playcanvas/build/playcanvas/src/core/object-pool.js

PlayCanvas WebGL game engine

class ObjectPool {
		constructor(constructorFunc, size){
				this._pool = [];
				this._count = 0;
				this._constructor = constructorFunc;
				this._resize(size);
		}
		_resize(size) {
				if (size > this._pool.length) {
						for(let i = this._pool.length; i < size; i++){
								this._pool[i] = new this._constructor();
						}
				}
		}
		allocate() {
				if (this._count >= this._pool.length) {
						this._resize(this._pool.length * 2);
				}
				return this._pool[this._count++];
		}
		freeAll() {
				this._count = 0;
		}
}

export { ObjectPool };