client/src/variants/Chakart.js

   1 import { ChessRules, Move, PiPo } from "@/base_rules";
   2 import { SuicideRules } from "@/variants/Suicide";
   3
   4 export class ChakartRules extends ChessRules {
   5   static get PawnSpecs() {
   6     return SuicideRules.PawnSpecs;
   7   }
   8
   9   static get HasCastle() {
  10     return false;
  11   }
  12
  13   static get CorrConfirm() {
  14     // Because of bonus effects
  15     return false;
  16   }
  17
  18   static get CanAnalyze() {
  19     return false;
  20   }
  21
  22   hoverHighlight(x, y) {
  23     if (
  24       this.firstMove.appear.length == 0 ||
  25       this.firstMove.vanish.length == 0 ||
  26       this.board[x][y] != V.EMPTY
  27     ) {
  28       return false;
  29     }
  30     const deltaX = Math.abs(this.firstMove.end.x - x);
  31     const deltaY = Math.abs(this.firstMove.end.y - y);
  32     return (
  33       this.subTurn == 2 &&
  34       // Condition: rook or bishop move, may capture, but no bonus move
  35       [V.ROOK, V.BISHOP].includes(this.firstMove.vanish[0].p) &&
  36       (
  37         this.firstMove.vanish.length == 1 ||
  38         ['w', 'b'].includes(this.firstMove.vanish[1].c)
  39       ) &&
  40       (
  41         this.firstMove.vanish[0].p == V.ROOK && deltaX == 1 && deltaY == 1 ||
  42         this.firstMove.vanish[0].p == V.BISHOP && deltaX + deltaY == 1
  43       )
  44     );
  45   }
  46
  47   static get IMMOBILIZE_CODE() {
  48     return {
  49       'p': 's',
  50       'r': 'u',
  51       'n': 'o',
  52       'b': 'c',
  53       'q': 't',
  54       'k': 'l'
  55     };
  56   }
  57
  58   static get IMMOBILIZE_DECODE() {
  59     return {
  60       's': 'p',
  61       'u': 'r',
  62       'o': 'n',
  63       'c': 'b',
  64       't': 'q',
  65       'l': 'k'
  66     };
  67   }
  68
  69   static get INVISIBLE_QUEEN() {
  70     return 'i';
  71   }
  72
  73   // Fictive color 'a', bomb banana mushroom egg
  74   static get BOMB() {
  75     // Doesn't collide with bishop because color 'a'
  76     return 'b';
  77   }
  78   static get BANANA() {
  79     return 'n';
  80   }
  81   static get EGG() {
  82     return 'e';
  83   }
  84   static get MUSHROOM() {
  85     return 'm';
  86   }
  87
  88   static get PIECES() {
  89     return (
  90       ChessRules.PIECES.concat(
  91       Object.keys(V.IMMOBILIZE_DECODE)).concat(
  92       [V.BANANA, V.BOMB, V.EGG, V.MUSHROOM, V.INVISIBLE_QUEEN])
  93     );
  94   }
  95
  96   getPpath(b) {
  97     let prefix = "";
  98     if (
  99       b[0] == 'a' ||
 100       b[1] == V.INVISIBLE_QUEEN ||
 101       Object.keys(V.IMMOBILIZE_DECODE).includes(b[1])
 102     ) {
 103       prefix = "Chakart/";
 104     }
 105     return prefix + b;
 106   }
 107
 108   static ParseFen(fen) {
 109     const fenParts = fen.split(" ");
 110     return Object.assign(
 111       ChessRules.ParseFen(fen),
 112       { captured: fenParts[5] }
 113     );
 114   }
 115
 116   // King can be l or L (immobilized) --> similar to Alice variant
 117   static IsGoodPosition(position) {
 118     if (position.length == 0) return false;
 119     const rows = position.split("/");
 120     if (rows.length != V.size.x) return false;
 121     let kings = { "k": 0, "K": 0, 'l': 0, 'L': 0 };
 122     for (let row of rows) {
 123       let sumElts = 0;
 124       for (let i = 0; i < row.length; i++) {
 125         if (['K','k','L','l'].includes(row[i])) kings[row[i]]++;
 126         if (V.PIECES.includes(row[i].toLowerCase())) sumElts++;
 127         else {
 128           const num = parseInt(row[i]);
 129           if (isNaN(num)) return false;
 130           sumElts += num;
 131         }
 132       }
 133       if (sumElts != V.size.y) return false;
 134     }
 135     if (kings['k'] + kings['l'] != 1 || kings['K'] + kings['L'] != 1)
 136       return false;
 137     return true;
 138   }
 139
 140   static IsGoodFlags(flags) {
 141     // 4 for Peach + Mario w, b
 142     return !!flags.match(/^[01]{4,4}$/);
 143   }
 144
 145   setFlags(fenflags) {
 146     // King can send shell? Queen can be invisible?
