Fix images of new pieces for Wormhole1 rules
[vchess.git] / client / src / variants / Crazyhouse.js
CommitLineData
0c3fe8a6 1import { ChessRules, PiPo, Move } from "@/base_rules";
6808d7a1 2import { ArrayFun } from "@/utils/array";
0c3fe8a6 3
32f6285e 4export class CrazyhouseRules extends ChessRules {
7e8a7ea1 5
6808d7a1
BA
6 static IsGoodFen(fen) {
7 if (!ChessRules.IsGoodFen(fen)) return false;
dac39588
BA
8 const fenParsed = V.ParseFen(fen);
9 // 5) Check reserves
10 if (!fenParsed.reserve || !fenParsed.reserve.match(/^[0-9]{10,10}$/))
11 return false;
12 // 6) Check promoted array
6808d7a1
BA
13 if (!fenParsed.promoted) return false;
14 if (fenParsed.promoted == "-") return true; //no promoted piece on board
dac39588 15 const squares = fenParsed.promoted.split(",");
6808d7a1 16 for (let square of squares) {
dac39588
BA
17 const c = V.SquareToCoords(square);
18 if (c.y < 0 || c.y > V.size.y || isNaN(c.x) || c.x < 0 || c.x > V.size.x)
19 return false;
20 }
21 return true;
22 }
2d7194bd 23
6808d7a1 24 static ParseFen(fen) {
dac39588 25 const fenParts = fen.split(" ");
6f2f9437
BA
26 return Object.assign(
27 ChessRules.ParseFen(fen),
28 {
29 reserve: fenParts[5],
30 promoted: fenParts[6]
31 }
32 );
dac39588 33 }
fb6ceeff 34
7ba4a5bc
BA
35 static GenRandInitFen(randomness) {
36 return ChessRules.GenRandInitFen(randomness) + " 0000000000 -";
dac39588 37 }
2d7194bd 38
6808d7a1
BA
39 getFen() {
40 return (
90e814b6
BA
41 super.getFen() + " " +
42 this.getReserveFen() + " " +
43 this.getPromotedFen()
6808d7a1 44 );
dac39588 45 }
2d7194bd 46
f9c36b2d
BA
47 getFenForRepeat() {
48 return (
90e814b6 49 super.getFenForRepeat() + "_" +
f9c36b2d
BA
50 this.getReserveFen() + "_" +
51 this.getPromotedFen()
52 );
53 }
54
6808d7a1 55 getReserveFen() {
dac39588 56 let counts = new Array(10);
6808d7a1
BA
57 for (
58 let i = 0;
59 i < V.PIECES.length - 1;
60 i++ //-1: no king reserve
61 ) {
dac39588 62 counts[i] = this.reserve["w"][V.PIECES[i]];
6808d7a1 63 counts[5 + i] = this.reserve["b"][V.PIECES[i]];
dac39588
BA
64 }
65 return counts.join("");
66 }
2d7194bd 67
6808d7a1 68 getPromotedFen() {
dac39588 69 let res = "";
6808d7a1
BA
70 for (let i = 0; i < V.size.x; i++) {
71 for (let j = 0; j < V.size.y; j++) {
c292ebb2 72 if (this.promoted[i][j]) res += V.CoordsToSquare({ x: i, y: j }) + ",";
dac39588
BA
73 }
74 }
c292ebb2 75 // Remove last comma:
6808d7a1 76 if (res.length > 0) res = res.slice(0, -1);
6808d7a1 77 else res = "-";
dac39588
BA
78 return res;
79 }
2d7194bd 80
