Add traces to understand what happens in MarseilleChess about turn/subturn
[vchess.git] / public / javascripts / variants / Antiking.js
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204e289b 1class AntikingRules extends ChessRules
7d6b0773 2{
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3 static getPpath(b)
4 {
5 return b[1]=='a' ? "Antiking/"+b : b;
6 }
7
8 static get ANTIKING() { return 'a'; }
7931e479 9
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10 static get PIECES()
11 {
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12 return ChessRules.PIECES.concat([V.ANTIKING]);
13 }
14
2d7194bd 15 setOtherVariables(fen)
46302e64 16 {
2d7194bd 17 super.setOtherVariables(fen);
204e289b 18 this.antikingPos = {'w':[-1,-1], 'b':[-1,-1]};
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19 const rows = V.ParseFen(fen).position.split("/");
20 for (let i=0; i<rows.length; i++)
204e289b 21 {
6037f1d8 22 let k = 0;
2d7194bd 23 for (let j=0; j<rows[i].length; j++)
204e289b 24 {
2d7194bd 25 switch (rows[i].charAt(j))
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26 {
27 case 'a':
6037f1d8 28 this.antikingPos['b'] = [i,k];
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29 break;
30 case 'A':
6037f1d8 31 this.antikingPos['w'] = [i,k];
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32 break;
33 default:
2d7194bd 34 const num = parseInt(rows[i].charAt(j));
204e289b 35 if (!isNaN(num))
6037f1d8 36 k += (num-1);
204e289b 37 }
6037f1d8 38 k++;
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39 }
40 }
46302e64 41 }
7d6b0773 42
204e289b 43 canTake([x1,y1], [x2,y2])
7d6b0773 44 {
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45 const piece1 = this.getPiece(x1,y1);
46 const piece2 = this.getPiece(x2,y2);
47 const color1 = this.getColor(x1,y1);
48 const color2 = this.getColor(x2,y2);
a6abf094 49 return piece2 != "a" &&
204e289b 50 ((piece1 != "a" && color1 != color2) || (piece1 == "a" && color1 == color2));
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51 }
52
53 getPotentialMovesFrom([x,y])
54 {
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55 switch (this.getPiece(x,y))
56 {
0b7d99ec 57 case V.ANTIKING:
204e289b 58 return this.getPotentialAntikingMoves([x,y]);
7d6b0773 59 default:
204e289b 60 return super.getPotentialMovesFrom([x,y]);
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61 }
62 }
63
204e289b 64 getPotentialAntikingMoves(sq)
7d6b0773 65 {
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66 return this.getSlideNJumpMoves(sq,
67 V.steps[V.ROOK].concat(V.steps[V.BISHOP]), "oneStep");
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68 }
69
46302e64 70 isAttacked(sq, colors)
7d6b0773 71 {
46302e64 72 return (super.isAttacked(sq, colors) || this.isAttackedByAntiking(sq, colors));
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73 }
74
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75 isAttackedByKing([x,y], colors)
76 {
a37076f1 77 if (this.getPiece(x,y) == V.ANTIKING)
6037f1d8 78 return false; //antiking is not attacked by king
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79 return this.isAttackedBySlideNJump([x,y], colors, V.KING,
80 V.steps[V.ROOK].concat(V.steps[V.BISHOP]), "oneStep");
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81 }
82
204e289b 83 isAttackedByAntiking([x,y], colors)
7d6b0773 84 {
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85 if ([V.KING,V.ANTIKING].includes(this.getPiece(x,y)))
86 return false; //(anti)king is not attacked by antiking
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87 return this.isAttackedBySlideNJump([x,y], colors, V.ANTIKING,
88 V.steps[V.ROOK].concat(V.steps[V.BISHOP]), "oneStep");
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89 }
90
f6dbe8e3 91 underCheck(color)
7d6b0773 92 {
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93 const oppCol = this.getOppCol(color);
94 let res = this.isAttacked(this.kingPos[color], [oppCol])
95 || !this.isAttacked(this.antikingPos[color], [oppCol]);
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96 return res;
97 }
98