 147     this.powerFlags = {
 148       w: [{ 'k': false, 'q': false }],
 149       b: [{ 'k': false, 'q': false }]
 150     };
 151     for (let c of ["w", "b"]) {
 152       for (let p of ['k', 'q']) {
 153         this.powerFlags[c][p] =
 154           fenFlags.charAt((c == "w" ? 0 : 2) + (p == 'k' ? 0 : 1)) == "1";
 155       }
 156     }
 157   }
 158
 159   aggregateFlags() {
 160     return this.powerFlags;
 161   }
 162
 163   disaggregateFlags(flags) {
 164     this.powerFlags = flags;
 165   }
 166
 167   getFen() {
 168     return super.getFen() + " " + this.getCapturedFen();
 169   }
 170
 171   getFenForRepeat() {
 172     return super.getFenForRepeat() + "_" + this.getCapturedFen();
 173   }
 174
 175   getCapturedFen() {
 176     let counts = [...Array(10).fill(0)];
 177     let i = 0;
 178     for (let p of [V.ROOK, V.KNIGHT, V.BISHOP, V.QUEEN, V.PAWN]) {
 179       counts[i] = this.captured["w"][p];
 180       counts[5 + i] = this.captured["b"][p];
 181       i++;
 182     }
 183     return counts.join("");
 184   }
 185
 186   setOtherVariables(fen) {
 187     const fenParsed = V.ParseFen(fen);
 188     // Initialize captured pieces' counts from FEN
 189     this.captured = {
 190       w: {
 191         [V.ROOK]: parseInt(fenParsed.captured[0]),
 192         [V.KNIGHT]: parseInt(fenParsed.captured[1]),
 193         [V.BISHOP]: parseInt(fenParsed.captured[2]),
 194         [V.QUEEN]: parseInt(fenParsed.captured[3]),
 195         [V.PAWN]: parseInt(fenParsed.captured[4]),
 196       },
 197       b: {
 198         [V.ROOK]: parseInt(fenParsed.captured[5]),
 199         [V.KNIGHT]: parseInt(fenParsed.captured[6]),
 200         [V.BISHOP]: parseInt(fenParsed.captured[7]),
 201         [V.QUEEN]: parseInt(fenParsed.captured[8]),
 202         [V.PAWN]: parseInt(fenParsed.captured[9]),
 203       }
 204     };
 205     this.firstMove = [];
 206     this.subTurn = 1;
 207   }
 208
 209   getFlagsFen() {
 210     let fen = "";
 211     // Add power flags
 212     for (let c of ["w", "b"])
 213       for (let p of ['k', 'q']) fen += (this.powerFlags[c][p] ? "1" : "0");
 214     return fen;
 215   }
 216
 217   static get RESERVE_PIECES() {
 218     return [V.PAWN, V.ROOK, V.KNIGHT, V.BISHOP, V.QUEEN];
 219   }
 220
 221   getReserveMoves([x, y]) {
 222     const color = this.turn;
 223     const p = V.RESERVE_PIECES[y];
 224     if (this.reserve[color][p] == 0) return [];
 225     let moves = [];
 226     const start = (color == 'w' && p == V.PAWN ? 1 : 0);
 227     const end = (color == 'b' && p == V.PAWN ? 7 : 8);
 228     for (let i = start; i < end; i++) {
 229       for (let j = 0; j < V.size.y; j++) {
 230         if (this.board[i][j] == V.EMPTY) {
 231           let mv = new Move({
 232             appear: [
 233               new PiPo({
 234                 x: i,
 235                 y: j,
 236                 c: color,
 237                 p: p
 238               })
 239             ],
 240             vanish: [],
 241             start: { x: x, y: y }, //a bit artificial...
