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_rotate, KT_right, KT_drop, KT_down,
  31         KT_toggleSpy, KT_pause, KT_faster, KT_redraw, KT_new, KT_numKeys };
  32
  33 static char *keyNames[KT_numKeys+1] = {
  34         "Left", "Rotate", "Right", "Drop", "Down", "ToggleSpy", "Pause",
  35         "Faster", "Redraw", "New", 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 static int wonLast = 0;
  44 int lost = 0, won = 0;
  45 enum States gameState = STATE_STARTING;
  46
  47 ExtFunc void MapKeys(char *newKeys)
  48 {
  49         int i, k, ch;
  50         char used[256];
  51         int errs = 0;
  52
  53         /* XXX assumptions about ASCII encoding here */
  54         for (i = k = 0; newKeys[i] && k < KT_numKeys; i++,k++) {
  55                 if (newKeys[i] == '^' && newKeys[i+1])
  56                         keyTable[k] = toupper(newKeys[++i]) - ('A' - 1);
  57                 else
  58                         keyTable[k] = newKeys[i];
  59         }
  60         memset(used, 0, sizeof(used));
  61         for (k = 0; k < KT_numKeys; k++) {
  62                 ch = (unsigned char) keyTable[k];
  63                 if (used[ch]) {
  64                         if (iscntrl(ch) && ch < ' ')
  65                                 sprintf(scratch, "Ctrl-%c", ch + ('A' - 1));
  66                         else if (isprint(ch))
  67                                 sprintf(scratch, "\"%c\"", ch);
  68                         else
  69                                 sprintf(scratch, "0x%X", ch);
  70                         if (!errs)
  71                                 fprintf(stderr, "Duplicate key mappings:\n");
  72                         errs++;
  73                         fprintf(stderr, "  %s mapped to both %s and %s\n",
  74                                         scratch, keyNames[used[ch]-1], keyNames[k]);
  75                 }
  76                 used[ch] = k + 1;
  77         }
  78         if (errs)
  79                 exit(1);
  80 }
  81
  82 ExtFunc int StartNewPiece(int scr, Shape *shape)
  83 {
  84         curShape[scr] = shape;
  85         curY[scr] = boardVisible[scr] + 4;
  86         curX[scr] = boardWidth[scr] / 2;
  87         while (!ShapeVisible(shape, scr, curY[scr], curX[scr]))
  88                 --curY[scr];
  89         if (!ShapeFits(shape, scr, curY[scr], curX[scr]))
  90                 return 0;
  91         PlotShape(shape, scr, curY[scr], curX[scr], 1);
  92         return 1;
  93 }
  94
  95 ExtFunc void OneGame(int scr, int scr2)
  96 {
  97         MyEvent event;
  98         int linesCleared, changed = 0;
  99         int spied = 0, spying = 0, dropMode = 0;
 100         int oldPaused = 0, paused = 0, pausedByMe = 0, pausedByThem = 0;
 101         long pauseTimeLeft;
 102         int pieceCount = 0;
 103         int key;
 104         char *p, *cmd;
 105
 106         speed = stepDownInterval;
 107         ResetBaseTime();
 108         InitBoard(scr);
 109         if (scr2 >= 0) {
 110                 spied = 1;
 111                 spying = 1;
 112                 InitBoard(scr2);
 113                 UpdateOpponentDisplay();
 114         }
 115         ShowDisplayInfo();
 116         SetITimer(speed, speed);
 117         if (robotEnable) {
 118                 RobotCmd(0, "GameType %s\n", gameNames[game]);
 119                 RobotCmd(0, "BoardSize 0 %d %d\n",
 120                                 boardVisible[scr], boardWidth[scr]);
 121                 if (scr2 >= 0) {
 122                         RobotCmd(0, "BoardSize 1 %d %d\n",
 123                                         boardVisible[scr2], boardWidth[scr2]);
 124                         RobotCmd(0, "Opponent 1 %s %s\n", opponentName, opponentHost);
 125                         if (opponentFlags & SCF_usingRobot)
 126                                 RobotCmd(0, "OpponentFlag 1 robot\n");
 127                         if (opponentFlags & SCF_fairRobot)
 128                                 RobotCmd(0, "OpponentFlag 1 fairRobot\n");
 129                 }
 130                 RobotCmd(0, "TickLength %.3f\n", speed / 1.0e6);
 131                 RobotCmd(0, "BeginGame\n");
 132                 RobotTimeStamp();
 133         }
 134         while (StartNewPiece(scr, ChooseOption(stdOptions))) {
 135                 if (robotEnable && !fairRobot)
 136                         RobotCmd(1, "NewPiece %d\n", ++pieceCount);
 137                 if (spied) {
 138                         short shapeNum;
 139                         netint2 data[1];
 140
 141                         shapeNum = ShapeToNetNum(curShape[scr]);
 142                         data[0] = hton2(shapeNum);
 143                         SendPacket(NP_newPiece, sizeof(data), data);
 144                 }
 145                 for (;;) {
 146                         changed = RefreshBoard(scr) || changed;
 147                         if (spying)
 148                                 changed = RefreshBoard(scr2) || changed;
 149                         if (changed) {
 150                                 RefreshScreen();
 151                                 changed = 0;
 152                         }
 153                         CheckNetConn();
 154                         switch (WaitMyEvent(&event, EM_any)) {
 155                                 case E_alarm:
 156                                         if (!MovePiece(scr, -1, 0))
 157                                                 goto nextPiece;
 158                                         else if (spied)
 159                                                 SendPacket(NP_down, 0, NULL);
 160                                         break;
 161                                 case E_key:
 162                                         p = strchr(keyTable, tolower(event.u.key));
 163                                         key = p - keyTable;
 164                                         if (robotEnable) {
 165                                                 RobotCmd(1, "UserKey %d %s\n",
 166                                                                 (int)(unsigned char)event.u.key,
