[vchess.git] / client / src / variants / Crossing.js

import { ChessRules } from "@/base_rules";

export class CrossingRules extends ChessRules {

  static get Lines() {
    return [ [[4, 0], [4, 8]] ];
  }

  getCurrentScore() {
    // Turn has changed:
    const color = V.GetOppCol(this.turn);
    const secondHalf = (color == 'w' ? [0, 1, 2, 3] : [4, 5, 6, 7]);
    if (secondHalf.includes(this.kingPos[color][0]))
      // Half-board is crossed
      return color == "w" ? "1-0" : "0-1";
    return super.getCurrentScore();
  }

  evalPosition() {
    // Count material:
    let evaluation = super.evalPosition();
    // Ponder with king position:
    return (
      evaluation/5 +
      Math.abs(this.kingPos["w"][0] - 3.5) -
      Math.abs(this.kingPos["b"][0] - 3.5)
    );
  }

};
Commit	Line	Data
	1	import { ChessRules } from "@/base_rules";
	2
	3	export class CrossingRules extends ChessRules {
	4
	5	static get Lines() {
	6	return [ [[4, 0], [4, 8]] ];
	7	}
	8
	9	getCurrentScore() {
	10	// Turn has changed:
	11	const color = V.GetOppCol(this.turn);
	12	const secondHalf = (color == 'w' ? [0, 1, 2, 3] : [4, 5, 6, 7]);
	13	if (secondHalf.includes(this.kingPos[color][0]))
	14	// Half-board is crossed
	15	return color == "w" ? "1-0" : "0-1";
	16	return super.getCurrentScore();
	17	}
	18
	19	evalPosition() {
	20	// Count material:
	21	let evaluation = super.evalPosition();
	22	// Ponder with king position:
	23	return (
	24	evaluation/5 +
	25	Math.abs(this.kingPos["w"][0] - 3.5) -
	26	Math.abs(this.kingPos["b"][0] - 3.5)
	27	);
	28	}
	29
	30	};