 242             end: { x: i, y: j }
 243           });
 244           moves.push(mv);
 245         }
 246       }
 247     }
 248     return moves;
 249   }
 250
 251   getPotentialMovesFrom([x, y]) {
 252     if (this.subTurn == 1) return super.getPotentialMovesFrom([x, y]);
 253     if (this.subTurn == 2) {
 254       let moves = [];
 255       const L = this.firstMove.length;
 256       const fm = this.firstMove[L-1];
 257       switch (fm.end.effect) {
 258         // case 0: a click is required (banana or bomb)
 259         case 1:
 260           // Exchange position with any piece
 261           for (let i=0; i<8; i++) {
 262             for (let j=0; j<8; j++) {
 263               const colIJ = this.getColor(i, j);
 264               if (
 265                 i != x &&
 266                 j != y &&
 267                 this.board[i][j] != V.EMPTY &&
 268                 colIJ != 'a'
 269               ) {
 270                 const movedUnit = new PiPo({
 271                   x: x,
 272                   y: y,
 273                   c: colIJ,
 274                   p: this.getPiece(i, j)
 275                 });
 276                 let mMove = this.getBasicMove([x, y], [i, j]);
 277                 mMove.appear.push(movedUnit);
 278                 moves.push(mMove);
 279               }
 280             }
 281           }
 282           break;
 283         case 2:
 284           // Resurrect a captured piece
 285           if (x >= V.size.x) moves = this.getReserveMoves([x, y]);
 286           break;
 287         case 3:
 288           // Play again with the same piece
 289           if (fm.end.x == x && fm.end.y == y)
 290             moves = super.getPotentialMovesFrom([x, y]);
 291           break;
 292       }
 293       return moves;
 294     }
 295   }
 296
 297   getBasicMove([x1, y1], [x2, y2], tr) {
 298     // TODO: if this.subTurn == 2 :: no mushroom effect
 299     // (first, transformation. then:)
 300     // Apply mushroom, bomb or banana effect (hidden to the player).
 301     // Determine egg effect, too, and apply its first part if possible.
 302     // add egg + add mushroom for pawns.
 303     let move = super.getBasicMove([x1, y1], [x2, y2]);
 304     // TODO
 305     return move;
 306     // Infer move type based on its effects (used to decide subTurn 1 --> 2)
 307     // --> impossible étant donné juste first part (egg --> effect?)
 308     // => stocker l'effet (i, ii ou iii) dans le coup directement,
 309     // Pas terrible, mais y'aura pas 36 variantes comme ça. Disons end.effect == 0, 1, 2 ou 3
 310     // 0 => tour ou fou, pose potentielle.
