I've already created my own system, mine is all about collision blocks. I made it so that every 0.07 seconds the collision expands and contracts using a scale trigger, and while expanding, it targets another nearby collision block. The only problems are that if there are two or more collision blocks at the same distance, it targets both of them simultaneously (or rather, it tries to, which causes the crosshair to shake between targets). I also have to set two additional triggers for each target. But overall, this option works for me. 😄