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a6abf094 BA |
1 | class CrazyhouseRules extends ChessRules |
2 | { | |
3 | initVariables(fen) | |
4 | { | |
1221ac47 | 5 | super.initVariables(fen); |
a6abf094 | 6 | // Also init reserves (used by the interface to show landing pieces) |
a6abf094 BA |
7 | this.reserve = |
8 | { | |
9 | "w": | |
10 | { | |
11 | [V.PAWN]: 0, | |
12 | [V.ROOK]: 0, | |
13 | [V.KNIGHT]: 0, | |
14 | [V.BISHOP]: 0, | |
15 | [V.QUEEN]: 0, | |
16 | }, | |
17 | "b": | |
18 | { | |
19 | [V.PAWN]: 0, | |
20 | [V.ROOK]: 0, | |
21 | [V.KNIGHT]: 0, | |
22 | [V.BISHOP]: 0, | |
23 | [V.QUEEN]: 0, | |
24 | } | |
25 | }; | |
0b7d99ec | 26 | this.promoted = doubleArray(V.size.x, V.size.y, false); |
6752407b BA |
27 | // May be a continuation: adjust numbers of pieces in reserve + promoted pieces |
28 | this.moves.forEach(m => { this.updateVariables(m); }); | |
5c42c64e BA |
29 | } |
30 | ||
31 | getColor(i,j) | |
32 | { | |
0b7d99ec BA |
33 | if (i >= V.size.x) |
34 | return (i==V.size.x ? "w" : "b"); | |
5c42c64e BA |
35 | return this.board[i][j].charAt(0); |
36 | } | |
37 | getPiece(i,j) | |
38 | { | |
0b7d99ec BA |
39 | if (i >= V.size.x) |
40 | return V.RESERVE_PIECES[j]; | |
5c42c64e | 41 | return this.board[i][j].charAt(1); |
a6abf094 BA |
42 | } |
43 | ||
44 | // Used by the interface: | |
1221ac47 | 45 | getReservePpath(color, index) |
a6abf094 | 46 | { |
0b7d99ec | 47 | return color + V.RESERVE_PIECES[index]; |
a6abf094 BA |
48 | } |
49 | ||
92342261 | 50 | // Ordering on reserve pieces |
1221ac47 | 51 | static get RESERVE_PIECES() { |
1221ac47 BA |
52 | return [V.PAWN,V.ROOK,V.KNIGHT,V.BISHOP,V.QUEEN]; |
53 | } | |
54 | ||
55 | getReserveMoves([x,y]) | |
a6abf094 | 56 | { |
a6abf094 | 57 | const color = this.turn; |
0b7d99ec | 58 | const p = V.RESERVE_PIECES[y]; |
1221ac47 BA |
59 | if (this.reserve[color][p] == 0) |
60 | return []; | |
61 | let moves = []; | |
0b7d99ec BA |
62 | const pawnShift = (p==V.PAWN ? 1 : 0); |
63 | for (let i=pawnShift; i<V.size.x-pawnShift; i++) | |
1221ac47 | 64 | { |
0b7d99ec | 65 | for (let j=0; j<V.size.y; j++) |
1221ac47 | 66 | { |
0b7d99ec | 67 | if (this.board[i][j] == V.EMPTY) |
1221ac47 BA |
68 | { |
69 | let mv = new Move({ | |
70 | appear: [ | |
71 | new PiPo({ | |
72 | x: i, | |
73 | y: j, | |
74 | c: color, | |
75 | p: p | |
76 | }) | |
5c42c64e BA |
77 | ], |
78 | vanish: [], | |
6752407b | 79 | start: {x:x, y:y}, //a bit artificial... |
5c42c64e | 80 | end: {x:i, y:j} |
1221ac47 BA |
81 | }); |
82 | moves.push(mv); | |
83 | } | |
84 | } | |
85 | } | |
a6abf094 BA |
86 | return moves; |
87 | } | |
88 | ||
1221ac47 | 89 | getPotentialMovesFrom([x,y]) |
a6abf094 | 90 | { |
0b7d99ec | 91 | if (x >= V.size.x) |
6752407b | 92 | { |
92342261 | 93 | // Reserves, outside of board: x == sizeX(+1) |
6752407b BA |
94 | return this.getReserveMoves([x,y]); |
95 | } | |
96 | // Standard moves | |
97 | return super.getPotentialMovesFrom([x,y]); | |
a6abf094 BA |
98 | } |
99 | ||
a6abf094 BA |
100 | getAllValidMoves() |
101 | { | |
1221ac47 BA |
102 | let moves = super.getAllValidMoves(); |
103 | const color = this.turn; | |
0b7d99ec BA |
104 | for (let i=0; i<V.RESERVE_PIECES.length; i++) |
105 | moves = moves.concat(this.getReserveMoves([V.size.x+(color=="w"?0:1),i])); | |
1221ac47 | 106 | return this.filterValid(moves); |
a6abf094 BA |
107 | } |
108 | ||
a6abf094 BA |
109 | atLeastOneMove() |
110 | { | |
1221ac47 BA |
111 | if (!super.atLeastOneMove()) |
112 | { | |
0b7d99ec BA |
113 | const color = this.turn; |
114 | // Search one reserve move | |
