inc de ;@firecounter
+ ldi ;set time-to-1st-fire
+ ldi ;set firefreq
+ ldi ; " firetype
ret ;return
-;--------------------------- enemy fires --------------------------------------
+;--------------------------- enemy fires -------------------------------------
-Enemy_fires: ;de = x,y
+Enemy_fires: ;de = x,y; c = type; ix = enemy_sprite
+ ld hl,ebullets ;first bullet to check
+ ld b,nrebuls
dec d
- dec d ;d = x-2
- inc e ;e = y+1
+ dec d ;d = x of firing enemy minus 2
- ld b,nrebuls
- ld hl,ebullets
+ ld a,(ix+1) ;the height of the enemy firing this bullet
+ srl a ;halved
+ add a,e ;added to his y-position
+ ld e,a ;into e
+ dec e ;minus one (bullet height)
+
+enemy_fires_again: ;same but hl = first bullet possibly free
+ xor a
find_ebullet:
- ld a,(hl)
- or a
+ cp (hl)
jr z,found_ebullet ;0 = not used
inc hl \ inc hl \ inc hl
- djnz find_ebullet ;look next bullet
+ dnz find_ebullet ;look next bullet
ret
found_ebullet:
- ld b,%1100
- ld a,(level_move)
- and %10000000
- jr z,bulletok
+ ld a,c
+ sub 6
+ jp c,bulletok ;type #0-5 = done (normal/diag)
+ or a
+ jp z,bulletaiming ;type #6 = aiming = type#2..5
+ dec a
+ jr z,bullettriple ;type #7 = triple
+ dec a
+ jr z,bulletdouble ;type #8 = double
+ dec a
+ jr z,bulletwide5 ;type #9 = wide 5x
+ dec a
+ jr z,bulletdquad ;type #10 = double-quad
+ dec a
+ jr z,bulletran ;type #11 = random
+ dec a
+ jr z,firesenemies ;type #12 = mine + Dquad
+ dec a
+ jr z,basefiresenemies ;type #13 = enemies + 10
+ dec a
+ jr z,randomfire ;type #14 = random @full height
+ dec a
+ jr z,bulletwide3 ;type #15 = wide triple
+ dec a
+ jr z,bulletfullfire ;type #16 = straight 5x
+
+randomfire:
+ ld c,0
+ ld b,62
+ cal Random ;a=0..62
+ ld e,a
+ ld (hl),1
+ jp _bulletok
+
+basefiresenemies: ;type #13 = base
+ ld bc,$3A00
+ cal Random
+ ld e,a
+ cal random14
+ ld c,a
+ cal bulletok ;find and fire bullet
+ ld a,boss2enemy ;otherwise place enemy #[boss2enemy]
+ jp place_enemy
+
+firesenemies: ;type #12 = mine / Dquad
+ ld a,(timer)
+ rra ;if odd turn (50% chance)
+ jr c,bulletdquad ;then fire 6x
+ ld a,boss1enemy ;otherwise place enemy #[boss1enemy]
+ jp place_enemy
+
+bulletran: ;type #11 = fires bullets 1-5 at random
+ cal random14
+ ld (hl),a ;set type a=1..5
+ jr _bulletok
+
+bulletdquad: ;type #10 = double-quad
+ cal bulletwide5 ;fire type #1 to 5
+addedgebullets:
+ inc hl
+ ld a,e
+ sub 7
+ ld e,a ;offset 7 up
+ ld c,1 ;type #1 = normal
+ cal enemy_fires_again
+ inc hl
+ ld a,e
+ add a,14
+ ld e,a ;offset 14 down (7 total)
+_enemy_fires_again:
+ jr enemy_fires_again
+
+bulletwide5: ;type #9 = wide 5x (fires 4 dirs + 1 straight)
+ cal bullettriple ;fire type #1, 4 and 5
+ inc hl ;next bullet
+ ld c,2 ;type #2 = down
+ cal enemy_fires_again
+ inc hl
+ ld c,3 ;type #3 = up
+ jr _enemy_fires_again
+
+bulletfullfire: ;type #16 = straight 5 bullets
+ cal bullettriple ;fire 3 bullets at center (offset -2,+0,+2)
+ inc e \ inc e ;restore base (Y)position
+ jr addedgebullets ;fire 2 more bullets (at offsets -7 and +7)
+
+bullettriple: ;type #7 = triple
+ cal bulletdouble+1 ;fire double weapon (offset +0,+2)
+ dec e \ dec e ;two px back up
+ dec e \ dec e ;and another two up (offset -2)
+ inc hl ;next bullet position
+ ld c,1 ;type #1 = normal
+ jr _enemy_fires_again ;find and fire another bullet
+
+bulletdouble: ;type #8 = double
+ dec e ;one up (1st bullet not centered:offset -1,+1)
+ ld c,1 ;type #1 = straight
+ cal bulletok ;fire bullet
+ inc hl ;next bullet position
+ inc e
+ inc e ;two px down
+ jr _enemy_fires_again ;find and fire another bullet
+
+bulletwide3: ;type #15 = spread (3 bullets)
+ ld (hl),1 ;type #1 = normal
+ cal _bulletok ;fire
+ inc hl ;next bullet
+ ld c,4 ;type #4 = down 50%
+ cal enemy_fires_again
+ inc hl
+ ld c,5 ;type #5 = up 50%
+ jr _enemy_fires_again
+
+bulletaiming: ;type #6 = aiming = type#2..5
ld a,(y)
- sub e
- add a,10
- jp p,bulletnotup
- ld b,%1011 ;yourY-bulY = negative (=bullet below you)
+ sub e ;a = yourY-bulY = pixels bullet is above you
add a,10
- jp p,bulletnotup
- ld b,%1001 ;yourY-bulY = even more negative (going up)
-
+ jp p,bulletnotup ;jump when 10 pixels below you or higher
+ ld (hl),5 ;go slightly down
+ add a,10 ;10 to 20 pixels below you
+ jp p,_bulletok ;yes: all done.
+ ld (hl),3 ;otherwise move down even more
+ jr _bulletok
bulletnotup:
- sub 20
- jp m,bulletok
- ld b,%1010 ;bullet going down
- sub 10
- jp m,bulletok ;even more going down
- ld b,%1000
+ ld (hl),1 ;normal bullet...
+ sub 20 ;...when...
+ jp m,_bulletok ;...10 pixels below you to 20 pixels above
+ ld (hl),4 ;bullet going slightly up...
+ sub 10 ;...when...
+ jr c,_bulletok ;...20 to 30 pixels above you
+ ld c,2 ;else (more than 30 pixels) move up more
bulletok:
-; ld a,c ;load bullet type
-; add a,a ;type*2 %..Btype.
-; add a,a ;type*4 %.Btype..
-; add a,a ;type*8 %Btype...
- ;add bullet direction %BtypeDir
- ld (hl),b ;set bullet direction
+ ld (hl),c ;set bullet direction
+_bulletok:
inc hl
ld (hl),d ;set x-pos
inc hl
+ ld a,58-5 ;bottom
+ cp e ;bullet-y...
+ jr nc,bulletonscreen ;<bottom (=on screen) is ok (skip next part)
+ ld e,a ;otherwise set y-pos to bottom of screen
+bulletonscreen:
ld (hl),e ;set y-pos
ret
-;----------------------------- enemy bullets ----------------------------------
+;----------------------------- enemy bullets ---------------------------------
Enemy_bullets:
- ld hl,ebullets
- ld b,nrebuls
+ ld hl,ebullets ;hl=bullet pointer
+ ld b,nrebuls ;number of bullets (or _possible_ bullets)
handle_bullet:
psh bc
psh hl
ld a,(hl) ;load bulletType in a
- or a ;is it 0?
- jr nz,enemy_bullet ;no: handle bullet
-next_bullet:
- pop hl ;do not move the <pop hl>
- pop bc
- inc hl \ inc hl \ inc hl
- djnz handle_bullet
+ or a ;bullet present?
+ cal nz,enemy_bullet ;non-0: handle bullet
+ pop hl ;enemy_bullet could've added one or two to hl
+ pop bc ;bullet counter
+ inc hl \ inc hl \ inc hl ;next bullet (3 bytes per bullet)
+ dnz handle_bullet ;loop for each and every bullet
ret
enemy_bullet:
- ld b,a ;save type
- inc hl ;bullet x
- ld a,(hl) ;check if it has reached the left side of scrn
- and %11111110 ;it is <2 (0 or 1)?
- jr z,remove_ebullet ;yes, remove bullet
- dec (hl) ;move one left
- dec (hl) ;and another one
- ld d,(hl) ;d=x
- inc hl ;@y
+ inc hl ;@x
+ ld d,(hl) ;check if it has reached the left side of scrn
+ bit 7,d ;x<0?
+ jr nz,remove_ebullet ;yes, remove bullet
+ dec d ;move one pixel left
+ dec d ;and another one (that makes 2)
+ ld (hl),d ;save new x-coordinate in (HL) and D
+ inc hl ;@y (BTW: x >= -2)
+ ld e,(hl) ;e=y
- ld a,b ;restore type
- cp %1100 ;&&& use <bit ?,a>
- jr z,ebullet_common ;type %1100: normal bullet
- and %111
- jr z,ebullet_down ;type %1000: moving down
dec a
- jr z,ebullet_up ;type %1001: moving up
- ld b,a
+ jr z,ebullet_common ;type 1: normal bullet
+ dec a
+ jr z,ebullet_down ;type 2: moving down
+ dec a
+ jr z,ebullet_up ;type 3: moving up
- ld a,(timer)
- rra
- jr c,ebullet_common
+ ld b,a ;save bulletType
+ ld a,(timer) ;load timer
+ rra ;half speed (CF set every other turn)
+ jr c,ebullet_common ;if bit then normal bullet
- ld a,b
- dec a
- jr z,ebullet_down ;type %1010: moving down 50%
- ;type %1011: moving up 50%
+ dec b
+ jr z,ebullet_down ;type 4: moving down 50%
+ ;type 5: moving up 50%
ebullet_up:
- ld a,(hl)
- dec a
- jp m,ebullet_common
- ld (hl),a
+ dec e ;move up
+ jp m,ebullet_common ;y<top; don't save new value (so y=0)
+ ld (hl),e
jr ebullet_common
-
ebullet_down:
- ld a,(hl)
- inc a
- cp 55
- jr z,ebullet_common
- ld (hl),a
+ inc e ;move down
+ ld a,e ;a=y too
+ cp 58-4 ;y>=bottom?
+ jr nc,ebullet_common ;then keep it there
+ ld (hl),e ;otherwise save new y
ebullet_common:
- ld e,(hl) ;e=y
ld ix,spr_bullete1 ;display enemy bullet
+ psh hl
cal putsprite
+ pop hl ;we'll need it again
ebullet_hits:
ld a,(your_occ)
or a
- jr nz,next_bullet ;0 = you're normal
+ ret nz ;0 = you're normal
- pop hl
- psh hl
- inc hl ;check x
- ld a,(x)
+ ld a,(y) ;check y collision
sub (hl)
add a,6
- jp m,next_bullet
+ ret m
cp 9
- jr nc,next_bullet
+ ret nc
- inc hl ;check y
- ld a,(y)
+ dec hl ;check x
+ ld a,(x)
sub (hl)
add a,6
- jp m,next_bullet
+ ret m
cp 9
- jr nc,next_bullet
+ ret nc
+ ld b,auch_bullet ;set damage-amount
+ psh hl
cal damage_you ;HIT!!
+ pop hl ;save hl to remove the bullet
remove_ebullet:
- pop hl ;hl could be destroyed by damage_you
+ dec hl ;points to bullettype again
ld (hl),0 ;bullet > unused
- jr next_bullet+1 ;next bullet (SKIP THE <POP HL> = one byte)
+ ret
-;--------------------------- handle enemies -----------------------------------
+;--------------------------- handle enemies ----------------------------------
Handle_enemies:
- ld hl,enemies
+ ld hl,enemies+1
ld b,nrenemies ;handle all enemies
handle_enemy:
psh hl
ld a,(hl)
- and %00000011
- jr z,next_enemy ;occ "no enemy" 0
+ and %11
+ jr z,next_enemy ;occ "no enemy" 00
dec a
- jr z,exploding_enemy ;occ "exploding" 1
- ld b,a ;b=2 if moving, otherwise b=1
+ jr z,exploding_enemy ;occ "exploding" 01
-normal_enemy: ;occ "normal" 2 or "moving" 3
- inc hl
- ld c,(hl) ;c = enemy type = de
+normal_enemy:
+ ld c,a ;c = occ-1 = %10 (normal) or %01 (pickup)
+ inc hl ;@sprite
cal find_sprite
- inc hl
- ld a,(hl) ;x
- dec a ;move left
- jr c,remove_enemy ;off screen
- jr z,remove_enemy ;"
- ld d,a
-
- inc hl
+ inc hl ;@x
+ ld d,(hl) ;x
+ inc hl ;@y
ld e,(hl) ;y
- ld a,b ;moving state was stored in b earlier
- dec a ;is it 1?
- cal nz,moving_enemy ;2 = moving enemy
- ld (hl),e
+ inc hl ;@movetype
+ cal moving_enemy
+ dec hl
+
+ ld a,e ;new y value
+ cp 57
+ jr c,enemyonscreenY ;=on screen
+ cp -20 ;moved off at top
+ ld e,0 ;reset to top
+ jr nc,enemyonscreenY
+ ld e,57 ;otherwise reset to bottom
+enemyonscreenY:
+ ld (hl),e ;store new y
dec hl ;@x
+
+ ld a,d ;new x value
+ cp 129 ;x<=128
+ jr c,enemyonscreenX ;=on screen
+ cp -7 ;x<=-8
+ jr c,remove_enemy ;=off screen
+enemyonscreenX:
ld (hl),d ;store new x
- ld a,c ;a = enemy type
- or a ;type 0? (pickup)
+ dec c ;is this a pickup? (c=%01 so ZF=1)
jr nz,check_enemyfire ;no, a normal enemy; let em fire
- ld a,(timer) ;load time
- and %1 ;move left once every 2 turns
- jr z,firing_done ;don't move now
- inc d ;increase x-position (don't move this turn)
- inc (hl) ;and save it
jr firing_done ;continue
check_enemyfire:
- ld bc,add2enemy+1-2 ;offset of <xtra enemy info: fire>
- add hl,bc ;go there (@hl)
- dec (hl) ;decrease counter till next blast
- ld a,(hl) ;load new counter
- or a ;has it reached zero?
- jr nz,firing_done ;finished if not
-
- ld a,(level_fire) ;re-set counter for next blast
- ld (hl),a ;save time to fire
- inc hl ;next byte = bullettype
- ld c,(hl) ;c = bullet type
+ ld bc,4 ;4x inc hl
+ add hl,bc ;@firecount
+ ld a,(hl) ;counter till next blast
+ dec a ;decrease it
+ ld (hl),a ;save new value
+ jr nz,firing_done ;finished if not reached 0 yet
+
+ inc hl ;@firefreq
+ ld a,(hl) ;=time 'til next blast
+ inc hl ;@firetype
+ ld c,(hl) ;in c
+ dec hl
+ dec hl ;@firecount again
+ ld (hl),a ;reset counter for next blast
psh de ;save registers for firing-use
cal Enemy_fires ;fires bullet
pop de ;restore (destroyed by Enemy_fires)
firing_done:
- cal putwidesprite ;display sprite @ix
+ cal putwidesprite ;display sprite @ix
next_enemy:
pop hl
- ld bc,$0004
+ ld bc,enemysize
add hl,bc
pop bc
- djnz handle_enemy
+ dnz handle_enemy
ret
-remove_enemy:
- pop hl
- ld (hl),$0000 ;bye bye enemy
- psh hl
- jr next_enemy
-
exploding_enemy:
inc hl
- psh hl
ld a,(hl)
- cal explosion_stuff ;display explosion
+ cp 16
+ jr nz,keep_enemy ;remove when at last frame
+remove_enemy:
pop hl
-
- ld a,(hl)
- cp 15
- jr z,remove_enemy ;remove when at last frame
+ ld (hl),$0000 ;bye bye enemy
+ jr next_enemy+1 ;continue AFTER pop hl (already done)
+keep_enemy:
inc a
ld (hl),a ;next frame
+ dec a ;1-16 -> 0-15
+ ld ix,spr_explosion ;base sprite
+ inc hl ;@x
+ cal explosion_stuff ;display explosion
jr next_enemy
-;--------------------------- moving enemies -----------------------------------
+;--------------------------- moving enemies ----------------------------------
moving_enemy:
- ld a,(level_move)
- and %1111
- jr z,movetype_updown ;type 0
- dec a
- jr z,movetype_vslow ;1
- dec a
- jr z,movetype_fast ;2
- dec a
- jr z,movetype_vfast ;3
- dec a
- jr z,movetype_smart ;4
- dec a
- jr z,movetype_lure ;5
- dec a
- jr z,movetype_slowlure ;6
- dec a
- jr z,movetype_stoplure ;7
-; dec a
-; jr z,movetype_fulllure ;8
+ dec d ;move left once
+ ld a,(hl) ;how does this enemy move?
+ and a
+ ret z ;0 = (1<)
+ ld b,a
+ ld a,(timer)
+ dec b
+ jp z,movetype_updown ;1 = (1<) up / down
+ dec b
+ jr z,movetype_vslow ;2 = (.25<)
+ dec b
+ jr z,movetype_slow ;3 = (.5 <)
+ dec b
+ jr z,movetype_lslow ;4 = (.75<)
+ dec b
+ jr z,movetype_mfast ;5 = (1.25<)
+ dec b
+ jr z,movetype_fast ;6 = (1.5<)
+ dec b
+ jr z,movetype_vfast ;7 = (2 <)
+ dec b
+ jr z,movetype_xfast ;8 = (3 <)
+ dec b
+ jr z,movetype_slowlure ;9 = (1<) move y towards you 50%
+
+ inc d ;speed 0
+ dec b
+ jr z,movetype_lure ;10 = (0) move y towards you
+ dec b
+ jr z,movetype_slowlure ;11 = (0) lure 1/2 speed
+ dec b
+ jr z,movetype_fulllure ;12 = x+y towards you 1/2 speed
+ dec b
+ jr z,movetype_right ;13 = (.5>)
+ dec b
+ jr z,movetype_fright ;14 = (1>)
+ dec b
+ jr z,movetype_right ;15 = (0)
+ dec b
+ ret z ;16 =
+
+movetype_lboss:
+ ld a,104
+ cp d
+ jr c,dothemovethingy
+ inc d ;x<110: move right
+dothemovethingy:
+ jr movetype_updown ;move up and down and up and down and...
+
+movetype_right:
+ rra
+ ret c ;speed 0 50%
+movetype_fright:
+ inc d ;move right one px
+ ret
movetype_fulllure:
- inc d
- ld a,(timer)
- and 1
- ret z
+ rra
+ ret c ;50% speed
cal movetype_lure
ld a,(x)
cp d
- jr c,lure_left
+ jr c,movetype_vfast ;moves left (again)
lure_right:
- inc d
- ret
-lure_left:
- dec d
+ inc d ;move right
ret
-movetype_stoplure:
- inc d
- jr movetype_slowlure
-
movetype_slowlure:
- ld a,(timer)
- and 1
- ret z
-
+ rra ;half the time
+ ret c
movetype_lure:
+ ld a,110
+ cp d
+ jr nc,dothelurethingy
+ dec d ;x>109: move left
+dothelurethingy:
ld a,(y)
cp e
- jr c,lure_up
-lure_down:
+ ret z ;don't move vertically if equal
+ jr c,lure_up ;below you then move up
+lure_down: ;above then move down
inc e
ret
-lure_up:
- dec e
+lure_up:dec e
ret
movetype_smart:
- ld bc,add2enemy
- add hl,bc
-
- ld a,(timer)
- and %1111
+ inc hl ;@movecount
ld a,(hl)
- jr nz,smartupdate
inc a
-smartupdate:
+ and %1111
ld (hl),a
or a ;reset carry flag
- sbc hl,bc
+ dec hl ;reset hl to <y>
and %11111100
jr z,movetype_fast
+movetype_lslow:
+ and %11
+ ret nz
+ inc d ;don't move 25% of the time
+ ret
+movetype_slow:
+ rra
+ ret c
+ inc d ;don't move 50%
+ ret
movetype_vslow:
- ld a,(timer)
and %11
ret z
- inc d
+ inc d ;don't move 75%
ret
+movetype_mfast:
+ rra
+ ret c ;50% chance (makes it 25% total)
movetype_fast:
- ld a,(timer)
- and %1
- ret z
+ rra
+ ret c ;once every other turn
movetype_vfast:
- dec d ;move left
- ret nz ;finished
- pop hl ;restore stack (no ret used)
- jp remove_enemy ;remove this enemy (off screen)
+ dec d ;move left twice
+ ret
+movetype_xfast:
+ dec d ;woowoo, now that's fast!
+ dec d ;move left trice!
