Fix Copycat
[xogo.git] / variants / Copycat / class.js
... / ...
CommitLineData
1import ChessRules from "/base_rules.js";
2
3export default class CopycatRules extends ChessRules {
4
5 static get Options() {
6 return {
7 select: C.Options.select,
8 input: C.Options.input,
9 styles: C.Options.styles.filter(s => !["madrasi", "zen"].includes(s))
10 };
11 }
12
13 getStepSpec(color, x, y) {
14 let res = super.getStepSpec(color, x, y);
15 const piece = this.getPiece(x,y);
16 if (['p', 'k'].includes(piece))
17 return res;
18 // Now check if the piece at x, y attack some friendly one (enhancement)
19 let movements = {};
20 const steps = this.pieces()[piece].both[0].steps;
21 steps.forEach(s => {
22 let [i, j] = [x + s[0], y + s[1]];
23 while (
24 this.onBoard(i, j) &&
25 this.board[i][j] == "" &&
26 piece != 'n'
27 ) {
28 i += s[0];
29 j += s[1];
30 }
31 if (this.onBoard(i, j) && this.getColor(i, j) == color) {
32 const attacked = this.getPiece(i, j);
33 if (['r', 'b', 'n'].includes(attacked)) {
34 if (!movements[attacked])
35 movements[attacked] = true;
36 }
37 else if (attacked == 'q') {
38 if (!movements['r'])
39 movements['r'] = true;
40 if (!movements['b'])
41 movements['b'] = true;
42 }
43 }
44 });
45 Object.keys(movements).forEach(type => {
46 if ((piece != 'q' && type != piece) || (piece == 'q' && type == 'n'))
47 res.both.push(this.pieces()[type].both[0]);
48 });
49 return res;
50 }
51
52};