 167                                                                 p ? keyNames[key] : "?");
 168                                                 break;
 169                                         }
 170                                         if (!p)
 171                                                 break;
 172                                 keyEvent:
 173                                         if (paused && (key != KT_pause) && (key != KT_redraw))
 174                                                 break;
 175                                         switch(key) {
 176                                                 case KT_left:
 177                                                         if (MovePiece(scr, 0, -1) && spied)
 178                                                                 SendPacket(NP_left, 0, NULL);
 179                                                         break;
 180                                                 case KT_right:
 181                                                         if (MovePiece(scr, 0, 1) && spied)
 182                                                                 SendPacket(NP_right, 0, NULL);
 183                                                         break;
 184                                                 case KT_rotate:
 185                                                         if (RotatePiece(scr) && spied)
 186                                                                 SendPacket(NP_rotate, 0, NULL);
 187                                                         break;
 188                                                 case KT_down:
 189                                                         if (MovePiece(scr, -1, 0) && spied)
 190                                                                 SendPacket(NP_down, 0, NULL);
 191                                                         break;
 192                                                 case KT_toggleSpy:
 193                                                         spying = (!spying) && (scr2 >= 0);
 194                                                         break;
 195                                                 case KT_drop:
 196                                                         if (DropPiece(scr) > 0) {
 197                                                                 if (spied)
 198                                                                         SendPacket(NP_drop, 0, NULL);
 199                                                                 SetITimer(speed, speed);
 200                                                         }
 201                                                         dropMode = dropModeEnable;
 202                                                         break;
 203                                                 case KT_pause:
 204                                                         pausedByMe = !pausedByMe;
 205                                                         if (game == GT_classicTwo) {
 206                                                                 netint2 data[1];
 207
 208                                                                 data[0] = hton2(pausedByMe);
 209                                                                 SendPacket(NP_pause, sizeof(data), data);
 210                                                         }
 211                                                         paused = pausedByMe || pausedByThem;
 212                                                         if (robotEnable)
 213                                                                 RobotCmd(1, "Pause %d %d\n", pausedByMe,
 214                                                                         pausedByThem);
 215                                                         ShowPause(pausedByMe, pausedByThem);
 216                                                         changed = 1;
 217                                                         break;
 218                                                 case KT_faster:
 219                                                         if (game != GT_onePlayer)
 220                                                                 break;
 221                                                         speed = speed * 0.8;
 222                                                         SetITimer(speed, SetITimer(0, 0));
 223                                                         ShowDisplayInfo();
 224                                                         changed = 1;
 225                                                         break;
 226                                                 case KT_redraw:
 227                                                         ScheduleFullRedraw();
 228                                                         if (paused)
 229                                                                 RefreshScreen();
 230                                                         break;
 231                                         }
 232                                         if (dropMode && DropPiece(scr) > 0) {
 233                                                 if (spied)
 234                                                         SendPacket(NP_drop, 0, NULL);
 235                                                 SetITimer(speed, speed);
 236                                         }
 237                                         break;
 238                                 case E_robot:
 239                                 {
 240                                         int num;
 241
 242                                         cmd = event.u.robot.data;
 243                                         if ((p = strchr(cmd, ' ')))
 244                                                 *p++ = 0;
 245                                         else
 246                                                 p = cmd + strlen(cmd);
 247                                         for (key = 0; keyNames[key]; ++key)
 248                                                 if (!strcmp(keyNames[key], cmd) &&
