judge/manager/stratego.cpp

   1
   2
   3 #include "stratego.h"
   4
   5 using namespace std;
   6
   7 /**
   8  * Static variables
   9  */
  10
  11 //nothing, boulder, flag, spy, scout, miner, sergeant, lietenant, captain, major, colonel, general, marshal, bomb, error
  12 char  Piece::tokens[] = {'.','*','F','s','9','8','7','6','5','4','3','2','1','B','?'};
  13 int Piece::maxUnits[] = {0,0,1,1,8,5,4,4,4,3,2,1,1,6,0};
  14
  15
  16
  17 #ifdef BUILD_GRAPHICS
  18 Piece::TextureManager Piece::textures;
  19
  20 Piece::TextureManager::~TextureManager()
  21 {
  22         Array<Texture*>::Iterator i(*this);
  23         while (i.Good())
  24         {
  25                 delete (*i);
  26                 ++i;
  27         }
  28 }
  29
  30 Texture & Piece::TextureManager::operator[](const LUint & at)
  31 {
  32         while (Array<Texture*>::Size() <= at)
  33         {
  34                 char buffer[BUFSIZ];
  35                 sprintf(buffer, "images/piece%lu.bmp", Array<Texture*>::Size());
  36                 Array<Texture*>::Add(new Texture(buffer, false));
  37
  38         }
  39         return *(Array<Texture*>::operator[](at));
  40 }
  41 #endif //BUILD_GRAPHICS
  42
  43 /**
  44  * Gets the type of a piece, based off a character token
  45  * @param fromToken - character identifying the piece
  46  * @returns The type of the piece
  47  */
  48 Piece::Type Piece::GetType(char fromToken)
  49 {
  50         for (int ii=0; ii <= (int)(Piece::BOMB); ++ii)
  51         {
  52                 if (tokens[ii] == fromToken)
  53                 {
  54                         return Type(Piece::NOTHING + ii);
  55                 }
  56         }
  57         return Piece::BOULDER;
  58 }
  59
  60 /**
  61  * Gets the opposite to the indicated colour
  62  */
  63 Piece::Colour Piece::OppositeColour(const Colour & colour)
  64 {
  65         switch (colour)
  66         {
  67                 case Piece::RED:
  68                         return Piece::BLUE;
  69                         break;
  70                 case Piece::BLUE:
  71                         return Piece::RED;
  72                         break;
  73                 case Piece::BOTH:
  74                         return Piece::BOTH;
  75                         break;
  76                 case Piece::NONE:
  77                         return Piece::NONE;
  78         }
  79 }
  80
  81 /**
  82  * Construct a new, empty board
  83  * @param newWidth - the width of the board
  84  * @param newHeight - the height of the board
  85  */
  86 Board::Board(int newWidth, int newHeight) : winner(Piece::NONE), width(newWidth), height(newHeight), board(NULL), pieces()
  87 {
  88         board = new Piece**[width];
  89         for (int x=0; x < width; ++x)
  90         {
  91                 board[x] = new Piece*[height];
  92                 for (int y=0; y < height; ++y)
  93                         board[x][y] = NULL;
  94         }
  95 }
  96
  97 /**
  98  * Cleanup a board
  99  */
 100 Board::~Board()
 101 {
 102         for (int x=0; x < width; ++x)
 103         {
 104                 for (int y=0; y < height; ++y)
 105                         delete board[x][y];
 106                 delete [] board[x];
 107         }
 108 }
 109
 110 /**
 111  * Print textual representation of the board to a stream
 112  * @param stream - the stream to print information to
 113  * @param reveal - Pieces matching this colour will have their identify revealed, other pieces will be shown as '#'
 114  */
 115 void Board::Print(FILE * stream, const Piece::Colour & reveal)
 116 {
 117         for (int y=0; y < height; ++y)
 118         {
 119                 for (int x=0; x < width; ++x)
 120                 {
 121                         Piece * piece = board[x][y];
 122                         if (piece == NULL)
 123                         {
 124                                 fprintf(stream, ".");
 125                         }
 126                         else if (piece->colour != Piece::NONE && (piece->colour == reveal || reveal == Piece::BOTH))
 127                         {
 128
 129                                 fprintf(stream, "%c", Piece::tokens[piece->type]);
 130
 131
 132                         }
 133                         else
 134                         {
