Fix last refactoring. Ready to add variants
[xogo.git] / variants / Giveaway / class.js
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1import ChessRules from "/base_rules.js";
2import { ArrayFun } from "/utils/array.js";
3import { Random } from "/utils/alea.js";
4
5export default class GiveawayRules extends ChessRules {
6
7 static get Options() {
8 return {
9 select: [
10 {
11 label: "Mode",
12 variable: "mode",
13 defaut: "suicide",
14 options: [
15 {label: "Suicide", value: "suicide"},
16 {label: "Losers", value: "losers"}
17 ]
18 }
19 ].concat(C.Options.select),
20 input: C.Options.input.filter(i => i.variable == "pawnfall"),
21 styles: [
22 "atomic", "cannibal", "cylinder", "dark",
23 "madrasi", "rifle", "teleport", "zen"
24 ]
25 };
26 }
27
28 get hasFlags() {
29 return this.options["mode"] == "losers";
30 }
31
32 get pawnPromotions() {
33 let res = ['q', 'r', 'n', 'b'];
34 if (this.options["mode"] == "suicide")
35 res.push('k');
36 return res;
37 }
38
39 genRandInitFen(seed) {
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BA
40 if (this.options["mode"] == "losers")
41 return super.genRandInitFen(seed);
42
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43 if (this.options["randomness"] == 0) {
44 return (
45 'rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w 0 {"enpassant":"-"}'
46 );
47 }
48
49 Random.setSeed(seed);
50 let pieces = { w: new Array(8), b: new Array(8) };
51 for (let c of ["w", "b"]) {
52 if (c == 'b' && this.options["randomness"] == 1) {
53 pieces['b'] = pieces['w'];
54 break;
55 }
56
57 // Get random squares for every piece, totally freely
58 let positions = Random.shuffle(ArrayFun.range(8));
59 const composition = ['b', 'b', 'r', 'r', 'n', 'n', 'k', 'q'];
60 const rem2 = positions[0] % 2;
61 if (rem2 == positions[1] % 2) {
62 // Fix bishops (on different colors)
63 for (let i=2; i<8; i++) {
64 if (positions[i] % 2 != rem2) {
65 [positions[1], positions[i]] = [positions[i], positions[1]];
66 break;
67 }
68 }
69 }
70 for (let i = 0; i < 8; i++)
71 pieces[c][positions[i]] = composition[i];
72 }
73 return (
74 pieces["b"].join("") +
75 "/pppppppp/8/8/8/8/PPPPPPPP/" +
76 pieces["w"].join("").toUpperCase() +
77 // En-passant allowed, but no flags
78 ' w 0 {"enpassant":"-"}'
79 );
80 }
81
82 constructor(o) {
83 o.options["capture"] = true;
84 super(o);
85 }
86
87 underCheck([x, y], oppCol) {
88 if (this.options["mode"] == "suicide")
89 return false;
90 return super.underCheck([x, y], oppCol);
91 }
92
93 getCurrentScore() {
94 if (this.atLeastOneMove()) return "*";
95 // No valid move: the side who cannot move wins
96 return (this.turn == "w" ? "1-0" : "0-1");
97 }
98
99};