 311     // If queen can be invisible, add move same start + end but final type changes
 312   }
 313
 314   getEnpassantCaptures([x, y], shiftX) {
 315     const Lep = this.epSquares.length;
 316     const epSquare = this.epSquares[Lep - 1]; //always at least one element
 317     let enpassantMove = null;
 318     if (
 319       !!epSquare &&
 320       epSquare.x == x + shiftX &&
 321       Math.abs(epSquare.y - y) == 1
 322     ) {
 323       // Not using this.getBasicMove() because the mushroom has no effect
 324       enpassantMove = super.getBasicMove([x, y], [epSquare.x, epSquare.y]);
 325       enpassantMove.vanish.push({
 326         x: x,
 327         y: epSquare.y,
 328         p: V.PAWN,
 329         c: this.getColor(x, epSquare.y)
 330       });
 331     }
 332     return !!enpassantMove ? [enpassantMove] : [];
 333   }
 334
 335   getPotentialQueenMoves(sq) {
 336     const normalMoves = super.getPotentialQueenMoves(sq);
 337     // If flag allows it, add 'invisible movements'
 338     let invisibleMoves = [];
 339     if (this.powerFlags[this.turn][V.QUEEN]) {
 340       normalMoves.forEach(m => {
 341         if (m.vanish.length == 1) {
 342           let im = JSON.parse(JSON.stringify(m));
 343           m.appear[0].p = V.INVISIBLE_QUEEN;
 344           invisibleMoves.push(im);
 345         }
 346       });
 347     }
 348     return normalMoves.concat(invisibleMoves);
 349   }
 350
 351   getPotentialKingMoves([x, y]) {
 352     let moves = super.getPotentialKingMoves([x, y]);
 353     const color = this.turn;
 354     // If flag allows it, add 'remote shell captures'
 355     if (this.powerFlags[this.turn][V.KING]) {
 356       V.steps[V.ROOK].concat(V.steps[V.BISHOP]).forEach(step => {
 357         let [i, j] = [x + 2 * step[0], y + 2 * step[1]];
 358         while (
 359           V.OnBoard(i, j) &&
 360           (
 361             this.board[i][j] == V.EMPTY ||
 362             (
 363               this.getColor(i, j) == 'a' &&
 364               [V.EGG, V.MUSHROOM].includes(this.getPiece(i, j))
 365             )
 366           )
 367         ) {
 368           i += step[0];
 369           j += step[1];
 370         }
 371         if (V.OnBoard(i, j) && this.getColor(i, j) != color)
 372           // May just destroy a bomb or banana:
 373           moves.push(this.getBasicMove([x, y], [i, j]));
 374       });
 375     }
 376     return moves;
 377   }
 378
 379   getSlideNJumpMoves([x, y], steps, oneStep) {
 380     let moves = [];
 381     outerLoop: for (let step of steps) {
 382       let i = x + step[0];
 383       let j = y + step[1];
 384       while (
 385         V.OnBoard(i, j) &&
 386         (
 387           this.board[i][j] == V.EMPTY ||
 388           (
 389             this.getColor(i, j) == 'a' &&
 390             [V.EGG, V.MUSHROOM].includes(this.getPiece(i, j))
 391           )
 392         )
 393       ) {
 394         moves.push(this.getBasicMove([x, y], [i, j]));
 395         if (oneStep) continue outerLoop;
 396         i += step[0];
 397         j += step[1];
 398       }
 399       if (V.OnBoard(i, j) && this.canTake([x, y], [i, j]))
 400         moves.push(this.getBasicMove([x, y], [i, j]));
 401     }
 402     return moves;
 403   }
 404
 405   getAllPotentialMoves() {
 406     if (this.subTurn == 1) return super.getAllPotentialMoves();
 407     let moves = [];
 408     const L = this.firstMove.length;
 409     const fm = this.firstMove[L-1];
 410     //switch (fm.end.effect) {
 411     //  case 0: //...
 412   }
 413
 414   doClick(square) {
 415     // TODO: if click on x, y (piece), then return empty move same as Dynamo
 416     if (isNaN(square[0])) return null;
 417     // TODO: If subTurn == 2:
 418     // if square is empty && firstMove is compatible,
 419     // complete the move (banana or bomb or piece exchange).