 135                                 switch (piece->colour)
 136                                 {
 137                                         case Piece::RED:
 138                                         case Piece::BLUE:
 139                                                 fprintf(stream, "#");
 140                                                 break;
 141                                         case Piece::NONE:
 142                                                 fprintf(stream, "+");
 143                                                 break;
 144                                         case Piece::BOTH:
 145                                                 fprintf(stream, "$");
 146                                                 break;
 147                                 }
 148                         }
 149                 }
 150                 fprintf(stream, "\n");
 151         }
 152
 153 }
 154
 155 /**
 156  * Print textual representation of the board to a stream
 157  * @param stream - the stream to print information to
 158  * @param reveal - Pieces matching this colour will have their identify revealed, other pieces will be shown as '#'
 159  */
 160 void Board::PrintPretty(FILE * stream, const Piece::Colour & reveal)
 161 {
 162         for (int y=0; y < height; ++y)
 163         {
 164                 for (int x=0; x < width; ++x)
 165                 {
 166                         Piece * piece = board[x][y];
 167                         if (piece == NULL)
 168                         {
 169                                 fprintf(stream, ".");
 170                         }
 171                         else if (piece->colour != Piece::NONE && (piece->colour == reveal || reveal == Piece::BOTH))
 172                         {
 173                                 switch (piece->colour)
 174                                 {
 175                                         case Piece::RED:
 176                                                 fprintf(stream, "%c[%d;%d;%dm",0x1B,1,31,40);
 177                                                 break;
 178                                         case Piece::BLUE:
 179                                                 fprintf(stream, "%c[%d;%d;%dm",0x1B,1,34,40);
 180                                                 break;
 181                                         default:
 182                                                 break;
 183                                 }
 184                                 fprintf(stream, "%c", Piece::tokens[piece->type]);
 185
 186                         }
 187                         else
 188                         {
 189                                 switch (piece->colour)
 190                                 {
 191                                         case Piece::RED:
 192                                                 fprintf(stream, "%c[%d;%d;%dm",0x1B,1,31,41);
 193
 194                                                 break;
 195                                         case Piece::BLUE:
 196                                                 fprintf(stream, "%c[%d;%d;%dm",0x1B,1,34,44);
 197                                                 break;
 198                                         case Piece::NONE:
 199                                                 fprintf(stream, "%c[%d;%d;%dm",0x1B,1,37,47);
 200                                                 break;
 201                                         case Piece::BOTH:
 202                                                 //Should never see this
 203                                                 fprintf(stream, "%c[%d;%d;%dm",0x1B,1,33,43);
 204                                                 break;
 205
 206                                 }
 207                                 fprintf(stream, "#");
 208
 209                         }
 210                         fprintf(stream, "%c[%d;%d;%dm",0x1B,0,7,0);
 211                 }
 212                 fprintf(stream, "\n");
 213         }
 214
 215 }
 216
 217
 218 #ifdef BUILD_GRAPHICS
 219 /**
 220  * Draw the board state to graphics
 221  * @param reveal - Pieces matching this colour will be revealed. If Piece::BOTH, all pieces will be revealed
 222  * @param showRevealed - If true, then all pieces that have taken part in combat will be revealed, regardless of colour.
