game.c

   1 /*
   2  * Netris -- A free networked version of T*tris
   3  * Copyright (C) 1994,1995,1996  Mark H. Weaver <mhw@netris.org>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  *
  19  * $Id: game.c,v 1.39 1999/05/16 06:56:27 mhw Exp $
  20  */
  21
  22 #define NOEXT
  23 #include "netris.h"
  24 #include <stdlib.h>
  25 #include <ctype.h>
  26 #include <string.h>
  27 #include <sys/types.h>
  28 #include <netinet/in.h>
  29
  30 enum { KT_left, KT_right, KT_rotright, KT_rotleft, KT_drop, KT_down,
  31         KT_toggleSpy, KT_pause, KT_faster, KT_redraw, KT_numKeys };
  32
  33 static char *keyNames[KT_numKeys+1] = {
  34         "Left", "Right", "RotRight", "RotLeft", "Drop", "Down",
  35         "ToggleSpy", "Pause", "Faster", "Redraw", NULL };
  36
  37 static char *gameNames[GT_len] = { "OnePlayer", "ClassicTwo" };
  38
  39 static char keyTable[KT_numKeys+1];
  40 static int dropModeEnable = 0;
  41 static char *robotProg;
  42
  43 ExtFunc void MapKeys(char *newKeys)
  44 {
  45         int i, k, ch;
  46         char used[256];
  47         int errs = 0;
  48
  49         /* XXX assumptions about ASCII encoding here */
  50         for (i = k = 0; newKeys[i] && k < KT_numKeys; i++,k++) {
  51                 if (newKeys[i] == '^' && newKeys[i+1])
  52                         keyTable[k] = toupper(newKeys[++i]) - ('A' - 1);
  53                 else
  54                         keyTable[k] = newKeys[i];
  55         }
  56         memset(used, 0, sizeof(used));
  57         for (k = 0; k < KT_numKeys; k++) {
  58                 ch = (unsigned char) keyTable[k];
  59                 if (used[ch]) {
  60                         if (iscntrl(ch) && ch < ' ')
  61                                 sprintf(scratch, "Ctrl-%c", ch + ('A' - 1));
  62                         else if (isprint(ch))
  63                                 sprintf(scratch, "\"%c\"", ch);
  64                         else
  65                                 sprintf(scratch, "0x%X", ch);
  66                         if (!errs)
  67                                 fprintf(stderr, "Duplicate key mappings:\n");
  68                         errs++;
  69                         fprintf(stderr, "  %s mapped to both %s and %s\n",
  70                                         scratch, keyNames[used[ch]-1], keyNames[k]);
  71                 }
  72                 used[ch] = k + 1;
  73         }
  74         if (errs)
  75                 exit(1);
  76 }
  77
  78 ExtFunc int StartNewPiece(int scr, Shape *shape)
  79 {
  80         if (nextShape[scr]) {
  81                 curShape[scr] = nextShape[scr];
  82                 nextShape[scr] = shape;
  83         }
  84         else
  85                 curShape[scr] = shape;
  86         curY[scr] = boardVisible[scr] + 4;
  87         curX[scr] = boardWidth[scr] / 2;
  88         while (!ShapeVisible(curShape[scr], scr, curY[scr], curX[scr]))
  89                 --curY[scr];
  90         if (!ShapeFits(curShape[scr], scr, curY[scr], curX[scr]))
  91                 return 0;
  92         PlotShape(curShape[scr], scr, curY[scr], curX[scr], 1);
  93         return 1;
  94 }
  95
  96 ExtFunc void OneGame(int scr, int scr2)
  97 {
  98         MyEvent event;
  99         int linesCleared, changed = 0;
 100         int totalDrops = 0, totalLines = 0, totalAdds = 0;
 101         int spied = 0, spying = 0, dropMode = 0;
 102         int oldPaused = 0, paused = 0, pausedByMe = 0, pausedByThem = 0;
 103         long pauseTimeLeft;
 104         int pieceCount = 0;
 105         int key;
 106         char *p, *cmd;
 107
 108         speed = stepDownInterval;
 109         ResetBaseTime();
 110         InitBoard(scr);
 111         if (scr2 >= 0) {
 112                 spied = 1;
 113                 spying = 1;
 114                 InitBoard(scr2);
 115                 UpdateOpponentDisplay();
 116         }
 117         ShowDisplayInfo();
 118         SetITimer(speed, speed);
 119         if (robotEnable) {
 120                 RobotCmd(0, "GameType %s\n", gameNames[game]);
 121                 RobotCmd(0, "BoardSize 0 %d %d\n",
 122                                 boardVisible[scr], boardWidth[scr]);
 123                 if (scr2 >= 0) {
 124                         RobotCmd(0, "BoardSize 1 %d %d\n",
 125                                         boardVisible[scr2], boardWidth[scr2]);
 126                         RobotCmd(0, "Opponent 1 %s %s\n", opponentName, opponentHost);
 127                         if (opponentFlags & SCF_usingRobot)
 128                                 RobotCmd(0, "OpponentFlag 1 robot\n");
 129                         if (opponentFlags & SCF_fairRobot)
 130                                 RobotCmd(0, "OpponentFlag 1 fairRobot\n");
 131                 }
 132                 RobotCmd(0, "TickLength %.3f\n", speed / 1.0e6);
 133                 RobotCmd(0, "BeginGame\n");
 134                 RobotTimeStamp();
 135         }
 136         nextShape[scr] = ChooseOption(stdOptions);
 137         while (StartNewPiece(scr, ChooseOption(stdOptions))) {
 138                 ShowScore(scr, totalDrops, totalLines, totalAdds);
 139                 if (robotEnable && !fairRobot)
 140                         RobotCmd(1, "NewPiece %d\n", ++pieceCount);
 141                 if (spied) {
 142                         short shapeNum;
 143                         netint2 data[1];
 144
 145                         shapeNum = ShapeToNetNum(curShape[scr]);
 146                         data[0] = hton2(shapeNum);
 147                         SendPacket(scr, NP_newPiece, sizeof(data), data);
 148                 }
 149                 for (;;) {
 150                         changed = RefreshBoard(scr) || changed;
 151                         if (spying)
 152                                 changed = RefreshBoard(scr2) || changed;
 153                         if (changed) {
 154                                 RefreshScreen();
 155                                 changed = 0;
 156                         }
 157                         CheckNetConn();
 158                         switch (WaitMyEvent(&event, EM_any)) {
 159                                 case E_alarm:
