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