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c322a844 BA |
1 | import { ChessRules } from "@/base_rules"; |
2 | ||
3 | export const VariantRules = class KnightrelayRules extends ChessRules { | |
4 | getPotentialMovesFrom([x, y]) { | |
5 | let moves = super.getPotentialMovesFrom([x, y]); | |
6 | ||
7 | // Expand possible moves if guarded by a knight: | |
8 | if (this.getPiece(x,y) != V.KNIGHT) { | |
9 | const color = this.turn; | |
10 | let guardedByKnight = false; | |
11 | for (const step of V.steps[V.KNIGHT]) { | |
12 | if ( | |
13 | V.OnBoard(x+step[0],y+step[1]) && | |
14 | this.getPiece(x+step[0],y+step[1]) == V.KNIGHT && | |
15 | this.getColor(x+step[0],y+step[1]) == color | |
16 | ) { | |
17 | guardedByKnight = true; | |
18 | break; | |
19 | } | |
20 | } | |
21 | if (guardedByKnight) { | |
22 | for (const step of V.steps[V.KNIGHT]) { | |
23 | if ( | |
24 | V.OnBoard(x+step[0],y+step[1]) && | |
25 | this.getColor(x+step[0],y+step[1]) != color | |
26 | ) { | |
27 | let m = this.getBasicMove([x,y], [x+step[0],y+step[1]]); | |
28 | if (!m.appear[0].c || !m.vanish[0].c) | |
29 | debugger; | |
30 | moves.push(m); | |
31 | //moves.push(this.getBasicMove([x,y], [x+step[0],y+step[1]])); | |
32 | } | |
33 | } | |
34 | } | |
35 | } | |
36 | ||
37 | return moves; | |
38 | } | |
39 | ||
40 | getNotation(move) { | |
41 | if (move.appear.length == 2 && move.appear[0].p == V.KING) | |
42 | // Castle | |
43 | return move.end.y < move.start.y ? "0-0-0" : "0-0"; | |
44 | ||
45 | // Translate final and initial square | |
46 | const initSquare = V.CoordsToSquare(move.start); | |
47 | const finalSquare = V.CoordsToSquare(move.end); | |
48 | const piece = this.getPiece(move.start.x, move.start.y); | |
49 | ||
50 | // Since pieces and pawns could move like knight, indicate start and end squares | |
51 | let notation = | |
52 | piece.toUpperCase() + | |
53 | initSquare + | |
54 | (move.vanish.length > move.appear.length ? "x" : "") + | |
55 | finalSquare | |
56 | ||
57 | if ( | |
58 | piece == V.PAWN && | |
59 | move.appear.length > 0 && | |
60 | move.appear[0].p != V.PAWN | |
61 | ) { | |
62 | // Promotion | |
63 | notation += "=" + move.appear[0].p.toUpperCase(); | |
64 | } | |
65 | ||
66 | return notation; | |
67 | } | |
68 | }; |