+ ret
movetype_updown:
- ld bc,add2enemy
- add hl,bc
-
+ inc hl ;@movecount
ld a,(hl)
dec a
- jr nz,move_updated
- add a,128
-move_updated:
- ld (hl),a
-
- or a ;reset carry flag
- sbc hl,bc
- and %00100000
- ld a,(hl);&&&ld a,e ;load current y-position
+ and 127 ;range 0..127
+ ld (hl),a ;store new movecounter
+ dec hl ;reset hl to @movetype
+ and %00100000 ;ZF changes once every 64 turns
+ ld a,e ;load current y-position
jr z,movedown
-
moveup: dec a ;decrease y-pos (=move up)
ret m ;don't move off the screen (y<0)
dec e ;save new y-pos
inc e ;otherwise save new position
ret ;and return
-;--------------------------- check collision ----------------------------------
+;--------------------------- check collision ---------------------------------
Enemies_hit:
ld hl,(x) ;e = X, d = Y
ld de,$0707 ;add 7 to both d and e
add hl,de
- ld d,h
- ld e,l ;e = X+7, d = Y+7
+ ex de,hl ;e = X+7, d = Y+7
- ld hl,enemies
+ ld hl,enemies+1
ld b,nrenemies ;check all 20 enemies
check_collision:
- psh hl
+ psh bc ;counter
+ psh hl ;pointer
ld a,(hl)
- and %00000010
- jr z,check_next ;2 or 3 = ok
- inc hl
+ and %10 ;enemy status (%11=normal; %10=pickup)
+ jr z,check_next ;2 or 3 = ok, otherwise: next enemy
+ inc hl ;@sprite
collide_enemy: ;&&& include in Handle_enemy proc
- psh de
cal find_sprite
- pop de
- inc hl
+ inc hl ;@x
ld a,(hl) ;check x match
sub e ;enemy position minus yours minus 7
jp p,check_next
add a,6
- add a,(ix)
+ add a,(ix) ;enemy width
jp m,check_next
- inc hl
+ inc hl ;@y
ld a,(hl) ;check y match
sub d ;same as with x-check
- jp p,check_next
+ jr nc,check_next ;(=jp p)
add a,6
- add a,(ix+1)
+ add a,(ix+1) ;enemy height
jp m,check_next
- dec hl
- dec hl
+ dec hl ;@x
+ dec hl ;@sprite+1
+ dec hl ;@sprite
+ dec hl ;@occ
take_pickup:
- psh hl ;we need hl
- ld hl,2 ;increase score by 2
- cal scoreInc
- pop hl ;we're done
-
- ld a,(hl) ;load enemy type
- or a
- jr nz,collide ;enemy when <>0
-
- psh hl
+ ld a,(hl) ;load enemy occ
+ rra ;if occ = %10 (can't be %00) then pickup
+ jr c,collide ;otherwise normal enemy so you collide
+ ld (hl),0 ;remove
+ rra ;skip this bit (=%1)
+ rra ;this bit specifies the pickup ID (big/small)
+ jr nc,armorpickup ;%0 = pickup increases armor and shield
+ ;%1 = pickup selects (next) upgrade
ld hl,your_pickup ;your pickups
ld a,(hl) ;current
inc a ;go to next
- cp 6 ;pickups >=6
+ cp 4 ;pickups >=4?
jr c,not_maxpickup
- ld a,1 ;yes: reset to pickup 1
+ psh hl ;too much pickups
+ ld hl,250
+ cal scoreInc ;increase score by 250
+ pop hl
+ ld a,1 ;and reset to pickup #1
not_maxpickup:
ld (hl),a ;save new
+ psh de
cal disp_icons ;display altered pickupicons
- pop hl
-
- dec hl ;to enemy occ
- xor a ;set to 0 = gone
- ld (hl),a ;remove
+ pop de ;ld de,$0707
jr check_next ;all done, next..
-destroy_enemy:
- ld (hl),%01 ;set to explode
- inc hl
- ld (hl),0 ;explosionFrame 0
- jr collide_done
+armorpickup:
+ cal inc_armor ;increase armor (like at end of level)
+ ld a,30 ;activate shield for 30*4=120 frames
+ ld (your_shield),a
+ cal disp_icons ;display status bar (new armor value)
+ jr check_next
collide:
- dec hl
- ld a,(hl)
- and %11111100
- jr z,destroy_enemy
ld a,(hl)
- sub %00000100
+ sub auch_ecollide
ld (hl),a
-collide_done:
+ jr nc,enemydamaged ;enemy still ok (HP>=0)
+ ld (hl),%01 ;set to explode
+ inc hl
+ ld (hl),0 ;explosionFrame 0
+enemydamaged: ;damage to enemy delivered
+ ld b,auch_collide ;your damage
cal damage_you
check_next:
- pop hl
- inc hl
- inc hl
- inc hl
- inc hl
- djnz check_collision
+ pop hl ;current enemy base (unaltered)
+ ld bc,enemysize ;bytes per enemy
+ add hl,bc ;pointer to next enemy
+ pop bc ;restore counter
+ dnz check_collision ;loop for all enemies
ret
;--------------------------- story -------------------------------------------
+dostory:
+#ifdef story
+ cal storyPage ;do some story
+ ld a,(hl) ;load next byte in a
+ inc a ;set z-flag if a = $ff
+ jr nz,dostory ;otherwise loop
+ inc hl
+ inc hl ;set hl to beginning of the level
+ ld (levelp),hl ;set the level-pointer
+ ret ;and return
+
storyPage:
- psh hl
- cal _clrLCD
+ psh hl ;hl will be destroyed by _clrLCD
+ rcl _clrLCD ;clear screen
pop hl
+ ld a,(hl)
+ ld (curline),a ;begin line for special effect
storyLine:
+ ld d,(hl) ;vertical position of text
inc hl
- ld e,(hl)
- inc hl
- ld d,(hl)
- ld (_penCol),de
+ ld e,(hl) ;horizontal text-position
+ ld (_penCol),de ;set position
inc hl
- cal _vputs
+ rcl _vputs ;display text
- ld a,(hl)
- dec a
- jr z,storyLine
+ ld a,(hl) ;load next byte
+ inc hl
+ or a ;0 means more text
+ jr z,storyLine ;loop if there is
+ psh af
psh hl
- ld hl,VIDEO_MEM
- ld de,GRAPH_MEM
- ld bc,1024
+ ld hl,VIDEO_MEM ;copy text
+ ld de,dispbuffer ;to GRAPH_MEM
+ ld bc,1024 ;entire screen
ldir
- cal _clrLCD
+ rcl _clrLCD ;clear VIDEO_MEM
pop hl
-
- inc hl
- ld a,(hl)
- inc hl
- ld b,(hl)
+ pop bc ;last byte (<>0) is lines to SFX
psh hl
- cal DoSFX
- cal _getkey
+ cal DoSFX ;do special effects
+ cal getsomekeys ;wait for a key
pop hl
ret
-Story:
- ld hl,story01-1
- cal storyPage
- cal storyPage
- cal storyPage
- ret
-
-story01:
- .db $21,$1d,"Cosmic year 6716" ,0,0,$1d,$06
- .db $1b,$1d,"storyline coming soon..." ,0,0,$1d,$06
- .db $09,$19,"the Nemesis saga continues",0,1
- .db $2e,$21,"with NEMESIS 86" ,0,1
- .db $52,$36,"by Shiar" ,0,0,$19,$23
+DoSFX: psh bc ;in:(curline)=beginLine;b=nrOfLines
-;--------------------------- SFX ---------------------------------------------
-
-CDoSFX:
- ld hl,VIDEO_MEM
- ld de,GRAPH_MEM
- ld bc,1024
- ldir
- ld b,64
- ld a,-1
-
-DoSFX: ;ins: a=beginLine b=nrOfLines
- ld (curline),a
-SFXframe:
- psh bc
-
- ld a,(curline) ;get line number
+ ld a,0 ;get line number
+curline =$-1
inc a ;go to the next line
ld (curline),a ;update
-
ld l,a
- ld h,0
- add hl,hl
+ ld h,0 ;hl=a
add hl,hl
add hl,hl
add hl,hl
+ add hl,hl ;*16 (a pixels down=a*16)
+ sub 64 ;a=a-64
+ neg ;a=64-a (lines from bottom)
ld b,h ;save hl for later
ld c,l
-
- ld de,VIDEO_MEM
+ ld de,VIDEO_MEM ;where to put sfx
add hl,de ;go to ymin
- ld d,h
- ld e,l
-
- ld hl,GRAPH_MEM
- add hl,bc ;hl->logo
-
- ld a,(curline) ;Calculate how many lines to draw
- ld c,a
- ld a,64
- sub c
- ld b,a
+ ex de,hl ;put into de again
+ ld hl,dispbuffer ;source of original
+ add hl,bc ;hl->source
-SFXdisp: ;display this frame on screen
- ld a,b ;psh b (a will not be used)
+sfxlaserdisp: ;display this frame on screen
ld bc,16 ;one line (=16 bytes, you'd know by now)
ldir ;display (copy actually)
ld bc,-16 ;go up one line (not on screen)
add hl,bc ;so the same line will be displayed
- ld b,a ;pop b
- djnz SFXdisp ;repeat until whole screen is displayed
-
- ld b,8
-SFXdelay:
- halt
- djnz SFXdelay
-
- pop bc
- djnz SFXframe
- ret
-
-;--------------------------- show icon ----------------------------------------
-
-drawline:
- ld (hl),a ;draw one piece of the divider-line
- inc hl ;move right (8 pixels = 1 byte)
- djnz drawline ;repeat (16bytes * 8pixels =128= screen width)
- ret
-
-disp_icons:
- ld hl,VIDEO_MEM+(16*56);56 rows down = eight rows from bottom
- ld (PutWhere),hl ;place icons at bottom of normal screen
- ld b,16 ;draw 16x (screen width)
- ld a,%11111111 ;horizontal line mask
- cal drawline ;draw divider-line
-
- ld b,16*7 ;draw 16x (screen width) 7x (height)
- xor a ;blank line mask
- cal drawline ;clear scorebar
-
- cal disp_lives
-
- ld ix,spr_icon01 ;armorIcon
- ld de,$1901 ;icon #1
- cal putwidesprite ;display icon
- cal disp_armor ;display value
-
- ld ix,spr_icon00
- ld a,(torp_occ)
- or a
- jr z,no_torp
- ld ix,spr_icon02 ;torpedoIcon
-no_torp:
- ld de,$2901 ;icon #2
- cal putwidesprite ;display
-
- ld ix,spr_icon03 ;bulletIcon
- ld de,$3901 ;icon #3
- cal putwidesprite ;display icon
- ld hl,$3945 ;position to display bullet-type digit
- ld a,(your_weapon) ;digit
- dec a ;minus one (1=laser)
- cal _disp_armor ;display digit
-
- ld ix,spr_icon00 ;emptyIcon
- ld a,(your_weapon)
- dec a
- jr nz,no_laser
- ld ix,spr_icon04 ;laserIcon
-no_laser:
- ld de,$4901 ;icon #4
- cal putwidesprite
-
- ld ix,spr_icon00 ;emptyIcon
- ld a,(your_multiples)
- and %11
- jr z,no_multiples
- ld ix,spr_icon05
-no_multiples:
- ld de,$5901 ;icon #5
- cal putwidesprite
-
- ld ix,spr_dividerline
- ld de,$6901
- cal putwidesprite
+ dec a ;counter
+ jr nz,sfxlaserdisp ;repeat until whole screen is displayed
- ld a,(your_pickup) ;pickups taken
- add a,a ;picks*2 (sets z-flag)
- jr z,iconsdone ;return if no pickups
- add a,a ;picks*4
- add a,a ;picks*8
- add a,a ;picks*$10
- add a,$09 ;add 0ah
- ld d,a ;y-pos = picks * $10 + $0a (19,29,39,49,59)
- ld e,$01 ;x-pos = bottom (1a01,2a01,3a01,4a01,5a01)
-
- ld ix,spr_icon
- cal putwidesprite
-iconsdone:
- ld hl,GRAPH_MEM ;normal game-screen
- ld (PutWhere),hl ;set sprite-position to normal screen
- ret
+ ld b,11 ;11x 1/200sec = ~20 frames/s
+sfxlaserdelay:
+ halt ;delay
+ dnz sfxlaserdelay ;8x
-disp_armor:
- ld hl,$3925 ;Display Armor left
- ld a,(your_armor) ;load armor left
-_disp_armor:
- ld (_penCol),hl ;place @ armorIcon
- add a,'0' ;make digit
- cal _vputmap ;display char
+ pop bc ;counter
+ dnz DoSFX
ret
-
-disp_lives:
- ld hl,$3900 ;display Lives
- ld (_penCol),hl ;bottom left
- ld hl,savestr+2
- ld (hl),'L'
- inc hl
- ld (hl),'x'
- inc hl
-
- ld a,(your_lives) ;nr of lives in a
- add a,'0' ;make digit
- ld (hl),a
- dec hl \ dec hl
- cal _vputs ;display on screen
+#else
+ rcl _clrWindow
+ ld hl,welldone
+ rcl _puts
+ jp getsomekeys ;wait for a key
+welldone:
+ .db "-CONGRATULATIONS!-",0
+#endif
+
+;--------------------------- proc --------------------------------------------
+
+random14: ;random 1..1+4
+ ld c,1
+ ld b,4
+; cal Random
+Random: ;a=c<random<b+c; destr:none
+ psh hl
+ ld hl,rancount ;amount to increase with (0-255)
+randomloop:
+ inc (hl) ;change for next time
+ ld a,r ;value $0-7F (can be _anything_ so watch out!)
+ add a,0 ;add to last random value
+ranseed =$-1 ;SMC :P
+ add a,(hl) ;add the changing increase value
+ ;(this is because R can be anything;
+ ; ie always be even so freeze when a must be 1<=a<=1)
+ ld (ranseed),a ;save for next time
+ cp b ;a>=b
+ jr nc,randomloop ;then add again
+ add a,c ;a<b; a=a+c
+ pop hl
ret
+rancount: .db 0
-;--------------------------- proc ---------------------------------------------
-
-Random5016:
- cal Random50 ; a = 0..50
- inc a ; a = 1..51
+RandomY: ;HL = random Y 0..50 right side ((1..51)*16-1)
+#ifdef TI86
+ psh bc
+ ld bc,50*256+1 ;range=1..51
+ cal Random ;a = 1..51
+ add a,a
+ add a,a
ld h,0
ld l,a ;hl = 1..51
- add hl,hl ;hl = 1..51 * 2
- add hl,hl ;hl = 1..51 * 4
- add hl,hl ;hl = 1..51 * 8
+ add hl,hl
add hl,hl ;hl = 1..51 * 16 (left side at random y)
- dec hl ;hl = 1..51 * 16 (" at right side of screen)
- ld de,GRAPH_MEM
+ dec hl ;hl = 0..50 * 16 (" at right side of screen)
+ ld de,dispbuffer
add hl,de ;position on screen
+ pop bc
ret
-
-Random50:
- cal Random
- cp 51 ;y may not be more than 50
- ret c ;OK if a<51
- and %00111111 ;a = 0..63
- sub 13 ;a = -13..50
- ret nc ;OK if a>=0
- add a,13+(50-12) ;a = -13..-1 >=> 0..12 >=> 39..50
- ret
-
-Random:
- ld a,(RanPos) ;a handy random-var.
- ld hl,x ;add your x-coord for randomness
- adc a,(hl)
- inc hl ;add your y-coord for randomness
- adc a,(hl)
- ld (RanPos),a ;save altered random-var
- ret ;RanPos also in #a
-
-scoreInc:
+#else
psh bc
- ld bc,(score)
- add hl,bc
- ld (score),hl
+ ld bc,50*256+1 ;range=1..51
+ cal Random ;a = 1..51
+ ld d,a ;*1
+ add a,a ;*2
+ add a,d ;*3
+ ld h,0
+ ld l,a ;hl = 1..51 * 3
+ add hl,hl
+ add hl,hl ;hl = 1..51 * 12 (left side at random y)
+ dec hl ;hl = 0..50 * 12 (" at right side of screen)
+ ld de,dispbuffer
+ add hl,de ;position on screen
pop bc
ret
+#endif
+
+scoreInc: ;increase score by HL
+ psh bc ;don't destroy bc (or any registers Xcept hl)
+ ld bc,(your_score) ;your current score in bc
+ psh af ;don't destroy a either
+ ld a,(hardcore) ;load hardcore mode settings in a
+ or a ;is it zero?
+ jr z,scoreincok ;then skip the next instruction (score = ok)
+ add hl,hl ;otherwise (hardcore) double the inc.score
+scoreincok:
+ pop af ;restore a register
+ add hl,bc ;add bc to hl (or vice versa)
+ ld (your_score),hl ;save new increased score
+ pop bc ;all registers to what they were
+ ret
-find_sprite: ;destroyed: de ix
- psh hl
- ld e,(hl) ;e = enemy type
- ld d,0 ;de = e
- ld hl,sprites ;hl = @sprites offset-table
- add hl,de ;points to offset of current enemy offset
- ld e,(hl) ;de = @enemy offset
- ld d,0
-
- ld ix,spr_enemy00 ;first enemy sprite
- add ix,de ;add offset for current enemy
- add ix,de ;twice (offset stored as offset/2)
- pop hl
+find_sprite: ;in:hl=enemy+type | out:ix=sprite to enemy
+ ld a,(hl) ;sprite byte #1
+ .db $DD,$6F ;ld hx,a
+ inc hl ;@sprite+1
+ ld a,(hl) ;sprite byte #2
+ .db $DD,$67 ;ld lx,a ;ld ix,(hl)
ret
BLACKLCD:
ld hl,VIDEO_MEM ;screen location (top left)
ld de,VIDEO_MEM+1
ld (hl),%11111111
- ld bc,1024-1 ;do it 1024 times = entire screen
+ ld bc,scrwidth*64-1 ;do it 1024 times = entire screen
ldir
+#ifdef TI83
+ cal fastCopy
+#endif
set 3,(iy+5) ;set white on black
ret
-waitnokeypressed:
- halt \ halt
- cal GET_KEY
- or a
- jr nz,waitnokeypressed
- ret
-
-Decompress:
- ld a,(hl)
- bit 7,a
- jr z,Compressed
- inc hl
- and 01111111b
- ld b,0
- ld c,a
- ldir
- jr Decompress
-Compressed:
- psh af
- or %11111100
- ld b,a
- inc hl
- ld c,(hl)
- inc hl
- pop af
- and %01111100
- rrca
- rrca
+getsomekeys:
+ halt ;wait a li'l while and save batteries :P
+ halt
+ rcl GET_KEY ;input keys
or a
- ret z
- psh hl
- ld h,d
- ld l,e
- add hl,bc
- inc a
- inc a
- ld b,0
- ld c,a
- ldir
- pop hl
- jr Decompress
+ jr z,getsomekeys ;wait if none
+ cp K_SECOND ;2nd pressed?
+ ret z ;then return with zf set
+ cp K_ENTER ;enter pressed
+ ret ;then return with zf set, otherwise zf reset
-;--------------------------- game over / new game / death ---------------------
-chartable:
- .db 0,"!<>^",0,0,0,0
+releasekeys:
+ halt
+ ld a,%10000000 ;all key-masks
+ out (1),a
+ in a,(1)
+ inc a ;cp %11111111 (no keys pressed)
+ jr nz,releasekeys ;keep waitin
+ jp GET_KEY ;clear buffer
+
+findenemyspecs: ;enemy #a specs in (hl); in:b=0; out:ac=?
+ ld hl,enemyspecs ;enemy "0" specs
+ add a,a ;a=type*2
+ ld c,a ;b=0; bc=c=a=type*2
+ add hl,bc ;hl = enm#0 + type*2
+ add a,a ;a=type*4 (max.type<64)
+ ld c,a ;bc=type*4
+ add hl,bc ;hl = enm#0 + type*6
+ add hl,bc ;hl = enm#0 + type*10
+ ret ;hl = enemy specs
+
+;--------------------------- game over / new game / death --------------------
+
+#ifdef shiscore
+chartable: ;use chartable-1 and add GET_KEY scancode
+ .db ".<>!",0,0,0,0 ;down,L,R,up
.db 0,"xtoje0",0 ;enter..clear
- .db " wsnid9",0 ;(-)..custom
- .db "zvrmhc8",0 ;dot..del
- .db "yuqlgb7x" ;0..xvar
- .db 0,"-pkfa6'" ;on..alpha
- .db "54321.",0,0 ;F5..more
-
-own_name:
- .db 7,"nemesis"
+ .db " wsnid9",0 ;(-)..custom
+ .db "zvrmhc8",0 ;dot..del
+ .db "yuqlgb7#" ;0..xvar
+ .db $D9,"-pkfa6'" ;on..alpha
+ .db "54321",$D0,0,'*' ;F5..F1,2nd,exit,more
+
+save_lvl:
+ ld hl,storesave_end-storesave_start
+ psh hl ;size
+ ld hl,storesave_start
+ psh hl ;dest
+ ld hl,4+storesave_start-_asm_exec_ram
+ psh hl ;src
+ jr storesmtn
save_hi:
- ld hl,own_name-1 ;find own variable
+ ld hl,storehi_end-storehi_start
+ psh hl ;size
+ ld hl,storehi_start
+ psh hl ;destination
+ ld hl,4+storehi_start-_asm_exec_ram
+ psh hl ;source
+
+storesmtn: ;stores data [stack=src; stack+1=dest; stack+2=size]
+ ld hl,_asapvar ;find own variable
rst 20h ;cal _ABS_MOV10TOOP1
rst 10h ;cal _FINDSYM
- ret c ;not found? who cares...
