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737a5daf BA |
1 | import { ChessRules } from "@/base_rules"; |
2 | ||
3 | export class KnightpawnsRules extends ChessRules { | |
7e8a7ea1 | 4 | |
4313762d BA |
5 | static get Options() { |
6 | return null; | |
7 | } | |
8 | ||
737a5daf BA |
9 | static get PawnSpecs() { |
10 | return Object.assign( | |
11 | {}, | |
12 | ChessRules.PawnSpecs, | |
13 | // The promotion piece doesn't matter, the game is won | |
14 | { promotions: [V.QUEEN] } | |
15 | ); | |
16 | } | |
17 | ||
18 | static get HasFlags() { | |
19 | return false; | |
20 | } | |
21 | ||
22 | scanKings() {} | |
23 | ||
24 | static GenRandInitFen() { | |
25 | return "8/ppp5/8/8/8/8/8/6N1 w 0 -"; | |
26 | } | |
27 | ||
28 | filterValid(moves) { | |
29 | return moves; | |
30 | } | |
31 | ||
32 | getCheckSquares() { | |
33 | return []; | |
34 | } | |
35 | ||
36 | getCurrentScore() { | |
37 | // If all pieces of some color vanished, the opponent wins: | |
38 | for (let c of ['w', 'b']) { | |
39 | if (this.board.every(b => b.every(cell => !cell || cell[0] != c))) | |
40 | return (c == 'w' ? "0-1" : "1-0"); | |
41 | } | |
9f88188c | 42 | // Did a black pawn promote? Can the knight take it? |
737a5daf | 43 | const qIdx = this.board[7].findIndex(cell => cell[1] == V.QUEEN); |
9f88188c BA |
44 | if ( |
45 | qIdx >= 0 && | |
46 | (this.turn == 'b' || !super.isAttackedByKnight([7, qIdx], 'w')) | |
47 | ) { | |
737a5daf | 48 | return "0-1"; |
9f88188c | 49 | } |
737a5daf BA |
50 | if (!this.atLeastOneMove()) return "1/2"; |
51 | return "*"; | |
52 | } | |
53 | ||
54 | postPlay() {} | |
55 | postUndo() {} | |
7e8a7ea1 | 56 | |
737a5daf | 57 | }; |