87 lines
1.9 KiB
JavaScript
87 lines
1.9 KiB
JavaScript
import {compose} from '@avocado/core';
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import {hasGraphics, Container} from '@avocado/graphics';
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import {Rectangle, Vector} from '@avocado/math';
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import {StateProperty, 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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initialize() {
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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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destroy() {
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if (this._container) {
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this._container.destroy();
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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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get graphicalBoundingBox() {
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// Collect all bounding boxes.
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const graphicalBoundingBoxes = this.entity.invokeHookFlat(
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'graphicalBoundingBoxes'
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);
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if (0 === graphicalBoundingBoxes.length) {
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return [0, 0, 0, 0];
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}
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let unifiedBoundingBox = [0, 0, 0, 0];
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for (const graphicalBoundingBox of graphicalBoundingBoxes) {
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unifiedBoundingBox = Rectangle.united(
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unifiedBoundingBox,
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graphicalBoundingBox,
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);
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}
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return unifiedBoundingBox;
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}
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shouldSynchronizePosition() {
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return this.entity.container && this.trackPosition;
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}
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synchronizePosition() {
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if (!('position' in this.entity)) {
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return;
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}
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this.entity.container.position = Vector.round(this.entity.position);
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this.entity.container.zIndex = this.entity.y;
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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 = (type) => {
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if (-1 === [
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'graphical',
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'positioned',
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].indexOf(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.tick = () => {
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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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