- xor a
- ld hl,4+stored_data_start-_asm_exec_ram
- add hl,de ;hl=pointer to data in original prog
- adc a,b
- cal _SET_ABS_DEST_ADDR
- xor a
- ld hl,stored_data_start
- cal _SET_ABS_SRC_ADDR
- ld hl,stored_data_end-stored_data_start
- cal _SET_MM_NUM_BYTES
- jp _mm_ldir ;save done (cal \ ret)
-
-game_over:
- pop hl ;=ret (game_over was called from a procedure)
-game_over_nopop:
+ xor a ;bde=pointer to begin of real program
+ pop hl ;data offset
+ add hl,de ;hl=pointer to data in real prog
+ adc a,b ;if hl overflow also increase a
+ rcl _SET_ABS_DEST_ADDR ;destination = real program = ahl
+ xor a ;RAM page #0
+ pop hl ;data position in normal program ($D748+)
+ rcl _SET_ABS_SRC_ADDR ;set as source (ahl)
+ pop hl ;size
+ rcl _SET_MM_NUM_BYTES ;set
+ rcl _mm_ldir ;copy data to real program
+ jp _RAM_PAGE_1 ;and finally: reset ram page
+#endif
+
+game_over: ;stack=+0
cal BLACKLCD ;clear screen
- cal waitnokeypressed
- ld hl,$0603
+#ifdef TI86
+ ld hl,$0603 ;centered on 86
+#else
+ ld hl,$0403 ;centered on 83 (smaller screen)
+#endif
ld (_curRow),hl ;center
ld hl,txt_gameover
- cal _puts ;display "GAME OVER"
+ rcl _puts ;display "GAME OVER"
+ cal releasekeys ;wait for all keys to be released
ld hl,$0007
ld (_curRow),hl
-
- ld de,(score)
- ld hl,(hiscore)
- cal CP_HL_DE
- jr nc,no_hiscore
- ld (hiscore),de
-
-ask_hiname:
- ld ix,hiname
- ld a,9
- ld (hiscorepos),a
+#ifdef shiscore
+ ld de,(your_score) ;current score
+ ld hl,(hiscore) ;hiscore
+ rcl CP_HL_DE ;de<=hl means no hiscore (or same)
+ jr nc,no_hiscore ;skip the new hiscore part
+ ld (hiscore),de ;otherwise save current score as new hiscore
+
+ask_hiname: ;and ask for new hiscore name
+ ld ix,hiname ;where to store the hiscore name
+ ld a,9 ;max. length <9
+ ld (hiscorepos),a ;current char (counts backwards 9-1)
enter_name_loop:
- ld a,'_'
- cal _putc
- ld hl,_curCol
- dec (hl)
+ ld a,'_' ;cursor appearance
+ rcl _putmap ;display (do not advance cursorpos)
nokeypressed:
- halt \ halt
- cal GET_KEY
- or a
- jr z,nokeypressed
+ cal getsomekeys ;wait for any key
+ jr z,nomore ;if [enter] or [2nd] pressed we're all done
- cp K_DEL
- jr z,backup
- cp K_ENTER
- jr z,nomore
- cp K_EXIT
+ ld hl,hiscorepos ;string position
+ cp K_DEL ;[DEL] functions as "backspace"
+ jr z,backup ;delete previous char if pressed
+ cp K_EXIT ;exit also ends name
jr z,nomore
- ld hl,hiscorepos
- ld b,(hl)
- dec b
- jr z,nokeypressed
- ld (hl),b
+ ld b,(hl) ;(hiscorepos)
+ dec b ;next position (counts backwards)
+ jr z,nokeypressed ;if it's 1 (became 0) then don't add no more
+ ld (hl),b ;otherwise save new string position
- ld hl,chartable
+ ld hl,chartable-1 ;chars to add for each key
ld e,a
- ld d,0
- add hl,de
- ld a,(hl)
- or a
- jr z,nokeypressed
-
- ld (ix),a
- cal _putc
- inc ix
- cal waitnokeypressed
- jr enter_name_loop
-
-backup:
- ld hl,hiscorepos
- ld a,(hl)
- cp 9
- jr nc,nokeypressed
- inc (hl)
-
- dec ix
- ld (ix),' '
- ld a,32
- cal _putc
+ ld d,0 ;de = key pressed
+ add hl,de ;add so we know which char to add for this key
+ ld a,(hl) ;load in a
+ or a ;if it's 0 then
+ jr z,nokeypressed ;don't add anything afterall
+
+ ld (ix),a ;save new char
+ rcl _putc ;and also display on screen
+ inc ix ;goto next char
+ cal releasekeys ;wait for the key to be released
+ jr enter_name_loop ;and continue the loop
+
+backup: ;backspace
+ ld a,(hl) ;(hiscorepos)
+ cp 9 ;9 means begin (0 total chars)
+ jr nc,nokeypressed ;nothing to remove so continue loop
+ inc (hl) ;otherwise pos one back
+
+ dec ix ;and string to previous char as well
+ ld a,32 ;remove cursor
+ rcl _putmap ;by replacing it by ' '
ld hl,_curCol
- dec (hl)
- dec (hl)
- jr enter_name_loop
-
-nomore:
- ld a,' '
- cal _putc
- ld (ix),0
- cal save_hi
- jr hiscoredone
-
-no_hiscore:
- ld hl,hiname
- cal _puts
+ dec (hl) ;cursor one back
+ jr enter_name_loop ;continue name loop
+
+nomore: ;name's done
+ ld a,' ' ;remove cursor
+ rcl _putc ;(or actually replace with ' ')
+ ld (ix),0 ;end of string marker (zero-terminated)
+ cal save_hi ;store hiscore with name in real program
+ jr hiscoredone ;continue with game over screen
+#endif
+no_hiscore: ;no new hiscore
+ ld hl,hiname ;just display old name
+ rcl _puts
hiscoredone:
xor a ;clear a (Ahl will be displayed)
ld hl,$1006 ;bottom-1 right
ld (_curRow),hl ;set
- ld hl,(score) ;your score
- cal _dispahl ;display it (a=0)
+ ld hl,(your_score) ;your score
+ rcl _dispahl ;display it (a=0)
+#ifdef TI86
ld hl,$314b ;bottom-1 right before score ^^
+#else
+ ld hl,$312b
+#endif
ld (_penCol),hl ;set
ld hl,txt_score ;"Score"
- cal _vputs ;display (small)
+ rcl _vputs ;display (small)
ld hl,$1007 ;bottom right
ld (_curRow),hl ;set
ld hl,(hiscore) ;hi-score
- cal _dispahl ;display
+ rcl _dispahl ;display
+#ifdef TI86
ld hl,$3946 ;bottom right before hiscore ^^
+#else
+ ld hl,$3926
+#endif
ld (_penCol),hl ;set
ld hl,txt_hiscore ;"Hiscore"
- cal _vputs ;display (small)
+ rcl _vputs ;display (small)
res 3,(iy+5)
- ld b,16
- ld de,16
- ld hl,VIDEO_MEM+(49*16)-1
+ ld b,scrwidth
+ ld de,scrwidth
+ ld hl,VIDEO_MEM+(49*scrwidth)-1
restore_line:
set 1,(hl)
add hl,de
- djnz restore_line
+ dnz restore_line
- cal _getkey ;wait for keypress
+ cal getsomekeys ;wait for keypress
jp quit ;restore some things and return to TI-OS/shell
-New_game:
- xor a ;score 0
- ld (score),a ;reset score
- ld (score+1),a ;reset score
- ld (torp_occ),a ;no torpedoes
- ld (your_weapon),a ;no laser
+invship: ;procedure used in New_game
+ psh af
+ inc b
+ ld de,12*scrwidth
+ ld hl,scrwidth*(3-12)+VIDEO_MEM;begin pos
+invshipinit:
+ add hl,de
+ dnz invshipinit
+ ld b,12*scrwidth ;12 lines down
+invshiploop:
+ ld a,(hl)
+ cpl ;invert byte
+ ld (hl),a
+ inc hl
+ dnz invshiploop ;loop
+ pop af
+ ret
+
+New_game: ;start a new game (SP=+0)
+ rcl _clrLCD
+#ifdef TI86
+ ld a,VIDEO_MEM/$400
+ ld (PutWhere),a ;will be reset after displaying iconbar
+#endif
+ ld ix,spr_ship01 ;first ship: sprite
+ ld de,$0105 ;position
+ ld b,4 ;number of ships to display
+dispshipsloop:
+ psh bc ;counter
+ psh de ;position
+ ld h,e
+#ifdef TI86
+ ld l,40 ;x=40
+#else
+ ld l,30
+#endif
+ ld (_penCol),hl ;small cursor position
+ psh ix ;ix destroyed by _vputmap
+ ld hl,txt_difhardcore ;hardcore ships text
+ ld a,b ;ship displaying (4 to 1)
+ dec a ;minus 1 (3..0)
+ psh af
+ and %10 ;gives 1,1,0,0 (for ships 0,0,1,1)
+ jr z,dispdifficulty ;0 indicates hardcore difficulty ship
+ ld hl,txt_difnormal ;normal difficulty ships text
+dispdifficulty:
+ rcl _vputs ;display difficulty
+#ifdef TI86
+ ld a,95
+#else
+ ld a,70
+#endif
+ ld (_penCol),a ;set x=95
+ pop af ;ship nr (backwards 3..0)
+ ld hl,txt_shpbeam ;updouble for ships 1
+ and %1 ;gives 0,1,0,1 (for ships 0,1,0,1)
+ jr nz,dispsbeam
+ ld hl,txt_shplaser ;tailbeam for ships 0
+dispsbeam:
+ rcl _vputs ;display special beam type
+ pop ix
+ pop de
+ psh de ;peek de
+ cal putwidesprite ;display ship
+ pop de
+
+ ld bc,spr_ship01i-spr_ship01+2
+ add ix,bc ;go to next ship
+ ld a,12 ;below the previous one
+ add a,e
+ ld e,a
+ pop bc
+ dnz dispshipsloop ;loop
+
+ ld b,0 ;menu pos.
+selectship:
+ psh bc
+ cal invship
+#ifdef TI83
+ cal fastCopy
+#endif
+ cal getsomekeys
+ pop bc
+ jr z,startthenewgame ;enter/2nd
+ cp K_EXIT
+ jp z,menuexit ;go game over when exit was pressed
+ psh bc
+ cal invship ;display selection bar on current ship
+ pop bc
+ cp K_DOWN ;down pressed?
+ jr nz,selnotdown
+ inc b ;move selection down
+selnotdown:
+ cp K_UP ;up pressed?
+ jr nz,selnotup
+ dec b ;move selection up
+selnotup:
+ ld a,b ;new selection
+ and %11 ;must be 0..3
+ ld b,a ;in b again
+ jr selectship ;loop
+
+startthenewgame:
+ ld hl,spr_ship01-(spr_ship02-spr_ship01)
+ ld de,spr_ship02-spr_ship01
+ psh bc ;save b (ship#)
+ inc b ;your ship #0-3++
+ ld a,b ;ship #1-4
+searchyourship:
+ add hl,de ;next ship
+ dnz searchyourship
+ ld (your_ship),hl
+ and 1 ;gives: 1,0,1,0 for the ships
+ xor 1 ;well, make it 0,1,0,1 :)
+ jr z,whichship ;ships 0 have bullets
+ ld a,maxweapon ;ships 1 have lasers (0,8,0,8)
+whichship:
+ ld (your_weapon),a ;set bullet#1 or laser#1 depending on ship
+ pop af ;ship# 0..3
+ and %10 ;ships give 0,0,1,1
+ ld (hardcore),a ;hardcore mode set for ships 3 and 4
+ xor a ;ld a,0
+ ld (your_score),a ;reset score
+ ld (your_score+1),a ;reset score (0)
+ ld (your_extra),a ;no extra beam
ld (your_pickup),a ;reset pickups
ld (your_multiples),a ;no multiples
- inc a ;level #1
- ld (level),a ;reset level nr
- ld hl,level01 ;set level pointer to level#1
+ inc a ;ld a,1
+ ld (level),a ;reset level nr (#1)
+ ld hl,levelstart ;set level pointer to level#1
ld (levelp),hl ;reset level pointer
- inc a ;ld a,2
- ld (your_weapon),a ;default weapon
ld a,4
ld (your_lives),a ;3 lives (4 will be decreased @ You_die)
ld (pickuptimer),a ;next pickup after 4 enemies destroyed
- inc a ;ld a,5
- ld (your_armor),a
- ld a,(weapons+1) ;max number of bullets (varies per weap.class)
- ld (ybuls),a
-
-You_die:
- ld hl,your_lives
- dec (hl) ;decrease lives
- ld a,(hl) ;load lives left
- inc a ;if lives=0ffh then a=0
- jp z,game_over ;if so, game's over
- jr nonext_level
-
-;--------------------------- next level ---------------------------------------
-
-Next_level:
- ld hl,level ;level number
- ld a,(hl)
- inc a
- ld (hl),a
+
+You_die: ;stack must be +1
+ ld a,24
+ ld (your_armor),a ;24 HPs/shields
+ ld a,(your_lives) ;load lives left
+ dec a ;decrease lives
+ ld (your_lives),a ;if lives=0ffh GO
+ inc a ;if -1 then zf set now
+ jp z,game_over ;and game's over
+ jr samelevel
+
+;--------------------------- next level --------------------------------------
+
+Next_level: ;stack must be +1
+ pop hl
+
+ cal inc_armor ;increase armor
ld hl,(levelp) ;level pointer
- ld bc,5+32+4+3 ;advance one level
+ ld b,0 ;advance one level
+ ld c,(hl)
+ add hl,bc ;passed the enemies
+ ld c,9
add hl,bc ;update to point to next level
ld (levelp),hl ;save
+ ld a,(level) ;level number
+ inc a ;next level #
+ cp endlevel+1 ;last level done?
+ jr c,gamenotdone ;no: continue game
+gamedone: ;yes:
+ cal dostory ;display end (hl=(levelp))
+ ld hl,500
+ cal scoreInc ;game complete bonus: 500
+ jp game_over ;game over (+hiscore)
+gamenotdone:
+ ld (level),a
+
+ add a,a
+ add a,a
ld h,0 ;increase score....
- ld l,a ;by level number
+ ld l,a ;by level number * 4
ld bc,20
add hl,bc ;plus 20
cal scoreInc ;update score
-nonext_level:
+samelevel:
+ ld hl,invertmode
+ ld de,_invert ;sets B<>W mode
+ ldi ;ld (_invert),(invertmode)
+ ld de,your_shipspr ;sets your ship's sprite
+ ldi ;ld (your_shipspr),(your_ship)
+ ldi ;and second byte (heh it's a word)
+
ld a,80
ld (nextevent),a ;time to first enemy appearance
ld hl,(levelp) ;level pointer
- ld a,(hl) ;load new level-enemy type
- ld (level_enemy),a ;set level-enemy
+#ifdef story
+ dec hl ;byte before level (boss byte)
+ xor a ;if it's zero it means here's a story
+ cp (hl)
+ inc hl ;begin of level
+ cal z,dostory ;do the story and set (levelp) to real level
+#endif
+
+ ld a,(hl) ;number of (different) enemies in this level
inc hl
+ ld c,a
+ ld (nrlvlenemies),a ;set nr of enemies-1
+ ld b,0 ;bc=c so we can use ldir
+ ld de,lvlenemies ;table of enemies
+ ldir ;load enemies to table
ld a,(hl) ;load new appearance-time
- ld (eventtime),a ;set
+ ld (eventtime),a
+ inc hl
+ ld a,(hl)
+ ld (eventtime+1),a ;set
inc hl
ld a,(hl) ;load nr of enemies in this level
ld (eventleft),a ;set nr of events left
inc hl
- ld a,(hl) ;movement of enemies in this level
- ld (level_move),a ;do it
- inc hl
- ld a,(hl) ;how frequent the enemies fire a bullet
- ld (level_fire),a ;consider it done
-
- inc hl
- ld de,spacespace
- ld bc,17+17+2
- ldir
+ ld de,level_info
+ ld c,4 ;5xLDI: loads (level_info) (spacespace)
+ ldir ; (stars1) (stars2)
+ ld a,1
+ ld b,16 ;fill (groundpos)
+fillground:
+ ld (de),a
+ inc de
+ dnz fillground
ld ix,starx1
ld b,nrstars1
cal placestars
- ld hl,RanPos
- inc (hl)
ld ix,starx2
ld b,nrstars2
cal placestars
ld (timer),a ;reset time
ld hl,your_occ ;hl = your_occ
ld (hl),a ;reset your ship (not exploding)
- inc hl ;hl = your_inv
- ld (hl),25 ;set 25*4=100 frames invulnerable
- ld hl,x ;begin position x=...
- ld (hl),a ;...=a=0=left
- inc hl ;y=...
- ld a,24 ;...=24=middle
- ld (hl),a ;your y
-
- ld a,(torp_occ)
- or a ;no torpedoes?
- jr z,torpsclear ;then just continue (=0)
- ld a,1 ;if so, set to "ready to fire" (=1)
-torpsclear:
-
- ld de,$0018 ;x=0, y=24 (like you..)
-; cal Place_multiples ;place all multiple-positions at (0,24)
+ inc hl ;hl = your_shield
+ ld (hl),25 ;set 25*4=100 frames shielded
+ ld de,$1820
+ ld (x),de ;begin position (x,y)
+ cal Place_multiples ;place all multiple-positions at that (0,24)
+
+ cal loadweapon ;load (your_weapon)
+ xor a
ld hl,enemies ;remove all enemies and bullets
- ld (hl),0 ;clear first byte
+ ld (hl),a ;clear first byte
ld de,enemies+1 ;copy this to the next byte
- ld bc,(add2enemy*2)+((nrybuls+nrebuls)*3)-1
- ldir ;clear enemy-info + enemiesxtra + all bullets
-
-;--------------------------- setup game ---------------------------------------
+#ifdef TI86 ;on '86 everything's located here
+ ld bc,(nrenemies*enemysize)+(nrybuls*4)+(nrebuls*3)-1
+#else ;on '83 it's a little harder...
+ ld bc,(nrenemies*enemysize)-1
+ ldir ;just clear the enemies
+ ld hl,ybullets ;now remove all the bullets (different loc.)
+ ld (hl),a ;clear 1st byte
+ ld de,ybullets+1 ;copy2next
+ ld bc,(nrybuls*4)+(nrebuls*3)-1
+#endif
+ ldir ;clear enemies + ybullets + ebullets
+
+;--------------------------- setup game --------------------------------------
game_setup:
- cal BLACKLCD
- ld hl,$0703
- ld (_curRow),hl ;center
+ cal BLACKLCD ;white on black
ld hl,txt_level
- cal _puts ;display "LEVEL "
+ ld de,$0703
+ ld (_curRow),de ;center
+ rcl _puts ;display "LEVEL "
- ld a,(level)
+ ld a,(level) ;current level
ld l,a
- ld h,$00
-
- cal UNPACK_HL
- add a,'0'
- ld b,a
- cal UNPACK_HL
- add a,'0'
- cal _putc ;display second digit
+ ld h,0 ;in hl
+ rcl UNPACK_HL ;create first digit
+ add a,'0' ;0-9
+ ld b,a ;into b
+ rcl UNPACK_HL ;second digit
+ add a,'0' ;0-9
+ rcl _putc ;display second digit
ld a,b
- cal _putmap ;display first digit
+ rcl _putmap ;display first digit
- ld hl,$0904
- ld (_curRow),hl ;display lives left below level nr
ld hl,txt_lives ;bar text: "Lx0"...
+ ld de,$0904
+ ld (_curRow),de ;display lives left below level nr
+ rcl _puts
ld a,(your_lives) ;lives left
- add a,'0' ;make value
- ld (txt_lives+3),a ;add to text
- cal _puts ;display the string
- res 3,(iy+5) ;set white on black
+ add a,'0' ;make value 0='0'
+ rcl _putc
+
+ cal releasekeys ;wait for user to release all keys
+ ld hl,txt_savekey ;"Press [F1] to save"
+ ld de,$3A46 ;bottom-right
+ ld (_penCol),de
+ rcl _vputs
- cal _getkey ;wait for keypress
+ res 3,(iy+5) ;set white on black
+ cal getsomekeys ;wait for keypress
+#ifdef shiscore
+ cp K_F1
+ cal z,save_lvl
+#endif
- cal CLEARLCD ;clear screen
- cal disp_icons ;display bottom icons
- ret
+ rcl _clrLCD ;clear screen
+ cal disp_icons ;display bottom icons +ret
+ jp game_main_loop
placestars:
- cal Random5016 ;a = (0..50)*16 = random y-pos
+ cal RandomY ;a = random y-pos 1..bottom
ld a,b ;a = b = star nr. = 1..7
add a,a ;a = 2b = 2..14
ld d,0
ld e,a ;de = a = 2-14
- add hl,de ;add to random y => random pos anywhere
+ or a
+ sbc hl,de ;substract from rand y => random pos anywhere
ld (ix),l ;save x-pos (l)
ld (ix+1),h ;save y-pos (h)
inc ix \ inc ix ;next star
- djnz placestars ;repeat for all stars
+ dnz placestars ;repeat for all stars
+ ret
+
+loadweapon:
+ ld a,(your_weapon)
+ add a,a ;weap*2
+ add a,a ; *4
+ add a,a ; *8
+ ld c,a
+ ld b,0
+ ld hl,weapondata
+ add hl,bc
+ ld a,(hl)
+ ld (weapdamage),a ;damage of bullets
+ inc hl
+ ld a,(hl)
+ ld (weapdaminc),a ;damage increase
+ inc hl
+ ld a,(hl)
+ and %00011111 ;laser duration
+ ld (laserdur),a
+ ret
+
+;--misc--
+#ifdef TI83
+_clrLCD:
+ rcl _clrlcdf
+ ld hl,dispbuffer ;move from (hl) = top left
+ ld (hl),0 ;first pixel will be copied all over the screen
+ ld de,dispbuffer+1 ;(de) = next pixel, thus clearing whole screen
+ ld bc,scrwidth*64-1 ;loop 896 times = (128/8) * (64-8 for scorebar)
+ ldir ;all clear!
ret
+#endif
-;--------------------------- putsprite ----------------------------------------
-;--------------------------- de =(X,Y) ----------------------------------------
+;-----------------------------------------------------------------------------
+;--------------------------- putsprite ---------------------------------------
+;-----------------------------------------------------------------------------
+;in: de=(x,y); ix=sprite
+;out: ix=behind sprite; hl:a=right below sprite; b=0; d=width; ce=?
