hi this looks neat. Can a projectile be made to bounce off things like a ball in breakout? thanks. also im using 4.0.0 and downloaded under 4.1.1 but got message: Plugin "CustomProjectile" is based on an unknown engine version and may not work correctly. Plugin authors can fix this issue by making sure `engine/engine.json` exists in the plugin containing at least `{"version": "4.0.0-e0"}`.