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'../systems/EntitySystem/Component'; import { vec2 } from '../utils'; const cachedTemp1 = vec2.create(); const cachedTemp2 = vec2.create(); const cachedTemp3 = vec2.create(); export default class UiLayout extends Component { static factory() { return new UiLayout(); } static get propsTypes() { return { camera: 'string_null', xAnchor: 'number', yAnchor: 'number', xOffset: 'number', yOffset: 'number' }; } get camera() { return this._camera; } set camera(value) { if (!value) { this._camera = null; this._cameraEntity = null; this._cameraComponent = null; return; } if (typeof value !== 'string') { throw new Error('`value` is not type of String!'); } const { entity } = this; this._camera = value; if (!!entity) { this._cameraEntity = entity.findEntity(value); if (!this._cameraEntity) { throw new Error(`Cannot find entity: ${value}`); } this._dirty = true; this._cameraComponent = this._cameraEntity.getComponent('Camera2D'); if (!this._cameraComponent) { throw new Error( `Entity doe not have Camera2D component: ${this._cameraEntity.path}` ); } } } get xAnchor() { return this._xAnchor; } set xAnchor(value) { if (typeof value !== 'number') { throw new Error('`value` is not type of Number!'); } this._xAnchor = value; this._dirty = true; } get yAnchor() { return this._yAnchor; } set yAnchor(value) { if (typeof value !== 'number') { throw new Error('`value` is not type of Number!'); } this._yAnchor = value; this._dirty = true; } get xOffset() { return this._xOffset; } set xOffset(value) { if (typeof value !== 'number') { throw new Error('`value` is not type of Number!'); } this._xOffset = value; this._dirty = true; } get yOffset() { return this._yOffset; } set yOffset(value) { if (typeof value !== 'number') { throw new Error('`value` is not type of Number!'); } this._yOffset = value; this._dirty = true; } constructor() { super(); this._camera = null; this._cameraEntity = null; this._cameraComponent = null; this._xAnchor = 0; this._yAnchor = 0; this._xOffset = 0; this._yOffset = 0; this._dirty = true; this._triggeringAction = false; } dispose() { super.dispose(); this._camera = null; this._cameraEntity = null; this._cameraComponent = null; } layout(triggerAction = true) { const { entity, _xAnchor, _yAnchor, _xOffset, _yOffset } = this; if (!entity) { return; } const { parent } = entity; if (!parent) { return; } const sprite = parent.getComponent('UiSprite'); let pw = 0; let ph = 0; if (!!sprite) { pw = sprite.cachedWidth; ph = sprite.cachedHeight; } else { const { _cameraComponent } = this; if (!!_cameraComponent) { vec2.set(cachedTemp1, -1, -1); vec2.transformMat4( cachedTemp2, cachedTemp1, _cameraComponent.inverseProjectionMatrix ); vec2.set(cachedTemp1, 1, 1); vec2.transformMat4( cachedTemp3, cachedTemp1, _cameraComponent.inverseProjectionMatrix ); pw = Math.abs(cachedTemp3[0] - cachedTemp2[0]); ph = Math.abs(cachedTemp3[1] - cachedTemp2[1]); } } entity.setPosition(pw * _xAnchor + _xOffset, ph * _yAnchor + _yOffset); if (!!triggerAction) { this._triggeringAction = true; entity.performAction('ui-layout'); this._triggeringAction = false; } } onAttach() { this.camera = this.camera; this.layout(); } onAction(name, ...args) { if (name === 'update') { return this.onUpdate(...args); } else if (name === 'ui-layout') { return this.onLayout(); } else if (name === 'camera-changed') { return this.onCameraChanged(...args); } else { return super.onAction(name, ...args); } } onUpdate(deltaTime) { if (this._dirty) { this.layout(); this._dirty = false; } } onLayout() { if (!this._triggeringAction) { this.layout(false); } } onCameraChanged(camera) { if (camera === this._cameraComponent) { this.layout(false); } } } </code></pre> </div> <footer class="footer"> Generated by <a href="https://esdoc.org">ESDoc(1.1.0)<img src="./image/esdoc-logo-mini-black.png"></a> </footer> <script src="script/search_index.js"></script> <script src="script/search.js"></script> <script src="script/pretty-print.js"></script> <script 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