 249                                                                 (fairRobot || (1 == sscanf(p, "%d", &num) &&
 250                                                                         num == pieceCount)))
 251                                                         goto keyEvent;
 252                                         if (!strcmp(cmd, "Message")) {
 253                                                 Message(p);
 254                                                 changed = 1;
 255                                         }
 256                                         break;
 257                                 }
 258                                 case E_net:
 259                                         switch(event.u.net.type) {
 260                                                 case NP_giveJunk:
 261                                                 {
 262                                                         netint2 data[2];
 263                                                         short column;
 264
 265                                                         memcpy(data, event.u.net.data, sizeof(data[0]));
 266                                                         column = Random(0, boardWidth[scr]);
 267                                                         data[1] = hton2(column);
 268                                                         InsertJunk(scr, ntoh2(data[0]), column);
 269                                                         if (spied)
 270                                                                 SendPacket(NP_insertJunk, sizeof(data), data);
 271                                                         break;
 272                                                 }
 273                                                 case NP_newPiece:
 274                                                 {
 275                                                         short shapeNum;
 276                                                         netint2 data[1];
 277
 278                                                         FreezePiece(scr2);
 279                                                         memcpy(data, event.u.net.data, sizeof(data));
 280                                                         shapeNum = ntoh2(data[0]);
 281                                                         StartNewPiece(scr2, NetNumToShape(shapeNum));
 282                                                         break;
 283                                                 }
 284                                                 case NP_down:
 285                                                         MovePiece(scr2, -1, 0);
 286                                                         break;
 287                                                 case NP_left:
 288                                                         MovePiece(scr2, 0, -1);
 289                                                         break;
 290                                                 case NP_right:
 291                                                         MovePiece(scr2, 0, 1);
 292                                                         break;
 293                                                 case NP_rotate:
 294                                                         RotatePiece(scr2);
 295                                                         break;
 296                                                 case NP_drop:
 297                                                         DropPiece(scr2);
 298                                                         break;
 299                                                 case NP_clear:
 300                                                         ClearFullLines(scr2);
 301                                                         break;
 302                                                 case NP_insertJunk:
 303                                                 {
 304                                                         netint2 data[2];
 305
 306                                                         memcpy(data, event.u.net.data, sizeof(data));
 307                                                         InsertJunk(scr2, ntoh2(data[0]), ntoh2(data[1]));
 308                                                         break;
 309                                                 }
 310                                                 case NP_pause:
 311                                                 {
 312                                                         netint2 data[1];
 313
 314                                                         memcpy(data, event.u.net.data, sizeof(data));
 315                                                         pausedByThem = ntoh2(data[0]);
 316                                                         paused = pausedByMe || pausedByThem;
 317                                                         if (robotEnable)
 318                                                                 RobotCmd(1, "Pause %d %d\n", pausedByMe,
 319                                                                         pausedByThem);
 320                                                         ShowPause(pausedByMe, pausedByThem);
 321                                                         changed = 1;
 322                                                         break;
 323                                                 }
 324                                                 default:
 325                                                         break;
 326                                         }
 327                                         break;
 328                                 case E_lostRobot:
 329                                 case E_lostConn:
 330                                         wonLast = 1;
 331                                         goto gameOver;
 332                                 default:
 333                                         break;
 334                         }
 335                         if (paused != oldPaused) {