-offsets_table:
- .db 128,64,32,%10000,%01000,%00100,%00010,%00001
+#ifdef TI86
putsprite:
- ld a,d ;a = X
- and %00000111 ;a = X mod 8 = bit nr. to mask
- ld hl,offsets_table ;pixel mask table
- ld c,a ;bit nr.
- ld b,0 ;word
- add hl,bc ;add to table
- ld a,(hl) ;a = pixel mask
- ld (_smc1+1),a ;alter pixel mask
-
- ld hl,GRAPH_MEM ;save-location
- ld a,e ;y-coord
- add a,a ;y*2
- add a,a ;y*4
- add a,a ;y*8
- rl b ;b (=0) =b*2+overflow (if y>32 then bc=bc+256)
- add a,a ;y*16 (width of screen)
- rl b ;b=b*2+overflow (if y>64 then bc=bc+512)
- srl d ;d/2
- srl d ;d/4
- srl d ;d/8 (8 bits in byte) ** c is set when overflow
- add a,d ;a = (Y*16+X/8) mod 256
- jr nc,_n1 ;jump if no carry = no overflow = a<=255
- inc b ;a>255 so increase bc by 256
-_n1: ld c,a ;c = (Y*16+X/8) mod 256
- add hl,bc ;bc = Y*16+X/8
-
- ld d,(ix)
- ld b,(ix+1)
-_oloop: psh bc ;Save # of rows
- psh hl ;Save screen address
- ld b,d ;Load width
- ld c,(ix+2) ;Load one line of image
- inc ix
-_smc1: ld a,1 ;Load pixel mask
-_iloop: sla c ;Test leftmost pixel
- jr nc,_noplot ;See if a plot is needed
- ld e,a ;OR pixel with screen
+ ld c,(ix) ;save width
+_putsprite: ;putsprite with custom width
+ ld a,d ;a=X
+ bit 7,d ;check sign bit of X
+ jr z,CSpositive ;X>=0
+
+ neg ;a=|X|
+ cp (ix) ;off screen?
+ ret nc ;X<=-width: don't draw at all
+ ld b,a ;b=|X|mod 8=1..7=bits to draw
+ ld a,%11111111 ;all bits set (draw everything)
+CSclipleft:
+ srl a ;remove first bit in a for each b
+ dnz CSclipleft ;b=1: a=%01111111
+ ;b=2: a=%00111111
+ ;b=3: a=%00011111
+ ;b=4: a=%00001111
+ ;b=5: a=%00000111
+ ;b=6: a=%00000011
+ ;b=7: a=%00000001
+ res 7,d ;X+128 (right side of screen)
+ dec e ;Y--
+ jr CSdisplay ;done clipping
+
+CSpositive:
+ sub 129-8 ;minus (screen width - byte width)
+ ld b,a
+ ld a,%11111111 ;clipmask
+ jr c,CSdisplay ;x+width<128 then entire sprite is on screen
+ inc b ;b = number of pixels off screen
+CSclipright:
+ add a,a ;remove last bit in a for each b
+ dnz CSclipright ;b=1: a=%11111110
+ ;b=2: a=%11111100
+ ;b=3: a=%11111000
+ ;b=4: a=%11110000
+ ;b=5: a=%11100000
+ ;b=6: a=%11000000
+ ;b=7: a=%10000000
+ ;b>7: a=%00000000 = off screen
+
+CSdisplay: ;display the sprite ix at (d,e) masked
+ ld (CSclipmask),a ;set mask
+ cal findpixel ;convert de to screen location hl:a
+ ld (CSbitmask),a
+
+ ld d,c ;width
+ ld b,(ix+1) ;height
+CSyloop:
+ psh bc ;save rows to go
+ psh hl ;screen
+ ld b,d ;width
+ ld a,(ix+2) ;load image line
+ and 255 ;mask
+CSclipmask =$-1
+ ld c,a ;c=image
+ inc ix ;next
+CSbitmask =$+1
+ ld a,1 ;saved bitmask
+CSxloop:
+ sla c ;test leftmost pixel
+ jr nc,CSnodraw ;don't draw if it's 0
+ ld e,a ;psh af: save bitmask
or (hl)
- ld (hl),a
- ld a,e
-_noplot:rrca
- jr nc,_notedge ;Test if edge of byte reached
- inc hl ;Go to next byte
-_notedge:
- djnz _iloop
- pop hl ;Restore address
- ld bc,16 ;Go to next line
- add hl,bc
- pop bc ;Restore data
- djnz _oloop
- ret
+ ld (hl),a ;OR pixel with screen
+ ld a,e ;pop af
+CSnodraw:
+ rrca ;next bit
+ jr nc,CSbitdrawn ;carry set if bit "jumped"
+ inc hl ;next byte
+CSbitdrawn:
+ dnz CSxloop
+ pop hl ;screen at x-offset=0
+ ld bc,16
+ add hl,bc ;next line
+ pop bc ;rows counter
+ dnz CSyloop
+CSdone: ret
+#endif
+
+#ifdef TI83
+putsprite:
+ ld c,(ix) ;save width
+_putsprite: ;putsprite with custom width
+ ld a,d ;a=X
+ bit 7,d ;check sign bit of X
+ jr z,CSpositive ;X>=0
+
+ neg ;a=|X|
+ cp (ix) ;off screen?
+ ret nc ;X<=-width: don't draw at all
+ ld b,a ;b=|X|mod 8=1..7=bits to draw
+ psh bc
+ ld a,%11111111 ;all bits set (draw everything)
+CSclipleft:
+ srl a ;remove first bit in a for each b
+ dnz CSclipleft ;b=1: a=%01111111
+ ;b=2: a=%00111111
+ ;b=3: a=%00011111
+ ;b=4: a=%00001111
+ ;b=5: a=%00000111
+ ;b=6: a=%00000011
+ ;b=7: a=%00000001
+ pop bc
+ psh af
+ ld a,96
+ sub b
+ ld d,a
+ pop af
+ dec e ;Y--
+ jr CSdisplay ;done clipping
-;--------------------------- putbigsprite -------------------------------------
+CSpositive:
+ sub 97-8 ;minus (screen width - byte width)
+ ld b,a
+ ld a,%11111111 ;clipmask
+ jr c,CSdisplay ;x+width<128 then entire sprite is on screen
+ inc b ;b = number of pixels off screen
+CSclipright:
+ add a,a ;remove last bit in a for each b
+ dnz CSclipright ;b=1: a=%11111110
+ ;b=2: a=%11111100
+ ;b=3: a=%11111000
+ ;b=4: a=%11110000
+ ;b=5: a=%11100000
+ ;b=6: a=%11000000
+ ;b=7: a=%10000000
+ ;b>7: a=%00000000 = off screen
+
+CSdisplay: ;display the sprite ix at (d,e) masked
+ ld (CSclipmask),a ;set mask
+ cal findpixel ;convert de to screen location hl:a
+ ld (CSbitmask),a
+
+ ld d,c ;width
+ ld b,(ix+1) ;height
+CSyloop:
+ psh bc ;save rows to go
+ psh hl ;screen
+ ld b,d ;width
+ ld a,(ix+2) ;load image line
+ and 255 ;mask
+CSclipmask =$-1
+ ld c,a ;c=image
+ inc ix ;next
+CSbitmask =$+1
+ ld a,1 ;saved bitmask
+CSxloop:
+ sla c ;test leftmost pixel
+ jr nc,CSnodraw ;don't draw if it's 0
+ ld e,a ;psh af: save bitmask
+ or (hl)
+ ld (hl),a ;OR pixel with screen
+ ld a,e ;pop af
+CSnodraw:
+ rrca ;next bit
+ jr nc,CSbitdrawn ;carry set if bit "jumped"
+ inc hl ;next byte
+CSbitdrawn:
+ dnz CSxloop
+ pop hl ;screen at x-offset=0
+ ld bc,12
+ add hl,bc ;next line
+ pop bc ;rows counter
+ dnz CSyloop
+CSdone: ret
+#endif
+
+;--------------------------- putbigsprite -----------------------------------=
putwidesprite:
- ld a,d
- and 7
- ld hl,offsets_table
- ld c,a
- ld b,0
- add hl,bc
- ld a,(hl)
- ld (wsmc1+1),a
- ld (wsmc2+1),a
- ld hl,(PutWhere)
-
- ld a,e
- add a,a
- add a,a
- add a,a
-
- rl b
- add a,a
- rl b
- srl d
- srl d
- srl d
- add a,d
- jr nc,n1
- inc b
-n1: ld c,a
- add hl,bc
-
- ld d,(ix)
- ld b,(ix+1)
-woloop: psh bc ;Save # of rows
- psh hl ;Save screen address
- ld b,d ;Load width
- ld c,(ix+2) ;Load one line of image
- inc ix
-wsmc1: ld a,1 ;Load pixel mask
-wiloop: sla c ;Test leftmost pixel
- jr nc,wnoplot ;See if a plot is needed
- ld e,a ;OR pixel with screen
- or (hl)
- ld (hl),a
- ld a,e
-wnoplot:
- rrca
- jr nc,wnotedge ;Test if edge of byte reached
- inc hl ;Go to next byte
-wnotedge:
-wsmc2: cp 1
- jr z,wover_1
-
- djnz wiloop
- pop hl ;Restore address
- ld bc,16 ;Go to next line
- add hl,bc
- pop bc ;Restore data
- djnz woloop
- ret
-wover_1:
- ld c,(ix+2)
- inc ix
- djnz wiloop
- dec ix
- pop hl
- ld bc,16
- add hl,bc
- pop bc
- djnz woloop
+;destr: abcdehl+ix (ix=behind sprite; hl:a=right below sprite; b=0; d=width)
+ ld a,(ix) ;width
+ cp 9
+ jr c,putsprite ;width<=8: just draw the sprite
+
+ ld a,(ix)
+ sub 8 ;width>8
+ psh af
+ ld c,8
+ psh de
+ cal _putsprite ;otherwise draw one column (8 pixels wide)
+ pop de
+ inc ix ;no x-size to load
+ ld a,8 ;next
+ add a,d ;8 pixels right
+ ld d,a
+ pop bc ;then draw the remaining pixels (c=width-8)
+ ld c,b
+ jr _putsprite
+
+safeputsprite: ;cal putsprite with de intact
+ psh de
+ cal putsprite
+ pop de
ret
-;------------------------------------------------------------------------------
-;------------------------------- sprites --------------------------------------
-;------------------------------------------------------------------------------
+;------------------------------- findpixel -----------------------------------
+;based upon CLEM's fp | 131 cycles | 28 bytes | in:(d,e); out:hla; destr:de
-spr_ship01:
- .db 7,7 ;ship alpha class
- .db %01111000 ; ████
- .db %11100000 ; ███
- .db %01111100 ; █████
- .db %11110010 ; ████ █
- .db %01111100 ; █████
- .db %11100000 ; ███
- .db %01111000 ; ████
-spr_ship01i:
- .db 7,7 ;ship alpha class
- .db %00000000 ;
- .db %00000000 ;
- .db %00000000 ;
- .db %00000000 ;
- .db %00000000 ;
- .db %00000000 ;
- .db %00000000 ;
+#ifdef TI86
+findpixel:
+ ld a,e ;a=e=Y
+ add a,a
+ add a,a ;add a,a is 7 cycles faster than add hl,hl
+ ld h,dispbuffer/$400 ;switch to hl (Y<64) & set base to dispbuffer
+PutWhere =$-1 ;screen base position/$400 (where x+y=0)
+ ld l,a ;hl=4*Y
+ ld a,d ;a=d=X
+ rra ;RRA: carry flag must be reset!
+ add hl,hl ;that's what the adds are for :P
+ rra
+ add hl,hl ;hl=16*Y
+ rra ;a=X/8
+ or l
+ ld l,a ;hl=hl+a
+ ld a,d
+ and 7 ;a=X\8
+ cpl
+ rlca
+ rlca
+ rlca
+ ld (FPbit),a
+ xor a
+FPbit =$+1
+ set 0,a
+ ret
+#endif
- .db %01010000 ; █ █
- .db %10100000 ; █ █
- .db %01010100 ; █ █ █
- .db %10100010 ; █ █ █
- .db %01010100 ; █ █ █
- .db %10100000 ; █ █
- .db %01010000 ; █ █
-
-spr_ship02:
-; .db 7,7 ;ship beta class
-; .db %11100000 ; ███
-; .db %11110000 ; ████
-; .db %01111100 ; █████
-; .db %01110010 ; ███ █
-; .db %01111100 ; █████
-; .db %11110000 ; ████
-; .db %11100000 ; ███
+#ifdef TI83
+findpixel:
+ psh bc
+ psh de
+ ld a,d
+ cal ionGetPixel
+ pop de
+ pop bc
+ ret
+#endif
+
+;-----------------------------------------------------------------------------
+;------------------------------- sprites -------------------------------------
+;-----------------------------------------------------------------------------
+
+spr_ship01: ;(normal; up double)
+ .db 7,7 ;ship alpha class (vic viper)
+ .db %11000000 ;██
+ .db %11110000 ;████
+ .db %01111110 ; ██████
+ .db %11101000 ;███ █
+ .db %01111110 ; ██████
+ .db %11110000 ;████
+ .db %11000000 ;██
+spr_ship01i:
+ .db 8,7
+ .db %11001010 ;██ █ █
+ .db %11110101 ;████ █ █
+ .db %01111110 ; ██████
+ .db %11101001 ;███ █ █
+ .db %01111110 ; ██████
+ .db %11110101 ;████ █ █
+ .db %11001010 ;██ █ █
+
+spr_ship02: ;(normal; tail beam)
+ .db 7,7 ;ship gamma class
+ .db %11111000 ;█████
+ .db %01100000 ; ██
+ .db %11111100 ;██████
+ .db %11100110 ;███ ██
+ .db %11111100 ;██████
+ .db %01100000 ; ██
+ .db %11111000 ;█████
spr_ship02i:
-; .db 7,7 ;ship beta class
-; .db %01000000 ; █
-; .db %10100000 ; █ █
-; .db %01010100 ; █ █ █
-; .db %00100010 ; █ █
-; .db %01010100 ; █ █ █
-; .db %10100000 ; █ █
-; .db %01000000 ; █
-
-spr_multiple:
- .db 6,4 ;multiples
- .db %01111000 ; ████
+ .db 8,7
+ .db %11111010 ;█████ █
+ .db %01100001 ; ██ █
+ .db %11111101 ;██████ █
+ .db %11100111 ;███ ███
+ .db %11111101 ;██████ █
+ .db %01100001 ; ██ █
+ .db %11111010 ;█████ █
+
+spr_ship03: ;(hardcore; up double)
+ .db 7,7 ;ship gamma class
+ .db %11111000 ;█████
+ .db %01100000 ; ██
+ .db %11111100 ;██████
+ .db %11100110 ;███ ██
+ .db %11111100 ;██████
+ .db %01100000 ; ██
+ .db %11111000 ;█████
+spr_ship03i:
+ .db 8,7
+ .db %11111010 ;█████ █
+ .db %01100001 ; ██ █
+ .db %11111101 ;██████ █
+ .db %11100111 ;███ ███
+ .db %11111101 ;██████ █
+ .db %01100001 ; ██ █
+ .db %11111010 ;█████ █
+
+ .db 7,7 ;ship delta class (lord british)
+ .db %11000000 ; ██
+ .db %11110000 ; ████
.db %11111100 ; ██████
+ .db %01100010 ; ██ █
.db %11111100 ; ██████
- .db %01111000 ; ████
-
-spr_bullet01:
- .db 5,3 ;your bullets
- .db %00110000 ; ░▒▓█▒
- .db %11111000 ; ░▒▓████▒
- .db %00110000 ; ░▒▓█▒
-spr_bullet02:
- .db 5,3
- .db %11110000 ; ░▒▓███▒
- .db %11111000 ; ░▒▓████▒
- .db %11110000 ; ░▒▓███▒
-spr_bullett1:
- .db 4,3 ;▒▒▒
- .db %11100000 ;▒███
.db %11110000 ; ████
- .db %01110000 ; ███
+ .db %11000000 ; ██
+;spr_ship03i:
+ .db 8,7
+ .db %11111100 ; ██████
+ .db %11110010 ; ████ █
+ .db %11111101 ; ██████ █
+ .db %01100011 ; ██ ██
+ .db %11111101 ; ██████ █
+ .db %11110010 ; ████ █
+ .db %11111100 ; ██████
-spr_bullete1:
- .db 4,3 ;enemy bullets
- .db %01100000 ; ▒█▓▒░
- .db %11110000 ; ▒███▓▒░
- .db %01100000 ; ▒█▓▒░
+spr_ship04: ;(hardcore; tail beam)
+ .db 7,7 ;XC1701II ship
+ .db %11110000 ;████
+ .db %10001100 ;█ ██
+ .db %11110010 ;████ █
+ .db %01011110 ; █ ████
+ .db %11110010 ;████ █
+ .db %10001100 ;█ ██
+ .db %11110000 ;████
+spr_ship04i:
+ .db 7,7
+ .db %11110000 ;████
+ .db %10011100 ;█ ███
+ .db %11111110 ;███████
+ .db %01011110 ; █ ████
+ .db %11111110 ;███████
+ .db %10011100 ;█ ███
+ .db %11110000 ;████
+
+auch_bullet = 1 ;damage to you when hit by an enemy bullet
+auch_ground = 5 ;the same but when you hit the ground
+auch_collide = 4 ;when you hit an enemy
+auch_ecollide = 2*4 ;damage to the enemy that hit you (skip bit 0/1)
-;---------------------------------------- explosion -------------------------------------------
+spr_multiple:
+ .db 6,6 ;multiples
+ .db %00000000 ;
+ .db %00111000 ; ███
+ .db %01111100 ; █████
+ .db %01111100 ; █████
+ .db %01111100 ; █████
+ .db %00111000 ; ███
+spr_multiple2:
+spr_lashit:
+ .db 7,7 ;multiples
+ .db %00111000 ; ███
+ .db %01111100 ; █████
+ .db %11111110 ;███████
+ .db %11111110 ;███████
+ .db %11111110 ;███████
+ .db %01111100 ; █████
+ .db %00111000 ; ███
+
+;-------------------------------- explosions ---------------------------------
+
+;spr_lashit: ;the same as spr_multiple2
+; .db 7,7
+; .db %00111000 ; ███
+; .db %01111100 ; █████
+; .db %11111110 ; ███████
+; .db %11111110 ;▒▒▒███████
+; .db %11111110 ; ███████
+; .db %01111100 ; █████
+; .db %00111000 ; ███
+
+spr_hit:
+hitsprites = 5 ;btw: sprites stored backwards
+ .db 5,4 ;5
+ .db %10101000 ;█▒█ █
+ .db %00001000 ;▒ ▒█
+ .db %10000000 ;█ ▒ ▒
+ .db %10101000 ;█▒█▒█
+
+ .db 5,4 ;4
+ .db %01001000 ; █▒▒█
+ .db %11010000 ;██ █▒
+ .db %00101000 ;▒ █ █
+ .db %11010000 ;██▒█
+
+ .db 5,4 ;3
+ .db %00110000 ; ██
+ .db %10011000 ;█ ██
+ .db %10001000 ;█ ▒▒█
+ .db %00110000 ; ▒██
+
+ .db 5,4 ;2
+ .db %00100000 ;▒ █▒
+ .db %00001000 ; ▒▒ █
+ .db %10110000 ;█▒██
+ .db %01000000 ;▒█ ▒
+
+ .db 4,4 ;1
+ .db %10010000 ;█ █
+ .db %01100000 ; ██
+ .db %01100000 ; ██
+ .db %10010000 ;█ █
spr_explosion:
- .db 8,6 ;1
+ .db 8,5 ;1
.db %00000000
- .db %00011100 ; ███
- .db %00111110 ; █████
- .db %01010110 ; █ █ ██
- .db %00111000 ; ███
+ .db %00011100 ; ███
+ .db %00111110 ; █████
+ .db %01010110 ; █ █ ██
+ .db %00111000 ; ███
.db %00000000
.db 8,6 ;2
- .db %00110000 ; ██
- .db %01001110 ; █ ▒███
- .db %10111110 ; █ █████
- .db %01001111 ; █ ▒████
- .db %00111000 ; ███
- .db %00011010 ; ██ █
+ .db %00110000 ; ██
+ .db %01001110 ; █ ▒███
+ .db %10111110 ;█ █████
+ .db %01001111 ; █ ▒████
+ .db %00111000 ; ███
+ .db %00011010 ; ██ █
.db 8,6 ;3
- .db %10110000 ; █ ██
- .db %01001110 ; █ ███
- .db %10110101 ; █ ██▒█▒█
- .db %01000101 ; █ ▒█▒█
- .db %00111110 ; █████
- .db %01011010 ; █ ██ █
+ .db %10110000 ;█ ██
+ .db %01001110 ; █ ███
+ .db %10110101 ;█ ██▒█▒█
+ .db %01000101 ; █ ▒█▒█
+ .db %00111110 ; █████
+ .db %01011010 ; █ ██ █
.db 8,6 ;4
- .db %00101010 ; ▒ █▒█ █
- .db %01000110 ; █ ▒██
- .db %10110101 ; █ ██ █ █
- .db %01100110 ; ██ ██▒
- .db %00111100 ; ████▒
- .db %01011001 ; █ ██ ▒█
+ .db %00101010 ;▒ █▒█ █
+ .db %01000110 ; █ ▒██
+ .db %10110101 ;█ ██ █ █
+ .db %01100110 ; ██ ██▒
+ .db %00111100 ; ████▒
+ .db %01011001 ; █ ██ ▒█
.db 8,6 ;5
- .db %01000000 ; █▒ ▒ ▒
- .db %00100101 ; ▒█ █▒█
- .db %00010100 ; ▒ ▒█ █ ▒
- .db %01000100 ; █▒ █
- .db %00010010 ; ▒█▒▒█
- .db %10011010 ; █▒ ██ █▒
+ .db %01000000 ; █▒ ▒ ▒
+ .db %00100101 ; ▒█ █▒█
+ .db %00010100 ;▒ ▒█ █ ▒
+ .db %01000100 ; █▒ █
+ .db %00010010 ; ▒█▒▒█
+ .db %10011010 ;█▒ ██ █▒
.db 8,6 ;6
- .db %01000100 ; █ █
- .db %00100000 ; ▒█ ▒ ▒
- .db %00000001 ; ▒ ▒ █
- .db %01000100 ; █ █
- .db %00100010 ; █▒ █
- .db %01001000 ; ▒█ ▒█ ▒
+ .db %01000100 ; █ █
+ .db %00100000 ; ▒█ ▒ ▒
+ .db %00000001 ; ▒ ▒ █
+ .db %01000100 ; █ █
+ .db %00100010 ; █▒ █
+ .db %01001000 ;▒█ ▒█ ▒
.db 8,6 ;7
- .db %00001000 ; ▒ █▒
- .db %11000010 ; ██ ▒ █
- .db %00000000 ; ▒
- .db %00100000 ; ▒█ ▒
- .db %00000001 ; ▒ ▒█
- .db %00110000 ; ▒██▒
+ .db %00001000 ; ▒ █▒
+ .db %11000010 ;██ ▒ █
+ .db %00000000 ; ▒
+ .db %00100000 ; ▒█ ▒
+ .db %00000001 ; ▒ ▒█
+ .db %00110000 ; ▒██▒
.db 8,6 ;8
- .db %00000100 ; ▒█
- .db %00000000 ; ▒▒ ▒
- .db %01000000 ; █
- .db %00000000 ; ▒
- .db %00000010 ; █▒
- .db %00100100 ; █▒ █