 223  *                       If false, only pieces matching the colour reveal will be revealed
 224  */
 225 void Board::Draw(const Piece::Colour & reveal, bool showRevealed)
 226 {
 227
 228         if (!Graphics::Initialised())
 229         {
 230                 fprintf(stderr, "ERROR - Board::Draw called whilst graphics disabled!!!\n");
 231                 exit(EXIT_FAILURE);
 232
 233         }
 234
 235         Graphics::ClearScreen();
 236
 237         for (int y=0; y < height; ++y)
 238         {
 239                 for (int x=0; x < width; ++x)
 240                 {
 241                         Piece * piece = board[x][y];
 242                         if (piece == NULL)
 243                         {
 244                                 //Don't display anything
 245
 246                         }
 247                         else if ((piece->colour != Piece::NONE && (piece->colour == reveal || reveal == Piece::BOTH))
 248                                         || (piece->beenRevealed && showRevealed))
 249                         {
 250                                 //Display the piece
 251                                 Piece::textures[(int)(piece->type)].DrawColour(x*32,y*32,0,1, Piece::GetGraphicsColour(piece->colour));
 252
 253                         }
 254                         else
 255                         {
 256                                 switch (piece->colour)
 257                                 {
 258                                         case Piece::RED:
 259                                                 Piece::textures[(int)(Piece::NOTHING)].DrawColour(x*32,y*32,0,1, Piece::GetGraphicsColour(piece->colour));
 260                                                 break;
 261                                         case Piece::BLUE:
 262                                                 Piece::textures[(int)(Piece::NOTHING)].DrawColour(x*32,y*32,0,1, Piece::GetGraphicsColour(piece->colour));
 263                                                 break;
 264                                         case Piece::NONE:
 265                                                 Piece::textures[(int)(Piece::BOULDER)].DrawColour(x*32,y*32,0,1, Piece::GetGraphicsColour(piece->colour));
 266                                                 break;
 267                                         case Piece::BOTH:
 268                                                 Piece::textures[(int)(Piece::BOULDER)].DrawColour(x*32,y*32,0,1, Piece::GetGraphicsColour(piece->colour));
 269                                                 break;
 270                                 }
 271                         }
 272                 }
 273
 274         }
 275         Graphics::UpdateScreen();
 276
 277 }
 278 #endif //BUILD_GRAPHICS
 279
 280 /**
 281  * Adds a piece to the board
 282  * @param x - x-coord to place the piece at, starting at zero, must be less than board width
 283  * @param y - y-coord to place the piece at, starting at zero, must be less than board height
 284  * @param newType - the Type of the piece
 285  * @param newColour - the Colour of the piece
 286  * @returns true if and only if the piece could be successfully added.
 287  */
 288 bool Board::AddPiece(int x, int y, const Piece::Type & newType, const Piece::Colour & newColour)
 289 {
 290         if (board == NULL || x < 0 || y < 0 || x >= width || y >= width || board[x][y] != NULL)
 291                 return false;
 292
 293         Piece * piece = new Piece(newType, newColour);
 294         board[x][y] = piece;
 295
 296         pieces.push_back(piece);
 297         return true;
 298 }
 299
 300 /**
 301  * Gets a pointer to a piece at a board location
 302  * UNUSED
 303  * @param x - x-coord of the piece
 304  * @param y - y-coord of the piece
 305  * @returns pointer to the piece, or NULL if the board location was empty
 306  * @throws error if board is null or coords are invalid
 307  */
 308 Piece * Board::GetPiece(int x, int y)
 309 {
 310         assert(board != NULL);
 311         assert(x >= 0 && x < width && y >= 0 && y < height);
 312         return board[x][y];
 313 }
 314
 315 /**
 316  * Moves a piece at a specified position in the specified direction, handles combat if necessary, updates state of the board
 317  * @param x - x-coord of the piece
 318  * @param y - y-coord of the piece
 319  * @param direction - Direction in which to move (UP, DOWN, LEFT or RIGHT)
 320  * @param colour - Colour which the piece must match for the move to be valid
 321  * @returns A MovementResult which indicates the result of the move
 322  */
 323 MovementResult Board::MovePiece(int x, int y, const Direction & direction, int multiplier,const Piece::Colour & colour)