 420     // if square not empty, just complete with empty move
 421     const Lf = this.firstMove.length;
 422     if (this.subTurn == 2) {
 423       if (
 424         this.board[square[0]][square[1]] == V.EMPTY &&
 425         (La == 0 || !this.oppositeMoves(this.amoves[La-1], this.firstMove[Lf-1]))
 426       ) {
 427         return {
 428           start: { x: -1, y: -1 },
 429           end: { x: -1, y: -1 },
 430           appear: [],
 431           vanish: []
 432         };
 433       }
 434     }
 435     return null;
 436   }
 437
 438   play(move) {
 439     move.flags = JSON.stringify(this.aggregateFlags());
 440     this.epSquares.push(this.getEpSquare(move));
 441     V.PlayOnBoard(this.board, move);
 442     if (move.end.effect !== undefined) {
 443       this.firstMove.push(move);
 444       this.subTurn = 2;
 445       if (move.end.effect == 2) this.reserve = this.captured;
 446     }
 447     else {
 448       this.turn = V.GetOppCol(this.turn);
 449       this.subTurn = 1;
 450       this.reserve = null;
 451     }
 452   }
 453
 454   postPlay(move) {
 455     if (move.vanish[0].p == V.KING) { }
 456     //si roi et delta >= 2 ou dame et appear invisible queen : turn flag off
 457     if (move.vanish.length == 2 && move.vanish[1].c != 'a')
 458       // Capture: update this.captured
 459       this.captured[move.vanish[1].c][move.vanish[1].p]++;
 460     else if (move.vanish.length == 0) {
 461       // A piece is back on board
 462       this.captured[move.vanish[1].c][move.vanish[1].p]++;
 463       this.reserve = null;
 464     }
 465     // si pièce immobilisée de ma couleur : elle redevient utilisable (changer status fin de play)
 466     // TODO: un-immobilize my formerly immobilized piece, if any.
 467     // Make invisible queen visible again, if any opponent invisible queen.
 468   }
 469
 470   undo(move) {
 471     // TODO: should be easy once end.effect is set in getBasicMove()
 472     if (move.end.effect !== undefined)
 473       this.firstMove.pop();
 474   }
 475
 476   postUndo(move) {
 477     if (move.vanish.length == 2 && move.vanish[1].c != 'a')
 478       this.captured[move.vanish[1].c][move.vanish[1].p]--;
 479   }
 480
 481   getCheckSquares() {
 482     return [];
 483   }
 484
 485   getCurrentScore() {
 486     // Find kings (not tracked in this variant)
 487     let kingThere = { w: false, b: false };
 488     for (let i=0; i<8; i++) {
 489       for (let j=0; j<8; j++) {
 490         if (this.board[i][j] != V.EMPTY && this.getPiece(i, j) == V.KING)
 491           kingThere[this.getColor(i, j)] = true;
 492       }
 493     }
 494     if (!kingThere['w']) return "0-1";
 495     if (!kingThere['b']) return "1-0";
 496     return "*";
 497   }
 498
 499   static GenRandInitFen(randomness) {
 500     return (
 501       SuicideRules.GenRandInitFen(randomness).slice(0, -1) +
 502       // Add Peach + Mario flags, re-add en-passant + capture counts
 503       "0000 - 0000000000"
 504     );
 505   }
 506
 507   filterValid(moves) {
 508     return moves;
 509   }
 510
 511   getComputerMove() {
 512     // Random mover:
 513     const moves = this.getAllValidMoves();
 514     let move1 = moves[randInt(movs.length)];
 515     this.play(move1);
 516     let move2 = undefined;
 517     if (this.subTurn == 2) {
 518       const moves2 = this.getAllValidMoves();
 519       move2 = moves2[randInt(moves2.length)];
 520     }
 521     this.undo(move1);
 522     if (!move2) return move1;
 523     return [move1, move2];
 524   }
 525
 526   getNotation(move) {
 527     // TODO: invisibility used => move notation Q??
 528     // Also, bonus should be clearly indicated + bomb/bananas locations
 529     return super.getNotation(move);
 530   }
 531 };