64 lines
1.3 KiB
JavaScript
64 lines
1.3 KiB
JavaScript
import {compose} from '@avocado/core';
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import {hasGraphics, Container} from '@avocado/graphics';
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import {simpleState, Trait} from '../trait';
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const decorate = compose(
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);
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class GraphicalBase extends Trait {
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static defaultParams() {
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return {
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trackPosition: true,
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};
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}
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constructor(...args) {
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super(...args);
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if (hasGraphics) {
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this._container = new Container();
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}
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this.trackPosition = this.params.get('trackPosition');
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}
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hasInitialized() {
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if (this.shouldSynchronizePosition()) {
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this.synchronizePosition();
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}
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}
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get container() {
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return this._container;
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}
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shouldSynchronizePosition() {
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return hasGraphics && this.trackPosition && 'position' in this.entity;
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}
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synchronizePosition() {
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if ('position' in this.entity) {
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this.entity.container.position = this.entity.position;
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}
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}
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listeners() {
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const listeners = {};
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if (this.shouldSynchronizePosition()) {
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listeners.traitAdded = (trait) => {
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if ('positioned' !== trait.constructor.type()) {
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return;
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}
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this.synchronizePosition();
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};
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listeners.positionChanged = () => {
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this.synchronizePosition();
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};
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}
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return listeners;
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}
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}
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export class Graphical extends decorate(GraphicalBase) {}
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