 336                                 if (paused)
 337                                         pauseTimeLeft = SetITimer(0, 0);
 338                                 else
 339                                         SetITimer(speed, pauseTimeLeft);
 340                                 oldPaused = paused;
 341                         }
 342                 }
 343         nextPiece:
 344                 dropMode = 0;
 345                 FreezePiece(scr);
 346                 linesCleared = ClearFullLines(scr);
 347                 if (linesCleared > 0 && spied)
 348                         SendPacket(NP_clear, 0, NULL);
 349                 if (game == GT_classicTwo && linesCleared > 1) {
 350                         short junkLines;
 351                         netint2 data[1];
 352
 353                         junkLines = linesCleared - (linesCleared < 4);
 354                         data[0] = hton2(junkLines);
 355                         SendPacket(NP_giveJunk, sizeof(data), data);
 356                 }
 357         }
 358         wonLast = 0;
 359
 360 gameOver:
 361         SetITimer(0, 0);
 362 }
 363
 364 ExtFunc int main(int argc, char **argv)
 365 {
 366         int initConn = 0, waitConn = 0, ch, done = 0;
 367         char *hostStr = NULL, *portStr = NULL;
 368         MyEvent event;
 369
 370         standoutEnable = colorEnable = 1;
 371         stepDownInterval = DEFAULT_INTERVAL;
 372         MapKeys(DEFAULT_KEYS);
 373         while ((ch = getopt(argc, argv, "hHRs:r:Fk:c:woDSCp:i:")) != -1)
 374                 switch (ch) {
 375                         case 'c':
 376                                 initConn = 1;
 377                                 hostStr = optarg;
 378                                 break;
 379                         case 'w':
 380                                 waitConn = 1;
 381                                 break;
 382                         case 'p':
 383                                 portStr = optarg;
 384                                 break;
 385                         case 'i':
 386                                 stepDownInterval = atof(optarg) * 1e6;
 387                                 break;
 388                         case 's':
 389                                 initSeed = atoi(optarg);
 390                                 myFlags |= SCF_setSeed;
 391                                 break;
 392                         case 'r':
 393                                 robotEnable = 1;
 394                                 robotProg = optarg;
 395                                 myFlags |= SCF_usingRobot;
 396                                 break;
 397                         case 'F':
 398                                 fairRobot = 1;
 399                                 myFlags |= SCF_fairRobot;
 400                                 break;
 401                         case 'D':
 402                                 dropModeEnable = 1;
 403                                 break;
 404                         case 'C':
 405                                 colorEnable = 0;
 406                                 break;
 407                         case 'S':
 408                                 standoutEnable = 0;
 409                                 break;
 410                         case 'k':
 411                                 MapKeys(optarg);
 412                                 break;
 413                         case 'H':
 414                                 DistInfo();
 415                                 exit(0);
 416                         case 'R':
 417                                 Rules();
 418                                 exit(0);
 419                         case 'h':
 420                                 Usage();
 421                                 exit(0);
 422                         default:
 423                                 Usage();
 424                                 exit(1);
 425                 }
 426         if (optind < argc || (initConn && waitConn)) {
 427                 Usage();
 428                 exit(1);
 429         }
 430         if (fairRobot && !robotEnable)
 431                 fatal("You can't use the -F option without the -r option");
 432         InitUtil();
 433         InitScreens();
 434         while(!done) {
 435                 if (robotEnable)
 436                         InitRobot(robotProg);
 437                 InitNet();
 438                 if (!initSeed)
 439                         SRandom(time(0));
 440                 if (initConn || waitConn) {
 441                         game = GT_classicTwo;
 442                         if(gameState != STATE_STARTING) {
 443                                 gameState = STATE_WAIT_CONNECTION;
 444                                 ShowDisplayInfo();
 445                                 RefreshScreen();
 446                         }
 447                         if (initConn)
 448                                 InitiateConnection(hostStr, portStr);
 449                         else if (waitConn)
 450                                 WaitForConnection(portStr);
 451                         gameState = STATE_PLAYING;
 452                         ShowDisplayInfo();
 453                         RefreshScreen();
 454                         {
 455                                 netint4 data[2];
 456                                 int major;
 457
 458                                 data[0] = hton4(MAJOR_VERSION);
 459                                 data[1] = hton4(PROTOCOL_VERSION);
 460                                 SendPacket(NP_version, sizeof(data), data);
 461                                 if (WaitMyEvent(&event, EM_net) != E_net)
 462                                         fatal("Network negotiation failed");
 463                                 memcpy(data, event.u.net.data, sizeof(data));
 464                                 major = ntoh4(data[0]);
 465                                 protocolVersion = ntoh4(data[1]);
 466                                 if (event.u.net.type != NP_version || major < MAJOR_VERSION)
 467                                         fatal("Your opponent is using an old, incompatible version\n"