+ .db %00000100 ; ▒█
+ .db %00000000 ;▒▒ ▒
+ .db %01000000 ; █
+ .db %00000000 ; ▒
+ .db %00000010 ; █▒
+ .db %00100100 ; █▒ █
spr_yexplosion:
+ .db 8,5 ;1
+ .db %00000000
+ .db %00101100 ; █ ██
+ .db %00011110 ; ████
+ .db %00110100 ; ██ █
+ .db %00011000 ; ██
+ .db %00000000
+
+ .db 8,5 ;2
+ .db %00000000
+ .db %00010100 ; █ █
+ .db %00111010 ; ███ █
+ .db %01110110 ; ███ ██
+ .db %00011000 ; ██
+ .db %00000000
+
+ .db 8,5 ;3
+ .db %00000000
+ .db %00101100 ; █ ██
+ .db %01100110 ; ██ ██
+ .db %01001011 ; █ █ ██
+ .db %00111100 ; ████
+ .db %00000000
+
+ .db 8,5 ;4
+ .db %00111000 ; ███
+ .db %01011100 ; █ ███
+ .db %10010111 ;█ █ ███
+ .db %01000110 ; █ ██
+ .db %00111000 ; ███
+ .db %00000000
+
+ .db 8,6 ;5
+ .db %00111100 ; ████
+ .db %01001111 ; █ ████
+ .db %10100011 ;█ █ ██
+ .db %11000110 ;██ ██
+ .db %01110101 ; ███ █ █
+ .db %00111000 ; ███
+
+ .db 8,6 ;6
+ .db %00101110 ; █ ███
+ .db %10000011 ;█ ██
+ .db %01000101 ; █ █ █
+ .db %10100011 ;█ █ ██
+ .db %01000110 ; █ ██
+ .db %00110000 ; ██
+
+ .db 8,6 ;7
+ .db %00110110 ; ██ ██
+ .db %00000101 ; █ █
+ .db %10001001 ;█ █ █
+ .db %01100001 ; ██ █
+ .db %11000010 ;██ █
+ .db %01010001 ; █ █ █
+
.db 8,6 ;8
- .db %00000000 ;
- .db %00000000 ;
- .db %00000000 ;
- .db %00000000 ;
- .db %00000000 ;
- .db %00000000 ;
+ .db %00000110 ; ██
+ .db %00100001 ; █ █
+ .db %10000000 ;█
+ .db %01000010 ; █ █
+ .db %01000000 ; █
+ .db %00010100 ; █ █
+
+;--------------------------------- bullets -----------------------------------
+
+bullettable:
+ .db (spr_bullet01-spr_bullet01) ;0
+ .db (spr_bullet02-spr_bullet01) ;4
+ .db (spr_bullet03-spr_bullet01) ;8
+ .db (spr_bullet04-spr_bullet01) ;12
+ .db (spr_bullet05-spr_bullet01) ;16
+ .db (spr_bullet06-spr_bullet01) ;20
+ .db (spr_bullet07-spr_bullet01) ;24
+ .db (spr_bullet08-spr_bullet01) ;28
+ .db (spr_bullet09-spr_bullet01) ;32
+ .db (spr_bullet10-spr_bullet01) ;36
+ .db (spr_bullet11-spr_bullet01) ;40
+ .db (spr_bullet12-spr_bullet01) ;44
+ .db (spr_bullet13-spr_bullet01) ;48
+
+spr_bullet01:
+ .db 2,1
+ .db %11000000 ;▒██
+spr_bullet02:
+ .db 4,1
+ .db %11110000 ;▒████
+spr_bullet03:
+ .db 2,2
+ .db %11000000 ;▒██
+ .db %11000000 ;▒██
+spr_bullet04:
+ .db 4,2
+ .db %10110000 ;▒█▒██
+ .db %10110000 ;▒█▒██
+spr_bullet05:
+ .db 4,3
+ .db %01100000 ; ▒██
+ .db %11110000 ;▒████
+ .db %01100000 ; ▒██
+spr_bullet06:
+ .db 5,3
+ .db %00110000 ; ▒██
+ .db %11111000 ;▒█████
+ .db %00110000 ; ▒██
+spr_bullet07:
+ .db 5,3
+ .db %01110000 ; ▒███
+ .db %11111000 ;▒█████
+ .db %01110000 ; ▒███
+spr_bullet08:
+ .db 5,3
+ .db %11110000 ;▒████
+ .db %11111000 ;▒█████
+ .db %11110000 ;▒████
+spr_bullet09:
+ .db 5,4
+ .db %00010000 ; ▒█
+ .db %10111000 ;▒█▒███
+ .db %01111000 ; ▒████
+ .db %00010000 ; ▒█
+spr_bullet10:
+ .db 6,4
+ .db %00111000 ; ▒███
+ .db %01111100 ; ▒█████
+ .db %11111100 ;▒██████
+ .db %00110000 ; ▒██
+spr_bullet11:
+ .db 7,5
+ .db %00011000 ; ▒██
+ .db %11111100 ;▒██████
+ .db %00111110 ; ▒█████
+ .db %01111100 ; ▒█████
+ .db %00011000 ; ▒██
+spr_bullet12:
+ .db 7,6
+ .db %00110000 ; ▒██
+ .db %11111100 ;▒██████
+ .db %00111110 ; ▒█████
+ .db %01111110 ; ▒██████
+ .db %11111100 ;▒██████
+ .db %00111000 ; ▒███
+spr_bullet13:
+ .db 8,8
+ .db %00111100 ; ▒████
+ .db %11111110 ;▒███████
+ .db %01111111 ; ▒███████
+ .db %00011111 ; ▒█████
+ .db %01111111 ; ▒███████
+ .db %11111110 ;▒███████
+ .db %00111100 ; ▒████
+
+spr_bullett1:
+ .db 4,3 ;▒▒▒
+ .db %11100000 ;▒███
+ .db %11110000 ; ████
+ .db %01110000 ; ███
+
+spr_bullete1:
+ .db 4,3 ;enemy bullets
+ .db %01100000 ; ██▒
+ .db %11110000 ;████▒
+ .db %01100000 ; ██▒
+
+;format:[min.damage] [dam.inc] [000:direction 00000:speed] [offset]
+;damage = min.damage + dam.inc*incs (0<=incs<=6)
+;speed in pixels/frame (>=%10010=forward; <=%01110=backwards)
+;direction: 001=straight forward; 010=up; 011=1/2up; 100=down; 101=1/2down
+; 111=laser (speed=duration 00010-00000)
+
+weapondata: ;max = 9x6; 15x5; 21x4; 27x3
+ .db 2,1,%00110010,3,%00000000,0,%00000000,0 ;1 single (1x2+1) 2
+ .db 3,1,%00110011,3,%00000000,0,%00000000,0 ;2 fast (1x3+1) 3
+ .db 2,1,%00110010,0,%00110010,6,%00000000,0 ;3 double (2x2+1) 4
+ .db 2,1,%01110010,2,%10010010,2,%00110010,2 ;4 triple (3x2+1) 6
+ .db 3,2,%00110011,2,%10010010,2,%01110010,2 ;5 (3x3+2) 9
+ .db 4,2,%01110011,2,%10010011,2,%00110011,2 ;6 (3x4+2) 12
+ .db 5,3,%01110100,2,%10010100,2,%00110100,2 ;7 (3x5+3) 15
+ .db 7,4,%01110101,2,%10010101,2,%00110101,2 ;8 (3x7+4) 21
+ .db 9,6,%01110110,2,%10010110,2,%00110110,2 ;9 (3x9+6) 27
+maxweapon = 9
+ .db 1,1,%11100100,3,%00000000,0,%00000000,0 ;1 single (1x1x3) 3
+ .db 2,3,%11100011,3,%00000000,0,%00000000,0 ;2 short (2x1x2) 4
+ .db 1,2,%11100100,3,%11100000,4,%00000000,0 ;3 fat (1x2x3) 6
+ .db 1,2,%11100101,0,%11100000,6,%00000000,0 ;4 double (1x2x4) 8
+ .db 4,4,%11100011,3,%00000000,0,%00000000,0 ;5 short (4x1x2) 8
+ .db 1,2,%11100100,3,%11100000,6,%11100000,0 ;6 triple (1x3x3) 9
+ .db 1,3,%11101000,3,%11100000,6,%11100000,0 ;7 triple long(1x3x7) 21
+ .db 2,5,%11100101,2,%11100000,4,%00000000,0 ;8 double (2x2x4) 32
+ .db 1,9,%11101100,3,%11100000,2,%11100000,4 ;9 big fat lng(1x3xB) 33
+maxlaser = 18
+tailbeam = %00101101 ;180 degrees
+doublebeam = %01010010 ;45 degrees
+extrabulletpos:
+ .db 3 ;tail/double yposition
+
+;------------------------------------ bar ------------------------------------
+
+#ifdef TI86
+
+spr_lship:
+ .db 5,3 ;li'l ship indicating lives left
+ .db %11100000 ;███ ▒▒▒
+ .db %01111000 ; ████ ▒▒▒▒
+ .db %11100000 ;███ ▒▒▒
+lshipsize = 5 ;space between two ship icons
-;--------------------------------------- bar -----------------------------------
-
-spr_iconhalf:
- .db 16,7 ;selected .......:
- .db %11111111 ; ████████
- .db %00000001 ; █
- .db %00000001 ; █
- .db %00000001 ; █
- .db %00000001 ; █
- .db %00000001 ; █
- .db %11111111 ; ████████
spr_icon:
- .db 16,7 ;selected .......:.......:
- .db %11111111,%11111111 ; ████████████████
- .db %11000000,%00000001 ; ██ █
- .db %11000000,%00000001 ; ██ █
- .db %11000000,%00000001 ; ██ █
- .db %11000000,%00000001 ; ██ █
- .db %11000000,%00000001 ; ██ █
- .db %11111111,%11111111 ; ████████████████
+ .db 16,7 ;selected.......:.......:
+ .db %11111111 ;████████████████
+ .db %11000000 ;██ █
+ .db %11000000 ;██ █
+ .db %11000000 ;██ █
+ .db %11000000 ;██ █
+ .db %11000000 ;██ █
+ .db %11111111 ;████████████████
+ .db 7
+ .db %11111111
+ .db %00000001
+ .db %00000001
+ .db %00000001
+ .db %00000001
+ .db %00000001
+ .db %11111111
spr_icon00:
- .db 16,7 ;unused .......:.......:
- .db %10101010,%10101010 ; █ █ █ █ █ █ █ █
- .db %11010101,%01010101 ; ██ █ █ █ █ █ █ █
- .db %10101010,%10101010 ; █ █ █ █ █ █ █ █
- .db %11010101,%01010101 ; ██ █ █ █ █ █ █ █
- .db %10101010,%10101010 ; █ █ █ █ █ █ █ █
- .db %11010101,%01010101 ; ██ █ █ █ █ █ █ █
- .db %10101010,%10101010 ; █ █ █ █ █ █ █ █
-spr_icon01:
- .db 16,7 ;armor ; .......:.......:
- .db %10001111,%10000000 ; █ █████
- .db %10010000,%01000000 ; █ █ █ ▒▒▒
- .db %10101110,%00100000 ; █ █ ███ █ ▒▒▒
- .db %10100111,%10100000 ; █ █ ████ █ ▒▒▒
- .db %10101110,%00100000 ; █ █ ███ █ ▒▒▒
- .db %10010000,%01000000 ; █ █ █ ▒▒▒
- .db %10001111,%10000000 ; █ █████
+ .db 15,7 ;unused .......:.......:
+ .db %10000000 ;█
+ .db %10111111 ;█ █████████████
+ .db %10101010 ;█ █ █ █ █ █ █ █
+ .db %10110101 ;█ ██ █ █ █ █ ██
+ .db %10101010 ;█ █ █ █ █ █ █ █
+ .db %10111111 ;█ █████████████
+ .db %10000000 ;█
+ .db 6
+ .db %00000000
+ .db %11111110
+ .db %10101010
+ .db %01010110
+ .db %10101010
+ .db %11111110
+;spr_icon01:
+; .db 16,7 ;shield .......:.......:
+; .db %10001111 ;█ ███████ █ ▒
+; .db %10011001 ;█ ██ █████ █ ▒
+; .db %10111100 ;█ ████ ████ █ ▒
+; .db %10111000 ;█ ███ █ ██ █ ▒
+; .db %10111100 ;█ ████ ████ █ ▒
+; .db %10011001 ;█ ██ █████ █ ▒
+; .db %10001111 ;█ ███████ █ ▒
+; .db 7
+; .db %11100100
+; .db %11110010
+; .db %01111010
+; .db %10011010
+; .db %01111010
+; .db %11110010
+; .db %11100100
+maxarmor = 63 ;maximum HPs you can get
+;spr_icon02a:
+; .db 16,6 ;tailbeam.......:.......:
+; .db %10000000 ;█ ▒
+; .db %10000011 ;█ ██ ▒
+; .db %10000001 ;█ ███ ▒
+; .db %10111011 ;█ ███ ███ ██ ██▒
+; .db %10000001 ;█ ███ ▒
+; .db %10000011 ;█ ██ ▒
+; .db %10000000 ;█ ▒
+; .db 5
+; .db %00000000
+; .db %00000000
+; .db %11000000
+; .db %10110011
+; .db %11000000
spr_icon02:
- .db 16,7 ;torpedo .......:.......:
- .db %10111000,%00010101 ; █ ███ █ █ █
- .db %10011100,%00010101 ; █ ███ █ █ █
- .db %10111000,%01001010 ; █ ███ █ █ █
- .db %10000000,%11101010 ; █ ███ █ █
- .db %11100001,%11100101 ; ███ ████ █ █
- .db %10011000,%11110101 ; █ ██ ████ █ █
- .db %11100110,%00110010 ; ███ ██ ██ █
+ .db 16,7 ;updouble.......:.......:
+ .db %10000000 ;█ ██ ▒
+ .db %10000000 ;█ ██ ▒
+ .db %10110000 ;█ ██ ██ ▒
+ .db %10011100 ;█ ███ ▒
+ .db %10111011 ;█ ███ ██ ████ ▒
+ .db %10011100 ;█ ███ ▒
+ .db %10110000 ;█ ██ ▒
+ .db 5
+ .db %00011000
+ .db %00110000
+ .db %01100000
+ .db %00000000
+ .db %00011110
spr_icon03:
- .db 16,7 ;bullets .......:.......:
- .db %10000000,%11000000 ; █ ██
- .db %10000011,%11100000 ; █ █████ ▒▒▒
- .db %10011000,%11000000 ; █ ██ ██ ▒▒▒
- .db %11111100,%00000000 ; ██████ ▒▒▒
- .db %10011000,%11000000 ; █ ██ ██ ▒▒▒
- .db %10000011,%11100000 ; █ █████ ▒▒▒
- .db %10000000,%11000000 ; █ ██
+ .db 16,7 ;laser .......:.......:
+ .db %10000000 ;█ ▒
+ .db %10001010 ;█ █ █ ▒▒▒ ▒
+ .db %11101100 ;███ ██ ▒▒▒ ▒
+ .db %11110111 ;████ ███████▒▒▒█▒
+ .db %11101100 ;███ ██ ▒▒▒ ▒
+ .db %10001010 ;█ █ █ ▒▒▒ ▒
+ .db %10000000 ;█ ▒
+ .db 4
+ .db %00000000
+ .db %00000000
+ .db %00000000
+ .db %11111111
spr_icon04:
- .db 16,7 ;laser .......:.......:
- .db %10000000,%00000000 ; █
- .db %10110010,%10000000 ; █ ██ █ █
- .db %10111011,%00000000 ; █ ███ ██
- .db %10011101,%11111111 ; █ ███ █████████
- .db %10111011,%00000000 ; █ ███ ██
- .db %10110010,%10000000 ; █ ██ █ █
- .db %10000000,%00000000 ; █
+ .db 11,7 ;bullets .......:.......:
+ .db %10000000 ;█ ██ ▒
+ .db %10000011 ;█ █████ ▒▒▒ ▒
+ .db %10011000 ;█ ██ ██ ▒▒▒ ▒
+ .db %11111100 ;██████ ▒▒▒ ▒
+ .db %10011000 ;█ ██ ██ ▒▒▒ ▒
+ .db %10000011 ;█ █████ ▒▒▒ ▒
+ .db %10000000 ;█ ██ ▒
+ .db 7
+ .db %11000000
+ .db %11100000
+ .db %11000000
+ .db %00000000
+ .db %11000000
+ .db %11100000
+ .db %11000000
spr_icon05:
- .db 16,7 ;multiple .......:.......:
- .db %10000011,%10000000 ; █ ███
- .db %10000001,%11100110 ; █ ████ ██
- .db %10000001,%11100000 ; █ ████
- .db %10000011,%10000000 ; █ ███
- .db %10011000,%00000000 ; █ ██
- .db %10111100,%11000011 ; █ ████ ██ ██
- .db %10011000,%00000000 ; █ ██
-spr_dividerline:
- .db 8,7
- .db 128,128,128,128,128,128,128 ;128 = %10000000
-
-;---------------------------- texts -------------------------------------------
-
-txt_about: .db " v0.95.A22",127,"by Shiar",0
-txt_email: .db "shiar0@hotmail.com",0
-txt_menu1: .db "CONTINUE",0
-txt_menu2: .db "NEW GAME",0
-
-txt_level: .db "LEVEL ",0
-txt_gameover: .db "GAME OVER!",0
-txt_score: .db "Score",0
-txt_hiscore: .db "Hiscore",0
-txt_lives: .db "Lx0?",0
-
-txt_pressenter: .db "Enter to continue",0
-txt_teacher: .db "(2",Lpi,"*.95)/sin 13",0
-txt_teacherans: .db Lneg,"14.2063168184",0
-
-;---------------------------- save data ---------------------------------------
+ .db 16,7 ;multiple.......:.......:
+ .db %10000011 ;█ ███ ▒
+ .db %10000001 ;█ ████ ██ ▒
+ .db %10000001 ;█ ████ ▒
+ .db %10000011 ;█ ███ ▒
+ .db %10011000 ;█ ██ ▒
+ .db %10111100 ;█ ████ ██ ██▒
+ .db %10011000 ;█ ██ ▒
+ .db 6
+ .db %10000000
+ .db %11100110
+ .db %11100000
+ .db %10000000
+ .db %00000000
+ .db %11000011
-PutWhere .dw GRAPH_MEM ;where to put the wide sprites
-level .db $00 ;level number
-levelp .dw $0000 ;pointer to level data
+#endif
+#ifdef TI83
-score .dw $0000
+spr_lship:
+ .db 3,3 ;li'l ship indicating lives left
+ .db %11000000 ;██ ▒▒
+ .db %01100000 ; ██ ▒▒
+ .db %11000000 ;██ ▒▒
+lshipsize = 3 ;space between two ship icons
-stored_data_start:
-hiscore .dw $0000
-hiname .db "Shiar.95",0
-stored_data_end:
+spr_icon:
+ .db 10,7 ;selected.......:.......:
+ .db %11111111 ;███████████
+ .db %11000000 ;██ █
+ .db %11000000 ;██ █
+ .db %11000000 ;██ █
+ .db %11000000 ;██ █
+ .db %11000000 ;██ █
+ .db %11111111 ;███████████
+ .db 7
+ .db %11100000
+ .db %00100000
+ .db %00100000
+ .db %00100000
+ .db %00100000
+ .db %00100000
+ .db %11100000
+spr_icon00:
+ .db 9,7 ;unused .......:.......:
+ .db %10000000 ;█
+ .db %10111111 ;█ ███████
+ .db %10101010 ;█ █ █ █ █
+ .db %10110101 ;█ ██ █ ██
+ .db %10101010 ;█ █ █ █ █
+ .db %10111111 ;█ ███████
+ .db %10000000 ;█
+ .db 6
+ .db %00000000
+ .db %10000000
+ .db %10000000
+ .db %10000000
+ .db %10000000
+ .db %10000000
+maxarmor = 63 ;maximum HPs you can get
+spr_icon03:
+ .db 5,7 ;laser .......:.......:
+ .db %10000000 ;█ ▒
+ .db %10100000 ;█ █ ▒▒▒ ▒
+ .db %10100000 ;█ █ ▒▒▒ ▒
+ .db %10100000 ;█ █ ▒▒▒ ▒
+ .db %10100000 ;█ █ ▒▒▒ ▒
+ .db %10111000 ;█ ███ ▒▒▒ ▒
+ .db %10000000 ;█ ▒
+spr_icon04:
+ .db 5,7 ;bullets .......:.......:
+ .db %10000000 ;█ ▒
+ .db %10110000 ;█ ██ ▒▒▒ ▒
+ .db %10101000 ;█ █ █ ▒▒▒ ▒
+ .db %10110000 ;█ ██ ▒▒▒ ▒
+ .db %10101000 ;█ █ █ ▒▒▒ ▒
+ .db %10110000 ;█ ██ ▒▒▒ ▒
+ .db %10000000 ;█ ▒
+spr_icon05:
+ .db 7,7 ;multiple.......:.......:
+ .db %10000000 ;█ ▒
+ .db %10100010 ;█ █ █ ▒
+ .db %10110110 ;█ ██ ██ ▒
+ .db %10101010 ;█ █ █ █ ▒
+ .db %10100010 ;█ █ █ ▒
+ .db %10100010 ;█ █ █ ▒
+ .db %10000000 ;█ ▒
-your_pickup .db $00
-your_occ .db $00 ;0=normal 1..16=exploding
-your_inv .db $00 ;invincibility left
-your_armor .db $05 ;HP left
-your_lives .db $00 ;
+#endif
-your_weapon .db $00 ;laser avail: 0=no, 1=yes
-your_multiples .db $00 ;multiples present
-torp_occ .db $00 ;torp.state: 0=unavail 1=avail 2=presnt
-torp_pos .dw $0000 ;torpedo position (x,y)
+spr_dividerline:
+ .db 8,7
+ .db 128,128,128,128,128,128,128 ;128 = %10000000
-#include nemesis0.z80
+;---------------------------- texts ------------------------------------------
+
+#ifdef TI83
+txt_email: .db 127," www.shiar.org ",127,0 ;title screen
+_txt_email = $3A20
+txt_about: .db "v1.0.C21 ",127," by Shiar",0 ;right behind txt_email
+_txt_about = $3311
+#endif
+#ifdef TI86
+txt_email: .db "www.shiar.org ",127 ;title screen
+ .db " shiar0@hotmail.com",0
+_txt_email = $3A01 ;$3A1E=just email
+txt_about: .db "v1.0.C21 ",127," by Shiar",0 ;right behind txt_email
+_txt_about = $3321
+#endif
+
+txt_menu1: .db "NEW GAME",0
+txt_menu2: .db "CONTINUE",0
+
+txt_difhardcore:.db "Hardcore!",0
+txt_difnormal: .db "Normal",0
+txt_shpbeam: .db "Beam",0
+txt_shplaser: .db "Laser",0
+
+txt_level: .db "LEVEL ",0 ;new level screen
+txt_lives: .db "Lx0",0
+txt_savekey: .db "Press [F1] to save",0
+
+txt_gameover: .db "GAME OVER!",0 ;game over screen
+txt_score: .db "Score",0
+txt_hiscore: .db "Hiscore",0
-;----------------------------- logo -------------------------------------------
+txt_pause: .db " ",6,"/",7," ",$1C,"contrast; "
+ .db "F1",$1C,"B",$CF,5,"W Mode",0
+_txt_pause = $020B
+txt_pressenter: .db "Enter to continue",0 ;pause
+_txt_pressenter = $0201
+#ifdef teacherkey
+txt_teacher: .db "(2",Lpi,"*.98)/sin 13",0 ;teacher
+txt_teacherans: .db Lneg,"14.6549373495",0
+#endif
+
+;------------------------------ levels data ----------------------------------
+
+;format:boss: [moveType] [enemyType]
+; @level: [nr.dif.enemies]x [enemy nr]
+; [min. enemy frequency] [enemy frequency max.inc]
+; [next lvl (=nrenemies+4)] [level_info: 0000000 1:ground]
+; [tunnel size] [groundtype] [stars1] [stars2]
+;efrequency must be odd if halfluring!
