const piece = this.getPieceType(x, y);
const stepSpec = this.getStepSpec(color, x, y, piece);
const attacks = stepSpec.both.concat(stepSpec.attack);
const piece = this.getPieceType(x, y);
const stepSpec = this.getStepSpec(color, x, y, piece);
const attacks = stepSpec.both.concat(stepSpec.attack);