 468                                               "of Netris.  They should get the latest version.");
 469                                 if (major > MAJOR_VERSION)
 470                                         fatal("Your opponent is using an newer, incompatible version\n"
 471                                               "of Netris.  Get the latest version.");
 472                                 if (protocolVersion > PROTOCOL_VERSION)
 473                                         protocolVersion = PROTOCOL_VERSION;
 474                         }
 475                         if (protocolVersion < 3 && stepDownInterval != DEFAULT_INTERVAL)
 476                                 fatal("Your opponent's version of Netris predates the -i option.\n"
 477                                       "For fairness, you shouldn't use the -i option either.");
 478                         {
 479                                 netint4 data[3];
 480                                 int len;
 481                                 int seed;
 482
 483                                 if (protocolVersion >= 3)
 484                                         len = sizeof(data);
 485                                 else
 486                                         len = sizeof(netint4[2]);
 487                                 if ((myFlags & SCF_setSeed))
 488                                         seed = initSeed;
 489                                 else
 490                                         seed = time(0);
 491                                 if (waitConn)
 492                                         SRandom(seed);
 493                                 data[0] = hton4(myFlags);
 494                                 data[1] = hton4(seed);
 495                                 data[2] = hton4(stepDownInterval);
 496                                 SendPacket(NP_startConn, len, data);
 497                                 if (WaitMyEvent(&event, EM_net) != E_net ||
 498                                     event.u.net.type != NP_startConn)
 499                                         fatal("Network negotiation failed");
 500                                 memcpy(data, event.u.net.data, len);
 501                                 opponentFlags = ntoh4(data[0]);
 502                                 seed = ntoh4(data[1]);
 503                                 if (initConn) {
 504                                         if ((opponentFlags & SCF_setSeed) != (myFlags & SCF_setSeed))
 505                                                 fatal("If one player sets the random number seed, "
 506                                                       "both must.");
 507                                         if ((myFlags & SCF_setSeed) && seed != initSeed)
 508                                                 fatal("Both players have set the random number seed, "
 509                                                       "and they are unequal.");
 510                                         if (protocolVersion >= 3 && stepDownInterval != ntoh4(data[2]))
 511                                                 fatal("Your opponent is using a different step-down "
 512                                                       "interval (-i).\nYou must both use the same one.");
 513                                         SRandom(seed);
 514                                 }
 515                         }
 516                         {
 517                                 char *userName;
 518                                 int len, i;
 519
 520                                 userName = getenv("LOGNAME");
 521                                 if (!userName || !userName[0])
 522                                         userName = getenv("USER");
 523                                 if (!userName || !userName[0])
 524                                         strcpy(userName, "???");
 525                                 len = strlen(userName)+1;
 526                                 if (len > sizeof(opponentName))
 527                                         len = sizeof(opponentName);
 528                                 SendPacket(NP_userName, len, userName);
 529                                 if (WaitMyEvent(&event, EM_net) != E_net ||
 530                                     event.u.net.type != NP_userName)
 531                                         fatal("Network negotiation failed");
 532                                 strncpy(opponentName, event.u.net.data,
 533                                         sizeof(opponentName)-1);
 534                                 opponentName[sizeof(opponentName)-1] = 0;
 535                                 for (i = 0; opponentName[i]; ++i)
 536                                         if (!isprint(opponentName[i]))
 537                                                 opponentName[i] = '?';
 538                                 for (i = 0; opponentHost[i]; ++i)
 539                                         if (!isprint(opponentHost[i]))
 540                                                 opponentHost[i] = '?';
 541                         }
 542                         OneGame(0, 1);
 543                 }
 544                 else {
 545                         game = GT_onePlayer;
 546                         OneGame(0, -1);
 547                 }
 548                 if (wonLast) {
 549                         won++;
 550                 } else {
 551                         lost++;
 552                         WaitMyEvent(&event, EM_net);
 553                 }
 554                 CloseNet();
 555                 if (robotEnable) {
 556                         CloseRobot();
 557                 } else {
 558                         gameState = STATE_WAIT_KEYPRESS;
 559                         ShowDisplayInfo();
 560                         RefreshScreen();
 561                         while(getchar() != keyTable[KT_new])
 562                                 ;
 563                 }
 564         }
 565
 566         return 0;
 567 }
 568
 569 /*
 570  * vi: ts=4 ai
 571  * vim: noai si
 572  */