+
+#ifdef story
+ .db 0 ;storyline ID
+levelstart: ;[y-pos] [x-pos] [text,0] [SFX lines; 0=more text] [-1=end]
+ .db 28,35,"COSMIC YEAR 6718",0,28-28+6
+ .db 10,8,"INTELLIGENCE REPORTS ",
+ .db "BACTERION",0,0
+ .db 17,7,"FORCES ARE BUILDING A ",
+ .db "NEW VESSEL",0,0
+ .db 33,32,"A POWERFUL VESSEL",0,0
+ .db 40,15,"THAT COULD EASILY DESTROY",
+ .db " US",0,0
+ .db 47,36,"ONCE COMPLETED",0,47-10+6
+
+ .db 22,1,"YOU HAVE TO GO INTO THE ",
+ .db "HEART OF THEIR",0,0
+ .db 28,1,"SPACE AND DESTROY THE VESSEL",
+ .db " BEFORE",0,0
+ .db 34,22,"IT BECOMES OPERATIONAL.",0,34-22+6
+ .db 25,56,"GOOD",0,0
+ .db 32,56,"LUCK",0,32-25+6
+ .db -1
+#endif
+ .db 40
+#ifndef story
+levelstart:
+#endif
+level00: ;intro
+ .db 5,3,5,3,2,2
+ .db 28,73,13
+ .db %0,0,1,1
+
+ .db 41
+level01:.db 2,3,5
+ .db 26,70,20
+ .db %0,0,1,1
+
+ .db 42
+level02:.db 3,3,4,5
+ .db 20,60,60
+ .db %0,0,1,1
+
+ .db 43
+level03:.db 4,4,5,6,7
+ .db 17,40,75
+ .db %0,0,1,1
+#ifdef story
+ .db 0
+ .db 25,2,"LONG-RANGE SCANNERS ARE ",
+ .db "SHOWING",0,0
+ .db 32,2,"LOTS OF ENEMY VESSELS ",
+ .db "APPROACHING",0,32-25+6
+ .db 22,9,"I'M CHANGING COURSE TO A",
+ .db " NEARBY",0,0
+ .db 28,4,"ASTEROID BELT AND TRY TO ",
+ .db "LOSE THEM",0,0
+ .db 34,48,"INTHERE...",0,34-22+6
+ .db -1
+#endif
+ .db 44
+level04: ;approaching asteroid belt
+ .db 5,8,8,9,11,12
+ .db 17,27,70
+ .db %0,0,1,1
+
+ .db 45
+level05: ;inside belt
+ .db 7,10,11,9,11,12,12,14
+ .db 12,24,80
+ .db %0,0,1,1
+
+ .db 46
+level06: ;(deep inside)
+ .db 10,10,11,12,12,14,13,13,14,15,15
+ .db 7,18,180
+ .db %0,0,1,1
+#ifdef story
+ .db 0
+ .db 28,6,"APPROACHING BACTERION ",
+ .db "TERRATORY",0,6
+ .db 25,10,"READING LOTS OF ENEMY ",
+ .db "VESSELS",0,0
+ .db 32,24,"ON AN INTERCEPT COURSE",0,32-25+6
+ .db -1
+#endif
+ .db 47
+level07:.db 4,16,17,18,6
+ .db 22,29,62
+ .db %0,0,1,1 ;-1=%11111111=line
+
+ .db 48
+level08:.db 5,16,17,18,19,19
+ .db 20,38,57
+ .db %0,0,1,1
+
+ .db 49
+level09: ;lot of triples
+ .db 3,19,20,21
+ .db 19,63,57
+ .db %0,0,1,1
+
+ .db 50
+level10: ;likely no pickups here (hard)
+ .db 7,22,23,24,24,24,25,26
+ .db 22,26,51
+ .db %0,0,1,1
+#ifdef story
+ .db 0
+ .db 24,18,"REACHED THEIR HOMEPLANET",0,0
+ .db 33,18,"SCANNING FOR THE VESSEL...",0,33-24+6
+ .db -1
+#endif
+ .db 50
+level11: ;planet level
+ .db 8,27,27,28,28,29,29,29,30
+ .db 6,8,108
+ .db %1,-7,-1,-1
+
+ .db 50
+level12: ;planet level 2
+ .db 4,39,30,31,31
+ .db 16,8,49
+ .db %1,-10,1,1
+#ifdef story
+ .db 0
+ .db 18,11,"ENEMY VESSEL STRAIGHT "
+ .db "AHEAD...",0,0
+ .db 25,16,"IT SEEMS TO BE "
+ .db "OPERATIONAL!!",0,0
+ .db 33,19,"WELL YOU'VE COME THIS "
+ .db "FAR;",0,0
+ .db 39,8,"TRY TO DESTROY IT, OR DIE "
+ .db "TRYING....",0,39-18+6
+ .db -1
+#endif
+ .db 51
+level13: ;endlevel
+ .db 1,26
+ .db 5,20,18
+ .db %0,0,1,1
+#ifdef story
+ .db 0
+ .db 1,1,"Thats all folks...",0,0
+ .db 20,50,"for now...",0,20-1+6
+ .db -1
+#endif
+endlevel = 13+1
+
+pickupfreq = 19
+
+;------------------------------ enemies --------------------------------------
+
+;format: [HP64] [000000:HP 00:occ] [sprite] [xpos] [appearance(ypos)]
+; [movetype] [time2fire] [firefreq] [firetype]
+;occ: %00=no enemy; 01=exploding (sprite=frame); 10=pickup; 11=enemy
+;appearances: 0+=ypos; -1=random; -2=lure; -3=halflure
+;movetypes: 0=1x; 1=updown; 2=0.25x; 3=0.5x; 4=0.75x; 5=1.25x; 6=1.5x;
+; 7=2x; 8=3x; 9=ylure50%; 10=ylure; 11=ylure50%; 12=x+y-lure 50%;
+; 13=-1/2x; 14=-1x; 16=boss; 17=right+1
+;firetypes: 1=normal; 2=down; 3=up; 4=1/2down; 5=1/2up; 6=aiming(2-5);
+; 7=triple; 8=double; 9=wide5; 10=wide7; 11=ran; 12=10+enemies
+; 13=base; 14=ranY; 15=wide3; 16=5x
+
+enemyspecs: ;10 bytes/enemy | max.enemies <64 | sprites use <768 bytes
+#ifdef TI86
+;0-1=pickups
+ .db 0,%00000010,spr_enemyP1&255,spr_enemyP1/256,128,-2,03, 0, 0,1 ;pickup
+ .db 0,%00000110,spr_enemyP2&255,spr_enemyP2/256,128,-2,03, 0, 0,1 ;bigpickup
+;2-7=basic enemies ,spr_enemy &255,spr_enemy /256, X, Y, d,WT,WF,W
+ .db 0,%00001011,spr_enemyE0&255,spr_enemyE0/256,128,-1,00,12, 0,1 ;intro
+ .db 0,%00100011,spr_enemyE1&255,spr_enemyE1/256,128,-1,00,10, 0,1 ;weak
+ .db 0,%01100011,spr_enemyE4&255,spr_enemyE4/256,128,-1,03, 6,50,1 ;slow
+ .db 0,%01001011,spr_enemyE2&255,spr_enemyE2/256,128,-1,00, 1, 0,1
+ .db 0,%01011011,spr_enemyE3&255,spr_enemyE3/256,128,-3,00,19,39,8 ;heavy
+ .db 0,%01010011,spr_enemyE5&255,spr_enemyE5/256,128,-3,05, 1, 0,1 ;fast
+;8-10=backwards enemies ,spr_enemy &255,spr_enemy /256, X, Y, d,WT,WF,W
+ .db 0,%00111011,spr_enemyB1&255,spr_enemyB1/256,000,-3,13,19,92,1
+ .db 0,%01011011,spr_enemyB2&255,spr_enemyB2/256,000,-1,14,11,45,1
+ .db 0,%01101011,spr_enemyB3&255,spr_enemyB3/256,000,-1,13,10,41,8 ;small
+;11-15=asteroid ,spr_enemy &255,spr_enemy /256, X, Y, d,WT,WF,W
+ .db 0,%01001011,spr_enemyA1&255,spr_enemyA1/256,128,-1,04, 0, 0,1
+ .db 0,%01111011,spr_enemyA2&255,spr_enemyA2/256,128,-1,00, 0, 0,1
+ .db 0,%10110011,spr_enemyA3&255,spr_enemyA3/256,128,-1,06, 0, 0,1
+ .db 1,%00010011,spr_enemyA4&255,spr_enemyA4/256,128,-1,03, 0, 0,1 ;slow+hard
+ .db 0,%01111011,spr_enemyA4&255,spr_enemyA4/256,128,-1,07, 0, 0,1
+;16-21=improved enemies ,spr_enemy &255,spr_enemy /256, X, Y, d,WT,WF,W
+ .db 0,%10010011,spr_enemyG1&255,spr_enemyG1/256,128,-3,00, 3,40,1
+ .db 0,%10111011,spr_enemyG2&255,spr_enemyG2/256,128,-3,00, 1,36,1
+ .db 0,%01100011,spr_enemyG5&255,spr_enemyG5/256,128,-1,01, 9,52,1 ;updown
+ .db 0,%11110011,spr_enemyG3&255,spr_enemyG3/256,128,-3,04, 7,99,15 ;3x
+ .db 1,%01101011,spr_enemyG4&255,spr_enemyG4/256,128,-2,01,17, 0,15 ;updown3x
+ .db 1,%00010011,spr_enemyG6&255,spr_enemyG6/256,128,-2,09,62,60,8 ;lure
+;22-26=hi-speed ,spr_enemy &255,spr_enemy /256, X, Y, d,WT,WF,W
+ .db 1,%00010011,spr_enemyS2&255,spr_enemyS2/256,128,-2,06, 3,32,8 ;fast
+ .db 0,%11111011,spr_enemyS1&255,spr_enemyS1/256,128,-3,09, 2,28,1 ;lure
+ .db 1,%00101011,spr_enemyS4&255,spr_enemyS4/256,128,-3,07, 0, 0,1 ;vfast+nofire
+ .db 1,%01110011,spr_enemyS3&255,spr_enemyS3/256,128,-1,09, 1,20,8 ;lure+
+ .db 0,%11011011,spr_enemyS2&255,spr_enemyS2/256,128,-2,01, 3,7,11 ;updown+ran
+;27-29=hyper ,% ,spr_enemy &255,spr_enemy /256, X, Y, d,WT,WF,W
+ .db 1,%00001011,spr_enemyN1&255,spr_enemyN1/256,128,-1,07, 0, 0,1
+ .db 1,%00010111,spr_enemyN2&255,spr_enemyN2/256,128,-2,07, 0, 0,1
+ .db 1,%00001111,spr_enemyN3&255,spr_enemyN3/256,128,-1,08, 0, 0,1 ;xfast
+;30-31=turrets,% ,spr_enemy &255,spr_enemy /256, X, Y, d,WT,WF,W
+ .db 1,%10001111,spr_enemyT1&255,spr_enemyT1/256,128,-4,00, 1,15,3 ;turret L
+ .db 1,%11011011,spr_enemyT1&255,spr_enemyT1/256,128,-4,00, 1,16,5 ;turret l
+
+ .db 0,%00000011,spr_enemy00&255,spr_enemy00/256,128, 0, 0, 0, 0,0
+ .db 0,%00000011,spr_enemy00&255,spr_enemy00/256,128, 0, 0, 0, 0,0
+ .db 0,%00000011,spr_enemy00&255,spr_enemy00/256,128, 0, 0, 0, 0,0
+ .db 0,%00000011,spr_enemy00&255,spr_enemy00/256,128, 0, 0, 0, 0,0
+ .db 0,%00000011,spr_enemy00&255,spr_enemy00/256,128, 0, 0, 0, 0,0
+;37-38=final boss' enemy,spr_enemy &255,spr_enemy /256, X, Y, d,WT,WF,W
+ .db 0,%11110011,spr_enemyM1&255,spr_enemyM1/256,128,-3,01, 0, 0,1 ;moving
+ .db 0,%11110011,spr_enemyM1&255,spr_enemyM1/256,128,23,11, 0, 0,1 ;mid+lure
+;39=misc ,% ,spr_enemy &255,spr_enemy /256, X, Y, d,WT,WF,W
+ .db -1,%11111111,spr_enemyM2&255,spr_enemyM2/256,128,-2,08, 0, 0,1 ;bullet
+boss1enemy = 37
+boss2enemy = 38
+;40-44=first bosses ,spr_ &255,spr_ /256, X, Y, d,WT,WF,W
+ .db 2,%01000111,spr_boss01&255,spr_boss01 /256,127,-1,11,35,48,15 ;triple
+ .db 2,%01010011,spr_boss02&255,spr_boss02 /256,127,-1,11,20,12,1 ;single
+ .db 2,%11011011,spr_boss03&255,spr_boss03 /256,127,-1,10,15, 8,8 ;double
+ .db 3,%00111111,spr_boss04&255,spr_boss04 /256,127,-3,12,10,11,1 ;Flure
+ .db 4,%01011011,spr_boss05&255,spr_boss05 /256,000,-2,17, 1,3,11 ;ranfire
+;45-46=asteroid bosses ,spr_ &255,spr_ /256, X, Y, , , ,
+ .db 5,%01101111,spr_bossA1&255,spr_bossA1 /256,127,-2,12,28,14,7 ;Flure
+ .db 20,%00011111,spr_bossA2&255,spr_bossA2 /256,119,00,16,31, 3,14 ;fullscreen
+;47-51=big bosses ,spr_ &255,spr_ /256, X, Y, , , ,
+ .db 4,%00010111,spr_boss07&255,spr_boss07 /256,127,-3,10,31, 8,16 ;5x
+ .db 6,%10001111,spr_boss08&255,spr_boss08 /256,127,-1,10,18, 8,9 ;quad
+ .db 3,%10111011,spr_boss06&255,spr_boss06 /256,127,-2,12, 1, 4,1 ;weak+rapidfire
+ .db 7,%11101011,spr_boss09&255,spr_boss09 /256,127,-1,10,21, 9,10 ;6x
+ .db 9,%11011011,spr_boss10&255,spr_boss10 /256,127,-1,10,12,11,12 ;enemies
+#else
+;0-1=pickups
+ .db 0,%00000010,spr_enemyP1&255,spr_enemyP1/256,96,-2,03, 0, 0,1 ;pickup
+ .db 0,%00000110,spr_enemyP2&255,spr_enemyP2/256,96,-2,03, 0, 0,1 ;bigpickup
+;2-7=basic enemies ,spr_enemy &255,spr_enemy /256, X, Y, d,WT,WF,W
+ .db 0,%00001011,spr_enemyE0&255,spr_enemyE0/256,96,-1,00,12, 0,1 ;intro
+ .db 0,%00100011,spr_enemyE1&255,spr_enemyE1/256,96,-1,00,10, 0,1 ;weak
+ .db 0,%01100011,spr_enemyE4&255,spr_enemyE4/256,96,-1,03, 6,50,1 ;slow
+ .db 0,%01001011,spr_enemyE2&255,spr_enemyE2/256,96,-1,00, 1, 0,1
+ .db 0,%01011011,spr_enemyE3&255,spr_enemyE3/256,96,-3,00,19,39,8 ;heavy
+ .db 0,%01010011,spr_enemyE5&255,spr_enemyE5/256,96,-3,05, 1, 0,1 ;fast
+;8-10=backwards enemies ,spr_enemy &255,spr_enemy /256, X, Y, d,WT,WF,W
+ .db 0,%00111011,spr_enemyB1&255,spr_enemyB1/256,00,-3,13,19,92,1
+ .db 0,%01011011,spr_enemyB2&255,spr_enemyB2/256,00,-1,14,11,45,1
+ .db 0,%01101011,spr_enemyB3&255,spr_enemyB3/256,00,-1,13,10,41,8 ;small
+;11-15=asteroid ,spr_enemy &255,spr_enemy /256, X, Y, d,WT,WF,W
+ .db 0,%01001011,spr_enemyA1&255,spr_enemyA1/256,96,-1,04, 0, 0,1
+ .db 0,%01111011,spr_enemyA2&255,spr_enemyA2/256,96,-1,00, 0, 0,1
+ .db 0,%10110011,spr_enemyA3&255,spr_enemyA3/256,96,-1,06, 0, 0,1
+ .db 1,%00010011,spr_enemyA4&255,spr_enemyA4/256,96,-1,03, 0, 0,1 ;slow+hard
+ .db 0,%01111011,spr_enemyA4&255,spr_enemyA4/256,96,-1,07, 0, 0,1
+;16-21=improved enemies ,spr_enemy &255,spr_enemy /256, X, Y, d,WT,WF,W
+ .db 0,%10010011,spr_enemyG1&255,spr_enemyG1/256,96,-3,00, 3,40,1
+ .db 0,%10111011,spr_enemyG2&255,spr_enemyG2/256,96,-3,00, 1,36,1
+ .db 0,%01100011,spr_enemyG5&255,spr_enemyG5/256,96,-1,01, 9,52,1 ;updown
+ .db 0,%11110011,spr_enemyG3&255,spr_enemyG3/256,96,-3,04, 7,99,15 ;3x
+ .db 1,%01101011,spr_enemyG4&255,spr_enemyG4/256,96,-2,01,17, 0,15 ;updown3x
