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9d15c433 BA |
1 | import { ChessRules } from "@/base_rules"; |
2 | import { Synchrone1Rules } from "@/variants/Synchrone1"; | |
3 | import { randInt } from "@/utils/alea"; | |
4 | ||
5 | export class Synchrone2Rules extends Synchrone1Rules { | |
6 | ||
7 | static get CanAnalyze() { | |
8 | return true;//false; | |
9 | } | |
10 | ||
11 | static get HasEnpassant() { | |
12 | return false; | |
13 | } | |
14 | ||
15 | static IsGoodFen(fen) { | |
16 | if (!Synchrone1Rules.IsGoodFen(fen)) return false; | |
17 | const fenParsed = V.ParseFen(fen); | |
18 | // 5) Check initFen (not really... TODO?) | |
19 | if (!fenParsed.initFen || fenParsed.initFen == "-") return false; | |
20 | return true; | |
21 | } | |
22 | ||
23 | static ParseFen(fen) { | |
24 | const fenParts = fen.split(" "); | |
25 | return Object.assign( | |
26 | { | |
27 | initFen: fenParts[4], | |
28 | whiteMove: fenParts[5] | |
29 | }, | |
30 | ChessRules.ParseFen(fen) | |
31 | ); | |
32 | } | |
33 | ||
34 | getInitfenFen() { | |
35 | if (!this.whiteMove) return "-"; | |
36 | return JSON.stringify({ | |
37 | start: this.whiteMove.start, | |
38 | end: this.whiteMove.end, | |
39 | appear: this.whiteMove.appear, | |
40 | vanish: this.whiteMove.vanish | |
41 | }); | |
42 | } | |
43 | ||
44 | getFen() { | |
45 | return ( | |
46 | super.getFen() + " " + | |
47 | this.getInitfenFen() + " " + | |
48 | this.getWhitemoveFen() | |
49 | ); | |
50 | } | |
51 | ||
52 | static GenRandInitFen(randomness) { | |
53 | const res = ChessRules.GenRandInitFen(randomness); | |
54 | // Add initFen field: | |
55 | return res.slice(0, -1) + " " + res.split(' ')[1] + " -"; | |
56 | } | |
57 | ||
58 | setOtherVariables(fen) { | |
59 | const parsedFen = V.ParseFen(fen); | |
60 | this.setFlags(parsedFen.flags); | |
61 | super.scanKings(fen); | |
62 | // Also init whiteMove | |
63 | this.whiteMove = | |
64 | parsedFen.whiteMove != "-" | |
65 | ? JSON.parse(parsedFen.whiteMove) | |
66 | : null; | |
67 | // And initFen (not empty) | |
68 | this.initFen = parsedFen.initFen; | |
69 | } | |
70 | ||
71 | getPotentialMovesFrom([x, y]) { | |
72 | if (this.movesCount % 4 <= 1) return super.getPotentialMovesFrom([x, y]); | |
73 | // TODO: either add a "blackMove' field in FEN (bof...), | |
74 | // or write an helper function to detect from diff positions, | |
75 | // which piece moved (if not disappeared!), which moves are valid. | |
76 | // + do not forget pass move (king 2 king): always possible at stage 2. | |
77 | return []; | |
78 | } | |
79 | ||
80 | play(move) { | |
81 | move.flags = JSON.stringify(this.aggregateFlags()); | |
82 | // Do not play on board (would reveal the move...) | |
83 | this.turn = V.GetOppCol(this.turn); | |
84 | this.movesCount++; | |
85 | this.postPlay(move); | |
86 | } | |
87 | ||
88 | undo(move) { | |
89 | this.disaggregateFlags(JSON.parse(move.flags)); | |
90 | if (this.turn == 'w') | |
91 | // Back to the middle of the move | |
92 | V.UndoOnBoard(this.board, move.smove); | |
93 | this.turn = V.GetOppCol(this.turn); | |
94 | this.movesCount--; | |
95 | this.postUndo(move); | |
96 | } | |
97 | ||
98 | getCurrentScore() { | |
99 | if (this.movesCount % 4 != 0) | |
100 | // Turn (2 x white + black) not over yet | |
101 | return "*"; | |
102 | // Was a king captured? | |
103 | if (this.kingPos['w'][0] < 0) return "0-1"; | |
104 | if (this.kingPos['b'][0] < 0) return "1-0"; | |
105 | const whiteCanMove = this.atLeastOneMove('w'); | |
106 | const blackCanMove = this.atLeastOneMove('b'); | |
107 | if (whiteCanMove && blackCanMove) return "*"; | |
108 | // Game over | |
109 | const whiteInCheck = this.underCheck('w'); | |
110 | const blackInCheck = this.underCheck('b'); | |
111 | if ( | |
112 | (whiteCanMove && !this.underCheck('b')) || | |
113 | (blackCanMove && !this.underCheck('w')) | |
114 | ) { | |
115 | return "1/2"; | |
116 | } | |
117 | // Checkmate: could be mutual | |
118 | if (!whiteCanMove && !blackCanMove) return "1/2"; | |
119 | return (whiteCanMove ? "1-0" : "0-1"); | |
120 | } | |
121 | ||
122 | }; |