 160                                         if (!MovePiece(scr, -1, 0))
 161                                                 goto nextPiece;
 162                                         else if (spied)
 163                                                 SendPacket(scr, NP_down, 0, NULL);
 164                                         break;
 165                                 case E_key:
 166                                         p = strchr(keyTable, tolower(event.u.key));
 167                                         key = p - keyTable;
 168                                         if (robotEnable) {
 169                                                 RobotCmd(1, "UserKey %d %s\n",
 170                                                                 (int)(unsigned char)event.u.key,
 171                                                                 p ? keyNames[key] : "?");
 172                                                 break;
 173                                         }
 174                                         if (!p)
 175                                                 break;
 176                                 keyEvent:
 177                                         if (paused && (key != KT_pause) && (key != KT_redraw))
 178                                                 break;
 179                                         switch(key) {
 180                                                 case KT_left:
 181                                                         if (MovePiece(scr, 0, -1) && spied)
 182                                                                 SendPacket(scr, NP_left, 0, NULL);
 183                                                         break;
 184                                                 case KT_right:
 185                                                         if (MovePiece(scr, 0, 1) && spied)
 186                                                                 SendPacket(scr, NP_right, 0, NULL);
 187                                                         break;
 188                                                 case KT_rotleft:
 189                                                         if (RotatePiece(scr, 0) && spied)
 190                                                                 SendPacket(scr, NP_rotleft, 0, NULL);
 191                                                         break;
 192                                                 case KT_rotright:
 193                                                         if (RotatePiece(scr, 1) && spied)
 194                                                                 SendPacket(scr, NP_rotright, 0, NULL);
 195                                                         break;
 196                                                 case KT_down:
 197                                                         if (MovePiece(scr, -1, 0) && spied)
 198                                                                 SendPacket(scr, NP_down, 0, NULL);
 199                                                         SetITimer(speed, speed);
 200                                                         break;
 201                                                 case KT_toggleSpy:
 202                                                         spying = (!spying) && (scr2 >= 0);
 203                                                         break;
 204                                                 case KT_drop:
 205                                                         if (DropPiece(scr) > 0) {
 206                                                                 if (spied)
 207                                                                         SendPacket(scr, NP_drop, 0, NULL);
 208                                                                 if (dropModeEnable == 2)
 209                                                                         SetITimer(speed, 1); //instantdrop
 210                                                                 else
 211                                                                         SetITimer(speed, speed);
 212                                                         }
 213                                                         dropMode = dropModeEnable;
 214                                                         break;
 215                                                 case KT_pause:
 216                                                         pausedByMe = !pausedByMe;
 217                                                         if (game == GT_classicTwo) {
 218                                                                 netint2 data[1];
 219
 220                                                                 data[0] = hton2(pausedByMe);
 221                                                                 SendPacket(scr, NP_pause, sizeof(data), data);
 222                                                         }
 223                                                         paused = pausedByMe || pausedByThem;
 224                                                         if (robotEnable)
 225                                                                 RobotCmd(1, "Pause %d %d\n", pausedByMe,
 226                                                                         pausedByThem);
 227                                                         ShowPause(pausedByMe, pausedByThem);
 228                                                         changed = 1;
 229                                                         break;
 230                                                 case KT_faster:
 231                                                         if (game != GT_onePlayer)
 232                                                                 break;
 233                                                         speed = speed * 0.8;
 234                                                         SetITimer(speed, SetITimer(0, 0));
 235                                                         ShowDisplayInfo();
 236                                                         changed = 1;
 237                                                         break;
