playcanvas/build/playcanvas.prf/src/framework/components/registry.js

PlayCanvas WebGL game engine

import { EventHandler } from '../../core/event-handler.js';

class ComponentSystemRegistry extends EventHandler {
		constructor(){
				super();
				this.list = [];
		}
		add(system) {
				const id = system.id;
				if (this[id]) {
						throw new Error(`ComponentSystem name '${id}' already registered or not allowed`);
				}
				this[id] = system;
				this.list.push(system);
		}
		remove(system) {
				const id = system.id;
				if (!this[id]) {
						throw new Error(`No ComponentSystem named '${id}' registered`);
				}
				delete this[id];
				const index = this.list.indexOf(this[id]);
				if (index !== -1) {
						this.list.splice(index, 1);
				}
		}
		destroy() {
				this.off();
				for(let i = 0; i < this.list.length; i++){
						this.list[i].destroy();
				}
		}
}

export { ComponentSystemRegistry };