 324 {
 325         if (board == NULL)
 326         {
 327                 return MovementResult(MovementResult::NO_BOARD);
 328         }
 329         if (!(x >= 0 && x < width && y >= 0 && y < height))
 330         {
 331                 return MovementResult(MovementResult::INVALID_POSITION);
 332         }
 333         Piece * target = board[x][y];
 334         if (target == NULL)
 335         {
 336                 return MovementResult(MovementResult::NO_SELECTION);
 337         }
 338         if (!(colour == Piece::NONE || target->colour == colour))
 339         {
 340                 return MovementResult(MovementResult::NOT_YOUR_UNIT);
 341         }
 342         if (target->type == Piece::FLAG || target->type == Piece::BOMB || target->type == Piece::BOULDER)
 343         {
 344                 return MovementResult(MovementResult::IMMOBILE_UNIT);
 345         }
 346         if (multiplier < 1)
 347                 return MovementResult(MovementResult::INVALID_DIRECTION); //Don't allow moves that don't actually move forward
 348         if (multiplier > 1 && target->type != Piece::SCOUT)
 349         {
 350                 return MovementResult(MovementResult::INVALID_DIRECTION); //Can only move a scout multiple times.
 351         }
 352         int x2 = x; int y2 = y;
 353
 354         for (int ii=0; ii < multiplier; ++ii)
 355         {
 356                 switch (direction)
 357                 {
 358                         case UP:
 359                                 --y2;
 360                                 break;
 361                         case DOWN:
 362                                 ++y2;
 363                                 break;
 364                         case LEFT:
 365                                 --x2;
 366                                 break;
 367                         case RIGHT:
 368                                 ++x2;
 369                                 break;
 370                 }
 371                 if (!(x2 >= 0 && x2 < width && y2 >= 0 && y2 < height))
 372                 {
 373                         return MovementResult(MovementResult::INVALID_DIRECTION);
 374                 }
 375                 if (ii < multiplier-1 && board[x2][y2] != NULL)
 376                 {
 377                         return MovementResult(MovementResult::POSITION_FULL);
 378                 }
 379         }
 380         Piece * defender = board[x2][y2];
 381         if (defender == NULL)
 382         {
 383                 board[x][y] = NULL;
 384                 board[x2][y2] = target;
 385         }
 386         else if (defender->colour != target->colour)
 387         {
 388                 defender->beenRevealed = true;
 389                 target->beenRevealed = true;
 390
 391                 Piece::Type defenderType = defender->type;
 392                 Piece::Type attackerType = target->type;
 393
 394                 if (defender->colour == Piece::NONE)
 395                 {
 396                         return MovementResult(MovementResult::POSITION_FULL);
 397                 }
 398                 if (defender->type == Piece::FLAG)
 399                 {
 400                         winner = target->colour;
 401                         return MovementResult(MovementResult::VICTORY_FLAG);
 402                 }
 403                 else if (defender->type == Piece::BOMB)
 404                 {
 405                         if (target->type == Piece::MINER)
 406                         {
 407                                 RemovePiece(defender);
 408                                 delete defender;
 409                                 board[x][y] = NULL;
 410                                 board[x2][y2] = target;
 411                                 return MovementResult(MovementResult::KILLS, attackerType, defenderType);
 412                         }
 413                         else
 414                         {
 415                                 //Use this to destroy only the attacking piece, and not the bomb
 416                                 RemovePiece(target);
 417                                 delete target;
 418                                 board[x][y] = NULL;
 419                                 return MovementResult(MovementResult::DIES, attackerType, defenderType);
 420
 421                                 /*
 422                                 //Use this to destroy both the bomb and the attacking piece
 423                                 RemovePiece(defender);
 424                                 RemovePiece(target);
 425                                 delete defender;
 426                                 delete target;
