a0408b0287c0e3f87183a5de7d984419a40dbc36
1 import { Cannibal1Rules
} from "@/variants/Cannibal1";
3 export class Cannibal2Rules
extends Cannibal1Rules
{
5 // Trim all non-capturing moves
6 static KeepCaptures(moves
) {
7 return moves
.filter(m
=> m
.vanish
.length
== 2 && m
.appear
.length
== 1);
10 // Stop at the first capture found (if any)
12 const color
= this.turn
;
13 const oppCol
= V
.GetOppCol(color
);
14 for (let i
= 0; i
< V
.size
.x
; i
++) {
15 for (let j
= 0; j
< V
.size
.y
; j
++) {
17 this.board
[i
][j
] != V
.EMPTY
&&
18 this.getColor(i
, j
) != oppCol
&&
19 this.filterValid(this.getPotentialMovesFrom([i
, j
])).some(m
=>
20 // Warning: discard castle moves
21 m
.vanish
.length
== 2 && m
.appear
.length
== 1)
30 addPawnMoves([x1
, y1
], [x2
, y2
], moves
) {
31 let finalPieces
= [V
.PAWN
];
32 const color
= this.turn
;
33 const lastRank
= (color
== "w" ? 0 : V
.size
.x
- 1);
35 if (this.board
[x2
][y2
] != V
.EMPTY
)
36 // Cannibal rules: no choice if capture
37 finalPieces
= [this.getPiece(x2
, y2
)];
38 else finalPieces
= V
.PawnSpecs
.promotions
;
41 for (let piece
of finalPieces
) {
42 tr
= (piece
!= V
.PAWN
? { c: color
, p: piece
} : null);
43 moves
.push(this.getBasicMove([x1
, y1
], [x2
, y2
], tr
));
47 getPossibleMovesFrom(sq
) {
48 let moves
= this.filterValid(this.getPotentialMovesFrom(sq
));
49 const captureMoves
= V
.KeepCaptures(moves
);
50 if (captureMoves
.length
> 0) return captureMoves
;
51 if (this.atLeastOneCapture()) return [];
56 const moves
= super.getAllValidMoves();
57 if (moves
.some(m
=> m
.vanish
.length
== 2 && m
.appear
.length
== 1))
58 return V
.KeepCaptures(moves
);