6808d7a1 81 setOtherVariables(fen) {
dac39588 82 super.setOtherVariables(fen);
ded43c88 83 const fenParsed = V.ParseFen(fen);
dac39588 84 // Also init reserves (used by the interface to show landable pieces)
ded43c88 85 const reserve = fenParsed.reserve.split("").map(x => parseInt(x, 10));
6808d7a1
BA
86 this.reserve = {
87 w: {
e50a8025
BA
88 [V.PAWN]: reserve[0],
89 [V.ROOK]: reserve[1],
90 [V.KNIGHT]: reserve[2],
91 [V.BISHOP]: reserve[3],
92 [V.QUEEN]: reserve[4]
dac39588 93 },
6808d7a1 94 b: {
e50a8025
BA
95 [V.PAWN]: reserve[5],
96 [V.ROOK]: reserve[6],
97 [V.KNIGHT]: reserve[7],
98 [V.BISHOP]: reserve[8],
99 [V.QUEEN]: reserve[9]
dac39588
BA
100 }
101 };
102 this.promoted = ArrayFun.init(V.size.x, V.size.y, false);
6808d7a1
BA
103 if (fenParsed.promoted != "-") {
104 for (let square of fenParsed.promoted.split(",")) {
c292ebb2
BA
105 const coords = V.SquareToCoords(square);
106 this.promoted[coords.x][coords.y] = true;
dac39588
BA
107 }
108 }
109 }
5c42c64e 110
6808d7a1
BA
111 getColor(i, j) {
112 if (i >= V.size.x) return i == V.size.x ? "w" : "b";
dac39588
BA
113 return this.board[i][j].charAt(0);
114 }
2d7194bd 115
6808d7a1
BA
116 getPiece(i, j) {
117 if (i >= V.size.x) return V.RESERVE_PIECES[j];
dac39588
BA
118 return this.board[i][j].charAt(1);
119 }
a6abf094 120
dac39588 121 // Used by the interface:
241bf8f2 122 getReservePpath(index, color) {
dac39588
BA
123 return color + V.RESERVE_PIECES[index];
124 }
9d4a0218
BA
125// // Version if some day I have pieces with numbers printed on it:
126// getReservePpath(index, color) {
127// return (
128// "Crazyhouse/" +
129// color + V.RESERVE_PIECES[index] +
130// "_" + this.vr.reserve[playingColor][V.RESERVE_PIECES[i]]
131// );
132// }
a6abf094 133
dac39588 134 // Ordering on reserve pieces
6808d7a1
BA
135 static get RESERVE_PIECES() {
136 return [V.PAWN, V.ROOK, V.KNIGHT, V.BISHOP, V.QUEEN];
dac39588 137 }
1221ac47 138
6808d7a1 139 getReserveMoves([x, y]) {
dac39588
BA
140 const color = this.turn;
141 const p = V.RESERVE_PIECES[y];
6808d7a1 142 if (this.reserve[color][p] == 0) return [];
dac39588 143 let moves = [];
6808d7a1
BA
144 const pawnShift = p == V.PAWN ? 1 : 0;
145 for (let i = pawnShift; i < V.size.x - pawnShift; i++) {
146 for (let j = 0; j < V.size.y; j++) {
147 if (this.board[i][j] == V.EMPTY) {
dac39588
BA
148 let mv = new Move({
149 appear: [
150 new PiPo({
151 x: i,
152 y: j,
153 c: color,
154 p: p
155 })
156 ],
157 vanish: [],
6808d7a1
BA
158 start: { x: x, y: y }, //a bit artificial...