 427                                 board[x][y] = NULL;
 428                                 board[x2][y2] = NULL;
 429                                 return MovementResult(MovementResult::BOTH_DIE, attackerType, defenderType);
 430                                 */
 431                         }
 432                 }
 433                 else if (defender->type == Piece::MARSHAL && target->type == Piece::SPY)
 434                 {
 435                         RemovePiece(defender);
 436                         delete defender;
 437                         board[x][y] = NULL;
 438                         board[x2][y2] = target;
 439                         return MovementResult(MovementResult::KILLS, attackerType, defenderType);
 440                 }
 441                 else if (target->operator > (*defender))
 442                 {
 443                         RemovePiece(defender);
 444                         delete defender;
 445                         board[x][y] = NULL;
 446                         board[x2][y2] = target;
 447                         return MovementResult(MovementResult::KILLS, attackerType, defenderType);
 448                 }
 449                 else if (target->operator==(*defender))// && rand() % 2 == 0)
 450                 {
 451                         RemovePiece(defender);
 452                         RemovePiece(target);
 453                         delete defender;
 454                         delete target;
 455                         board[x][y] = NULL;
 456                         board[x2][y2] = NULL;
 457                         return MovementResult(MovementResult::BOTH_DIE, attackerType, defenderType);
 458                 }
 459                 else
 460                 {
 461                         RemovePiece(target);
 462                         delete target;
 463                         board[x][y] = NULL;
 464                         return MovementResult(MovementResult::DIES, attackerType, defenderType);
 465                 }
 466         }
 467         else
 468         {
 469                 return MovementResult(MovementResult::POSITION_FULL);
 470         }
 471         return MovementResult(MovementResult::OK);
 472 }
 473
 474 /**
 475  * Removes a piece from the board
 476  * @param piece The piece to remove
 477  * @returns true iff the piece actually existed
 478  */
 479 bool Board::RemovePiece(Piece * piece)
 480 {
 481         bool result = false;
 482         for (int x = 0; x < width; ++x)
 483         {
 484                 for (int y = 0; y < height; ++y)
 485                 {
 486                         if (board[x][y] == piece)
 487                         {
 488                                 result = true;
 489                                 board[x][y] = NULL;
 490                         }
 491                 }
 492         }
 493
 494         vector<Piece*>::iterator i = pieces.begin();
 495         while (i != pieces.end())
 496         {
 497                 if ((*i) == piece)
 498                 {
 499                         i = pieces.erase(i);
 500                         result = true;
 501                         continue;
 502                 }
 503                 ++i;
 504         }
 505         return result;
 506 }
 507
 508 /**
 509  * Returns the total value of pieces belonging to colour
 510  * @param colour the colour
 511  * @returns the total value of pieces belonging to colour.
 512  *      (Redundant repetition <3)
 513  */
 514 int Board::TotalPieceValue(const Piece::Colour & colour) const
 515 {
 516         int result = 0;
 517         for (vector<Piece*>::const_iterator i = pieces.begin(); i != pieces.end(); ++i)
 518         {
 519                 if ((*i)->colour == colour || colour == Piece::BOTH)
 520                 {
 521                         result += (*i)->PieceValue();
 522                 }
 523         }
 524         return result;
 525 }
 526
 527 /**
 528  * Returns the total number of mobile pieces belonging to colour
 529  * @param colour the colour
 530  * @returns the total value of mobile pieces belonging to colour.
 531  *      (Redundant repetition <3)
 532  */
 533 int Board::MobilePieces(const Piece::Colour & colour) const
 534 {
 535         int result = 0;
 536         for (vector<Piece*>::const_iterator i = pieces.begin(); i != pieces.end(); ++i)
 537         {
 538                 if ((*i)->colour == colour || colour == Piece::BOTH)
 539                 {
 540                         if ((*i)->type <= Piece::MARSHAL && (*i)->type >= Piece::SPY)
 541                                 result++;
 542                 }
 543         }
 544         return result;
 545 }
 546
 547