+ .db 1,%00010011,spr_enemyG6&255,spr_enemyG6/256,96,-2,09,62,60,8 ;lure
+;22-26=hi-speed ,spr_enemy &255,spr_enemy /256, X, Y, d,WT,WF,W
+ .db 1,%00010011,spr_enemyS2&255,spr_enemyS2/256,96,-2,06, 3,32,8 ;fast
+ .db 0,%11111011,spr_enemyS1&255,spr_enemyS1/256,96,-3,09, 2,28,1 ;lure
+ .db 1,%00101011,spr_enemyS4&255,spr_enemyS4/256,96,-3,07, 0, 0,1 ;vfast+nofire
+ .db 1,%01110011,spr_enemyS3&255,spr_enemyS3/256,96,-1,09, 1,20,8 ;lure+
+ .db 0,%11011011,spr_enemyS2&255,spr_enemyS2/256,96,-2,01, 3,7,11 ;updown+ran
+;27-29=hyper ,% ,spr_enemy &255,spr_enemy /256, X, Y, d,WT,WF,W
+ .db 1,%00001011,spr_enemyN1&255,spr_enemyN1/256,96,-1,07, 0, 0,1
+ .db 1,%00010111,spr_enemyN2&255,spr_enemyN2/256,96,-2,07, 0, 0,1
+ .db 1,%00001111,spr_enemyN3&255,spr_enemyN3/256,96,-1,08, 0, 0,1 ;xfast
+;30-31=turrets,% ,spr_enemy &255,spr_enemy /256, X, Y, d,WT,WF,W
+ .db 1,%10001111,spr_enemyT1&255,spr_enemyT1/256,96,-4,00, 1,15,3 ;turret L
+ .db 1,%11011011,spr_enemyT1&255,spr_enemyT1/256,96,-4,00, 1,16,5 ;turret l
+
+ .db 0,%00000011,spr_enemy00&255,spr_enemy00/256,96, 0, 0, 0, 0,0
+ .db 0,%00000011,spr_enemy00&255,spr_enemy00/256,96, 0, 0, 0, 0,0
+ .db 0,%00000011,spr_enemy00&255,spr_enemy00/256,96, 0, 0, 0, 0,0
+ .db 0,%00000011,spr_enemy00&255,spr_enemy00/256,96, 0, 0, 0, 0,0
+ .db 0,%00000011,spr_enemy00&255,spr_enemy00/256,96, 0, 0, 0, 0,0
+;37-38=final boss' enemy,spr_enemy &255,spr_enemy /256, X, Y, d,WT,WF,W
+ .db 0,%11110011,spr_enemyM1&255,spr_enemyM1/256,96,-3,01, 0, 0,1 ;moving
+ .db 0,%11110011,spr_enemyM1&255,spr_enemyM1/256,96,23,11, 0, 0,1 ;mid+lure
+;39=misc ,% ,spr_enemy &255,spr_enemy /256, X, Y, d,WT,WF,W
+ .db -1,%11111111,spr_enemyM2&255,spr_enemyM2/256,96,-2,08, 0, 0,1 ;bullet
+boss1enemy = 37
+boss2enemy = 38
+;40-44=first bosses ,spr_ &255,spr_ /256, X, Y, d,WT,WF,W
+ .db 2,%01000111,spr_boss01&255,spr_boss01 /256,95,-1,11,35,48,15 ;triple
+ .db 2,%01010011,spr_boss02&255,spr_boss02 /256,95,-1,11,20,12,1 ;single
+ .db 2,%11011011,spr_boss03&255,spr_boss03 /256,95,-1,10,15, 8,8 ;double
+ .db 3,%00111111,spr_boss04&255,spr_boss04 /256,95,-3,12,10,11,1 ;Flure
+ .db 4,%01011011,spr_boss05&255,spr_boss05 /256,00,-2,17, 1,3,11 ;ranfire
+;45-46=asteroid bosses ,spr_ &255,spr_ /256, X, Y, , , ,
+ .db 5,%01101111,spr_bossA1&255,spr_bossA1 /256,95,-2,12,28,14,7 ;Flure
+ .db 20,%00011111,spr_bossA2&255,spr_bossA2 /256,87,00,16,31, 3,14 ;fullscreen
+;47-51=big bosses ,spr_ &255,spr_ /256, X, Y, , , ,
+ .db 4,%00010111,spr_boss07&255,spr_boss07 /256,95,-3,10,31, 8,16 ;5x
+ .db 6,%10001111,spr_boss08&255,spr_boss08 /256,95,-1,10,18, 8,9 ;quad
+ .db 3,%10111011,spr_boss06&255,spr_boss06 /256,95,-2,12, 1, 4,1 ;weak+rapidfire
+ .db 7,%11101011,spr_boss09&255,spr_boss09 /256,95,-1,10,21, 9,10 ;6x
+ .db 9,%11011011,spr_boss10&255,spr_boss10 /256,95,-1,10,12,11,12 ;enemies
+#endif
+
+spr_enemy00:
+spr_enemyP1:
+ .db 10,8 ;pickup
+ .db %00111111 ; ██████
+ .db %01100001 ; ██ ██
+ .db %10001100 ;█ ██ █
+ .db %10111111 ;█ ██████ █
+ .db %10111111 ;█ ██████ █
+ .db %10001100 ;█ ██ █
+ .db %01100001 ; ██ ██
+ .db %00111111 ; ██████
+ .db 7
+ .db %00000000
+ .db %10000000
+ .db %01000000
+ .db %01000000
+ .db %01000000
+ .db %01000000
+ .db %10000000
+spr_enemyP2:
+ .db 11,9 ;big pickup
+ .db %00111111 ; ███████
+ .db %01100000 ; ██ ██
+ .db %10001110 ;█ ███ █
+ .db %10111011 ;█ ███ ███ █
+ .db %10100000 ;█ █ █ █
+ .db %10111011 ;█ ███ ███ █
+ .db %10001110 ;█ ███ █
+ .db %01100000 ; ██ ██
+ .db %00111111 ; ███████
+ .db 9
+ .db %10000000
+ .db %11000000
+ .db %00100000
+ .db %10100000
+ .db %10100000
+ .db %10100000
+ .db %00100000
+ .db %11000000
+ .db %10000000
+
+spr_enemyE0:
+ .db 6,7 ;weak
+ .db %00011100 ; ███
+ .db %00100100 ; █ █
+ .db %01101000 ; ██ █
+ .db %10110100 ;█ ██ █
+ .db %01101000 ; ██ █
+ .db %00100100 ; █ █
+ .db %00011100 ; ███
+spr_enemyE1:
+ .db 6,7 ;weak
+ .db %00111100 ; ████
+ .db %01000100 ; █ █
+ .db %10111000 ;█ ███
+ .db %11100000 ;███
+ .db %10111000 ;█ ███
+ .db %01000100 ; █ █
+ .db %00111100 ; ████
+spr_enemyE2:
+ .db 6,6 ;weak
+ .db %00111100 ; ████
+ .db %01010000 ; █ █
+ .db %10100000 ;█ █
+ .db %10100000 ;█ █
+ .db %01010000 ; █ █
+ .db %00111100 ; ████
+spr_enemyE3:
+ .db 6,6 ;normal solid (Galaxian enemy)
+ .db %00111100 ; ████
+ .db %01010000 ; █ █
+ .db %11010000 ;██ █
+ .db %11010000 ;██ █
+ .db %01010000 ; █ █
+ .db %00111100 ; ████
+spr_enemyE4:
+ .db 6,7
+ .db %00011100 ; ███
+ .db %01101000 ; ██ █
+ .db %10011000 ;█ ██
+ .db %01110000 ; ███
+ .db %10011000 ;█ ██
+ .db %01101000 ; ██ █
+ .db %00011100 ; ███
+spr_enemyE5:
+ .db 6,6 ;speedy
+ .db %00010100 ; █ █
+ .db %01111000 ; ████
+ .db %10100000 ;█ █
+ .db %10100000 ;█ █
+ .db %01111000 ; ████
+ .db %00010100 ; █ █
+
+spr_enemyB1:
+ .db 6,6 ;solid backwards
+ .db %11110000 ;████
+ .db %00101000 ; █ █
+ .db %01010100 ; █ █ █
+ .db %01010100 ; █ █ █
+ .db %00101000 ; █ █
+ .db %11110000 ;████
+spr_enemyB2:
+ .db 6,7
+ .db %11110000 ;████
+ .db %01001000 ; █ █
+ .db %01110100 ; ███ █
+ .db %00100100 ; █ █
+ .db %01110100 ; ███ █
+ .db %01001000 ; █ █
+ .db %11110000 ;████
+spr_enemyB3:
+ .db 5,7
+ .db %11100000 ;███
+ .db %01010000 ; █ █
+ .db %01111000 ; ████
+ .db %01000000 ; █
+ .db %01111000 ; ████
+ .db %01010000 ; █ █
+ .db %11100000 ;███
+
+spr_enemyA1:
+ .db 7,6 ;asteroid one
+ .db %00011000 ; ██
+ .db %01101100 ; ██ ██
+ .db %10011110 ;█ ████
+ .db %11111010 ;█████ █
+ .db %10111100 ;█ ████
+ .db %01110000 ; ███
+spr_enemyA2:
+ .db 8,7 ;asteroid two
+ .db %00111100 ; ████
+ .db %01011010 ; █ ██ █
+ .db %01101101 ; ██ ██ █
+ .db %11111101 ;██████ █
+ .db %11111111 ;████████
+ .db %10110110 ;█ ██ ██
+ .db %01100000 ; ██
+spr_enemyA3:
+ .db 8,8 ;asteroid three
+ .db %00011110 ; ████
+ .db %01110011 ; ███ ██
+ .db %01111101 ; █████ █
+ .db %10110111 ;█ ██ ███
+ .db %11111110 ;███████
+ .db %11111101 ;██████ █
+ .db %01010111 ; █ █ ███
+ .db %00001110 ; ███
+spr_enemyA4:
+ .db 7,6 ;asteroid four
+ .db %01111000 ; ████
+ .db %10110110 ;█ ██ ██
+ .db %11111101 ;██████ █
+ .db %01111011 ; ████ ██
+ .db %01001110 ; █ ███
+ .db %00110000 ; ██
+
+spr_enemyG1:
+ .db 8,6 ;G-Type
+ .db %00011111 ; █████
+ .db %01001000 ; █ █
+ .db %10110100 ;█ ██ █
+ .db %10110100 ;█ ██ █
+ .db %01001000 ; █ █
+ .db %00011111 ; █████
+spr_enemyG2:
+ .db 8,6 ;smaller nacelles
+ .db %00010111 ; █ ███
+ .db %01101100 ; ██ ██
+ .db %10110100 ;█ ██ █
+ .db %10110100 ;█ ██ █
+ .db %01101100 ; ██ ██
+ .db %00010111 ; █ ███
+spr_enemyG3:
+ .db 8,6 ;shuttle
+ .db %00001111 ; ████
+ .db %01110100 ; ███ █
+ .db %10011100 ;█ ███
+ .db %10011100 ;█ ███
+ .db %01110100 ; ███ █
+ .db %00001111 ; ████
+spr_enemyG4:
+ .db 8,6 ;G-Type solid
+ .db %00111101 ; ███ █
+ .db %01111000 ; ████
+ .db %11110100 ;████ █
+ .db %11110100 ;████ █
+ .db %01111000 ; ████
+ .db %00111101 ; ███ █
+spr_enemyG5:
+ .db 6,6
+ .db %01111100 ; █████
+ .db %10110000 ;█ ██
+ .db %10101000 ;█ █ █
+ .db %10101000 ;█ █ █
+ .db %10110000 ;█ ██
+ .db %01111100 ; █████
+spr_enemyG6:
+ .db 8,5 ;shuttle
+ .db %00001111 ; ████
+ .db %01110100 ; ███ █
+ .db %10011010 ;█ ██ █
+ .db %01110100 ; ███ █
+ .db %00001111 ; ████
+
+spr_enemyS1:
+ .db 6,6 ;solid
+ .db %00111000 ; ███
+ .db %01111100 ; █████
+ .db %11111000 ; █████
+ .db %11111000 ; █████
+ .db %01111100 ; █████
+ .db %00111000 ; ███
+spr_enemyS2:
+ .db 7,6 ;some attack vessel
+ .db %00011100 ; ███
+ .db %01110010 ; ███ █
+ .db %10101100 ; █ █ ██
+ .db %10101100 ; █ █ ██
+ .db %01110010 ; ███ █
+ .db %00011100 ; ███
+spr_enemyS3:
+ .db 7,6 ;interceptor
+ .db %00011110 ; ████
+ .db %01111110 ; ██████
+ .db %11111100 ; ██████
+ .db %11111100 ; ██████
+ .db %01111110 ; ██████
+ .db %00011110 ; ████
+spr_enemyS4:
+ .db 8,6 ;fast interceptor
+ .db %00011011 ; ██ ██
+ .db %01110110 ; ███ ██
+ .db %10111100 ; █ ████
+ .db %10111100 ; █ ████
+ .db %01110110 ; ███ ██
+ .db %00011011 ; ██ ██
+
+spr_enemyN1:
+ .db 8,7 ;some cool Nemesis-MSX enemy
+ .db %00111110 ; █████
+ .db %11110001 ;████ █
+ .db %00001110 ; ███
+ .db %00010101 ; █ █ █
+ .db %00001110 ; ███
+ .db %11110001 ;████ █
+ .db %00111110 ; █████
+spr_enemyN2:
+ .db 8,7 ;
+ .db %00111110 ; █████
+ .db %00011101 ; ███ █
+ .db %11111111 ;████ ███
+ .db %01110110 ; ██ ███
+ .db %11111111 ;████ ███
+ .db %00011101 ; ███ █
+ .db %00111110 ; █████
+spr_enemyN3:
+ .db 8,7 ;Nem3MSX jumper lvl#3
+ .db %10111110 ;█ █████
+ .db %01011101 ; █ ███ █
+ .db %01111110 ; ██████
+ .db %00010100 ; █ █
+ .db %01111110 ; ██████
+ .db %01011101 ; █ ███ █
+ .db %10111110 ;█ █████
+spr_enemyN4:
+ .db 8,8 ;Stolen from XC1701II
+ .db %01111110 ; ██████
+ .db %11110101 ;████ █ █
+ .db %00011111 ; █████
+ .db %00111101 ; ████ █
+ .db %00111001 ; ███ █
+ .db %00011111 ; █████
+ .db %11110101 ;████ █ █
+ .db %01111110 ; ██████
+spr_enemyN5:
+ .db 7,8 ;Stolen from XC1701II
+ .db %00111100 ; ████
+ .db %01010010 ; █ █ █
+ .db %11111110 ;███████
+ .db %01001010 ; █ █ █
+ .db %01011010 ; █ ██ █
+ .db %11111110 ;███████
+ .db %01010010 ; █ █ █
+ .db %01111100 ; ████
+
+spr_enemyT1:
+ .db 8,7 ;turret left
+ .db %11000000 ;██
+ .db %01100000 ; ██
+ .db %00110000 ; ██
+ .db %01011100 ; █ ███
+ .db %10110110 ;█ ██ ██
+ .db %01011010 ; █ ██ █
+ .db %11111111 ;████████
+spr_enemyT2:
+ .db 8,7 ;turret right
+ .db %00000011 ; ██
+ .db %00000110 ; ██
+ .db %00001100 ; ██
+ .db %00111010 ; ███ █
+ .db %01101101 ; ██ ██ █
+ .db %01011010 ; █ ██ █
+ .db %11111111 ;████████
+
+spr_enemyM1:
+ .db 8,7 ;mine
+ .db %00111100 ; ████
+ .db %01011010 ; █ ██ █
+ .db %11111111 ;████████
+ .db %01001010 ; █ █ █
+ .db %11111111 ;████████
+ .db %01011010 ; █ ██ █
+ .db %00111100 ; ████
+spr_enemyM2:
+ .db 7,6 ;giant bullet
+ .db %00011000 ; ██▒
+ .db %01111110 ; ██████▒
+ .db %11111000 ;█████▒
+ .db %11111100 ;██████▒
+ .db %01111110 ; ██████▒
+ .db %00111000 ; ███▒
+
+spr_boss01:
+ .db 9,12 ;.......:.2.....:
+ .db %00000111 ; ████
+ .db %00011100 ; ███
+ .db %00101010 ; █ █ █
+ .db %01011011 ; █ ██ ██
+ .db %10100110 ;█ █ ██ █
+ .db %11010101 ;██ █ █ █
+ .db %11010101 ;██ █ █ █
+ .db %10100110 ;█ █ ██ █
+ .db %01011011 ; █ ██ ██
+ .db %00101010 ; █ █ █
+ .db %00011100 ; ███
+ .db %00000111 ; ████
+ .db 12
+ .db %10000000
+ .db %00000000
+ .db %00000000
+ .db %00000000
+ .db %10000000
+ .db %00000000 ;...what a waste of space...