 238                                                 case KT_redraw:
 239                                                         ScheduleFullRedraw();
 240                                                         if (paused)
 241                                                                 RefreshScreen();
 242                                                         break;
 243                                         }
 244                                         if (dropMode && DropPiece(scr) > 0) {
 245                                                 if (spied)
 246                                                         SendPacket(scr, NP_drop, 0, NULL);
 247                                                 SetITimer(speed, speed);
 248                                         }
 249                                         break;
 250                                 case E_robot:
 251                                 {
 252                                         int num;
 253
 254                                         cmd = event.u.robot.data;
 255                                         if ((p = strchr(cmd, ' ')))
 256                                                 *p++ = 0;
 257                                         else
 258                                                 p = cmd + strlen(cmd);
 259                                         for (key = 0; keyNames[key]; ++key)
 260                                                 if (!strcmp(keyNames[key], cmd) &&
 261                                                                 (fairRobot || (1 == sscanf(p, "%d", &num) &&
 262                                                                         num == pieceCount)))
 263                                                         goto keyEvent;
 264                                         if (!strcmp(cmd, "Message")) {
 265                                                 Message(p);
 266                                                 changed = 1;
 267                                         }
 268                                         break;
 269                                 }
 270                                 case E_net:
 271                                         switch(event.u.net.type) {
 272                                                 case NP_giveJunk:
 273                                                 {
 274                                                         netint2 data[2];
 275                                                         short column;
 276
 277                                                         memcpy(data, event.u.net.data, sizeof(data[0]));
 278                                                         column = Random(0, boardWidth[scr]);
 279                                                         data[1] = hton2(column);
 280                                                         InsertJunk(scr, ntoh2(data[0]), column);
 281                                                         if (spied)
 282                                                                 SendPacket(scr, NP_insertJunk, sizeof(data), data);
 283 //                                                      Message("Opponent added %d lines");
 284                                                         break;
 285                                                 }
 286                                                 case NP_newPiece:
 287                                                 {
 288                                                         short shapeNum;
 289                                                         netint2 data[1];
 290
 291                                                         FreezePiece(scr2);
 292                                                         memcpy(data, event.u.net.data, sizeof(data));
 293                                                         shapeNum = ntoh2(data[0]);
 294                                                         StartNewPiece(scr2, NetNumToShape(shapeNum));
 295                                                         break;
 296                                                 }
 297                                                 case NP_down:
 298                                                         MovePiece(scr2, -1, 0);
 299                                                         break;
 300                                                 case NP_left:
 301                                                         MovePiece(scr2, 0, -1);
 302                                                         break;
 303                                                 case NP_right:
 304                                                         MovePiece(scr2, 0, 1);
 305                                                         break;
 306                                                 case NP_rotleft:
 307                                                         RotatePiece(scr2, 0);
 308                                                         break;
 309                                                 case NP_rotright:
 310                                                         RotatePiece(scr2, 1);
 311                                                         break;
 312                                                 case NP_drop:
 313                                                         DropPiece(scr2);
 314                                                         break;
 315                                                 case NP_clear:
 316                                                         ClearFullLines(scr2);
 317                                                         break;
 318                                                 case NP_insertJunk:
 319                                                 {
 320                                                         netint2 data[2];
 321
 322                                                         memcpy(data, event.u.net.data, sizeof(data));
 323                                                         InsertJunk(scr2, ntoh2(data[0]), ntoh2(data[1]));
 324                                                         break;
