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1 | import { ChessRules } from "@/base_rules"; |
2 | ||
32f6285e | 3 | export class ArenaRules extends ChessRules { |
7e8a7ea1 | 4 | |
4313762d BA |
5 | static get Lines() { |
6 | return [ | |
7 | [[2, 0], [2, 8]], | |
8 | [[6, 0], [6, 8]] | |
9 | ]; | |
10 | } | |
11 | ||
3a2a7b5f | 12 | static get HasFlags() { |
c3a86f01 BA |
13 | return false; |
14 | } | |
15 | ||
32f6285e BA |
16 | static get PawnSpecs() { |
17 | return Object.assign( | |
18 | {}, | |
19 | ChessRules.PawnSpecs, | |
20 | { captureBackward: true } | |
21 | ); | |
22 | } | |
23 | ||
6f2f9437 BA |
24 | static IsGoodPosition(position) { |
25 | if (position.length == 0) return false; | |
26 | const rows = position.split("/"); | |
27 | if (rows.length != V.size.x) return false; | |
28 | // At most and at least one king or queen per color | |
29 | let royals = { "k": 0, "K": 0, "q": 0, "Q": 0 }; | |
30 | for (let row of rows) { | |
31 | let sumElts = 0; | |
32 | for (let i = 0; i < row.length; i++) { | |
33 | if (['K','k','Q','q'].includes(row[i])) royals[row[i]]++; | |
34 | if (V.PIECES.includes(row[i].toLowerCase())) sumElts++; | |
35 | else { | |
e50a8025 | 36 | const num = parseInt(row[i], 10); |
6f2f9437 BA |
37 | if (isNaN(num)) return false; |
38 | sumElts += num; | |
39 | } | |
40 | } | |
41 | if (sumElts != V.size.y) return false; | |
42 | } | |
43 | if ( | |
44 | Object.values(royals).some(v => v >= 2) || | |
45 | royals['K'] + royals['Q'] == 0 || | |
46 | royals['k'] + royals['q'] == 0 | |
47 | ) { | |
48 | return false; | |
49 | } | |
50 | return true; | |
51 | } | |
52 | ||
53 | scanKings() {} | |
54 | ||
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55 | static GenRandInitFen(options) { |
56 | return ChessRules.GenRandInitFen(options).slice(0, -6) + "-"; | |
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57 | } |
58 | ||
59 | static InArena(x) { | |
60 | return Math.abs(3.5 - x) <= 1.5; | |
61 | } | |
62 | ||
63 | getPotentialMovesFrom([x, y]) { | |
64 | const moves = super.getPotentialMovesFrom([x, y]); | |
65 | // Eliminate moves which neither enter the arena or capture something | |
66 | return moves.filter(m => { | |
67 | const startInArena = V.InArena(m.start.x); | |
68 | const endInArena = V.InArena(m.end.x); | |
69 | return ( | |
70 | (startInArena && endInArena && m.vanish.length == 2) || | |
71 | (!startInArena && endInArena) | |
72 | ); | |
73 | }); | |
74 | ||
75 | return moves; | |
76 | } | |
77 | ||
c3a86f01 | 78 | getPotentialQueenMoves(sq) { |
4313762d BA |
79 | return super.getSlideNJumpMoves( |
80 | sq, V.steps[V.ROOK].concat(V.steps[V.BISHOP]), 3); | |
c3a86f01 BA |
81 | } |
82 | ||
83 | getPotentialKingMoves(sq) { | |
4313762d BA |
84 | return super.getSlideNJumpMoves( |
85 | sq, V.steps[V.ROOK].concat(V.steps[V.BISHOP]), 3); | |
c3a86f01 BA |
86 | } |
87 | ||
88 | getCheckSquares() { | |
89 | return []; | |
90 | } | |
91 | ||
92 | filterValid(moves) { | |
93 | // No check conditions | |
94 | return moves; | |
95 | } | |
96 | ||
57d9b2c4 BA |
97 | postPlay() {} //no kingPos no castleFlags |
98 | postUndo() {} | |
99 | ||
c3a86f01 BA |
100 | getCurrentScore() { |
101 | const color = this.turn; | |
102 | if (!this.atLeastOneMove()) | |
103 | // I cannot move anymore | |
104 | return color == "w" ? "0-1" : "1-0"; | |
105 | // Win if the opponent has no more pieces left (in the Arena), | |
106 | // (and/)or if he lost both his dukes. | |
107 | let someUnitRemain = false; | |
108 | let atLeastOneDuke = false; | |
109 | let somethingInArena = false; | |
110 | outerLoop: for (let i=0; i<V.size.x; i++) { | |
111 | for (let j=0; j<V.size.y; j++) { | |
112 | if (this.getColor(i,j) == color) { | |
113 | someUnitRemain = true; | |
114 | if (this.movesCount >= 2 && V.InArena(i)) { | |
115 | somethingInArena = true; | |
116 | if (atLeastOneDuke) | |
117 | break outerLoop; | |
118 | } | |
119 | if ([V.QUEEN,V.KING].includes(this.getPiece(i,j))) { | |
120 | atLeastOneDuke = true; | |
121 | if (this.movesCount < 2 || somethingInArena) | |
122 | break outerLoop; | |
123 | } | |
124 | } | |
125 | } | |
126 | } | |
127 | if ( | |
128 | !someUnitRemain || | |
129 | !atLeastOneDuke || | |
130 | (this.movesCount >= 2 && !somethingInArena) | |
131 | ) { | |
132 | return color == "w" ? "0-1" : "1-0"; | |
133 | } | |
134 | return "*"; | |
135 | } | |
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136 | |
137 | static get SEARCH_DEPTH() { | |
138 | return 4; | |
139 | } | |
7e8a7ea1 | 140 | |
c3a86f01 | 141 | }; |