import {ResizableScene} from "../Login/ResizableScene"; import GameObject = Phaser.GameObjects.GameObject; import Events = Phaser.Scenes.Events; import AnimationEvents = Phaser.Animations.Events; /** * A scene that can track its dirty/pristine state. */ export abstract class DirtyScene extends ResizableScene { private isAlreadyTracking: boolean = false; protected dirty:boolean = true; private objectListChanged:boolean = true; /** * Track all objects added to the scene and adds a callback each time an animation is added. * Whenever an object is added, removed, or when an animation is played, the dirty state is set to true. * * Note: this does not work with animations from sprites inside containers. */ protected trackDirtyAnims(): void { if (this.isAlreadyTracking) { return; } this.isAlreadyTracking = true; const trackAnimationFunction = this.trackAnimation.bind(this); this.events.on(Events.ADDED_TO_SCENE, (gameObject: GameObject) => { this.objectListChanged = true; gameObject.on(AnimationEvents.ANIMATION_UPDATE, trackAnimationFunction); }); this.events.on(Events.REMOVED_FROM_SCENE, (gameObject: GameObject) => { this.objectListChanged = true; gameObject.removeListener(AnimationEvents.ANIMATION_UPDATE, trackAnimationFunction); }); this.events.on(Events.RENDER, () => { this.objectListChanged = false; }); } private trackAnimation(): void { this.objectListChanged = true; } public isDirty(): boolean { return this.dirty || this.objectListChanged; } public onResize(ev: UIEvent): void { this.objectListChanged = true; } }