109 lines
2.3 KiB
JavaScript
109 lines
2.3 KiB
JavaScript
const PIXI = 'undefined' !== typeof window ? require('pixi.js') : undefined;
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import {Renderable} from './renderable';
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export class Container extends Renderable {
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constructor() {
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super();
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this._children = [];
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this._childrenIndexes = new Map();
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this._isDirty = false;
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this.container = PIXI ? new PIXI.Container() : undefined;
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}
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addChild(child) {
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child.parent = this;
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this.isDirty = true;
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const index = this._children.push(child) - 1;
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this._childrenIndexes.set(child, index);
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this.container.addChild(child.internal);
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}
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get children() {
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return this._children;
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}
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destroy() {
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this.children.forEach((child) => {
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child.destroy();
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});
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super.destroy();
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}
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get internal() {
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return this.container;
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}
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get isDirty() {
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return this._isDirty;
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}
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set isDirty(isDirty) {
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if (this.parent) {
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this.parent.isDirty = isDirty;
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}
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this._isDirty = isDirty;
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}
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_removeChild(child) {
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const index = this._children.indexOf(child);
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if (-1 === index) {
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return;
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}
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this._children.splice(index, 1);
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this.container.removeChild(child.internal);
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}
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removeChild(child) {
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this._removeChild(child);
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this._resetChildrenIndexes();
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}
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removeAllChildren() {
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for (const child of this._children) {
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this._removeChild(child);
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}
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this._childrenIndexes = new Map();
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}
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_resetChildrenIndexes() {
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this._childrenIndexes = new Map();
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for (const i in this._children) {
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const child = this._children[i];
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this._childrenIndexes.set(child, i);
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}
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}
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tick() {
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if (!this.isDirty) {
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return;
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}
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let needsSort = false;
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for (const child of this._children) {
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if (0 !== child.zIndex) {
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needsSort = true;
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}
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if (child instanceof Container) {
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child.tick();
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}
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}
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if (!needsSort) {
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return;
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}
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this._children.sort((l, r) => {
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if (l.zIndex !== r.zIndex) {
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return l.zIndex - r.zIndex;
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}
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const lIndex = this._childrenIndexes.get(l);
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const rIndex = this._childrenIndexes.get(r);
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return lIndex - rIndex;
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});
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this.container.children = this._children.map((child) => {
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return child.internal;
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});
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this._resetChildrenIndexes();
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}
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}
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