gibbon.js/lib/src/data/grid-cell.js

Actor/Component system for use with pixi.js.

import { quickSplice } from "@/utils/array-utils";
export class GridCell {
    items = [];
    clear() {
        this.items.length = 0;
    }
    /**
     * Get objects in cell that overlap given flags.
     * @param object - Object being hit tested. Included so it wont hit test
     * against itself.
     * @param results - optional results array.
     * @returns
     */
    getHits(object, results = []) {
        for (let i = this.items.length - 1; i >= 0; i--) {
            const item = this.items[i];
            if (item != object && (!item.flags || !object.hitFlags || (item.flags & object.hitFlags))) {
                results.push(item);
            }
        }
        return results;
    }
    getItems(results = []) {
        for (let i = this.items.length - 1; i >= 0; i--) {
            if (results.indexOf(this.items[i]) < 0) {
                results.push(this.items[i]);
            }
        }
        return results;
    }
    addItem(go) {
        if (this.items.indexOf(go) < 0) {
            this.items.push(go);
        }
    }
    removeItem(go) {
        for (let i = this.items.length - 1; i >= 0; i--) {
            if (this.items[i] == go) {
                quickSplice(this.items, i);
                return;
            }
        }
    }
}
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