Method _sortReverseZ

packages/melonjs/src/renderable/container.js:1039–1041

* Reverse Z Sorting function * @ignore

(a, b)

	 * @ignore
	 */
	_sortReverseZ(a, b) {
		return a.pos.z - b.pos.z;
	}

	/**
	 * Camera-distance sorting function used by `sortOn = "depth"`.