variants/Cwda/class.js

   1 import ChessRules from "/base_rules.js";
   2 import {FenUtil} from "/utils/setupPieces.js"
   3
   4 export default class CwdaRules extends ChessRules {
   5
   6   static get Options() {
   7     return {
   8       select: ChessRules.Options.select.concat([
   9         {
  10           label: "Army 1",
  11           variable: "army1",
  12           defaut: 'C',
  13           options: [
  14             { label: "Colorbound Clobberers", value: 'C' },
  15             { label: "Nutty Knights", value: 'N' },
  16             { label: "Remarkable Rookies", value: 'R' },
  17             { label: "Fide", value: 'F' }
  18           ]
  19         },
  20         {
  21           label: "Army 2",
  22           variable: "army2",
  23           defaut: 'C',
  24           options: [
  25             { label: "Colorbound Clobberers", value: 'C' },
  26             { label: "Nutty Knights", value: 'N' },
  27             { label: "Remarkable Rookies", value: 'R' },
  28             { label: "Fide", value: 'F' }
  29           ]
  30         }
  31       ]),
  32       input: ChessRules.Options.input,
  33       styles: ChessRules.Options.styles
  34     };
  35   }
  36
  37   static get PiecesMap() {
  38     return {
  39       // Colorbound Clobberers
  40       'C': {
  41         'r': 'd',
  42         'n': 'w',
  43         'b': 'f',
  44         'q': 'c',
  45         'k': 'm',
  46         'p': 'z'
  47       },
  48       // Nutty Knights
  49       'N': {
  50         'r': 'g',
  51         'n': 'i',
  52         'b': 't',
  53         'q': 'l',
  54         'k': 'e',
  55         'p': 'v'
  56       },
  57       // Remarkable Rookies
  58       'R': {
  59         'r': 's',
  60         'n': 'y',
  61         'b': 'h',
  62         'q': 'o',
  63         'k': 'a',
  64         'p': 'u'
  65       }
  66     };
  67   }
  68
  69   genRandInitBaseFen() {
  70     let s = FenUtil.setupPieces(
  71       ['r', 'n', 'b', 'q', 'k', 'b', 'n', 'r'],
  72       {
  73         randomness: this.options["randomness"],
  74         between: [{p1: 'k', p2: 'r'}],
  75         diffCol: ['b'],
  76         flags: ['r', 'k']
  77       }
  78     );
  79     let pawnLines = {
  80       w: Array(8).fill('p'),
  81       b: Array(8).fill('p')
  82     };
  83     for (const c of ['w', 'b']) {
  84       const army = "army" + (c == 'w' ? "1" : "2");
  85       if (this.options[army] != 'F') {
  86         for (let obj of [s, pawnLines])
  87           obj[c] = obj[c].map(p => V.PiecesMap[this.options[army]][p]);
  88       }
  89     }
  90     return {
  91       fen: s.b.join("") + "/" +
  92            pawnLines['b'].join("") +
  93            "/8/8/8/8/" +
  94            pawnLines['w'].join("").toUpperCase() +
  95            "/" + s.w.join("").toUpperCase(),
  96       o: {flags: s.flags}
  97     };
  98   }
  99
 100   getPartFen(o) {
 101     return Object.assign(
 102       { "armies": this.options["army1"] + this.options["army2"] },
 103       super.getPartFen(o)
 104     );
 105   }
 106
 107   setOtherVariables(fenParsed) {
 108     super.setOtherVariables(fenParsed);
 109     this.options["army1"] = fenParsed.armies.charAt(0);
 110     this.options["army2"] = fenParsed.armies.charAt(1);
 111   }
 112
 113   isKing(x, y, p) {
 114     if (!p)
 115       p = this.getPiece(x, y);
 116     return (super.isKing(x, y, p) || ['a', 'e', 'm'].includes(p));
 117   }
 118
 119   // Helper to describe pieces movements
 120   static get steps() {
 121     return {
 122       // Dabbabah
 123       'd': [
 124         [-2, 0],
 125         [0, -2],
 126         [2, 0],
 127         [0, 2]
 128       ],
 129       // Alfil
 130       'a': [
 131         [2, 2],
 132         [2, -2],
 133         [-2, 2],
 134         [-2, -2]
 135       ],
 136       // Ferz
 137       'f': [
 138         [1, 1],
 139         [1, -1],
 140         [-1, 1],
 141         [-1, -1]
 142       ],
 143       // Wazir
 144       'w': [
 145         [-1, 0],
 146         [0, -1],
 147         [1, 0],
 148         [0, 1]
 149       ],
 150       // Threeleaper
 151       '$3': [
 152         [-3, 0],
 153         [0, -3],
 154         [3, 0],
 155         [0, 3]
 156       ],
 157       // Narrow knight
 158       '$n': [
 159         [-2, -1],
 160         [-2, 1],
 161         [2, -1],
 162         [2, 1]
 163       ]
 164     };
 165   }
 166
 167   pieces(color, x, y) {
 168     const res = super.pieces(color, x, y);
 169     const backward = (color == 'w' ? 1 : -1);
 170     const forward = -backward;
 171     return Object.assign(
 172       {
 173         'd': {
 174           "class": "c_rook",
 175           both: [
