Commit | Line | Data |
---|---|---|
107dc1bd BA |
1 | import { ChessRules } from "@/base_rules"; |
2 | ||
3 | export class MadrasiRules extends ChessRules { | |
7e8a7ea1 | 4 | |
107dc1bd | 5 | isImmobilized(sq) { |
c6624915 | 6 | const oppCol = V.GetOppCol(this.getColor(sq[0], sq[1])); |
107dc1bd BA |
7 | const piece = this.getPiece(sq[0], sq[1]); |
8 | let steps = []; | |
9 | switch (piece) { | |
10 | // NOTE: cannot use super.isAttackedByXXX | |
11 | // because it would call the redefined isAttackedBySlideNJump | |
12 | // => Infinite recursive calls. | |
13 | case V.PAWN: { | |
14 | const forward = (oppCol == 'w' ? 1 : -1); | |
15 | steps = [[forward, 1], [forward, -1]]; | |
16 | break; | |
17 | } | |
18 | case V.ROOK: | |
19 | case V.BISHOP: | |
20 | case V.KNIGHT: | |
21 | steps = V.steps[piece]; | |
22 | break; | |
23 | case V.KING: | |
24 | case V.QUEEN: | |
25 | steps = V.steps[V.ROOK].concat(V.steps[V.BISHOP]); | |
26 | break; | |
27 | } | |
4313762d BA |
28 | const nbSteps = [V.KING, V.PAWN, V.KNIGHT].includes(piece) ? 1 : null; |
29 | return super.isAttackedBySlideNJump(sq, oppCol, piece, steps, nbSteps); | |
107dc1bd BA |
30 | } |
31 | ||
32 | getPotentialMovesFrom([x, y]) { | |
33 | return ( | |
34 | !this.isImmobilized([x, y]) | |
35 | ? super.getPotentialMovesFrom([x, y]) | |
36 | : [] | |
37 | ); | |
38 | } | |
39 | ||
40 | isAttackedBySlideNJump([x, y], color, piece, steps, oneStep) { | |
41 | for (let step of steps) { | |
42 | let rx = x + step[0], | |
43 | ry = y + step[1]; | |
44 | while (V.OnBoard(rx, ry) && this.board[rx][ry] == V.EMPTY && !oneStep) { | |
45 | rx += step[0]; | |
46 | ry += step[1]; | |
47 | } | |
48 | if ( | |
49 | V.OnBoard(rx, ry) && | |
50 | this.getPiece(rx, ry) == piece && | |
51 | this.getColor(rx, ry) == color && | |
52 | // If enemy is immobilized, it doesn't attack: | |
53 | !this.isImmobilized([rx, ry]) | |
54 | ) { | |
55 | return true; | |
56 | } | |
57 | } | |
58 | return false; | |
59 | } | |
60 | ||
61 | isAttackedByKing() { | |
62 | // Connected kings paralyze each other | |
63 | return false; | |
64 | } | |
7e8a7ea1 | 65 | |
107dc1bd | 66 | }; |