 325                                                 }
 326                                                 case NP_pause:
 327                                                 {
 328                                                         netint2 data[1];
 329
 330                                                         memcpy(data, event.u.net.data, sizeof(data));
 331                                                         pausedByThem = ntoh2(data[0]);
 332                                                         paused = pausedByMe || pausedByThem;
 333                                                         if (robotEnable)
 334                                                                 RobotCmd(1, "Pause %d %d\n", pausedByMe,
 335                                                                         pausedByThem);
 336                                                         ShowPause(pausedByMe, pausedByThem);
 337                                                         changed = 1;
 338                                                         break;
 339                                                 }
 340                                                 default:
 341                                                         break;
 342                                         }
 343                                         break;
 344                                 case E_lostRobot:
 345                                 case E_lostConn:
 346                                         goto gameOver;
 347                                 default:
 348                                         break;
 349                         }
 350                         if (paused != oldPaused) {
 351                                 if (paused)
 352                                         pauseTimeLeft = SetITimer(0, 0);
 353                                 else
 354                                         SetITimer(speed, pauseTimeLeft);
 355                                 oldPaused = paused;
 356                         }
 357                 }
 358         nextPiece:
 359                 dropMode = 0;
 360                 FreezePiece(scr);
 361                 totalDrops++;
 362                 if ((linesCleared = ClearFullLines(scr)) > 0) {
 363                         totalLines += linesCleared;
 364                         totalAdds += linesCleared - (linesCleared < 4);
 365                 }
 366                 if (linesCleared > 0 && spied)
 367                         SendPacket(scr, NP_clear, 0, NULL);
 368                 if (game == GT_classicTwo && linesCleared > 1) {
 369                         short junkLines;
 370                         netint2 data[1];
 371
 372                         junkLines = linesCleared - (linesCleared < 4);
 373                         data[0] = hton2(junkLines);
 374                         SendPacket(scr, NP_giveJunk, sizeof(data), data);
 375                 }
 376         }
 377 gameOver:
 378         SetITimer(0, 0);
 379 }
 380
 381 ExtFunc int main(int argc, char **argv)
 382 {
 383         int initConn = 0, waitConn = 0, ch;
 384         char *hostStr = NULL, *portStr = NULL;
 385
 386         standoutEnable = colorEnable = 1;
 387         stepDownInterval = DEFAULT_INTERVAL;
 388         MapKeys(DEFAULT_KEYS);
 389         while ((ch = getopt(argc, argv, "hHRs:r:Fk:c:wodDSCp:i:")) != -1)
 390                 switch (ch) {
 391                         case 'c':
 392                                 initConn = 1;
 393                                 hostStr = optarg;
 394                                 break;
 395                         case 'w':
 396                                 waitConn = 1;
 397                                 break;
 398                         case 'p':
 399                                 portStr = optarg;
 400                                 break;
 401                         case 'i':
 402                                 stepDownInterval = atof(optarg) * 1e6;
 403                                 break;
 404                         case 's':
 405                                 initSeed = atoi(optarg);
 406                                 myFlags |= SCF_setSeed;
 407                                 break;
 408                         case 'r':
 409                                 robotEnable = 1;
 410                                 robotProg = optarg;
 411                                 myFlags |= SCF_usingRobot;
 412                                 break;
 413                         case 'F':
 414                                 fairRobot = 1;
 415                                 myFlags |= SCF_fairRobot;
 416                                 break;
 417                         case 'd':
 418                                 dropModeEnable = 1;
 419                                 break;
 420                         case 'D':
 421                                 dropModeEnable = 2;
 422                                 break;
 423                         case 'C':
 424                                 colorEnable = 0;
 425                                 break;
 426                         case 'S':
 427                                 standoutEnable = 0;
 428                                 break;
 429                         case 'k':
 430                                 MapKeys(optarg);
 431                                 break;
 432                         case 'H':
 433                                 DistInfo();
 434                                 exit(0);
 435                         case 'R':
 436                                 Rules();
 437                                 exit(0);
 438                         case 'h':
 439                                 Usage();
 440                                 exit(0);
 441                         default:
 442                                 Usage();
 443                                 exit(1);
 444                 }
 445         if (optind < argc || (initConn && waitConn)) {
 446                 Usage();
 447                 exit(1);
 448         }
 449         if (fairRobot && !robotEnable)
 450                 fatal("You can't use the -F option without the -r option");