 176             {steps: res['b'].both[0].steps},
 177             {steps: V.steps.d, range: 1}
 178           ]
 179         },
 180         'w': {
 181           "class": "c_knight",
 182           both: [
 183             {steps: V.steps.a, range: 1},
 184             {steps: res['r'].both[0].steps, range: 1}
 185           ]
 186         },
 187         'f': {
 188           "class": "c_bishop",
 189           both: [
 190             {steps: V.steps.d, range: 1},
 191             {steps: V.steps.a, range: 1},
 192             {steps: res['b'].both[0].steps, range: 1}
 193           ]
 194         },
 195         'c': {
 196           "class": "c_queen",
 197           both: [
 198             {steps: res['b'].both[0].steps},
 199             {steps: res['n'].both[0].steps, range: 1}
 200           ]
 201         },
 202         'm': { "class": "c_king", moveas: 'k' },
 203         'z': { "class": "c_pawn", moveas: 'p' },
 204         'g': {
 205           "class": "n_rook",
 206           both: [
 207             {steps: [[0, -1], [0, 1], [color == 'w' ? -1 : 1, 0]]},
 208             {steps: [[backward, -1], [backward, 0], [backward, 1]], range: 1}
 209           ]
 210         },
 211         'i': {
 212           "class": "n_knight",
 213           both: [
 214             {steps: V.steps.$n, range: 1},
 215             {steps: V.steps.f, range: 1}
 216           ]
 217         },
 218         't': {
 219           "class": "n_bishop",
 220           both: [
 221             {
 222               steps: [[0, -1], [0, 1], [backward, -1],
 223                      [backward, 0], [backward, 1]],
 224               range: 1
 225             },
 226             {
 227               steps: [[2*forward, -1], [2*forward, 1],
 228                      [forward, -2], [forward, 2]],
 229               range: 1
 230             }
 231           ]
 232         },
 233         'l': {
 234           "class": "n_queen",
 235           both: [
 236             {steps: [[0, -1], [0, 1], [forward, 0]]},
 237             {steps: [[forward, -1], [forward, 1],
 238                     [backward, -1], [backward, 0], [backward, 1]], range: 1},
 239             {steps: [[2*forward, -1], [2*forward, 1],
 240                     [forward, -2], [forward, 2]], range: 1}
 241           ]
 242         },
 243         'e': { "class": "n_king", moveas: 'k' },
 244         'v': { "class": "n_pawn", moveas: 'p' },
 245         's': {
 246           "class": "r_rook",
 247           both: [{steps: res['r'].both[0].steps, range: 4}]
 248         },
 249         'y': {
 250           "class": "r_knight",
 251           both: [
 252             {steps: V.steps.d, range: 1},
 253             {steps: V.steps.w, range: 1}
 254           ]
 255         },
 256         'h': {
 257           "class": "r_bishop",
 258           both: [
 259             {steps: V.steps.d, range: 1},
 260             {steps: V.steps.f, range: 1},
 261             {steps: V.steps.$3, range: 1}
 262           ]
 263         },
 264         'o': {
 265           "class": "r_queen",
 266           both: [
 267             {steps: res['r'].both[0].steps},
 268             {steps: res['n'].both[0].steps, range: 1}
 269           ]
 270         },
 271         'a': { "class": "r_king", moveas: 'k' },
 272         'u': { "class": "r_pawn", moveas: 'p' }
 273       },
 274       res
 275     );
 276   }
 277
 278   get pawnPromotions() {
 279     // Can promote in anything from the two current armies
 280     let promotions = [];
 281     for (let army of ["army1", "army2"]) {
 282       if (army == "army2" && this.options["army2"] == this.options["army1"])
 283         break;
 284       switch (this.options[army]) {
 285         case 'C':
 286           Array.prototype.push.apply(promotions, ['d', 'w', 'f', 'c']);
 287           break;
 288         case 'N':
 289           Array.prototype.push.apply(promotions, ['g', 'i', 't', 'l']);
 290           break;
 291         case 'R':
 292           Array.prototype.push.apply(promotions, ['s', 'y', 'h', 'o']);
 293           break;
 294         case 'F':
 295           Array.prototype.push.apply(promotions, ['r', 'n', 'b', 'q']);
 296           break;
 297       }
 298     }
 299     return promotions;
 300   }
 301
 302   getCastleMoves([x, y]) {
 303     const color = this.getColor(x, y);
 304     let finalSquares = [ [2, 3], [this.size.y - 2, this.size.y - 3] ];
 305     if (
 306       (color == 'w' && this.options["army1"] == 'C') ||
 307       (color == 'b' && this.options["army2"] == 'C')
 308     ) {
 309       // Colorbound castle long in an unusual way:
 310       finalSquares[0] = [1, 2];
 311     }
 312     return super.getCastleMoves([x, y], finalSquares);
 313   }
 314
 315 };