@gamepark/rules-api/dist/material/location/strategy/StackingStrategy.js

API to implement the rules of a board game

import { PositiveSequenceStrategy } from './PositiveSequenceStrategy';
/**
 * This strategy will only work on items with the same location.x and location.y, to maintain a positive sequence on location.z,
 * for example to easily stack scoring pawns when they are on the same spot.
 */
export class StackingStrategy {
    delegate = new PositiveSequenceStrategy('z');
    addItem(material, item) {
        this.delegate.addItem(material.location(l => l.x === item.location.x && l.y === item.location.y), item);
    }
    moveItem(material, item, index) {
        const itemBefore = material.getItem(index);
        if (itemBefore.location.x === item.location.x && itemBefore.location.y === item.location.y) {
            this.delegate.moveItem(material.location(l => l.x === item.location.x && l.y === item.location.y), item, index);
        }
        else {
            this.delegate.removeItem(material.index(i => i !== index).location(l => l.x === itemBefore.location.x && l.y === itemBefore.location.y), itemBefore);
            this.delegate.addItem(material.location(l => l.x === item.location.x && l.y === item.location.y), item);
        }
    }
    removeItem(material, item) {
        this.delegate.removeItem(material.location(l => l.x === item.location.x && l.y === item.location.y), item);
    }
}
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