xchess/lib/special-piece.js

Chess Engine

import {Piece} from './piece.js'

export class Wall extends Piece {

	static get code(){
		return 6;
	}

	static get char(){
		return 'W';
	}

	static get signs(){
		return ['🚧', '⛔'];
	}

	isCapturable(color, board){
		return false;
	}
}

export class Token extends Piece {

	static get code(){
		return 7;
	}

	static get char(){
		return 'T';
	}

	static get signs(){
		return ['💎', '🍎'];
	}
}

export class Gate extends Piece {

	static get code(){
		return 8;
	}

	static get char(){
		return 'G';
	}

	static get signs(){
		return ['🎯', '🌀'];
	}

	isCapturable(color, board){
		if(this.color.eq(color))
			return false;
		for(const piece of board.values())
			if(Token.is(piece) && piece.color.opposite(color))
				return false;
		return true;
	}
}