159 end: { x: i, y: j }
dac39588
BA
160 });
161 moves.push(mv);
162 }
163 }
164 }
165 return moves;
166 }
a6abf094 167
6808d7a1 168 getPotentialMovesFrom([x, y]) {
1e8a8386 169 if (x >= V.size.x)
dac39588 170 // Reserves, outside of board: x == sizeX(+1)
6808d7a1 171 return this.getReserveMoves([x, y]);
dac39588 172 // Standard moves
6808d7a1 173 return super.getPotentialMovesFrom([x, y]);
dac39588 174 }
a6abf094 175
6808d7a1 176 getAllValidMoves() {
0e001022 177 let moves = super.getAllPotentialMoves();
dac39588 178 const color = this.turn;
0e001022 179 for (let i = 0; i < V.RESERVE_PIECES.length; i++) {
6808d7a1
BA
180 moves = moves.concat(
181 this.getReserveMoves([V.size.x + (color == "w" ? 0 : 1), i])
182 );
0e001022 183 }
dac39588
BA
184 return this.filterValid(moves);
185 }
a6abf094 186
6808d7a1 187 atLeastOneMove() {
d982fffc
BA
188 if (super.atLeastOneMove()) return true;
189 // Search one reserve move
190 for (let i = 0; i < V.RESERVE_PIECES.length; i++) {
191 const moves = this.filterValid(
192 this.getReserveMoves([V.size.x + (this.turn == "w" ? 0 : 1), i])
193 );
194 if (moves.length > 0) return true;
dac39588 195 }
d982fffc 196 return false;
dac39588 197 }
a6abf094 198
3a2a7b5f
BA
199 postPlay(move) {
200 super.postPlay(move);
2c5d7b20
BA
201 // Skip castle:
202 if (move.vanish.length == 2 && move.appear.length == 2) return;
dac39588 203 const color = move.appear[0].c;
6808d7a1 204 if (move.vanish.length == 0) {
dac39588
BA
205 this.reserve[color][move.appear[0].p]--;
206 return;
207 }
208 move.movePromoted = this.promoted[move.start.x][move.start.y];
6808d7a1 209 move.capturePromoted = this.promoted[move.end.x][move.end.y];
dac39588 210 this.promoted[move.start.x][move.start.y] = false;
6808d7a1
BA
211 this.promoted[move.end.x][move.end.y] =
212 move.movePromoted ||
213 (move.vanish[0].p == V.PAWN && move.appear[0].p != V.PAWN);
214 if (move.capturePromoted) this.reserve[color][V.PAWN]++;
215 else if (move.vanish.length == 2) this.reserve[color][move.vanish[1].p]++;
dac39588 216 }
1221ac47 217
3a2a7b5f
BA
218 postUndo(move) {
219 super.postUndo(move);
6808d7a1 220 if (move.vanish.length == 2 && move.appear.length == 2) return;
dac39588 221 const color = this.turn;
6808d7a1 222 if (move.vanish.length == 0) {
dac39588
BA
223 this.reserve[color][move.appear[0].p]++;
224 return;
225 }
6808d7a1 226 if (move.movePromoted) this.promoted[move.start.x][move.start.y] = true;
dac39588 227 this.promoted[move.end.x][move.end.y] = move.capturePromoted;
6808d7a1
BA
228 if (move.capturePromoted) this.reserve[color][V.PAWN]--;
229 else if (move.vanish.length == 2) this.reserve[color][move.vanish[1].p]--;
dac39588 230 }
a6abf094 231
6808d7a1
BA
232 static get SEARCH_DEPTH() {
233 return 2;
78d64531 234 }
a6abf094 235
6808d7a1 236 evalPosition() {
dac39588
BA
237 let evaluation = super.evalPosition();
238 // Add reserves:
6808d7a1 239 for (let i = 0; i < V.RESERVE_PIECES.length; i++) {
dac39588
BA
240 const p = V.RESERVE_PIECES[i];
241 evaluation += this.reserve["w"][p] * V.VALUES[p];
242 evaluation -= this.reserve["b"][p] * V.VALUES[p];
243 }
244 return evaluation;
245 }
6752407b 246
6808d7a1
BA
247 getNotation(move) {
248 if (move.vanish.length > 0) return super.getNotation(move);
dac39588
BA
249 // Rebirth:
250 const piece =
6808d7a1 251 move.appear[0].p != V.PAWN ? move.appear[0].p.toUpperCase() : "";
dac39588
BA
252 return piece + "@" + V.CoordsToSquare(move.end);
253 }
7e8a7ea1 254
6808d7a1 255};