 451         InitUtil();
 452         if (robotEnable)
 453                 InitRobot(robotProg);
 454         InitNet();
 455         InitScreens();
 456         if (initConn || waitConn) {
 457                 MyEvent event;
 458
 459                 game = GT_classicTwo;
 460                 if (initConn)
 461                         InitiateConnection(hostStr, portStr);
 462                 else if (waitConn)
 463                         WaitForConnection(portStr);
 464                 {
 465                         netint4 data[2];
 466                         int major;
 467
 468                         data[0] = hton4(MAJOR_VERSION);
 469                         data[1] = hton4(PROTOCOL_VERSION);
 470                         SendPacket(0, NP_version, sizeof(data), data);
 471                         if (WaitMyEvent(&event, EM_net) != E_net)
 472                                 fatal("Network negotiation failed");
 473                         memcpy(data, event.u.net.data, sizeof(data));
 474                         major = ntoh4(data[0]);
 475                         protocolVersion = ntoh4(data[1]);
 476                         if (event.u.net.type != NP_version || major < MAJOR_VERSION)
 477                                 fatal("Your opponent is using an old, incompatible version\n"
 478                                         "of Netris.  They should get the latest version.");
 479                         if (major > MAJOR_VERSION)
 480                                 fatal("Your opponent is using an newer, incompatible version\n"
 481                                         "of Netris.  Get the latest version.");
 482                         if (protocolVersion > PROTOCOL_VERSION)
 483                                 protocolVersion = PROTOCOL_VERSION;
 484                 }
 485                 if (protocolVersion < 3 && stepDownInterval != DEFAULT_INTERVAL)
 486                         fatal("Your opponent's version of Netris predates the -i option.\n"
 487                                         "For fairness, you shouldn't use the -i option either.");
 488                 {
 489                         netint4 data[3];
 490                         int len;
 491                         int seed;
 492
 493                         if (protocolVersion >= 3)
 494                                 len = sizeof(data);
 495                         else
 496                                 len = sizeof(netint4[2]);
 497                         if ((myFlags & SCF_setSeed))
 498                                 seed = initSeed;
 499                         else
 500                                 seed = time(0);
 501                         if (waitConn)
 502                                 SRandom(seed);
 503                         data[0] = hton4(myFlags);
 504                         data[1] = hton4(seed);
 505                         data[2] = hton4(stepDownInterval);
 506                         SendPacket(0, NP_startConn, len, data);
 507                         if (WaitMyEvent(&event, EM_net) != E_net ||
 508                                         event.u.net.type != NP_startConn)
 509                                 fatal("Network negotiation failed");
 510                         memcpy(data, event.u.net.data, len);
 511                         opponentFlags = ntoh4(data[0]);
 512                         seed = ntoh4(data[1]);
 513                         if (initConn) {
 514                                 if ((opponentFlags & SCF_setSeed) != (myFlags & SCF_setSeed))
 515                                         fatal("If one player sets the random number seed, "
 516                                                         "both must.");
 517                                 if ((myFlags & SCF_setSeed) && seed != initSeed)
 518                                         fatal("Both players have set the random number seed, "
 519                                                         "and they are unequal.");
 520                                 if (protocolVersion >= 3 && stepDownInterval != ntoh4(data[2]))
 521                                         fatal("Your opponent is using a different step-down "
 522                                                 "interval (-i).\nYou must both use the same one.");
 523                                 SRandom(seed);
 524                         }
 525                 }
 526                 {
 527                         char *userName;
 528                         int len, i;
 529
 530                         userName = getenv("LOGNAME");
 531                         if (!userName || !userName[0])
 532                                 userName = getenv("USER");
 533                         if (!userName || !userName[0])
 534                                 strcpy(userName, "???");
 535                         len = strlen(userName)+1;
 536                         if (len > sizeof(opponentName))
 537                                 len = sizeof(opponentName);
 538                         SendPacket(0, NP_userName, len, userName);
 539                         if (WaitMyEvent(&event, EM_net) != E_net ||
 540                                         event.u.net.type != NP_userName)
 541                                 fatal("Network negotiation failed");
 542                         strncpy(opponentName, event.u.net.data,
 543                                 sizeof(opponentName)-1);
 544                         opponentName[sizeof(opponentName)-1] = 0;
 545                         for (i = 0; opponentName[i]; ++i)
 546                                 if (!isprint(opponentName[i]))
 547                                         opponentName[i] = '?';
 548                         for (i = 0; opponentHost[i]; ++i)
 549                                 if (!isprint(opponentHost[i]))
 550                                         opponentHost[i] = '?';
 551                 }
 552                 OneGame(0, 1);
 553         }
 554         else {
 555                 game = GT_onePlayer;
 556                 OneGame(0, -1);
 557         }
 558         return 0;
 559 }
 560
 561 /*
 562  * vi: ts=4 ai
 563  * vim: noai si
 564  */