freeblox/packages/engine/src/components/level.ts

109 lines
3.0 KiB
TypeScript

import { Renderer } from '../core/renderer';
import { EngineComponent } from '../types/engine-component';
import {
ChangeEvent,
EngineEvents,
RemoveEvent,
ReparentEvent,
} from '../types/events';
import { EventEmitter } from '../utils/events';
import { Environment } from '../gameobjects/environment.object';
import { assetManager } from '../assets/manager';
import { WorldFile } from '../types/world-file';
import { World } from '../gameobjects/world.object';
/**
* Game level management component
* @listens change Applies changes to objects
* @listens remove Removes objects from scene
* @listens reparent Reparents object
*/
export class LevelComponent extends EngineComponent {
private world!: World;
private environment!: Environment;
private cleanUpEvents?: Function;
constructor(
protected renderer: Renderer,
protected events: EventEmitter<EngineEvents>
) {
super(renderer, events);
}
initialize(): void {
this.world = this.renderer.scene.getObjectByName('World') as World;
this.environment = this.renderer.scene.getObjectByName(
'Environment'
) as Environment;
this.cleanUpEvents = this.bindEvents();
}
update(delta: number): void {}
cleanUp(): void {
this.cleanUpEvents?.call(this);
}
public getSceneTree() {
return {
world: this.world,
environment: this.environment,
};
}
public serializeLevelSave(name: string): WorldFile {
const world = this.world.serialize();
const environment = this.environment.serialize();
const assets = assetManager.serialize();
return {
name,
world,
environment,
assets,
};
}
private bindEvents() {
const changeEvent = (event: ChangeEvent) => {
if (event.applied || !event.object) return;
const prop = (event.object as any)[event.property];
if (prop?.copy) prop.copy(event.value);
else (event.object as any)[event.property] = event.value;
};
const removeEvent = (event: RemoveEvent) => {
if (event.applied || !event.object) return;
if (Array.isArray(event.object)) {
event.object.forEach((object) => object.removeFromParent());
return;
}
event.object.removeFromParent();
};
const reparentEvent = (event: ReparentEvent) => {
if (event.applied || !event.object || !event.parent) return;
if (Array.isArray(event.object)) {
event.object.forEach((object) => {
object.removeFromParent();
event.parent.add(object);
});
return;
}
event.object.removeFromParent();
event.parent.add(event.object);
};
this.events.addListener('change', changeEvent);
this.events.addListener('remove', removeEvent);
this.events.addListener('reparent', reparentEvent);
return () => {
this.events.removeEventListener('change', changeEvent);
this.events.removeEventListener('remove', removeEvent);
this.events.removeEventListener('reparent', reparentEvent);
};
}
}