115 | for (let i=0; i<V.RESERVE_PIECES.length; i++) | |
1221ac47 | 116 | { |
0b7d99ec BA |
117 | let moves = this.filterValid( |
118 | this.getReserveMoves([V.size.x+(this.turn=="w"?0:1), i]) ); | |
1221ac47 BA |
119 | if (moves.length > 0) |
120 | return true; | |
121 | } | |
122 | return false; | |
123 | } | |
124 | return true; | |
a6abf094 BA |
125 | } |
126 | ||
a6abf094 BA |
127 | updateVariables(move) |
128 | { | |
1221ac47 | 129 | super.updateVariables(move); |
6752407b BA |
130 | if (move.vanish.length == 2 && move.appear.length == 2) |
131 | return; //skip castle | |
1221ac47 | 132 | const color = this.turn; |
6752407b | 133 | if (move.vanish.length == 0) |
6752407b | 134 | { |
8a60cacd BA |
135 | this.reserve[color][move.appear[0].p]--; |
136 | return; | |
6752407b | 137 | } |
8a60cacd BA |
138 | move.movePromoted = this.promoted[move.start.x][move.start.y]; |
139 | move.capturePromoted = this.promoted[move.end.x][move.end.y] | |
140 | this.promoted[move.start.x][move.start.y] = false; | |
141 | this.promoted[move.end.x][move.end.y] = move.movePromoted | |
142 | || (move.vanish[0].p == V.PAWN && move.appear[0].p != V.PAWN); | |
143 | if (move.capturePromoted) | |
0b7d99ec | 144 | this.reserve[color][V.PAWN]++; |
8a60cacd BA |
145 | else if (move.vanish.length == 2) |
146 | this.reserve[color][move.vanish[1].p]++; | |
a6abf094 | 147 | } |
1221ac47 | 148 | |
a6abf094 BA |
149 | unupdateVariables(move) |
150 | { | |
1221ac47 | 151 | super.unupdateVariables(move); |
8a60cacd BA |
152 | if (move.vanish.length == 2 && move.appear.length == 2) |
153 | return; | |
1221ac47 | 154 | const color = this.turn; |
6752407b | 155 | if (move.vanish.length == 0) |
6752407b | 156 | { |
8a60cacd BA |
157 | this.reserve[color][move.appear[0].p]++; |
158 | return; | |
6752407b | 159 | } |
8a60cacd BA |
160 | if (move.movePromoted) |
161 | this.promoted[move.start.x][move.start.y] = true; | |
162 | this.promoted[move.end.x][move.end.y] = move.capturePromoted; | |
163 | if (move.capturePromoted) | |
0b7d99ec | 164 | this.reserve[color][V.PAWN]--; |
8a60cacd BA |
165 | else if (move.vanish.length == 2) |
166 | this.reserve[color][move.vanish[1].p]--; | |
a6abf094 BA |
167 | } |
168 | ||
169 | static get SEARCH_DEPTH() { return 2; } //high branching factor | |
170 | ||
6752407b BA |
171 | evalPosition() |
172 | { | |
173 | let evaluation = super.evalPosition(); | |
174 | // Add reserves: | |
0b7d99ec | 175 | for (let i=0; i<V.RESERVE_PIECES.length; i++) |
6752407b | 176 | { |
0b7d99ec BA |
177 | const p = V.RESERVE_PIECES[i]; |
178 | evaluation += this.reserve["w"][p] * V.VALUES[p]; | |
179 | evaluation -= this.reserve["b"][p] * V.VALUES[p]; | |
6752407b BA |
180 | } |
181 | return evaluation; | |
182 | } | |
183 | ||
a6abf094 BA |
184 | getNotation(move) |
185 | { | |
186 | if (move.vanish.length > 0) | |
187 | return super.getNotation(move); | |
188 | // Rebirth: | |
189 | const piece = | |
0b7d99ec | 190 | (move.appear[0].p != V.PAWN ? move.appear[0].p.toUpperCase() : ""); |
a6abf094 | 191 | const finalSquare = |
0b7d99ec | 192 | String.fromCharCode(97 + move.end.y) + (V.size.x-move.end.x); |
a6abf094 BA |
193 | return piece + "@" + finalSquare; |
194 | } | |
6752407b BA |
195 | |
196 | getLongNotation(move) | |
197 | { | |
198 | if (move.vanish.length > 0) | |
199 | return super.getLongNotation(move); | |
200 | const finalSquare = | |
0b7d99ec | 201 | String.fromCharCode(97 + move.end.y) + (V.size.x-move.end.x); |
6752407b BA |
202 | return "@" + finalSquare; |
203 | } | |
a6abf094 | 204 | } |