+ .db %00000000
+ .db %10000000
+ .db %00000000
+ .db %00000000
+ .db %00000000
+ .db %10000000
+spr_boss02:
+ .db 12,12 ;.......:....5..:
+ .db %00011110 ; ████
+ .db %01100001 ; ██ ██
+ .db %10110010 ;█ ██ █ ██
+ .db %00000101 ; █ ██ █
+ .db %00001010 ; █ █ ██
+ .db %00011010 ; ██ █ █ █
+ .db %00011010 ; ██ █ █ █
+ .db %00001010 ; █ █ ██
+ .db %00000101 ; █ ██ █
+ .db %10110010 ;█ ██ █ ██
+ .db %01100001 ; ██ ██
+ .db %00011110 ; ████
+ .db 11
+ .db %00000000
+ .db %10000000
+ .db %01100000
+ .db %10100000
+ .db %01100000
+ .db %10010000
+ .db %10010000
+ .db %01100000
+ .db %10100000
+ .db %01100000
+ .db %10000000
+spr_boss03:
+ .db 16,10 ;.......:.......:
+ .db %00000001 ; ██████ ██
+ .db %00001110 ; ███ █ ███
+ .db %00110010 ; ██ █ ████
+ .db %01001101 ; █ ██ ██
+ .db %11101011 ;███ █ ██ █
+ .db %11101011 ;███ █ ██ █
+ .db %01001101 ; █ ██ ██
+ .db %00110010 ; ██ █ ████
+ .db %00001110 ; ███ █ ███
+ .db %00000001 ; ██████ ██
+ .db 10
+ .db %11111011
+ .db %00101110
+ .db %11110000
+ .db %10000000
+ .db %01000000
+ .db %01000000
+ .db %10000000
+ .db %11110000
+ .db %00101110
+ .db %11111011
+spr_boss04:
+ .db 16,10 ;.......:.......:
+ .db %00000000 ; █████
+ .db %00000000 ; ███ █
+ .db %00000111 ; ████ █████
+ .db %00111101 ; ████ █ █ ████
+ .db %01001010 ; █ █ █ ██ ███ █
+ .db %10110110 ;█ ██ ██ ███ █ █
+ .db %10110110 ;█ ██ ██ ███ █ █
+ .db %01001010 ; █ █ █ ██ ███ █
+ .db %00111101 ; ████ █ █ ████
+ .db %00000111 ; ████ █████
+ .db 12 ; ███ █
+ .db %00011111 ; █████
+ .db %11100001
+ .db %10111110
+ .db %01011110
+ .db %11011101
+ .db %11100101
+ .db %11100101
+ .db %11011101
+ .db %01011110
+ .db %10111110
+ .db %11100001
+ .db %00011111
+spr_boss05:
+ .db 16,10 ;.......:.......:
+ .db %11111110 ;███████
+ .db %00000011 ; ███ ████
+ .db %00110101 ; ██ █ ████ █
+ .db %01111010 ; ████ █ █ █ ██
+ .db %10001101 ;█ ██ █ ██ ██ █
+ .db %10001101 ;█ ██ █ ██ ██ █
+ .db %01111010 ; ████ █ █ █ ██
+ .db %00110101 ; ██ █ ████ █
+ .db %00000011 ; ███ ████
+ .db %11111110 ;███████
+ .db 9
+ .db %00000000
+ .db %10001111
+ .db %11100001
+ .db %10010110
+ .db %01101101
+ .db %01101101
+ .db %10010110
+ .db %11100001
+ .db %10001111
+spr_bossA1:
+ .db 12,11 ;AsteroidBoss one
+ .db %00011110 ; ████
+ .db %01110011 ; ███ ███
+ .db %01111111 ; ███████ █
+ .db %01111111 ; █████████
+ .db %11111110 ;███████ ███
+ .db %11111111 ;███████████
+ .db %11111111 ;████████████
+ .db %10111110 ;█ █████ ████
+ .db %01011111 ; █ ███████
+ .db %00110111 ; ██ ███
+ .db %00001110 ; ███
+ .db 9
+ .db %00000000
+ .db %10000000
+ .db %01000000
+ .db %11000000
+ .db %11100000
+ .db %11100000
+ .db %11110000
+ .db %11110000
+ .db %11000000
+spr_boss06:
+ .db 16,10 ;.......:.......:
+ .db %10111110 ;█ █████ ███
+ .db %00000011 ; ███ ████
+ .db %01110101 ; ███ █ ████ ██ █
+ .db %11111101 ;██████ █ ███ █
+ .db %00000110 ; ██ █ █ ██ █
+ .db %00000110 ; ██ █ █ ██ █
+ .db %11111101 ;██████ █ ███ █
+ .db %01110101 ; ███ █ ████ ██ █
+ .db %00000011 ; ███ ████
+ .db %10111110 ;█ █████ ███
+ .db 10
+ .db %00111000
+ .db %10001111
+ .db %11101101
+ .db %01110010
+ .db %10101101
+ .db %10101101
+ .db %01110010
+ .db %11101101
+ .db %10001111
+ .db %00111000
+spr_boss07: ;modelled after a Nemesis][MSX boss
+ .db 16,15 ;.......:.......:
+ .db %00001111 ; █████
+ .db %00111110 ; █████ █████
+ .db %01111101 ; █████ █ ███████
+ .db %00000011 ; ██
+ .db %00000100 ; █ █
+ .db %00000011 ; █████
+ .db %00011110 ; ████ ██ ████
+ .db %11110011 ;████ ██ █ █
+ .db %00011110 ; ████ ██ ████
+ .db %00000011 ; █████
+ .db %00000100 ; █ █
+ .db %00000011 ; ██
+ .db %01111101 ; █████ █ ███████
+ .db %00111110 ; █████ █████
+ .db %00001111 ; █████
+ .db 15
+ .db %10000000
+ .db %11111000
+ .db %01111111
+ .db %00000000
+ .db %10000000
+ .db %11100000
+ .db %11011110
+ .db %01010000
+ .db %11011110
+ .db %11100000
+ .db %10000000
+ .db %00000000
+ .db %01111111
+ .db %11111000
+ .db %10000000
+spr_boss08: ;modelled after a Nemesis][MSX boss
+ .db 16,18 ;.......:.......:
+ .db %00000000 ; █ █
+ .db %00000111 ; ███ ███
+ .db %00000011 ; ████ █
+ .db %00000001 ; ██ ██
+ .db %00000011 ; ███ ██
+ .db %00000000 ; █████
+ .db %00010111 ; █ ██████████
+ .db %00111111 ; ██████ ██ ██
+ .db %11111000 ;█████ ██ █ ███
+ .db %00001111 ; █████ ██ █ █
+ .db %11111000 ;█████ ██ █ ███
+ .db %00111111 ; ██████ ██ ██
+ .db %00010111 ; █ ██████████
+ .db %00000000 ; █████
+ .db %00000011 ; ███ ██
+ .db %00000001 ; ██ ██
+ .db %00000011 ; ████ █
+ .db %00000111 ; ███ ███
+ .db 19 ; █ █
+ .db %01010000
+ .db %01110000
+ .db %11010000
+ .db %10110000
+ .db %10110000
+ .db %11111000
+ .db %11111110
+ .db %01101100
+ .db %11010111
+ .db %10110101
+ .db %11010111
+ .db %01101100
+ .db %11111110
+ .db %11111000
+ .db %10110000
+ .db %10110000
+ .db %11010000
+ .db %01110000
+ .db %01010000
+spr_boss09:
+ .db 14,14 ;.......:......7:
+ .db %01100111 ; ██ ████ ██
+ .db %11001011 ;██ █ ██ █ ██
+ .db %10110000 ;█ ██ ██ █
+ .db %10101111 ;█ █ ██████ █ █
+ .db %01010000 ; █ ██ ██ █
+ .db %01010011 ; █ █ ██ █ █
+ .db %10100111 ;█ █ ████ ██ █
+ .db %10100111 ;█ █ ████ ██ █
+ .db %01010011 ; █ █ ██ █ █
+ .db %01010000 ; █ ██ ██ █
+ .db %10101111 ;█ █ ██████ █ █
+ .db %10110000 ;█ ██ ██ █
+ .db %11001001 ;██ █ ██ █ ██
+ .db %01100111 ; ██ ████ ██
+ .db 14
+ .db %10011000
+ .db %01001100
+ .db %00110100
+ .db %11010100
+ .db %00101000
+ .db %00010100
+ .db %10110100
+ .db %10110100
+ .db %00010100
+ .db %00101000
+ .db %11010100
+ .db %00110100
+ .db %01001100
+ .db %10011000
+spr_boss10:
+ .db 16,19 ;.......:.......:
+ .db %01111011 ; ████ ███
+ .db %10000110 ;█ ██ █████
+ .db %00000011 ; ███ █
+ .db %00111011 ; ███ ██ ███
+ .db %00000111 ; ███ ███
+ .db %00001100 ; ██ ███ █
+ .db %00110111 ; ██ █████ █ ██
+ .db %01111011 ; ████ ██ █ ██ █
+ .db %11100100 ;███ █ ██ ██ █
+ .db %00000001 ; ██████ ██ █
+ .db %11100100 ;███ █ ██ ██ █
+ .db %01111011 ; ████ ██ █ ██ █
+ .db %00110111 ; ██ █████ █ ██
+ .db %00001100 ; ██ ███ █
+ .db %00000111 ; ███ ██
+ .db %00111011 ; ███ ██ ███
+ .db %00000011 ; ███ █
+ .db %10000110 ;█ ██ █████
+ .db %01111011 ; ████ ███
+ .db 19
+ .db %10000000
+ .db %11111000
+ .db %10100000
+ .db %00011100
+ .db %01110000
+ .db %11101000
+ .db %11010110
+ .db %00101101
+ .db %11011001
+ .db %11011001
+ .db %11011001
+ .db %00101101
+ .db %11010110
+ .db %11101000
+ .db %01100000
+ .db %00011100
+ .db %10100000
+ .db %11111000
+ .db %10000000
+;spr_bossA2: ;in asm code
+
+;-----------------------------------------------------------------------------
+;----------------------------- logo ------------------------------------------
+;-----------------------------------------------------------------------------
logo_nemesis:
-.db %11111111,%11111111,%11111111,%11111110,%11111111,%11110111,%11111111,%11111110,%11111111,%111101111,%11111111,%00001011,%11111111,%11111111,%11111111,%11111000
-.db %01111111,%11111111,%11111111,%11111110,%11111111,%11110111,%11111111,%11111110,%11111111,%111101111,%11111111,%00011011,%11111111,%11111111,%11111111,%11110000
-.db %00111111,%11111111,%11111111,%11111110,%11111111,%11110111,%11111111,%11111110,%11111111,%111101111,%11111111,%00111011,%11111111,%11111111,%11111111,%11100000
-.db %00011111,%11111111,%11111111,%11111110,%11111111,%11110111,%11111111,%11111110,%11111111,%111101111,%11111111,%01111011,%11111111,%11111111,%11111111,%11000000
+#ifdef TI83
+.db %11111111,%11111111,%11111111,%11111110,%11111111,%11110111,%11111111,%11111110,%11111111,%111101111,%11111111,%00001011
+.db %01111111,%11111111,%11111111,%11111110,%11111111,%11110111,%11111111,%11111110,%11111111,%111101111,%11111111,%00011011
+.db %00111111,%11111111,%11111111,%11111110,%11111111,%11110111,%11111111,%11111110,%11111111,%111101111,%11111111,%00111011
+.db %00011111,%11111111,%11111111,%11111110,%11111111,%11110111,%11111111,%11111110,%11111111,%111101111,%11111111,%01111011
+.db %00000000,%00000000,%00000001,%00011110,%00010000,%00000000,%10000001,%00011110,%00010000,%000000001,%00000000,%00001000
+.db %00000000,%00000000,%00000011,%00011110,%00110000,%00000001,%10000011,%00011110,%00110000,%000000011,%00000000,%00011000
+.db %00000000,%00000000,%00000111,%00011110,%01110000,%00000011,%10000111,%00011110,%01110000,%000000111,%00000000,%00111001
+.db %00000000,%00000000,%00001111,%00011110,%11111111,%00000111,%10001111,%00011110,%11111111,%000001111,%11111111,%01111011
+.db %00000000,%00000000,%00001111,%00011110,%11111111,%00000111,%10001111,%00011110,%11111111,%000001111,%11111111,%01111011
+.db %00000000,%00000000,%00001111,%00011110,%11111111,%00000111,%10001111,%00011110,%11111111,%000001111,%11111111,%01111011
+.db %00000000,%00000000,%00001111,%00011110,%11111111,%00000111,%10001111,%00011110,%11111111,%000001111,%11111111,%01111011
+.db %00000000,%00000000,%00001111,%00011110,%11110000,%00000111,%10001111,%00011110,%11110000,%000000000,%00001111,%01111000
+.db %00000000,%00000000,%00001111,%00011110,%11110000,%00000111,%10001111,%00011110,%11110000,%000000000,%00001111,%01111000
+.db %00000000,%00000000,%00001111,%00011110,%11110000,%00000111,%10001111,%00011110,%11110000,%000000000,%00001111,%01111000
+.db %00000000,%00000000,%00001111,%00011110,%11110000,%00000111,%10001111,%00011110,%11110000,%000000000,%00001111,%01111000
+.db %00000000,%00000000,%00001111,%00011110,%11111111,%11110111,%10001111,%00011110,%11111111,%111101111,%11111111,%01111011
+.db %00000000,%00000000,%00001111,%00011110,%11111111,%11110111,%10001111,%00011110,%11111111,%111101111,%11111111,%01111011
+.db %00000000,%00000000,%00001111,%00011110,%11111111,%11110111,%10001111,%00011110,%11111111,%111101111,%11111111,%01111011
+.db %00000000,%00000000,%00001111,%00011110,%11111111,%11110111,%10001111,%00011110,%11111111,%111101111,%11111111,%01111011
+#endif
+#ifdef TI86
+.db %11111111,%11111111,%11111111,%11111110,%11111111,%11110111,%11111111,%11111110,%11111111,%111101111,%11111111,%00001011,%11111111,%11111111,%11111111,%11111110
+.db %01111111,%11111111,%11111111,%11111110,%11111111,%11110111,%11111111,%11111110,%11111111,%111101111,%11111111,%00011011,%11111111,%11111111,%11111111,%11111100
+.db %00111111,%11111111,%11111111,%11111110,%11111111,%11110111,%11111111,%11111110,%11111111,%111101111,%11111111,%00111011,%11111111,%11111111,%11111111,%11111000
+.db %00011111,%11111111,%11111111,%11111110,%11111111,%11110111,%11111111,%11111110,%11111111,%111101111,%11111111,%01111011,%11111111,%11111111,%11111111,%11110000
.db %00000000,%00000000,%00000001,%00011110,%00010000,%00000000,%10000001,%00011110,%00010000,%000000001,%00000000,%00001000,%01000000,%00000000,%00000000,%00000000
.db %00000000,%00000000,%00000011,%00011110,%00110000,%00000001,%10000011,%00011110,%00110000,%000000011,%00000000,%00011000,%11000000,%00000000,%00000000,%00000000
.db %00000000,%00000000,%00000111,%00011110,%01110000,%00000011,%10000111,%00011110,%01110000,%000000111,%00000000,%00111001,%11000000,%00000000,%00000000,%00000000
.db %00000000,%00000000,%00001111,%00011110,%11111111,%11110111,%10001111,%00011110,%11111111,%111101111,%11111111,%01111011,%11111111,%11000000,%00000001,%00011011
.db %00000000,%00000000,%00001111,%00011110,%11111111,%11110111,%10001111,%00011110,%11111111,%111101111,%11111111,%01111011,%11111111,%11000000,%00000001,%00010101
.db %00000000,%00000000,%00001111,%00011110,%11111111,%11110111,%10001111,%00011110,%11111111,%111101111,%11111111,%01111011,%11111111,%11000000,%00000001,%00010001
+#endif
-;----------------------------- end --------------------------------------------
+;----------------------------- end -------------------------------------------
.end
.end
-;------------------------------------------------------------------------------
+;-----------------------------------------------------------------------------
+;-----------------------------------------------------------------------------
+;-----------------------------------------------------------------------------
-; 0.94.A08 -- 08.X.99 -- size 4531 (4456)
-;
-; + starfield background scrolling left (2 layers (front and back))
-; * enemies aim their bullets towards you: 5 different directions!
-; # removed some unintended <add a,a> instructions
-; * gamefield is now white on black instead of normal black on white!
-; + enemies can also move slowly, fast, very fast, or 1st fast then slow
-; # you can't fire when you're exploding
-; + GROUND scrolling at bottom. You die if you hit the ground (!!!)
-; (unlike the ground in version 0.925test there are NO bugs)
-; + ceiling scrolling at top, just like the ground
-; * ground and ceiling profile are different each level
-; * ground and/or ceiling can be non-present (speeding up cause skipped)
-; # no more BIG crash if enemies fire too much bullets ( >10)
-; + frequency of enemies firing bullets differs per level
-; * stars scroll at alternate speeds, different than any ship/pick (3/4)
-; + special effect displaying titlescreen (stole from Spaze Invaders'83)
-; * enemies can fire either directly on entering the level, or not
-; + "tunnel" (playfield) can narrow/grow at random (depending on level)
-; * minimum size of "tunnel" can be different per level
-; + menu at startup. select "NEW GAME" and "LOAD GAME" with up/down
-; - nemesis doesn't use the SpazeInvaders effect anymore (took too long)
-; + choosing new game will display a demo first (text will be displayed
-; with special effect [SI] saying the storyline will come soon)
-; * levels altered to be more challenging and different (seven levels)
-; # the usual bugs that come with new features removed (i think?)
-; * you get 5 shield-points at start and after death
-;
-; 0.95.A13 -- 13.X.99 -- size 4656
-;
-; + BOSSES! at the end of a level a huge enemy will appear
-; * bosses will move towards you, slowly. level=done when boss destroyed
-; + normal enemies can also try to ram your ship (like bosses do)
-; * when colliding with an enemy, his armor will decrease (if any)
-;
-; 0.95.A17 -- 17.X.99 -- size 4965
-;
-; # fix: bullets at right side weren't removed on time (1pix too late)
-; * each level has it's own boss
-; + your bullets can have different speeds/directions
-; + third icon selects bullet-upgrade: single, faster, double, triple
-; * number of bullets varies per bullet-class (type 1 is max. 2 bullets)
-; * all temp. vars are stored in TEXT_MEM and TEXT_MEM2 (anti-crash:)
-;
-; 0.95.A18 -- 18.X.99 -- size 5052
+; 0.99.99 -- 9.IX.00 -- size 6936
;
-; # vertical line next to score at game over screen removed (minor)
-; # some unintended pixels at icon bar now gone (joy, joy)
-; # number of bullets of a new weapon is loaded correctly
-; # cleans GRAPH_MEM (Graph-screen) and TEXT_MEM (calculate screen)!
-; # data not stored at TEXT_MEM2 but now at _asm_exec_ram+5100
+; + you can have upto FOUR multiples! (~20 pixels apart)
+; * some optimizations: keycall, menu handling, port nops removed,
+; more SMC, fire handling, fast bullet handling, enemy movement
+; * better "backwards" enemies handling (and implemented in game)
+; # when enemy changed into a pickup, movement is set to vslow
+; * instead of turning into a pickup, enemies explode and a pickup
+; appears at the right side of the screen (moves left slowly)
+; # bullets do damage again (screenflash made damage become 0)
+; + when destroyed by bullets, the armor bar will show 0HP left
+; * all enemy bullets do the same damage in all levels
+; * you now appear at (*32*,30) because enemies can come from left
+; * improved bullet handling (faster, smaller, etc.)
+; + multiples are animated like real Nemesis (grow-shrink-grow-shrink>)
+; # fixed a bug that didn't select multiples when you were moving
+; # enemy collision screwed up invert and some other weird stuff
+; + in pause screen change contrast with up/down and B/W mode with F1
+; + lasers can have different durations (beams last longer)
+; * some sign-flag checkings replaced by carry-flag (thus reducing size)
+; # slow enemies (including pickups) didn't always appear (just 25-50%)
+; + enemies can fire different kinds of bullets: aiming, double, triple
+; * maximum number of bullets increased (48 for enemies, 128 for you)
+; * beamweapon can be selected when you got laser (like vice versa)
+; * selecting laser removes tailbeam or up-double
+; # tail beam/up-double correctly centered
+; # disappearing bullets (when enemies fired multiple bullets) fixed
+; + bullets and lasers both upgradable upto level 9
+; # fixed end story (_vputs didn't recognize 0-end when "'" in string)
+; # stars couldn't be altered anymore since recent levelformat changes
+; * maximum different enemies increased from 28 to 63
+; * pickup sprite altered, small changes to some enemies
+; + new moves implemented: 75% speed and lure-while-moving
+; # fixed the enemy aiming bullets procedure
+; * enemies fire their bullets centered too! (even the large bosses)
+; * you may NOT have any multiples together with beams, just lasers
+; + added new enemy guns: quad- and 6x-fire!!
+; * sprite table length increased to 768 bytes (stored DIV3)
+; + ships 3/4 select hardcore mode: score and damage are doubled
+; + first icon not only increases armor, but also activates shield for
+; some time (shield halves damage and absorbs bullets in normal mode)
+; + ship selection screen also shows ship specs (hardcore/tailbeam/etc)
+; * shield looks different for each ship
+; * hiscore/savegame procedure optimized (several bytes smaller)
+; + B<>W mode setting will be stored
+; * enemy sprite pointers stored as words (thus increasing sprite table
+; length from 768B to 65kB, and increasing sprite calculation speed)
+; * hardcore mode does _more_ than doubled damage (bulletsdamage +1)
+; * 10 bytes off by optimizing main menu a little
+; * and optimizations to hiscore name handling saved another 17 bytes!
+; * score increased by 1 per placed enemy, instead of time (otherwise
+; you could just evade bosses for a long time for very high score)
+; * findpixel optimized (or rather un-unoptimized: restored to original)
+; # ground fixed again (and optimized for tunnel only)
+; # prevents exploding more than once (not dieing while inside ground)
+; * some unneccessary pushes removed
+; + final boss also fires moving mines (just up/down-enemies)
+; * on collision less damage to enemy, more to you (bosses too simple)
+; * normal pickups will increase armor and shield directly (no [alpha])
+; + a large pickup'll appear at the end of a level which will select
+; your next upgrade: beamweapon, laser, multiple/tailbeam/up-double
+; + a small explosion is displayed when enemy's hit but not destroyed
+; # _all_ multiples appear at your position at start of level
+; # bug in selecting multiples fixed (recent bug)
+; + getting passed 3rd upgrade (4 pickups) increases score by 250!
+; - second icon integrated in 5th, first two icons removed (unused now)
+; * the armor bar is now 5 pixels in height; very visible
+; # if selecting upgrade or starting level, charge bar wasn't displayed
;
-; 0.95.A22 -- 22.X.99 -- size 5321
+; 1.00.C21 -- 21.XII.00 -- size 6797
;
-; * total size of enemy-sprites can now be 510 bytes (space = doubled!)
-; # bullets hit enemies correctly that aren't 6x6; even the 16x10 bosses!
-; * at g/o or nextlevel checks for keys released instead of waiting abit
-; + name stored with hiscore (max. 8 chars, Shiar.95 by default)
-; + when entering hi-name DEL goes back one char (with check 4 no chars)
-; # program is reloaded at start so some score-bugs solved! (_asapvar=0)
-; * at death, upgrades and pickups AREN'T removed! (just armor=0)
-; # bullet is not displayed after being removed anymore
-; # armor-icon stays hilighted when armor is decreased
-; * when stars move off screen, they are placed at a NEW y-pos!
-; * the starting x-positions of stars are not random, so the stars are
-; spread all over screen. y is still random and changes during game
-; * make_random functions smaller and used by different procs
-; # MAJOR BUG! a "random" value was placed somewhere in mem thus
-; creating bugs like unexplained loss of armor and stuff!
+; * armor-bar background, empty upgrades sprites changed
+; + shows sprite when laser hits an enemy (his "shield"?)
+; + exit-key also quits out of ship selection screen
+; # fixed direct-quit on death bug (bug since recent optimization)
+; * armor-bar background changed (more elegant and smaller code)
+; # "flash" when end-boss spawns mine fixed
+; + enemy's y start position can be specified per enemy
+; + when bullets selected, upgrade icons won't appear half the time
+; # remainder pixels in armor bar (appeared after heavy damage) removed
+; + your ship's explosion is now also 8 frames (half enemy expl. speed)
+; + does NOT display Done after running in TI-OS! (anti-teacher ;)
+; * storyline completed (probably the crappiest story ever!)
+; # only first byte of ship's sprite altered; now loads whole word
+; - tail beam removed (up double only); odd ships now contain laser
+; # fixed laserbeam display when firing at right edge
+; # star relocation altered to work correctly w/ new screen location
+; # halfluring wasn't 50% (more like 75%) since random enemy spawning
+; * restored multiples for bullets (since it's unlikely you'll select 1)
+; # fixed mem overlapping causing "weird stuff" when moving multiples
+; # bullets fired below screen bottom are moved up onto screen
+; + SOURCE ALSO TI-83 COMPATIBLE (still few bugs like hiscore, bullets)
+; # upgrading beam weapon removed multiples
+; # clipping at left side wrong in TI-83 version fixed
;
;
; + added - removed * changed # bug fixed
+;bullet handling: (255/enemy)+419+putsprite cycles per bullet
\ No newline at end of file
git.shiar.nl / nemesis.git / blobdiff