f6dbe8e3 99 getCheckSquares(color)
7d6b0773 100 {
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101 let res = super.getCheckSquares(color);
102 if (!this.isAttacked(this.antikingPos[color], [this.getOppCol(color)]))
103 res.push(JSON.parse(JSON.stringify(this.antikingPos[color])));
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104 return res;
105 }
106
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107 updateVariables(move)
108 {
204e289b 109 super.updateVariables(move);
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110 const piece = move.vanish[0].p;
111 const c = move.vanish[0].c;
204e289b 112 // Update antiking position
0b7d99ec 113 if (piece == V.ANTIKING)
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114 {
115 this.antikingPos[c][0] = move.appear[0].x;
116 this.antikingPos[c][1] = move.appear[0].y;
117 }
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118 }
119
120 unupdateVariables(move)
121 {
204e289b 122 super.unupdateVariables(move);
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123 const c = move.vanish[0].c;
124 if (move.vanish[0].p == V.ANTIKING)
204e289b 125 this.antikingPos[c] = [move.start.x, move.start.y];
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126 }
127
204e289b 128 checkGameEnd()
7d6b0773 129 {
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130 const color = this.turn;
131 const oppCol = this.getOppCol(color);
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132 if (!this.isAttacked(this.kingPos[color], [oppCol])
133 && this.isAttacked(this.antikingPos[color], [oppCol]))
204e289b 134 {
7d6b0773 135 return "1/2";
204e289b 136 }
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137 return color == "w" ? "0-1" : "1-0";
138 }
139
7d6b0773 140 static get VALUES() {
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141 return Object.assign(
142 ChessRules.VALUES,
143 { 'a': 1000 }
144 );
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145 }
146
147 static GenRandInitFen()
148 {
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149 let pieces = { "w": new Array(8), "b": new Array(8) };
150 let antikingPos = { "w": -1, "b": -1 };
151 for (let c of ["w","b"])
152 {
153 let positions = _.range(8);
154
155 // Get random squares for bishops, but avoid corners; because,
156 // if an antiking blocks a cornered bishop, it can never be checkmated
157 let randIndex = 2 * _.random(1,3);
158 const bishop1Pos = positions[randIndex];
159 let randIndex_tmp = 2 * _.random(2) + 1;
160 const bishop2Pos = positions[randIndex_tmp];
161 positions.splice(Math.max(randIndex,randIndex_tmp), 1);
162 positions.splice(Math.min(randIndex,randIndex_tmp), 1);
163
164 randIndex = _.random(5);
165 const knight1Pos = positions[randIndex];
166 positions.splice(randIndex, 1);
167 randIndex = _.random(4);
168 const knight2Pos = positions[randIndex];
169 positions.splice(randIndex, 1);
170
171 randIndex = _.random(3);
172 const queenPos = positions[randIndex];
173 positions.splice(randIndex, 1);
174
175 const rook1Pos = positions[0];
176 const kingPos = positions[1];
177 const rook2Pos = positions[2];
178
179 // Random squares for antikings
180 antikingPos[c] = _.random(7);
181
182 pieces[c][rook1Pos] = 'r';
183 pieces[c][knight1Pos] = 'n';
184 pieces[c][bishop1Pos] = 'b';
185 pieces[c][queenPos] = 'q';
186 pieces[c][kingPos] = 'k';
187 pieces[c][bishop2Pos] = 'b';
188 pieces[c][knight2Pos] = 'n';
189 pieces[c][rook2Pos] = 'r';
190 }
191 const ranks23_black = "pppppppp/" + (antikingPos["w"]>0?antikingPos["w"]:"")
192 + "A" + (antikingPos["w"]<7?7-antikingPos["w"]:"");
193 const ranks23_white = (antikingPos["b"]>0?antikingPos["b"]:"") + "a"
194 + (antikingPos["b"]<7?7-antikingPos["b"]:"") + "/PPPPPPPP";
c794dbb8 195 return pieces["b"].join("") + "/" + ranks23_black +
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196 "/8/8/" +
197 ranks23_white + "/" + pieces["w"].join("").toUpperCase() +
fb6ceeff 198 " w 1111 -";
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199 }
200}
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201
202const VariantRules = AntikingRules;