Correct me if I am wrong (I could be) but the way you’re doing this is getting the Players torso, and creating the rain within x range of the torso (which would explain why you limited zooming)? Pretty cool affect by the way.
It’s actually based on the camera. You’re limited to zooming because the rain “lags” slightly behind (it needs to fall). If you can zoom all the way out, then you can move your camera very far very quickly, which will mean the camera briefly leaves the rain. That is probably something that could be improved, but it’s easier to just limit the camera zoom.
This really is quite pretty. AntiBoomz0r’s can allow so much more (violent) rain, but it doesn’t have that fancy raindrop effect when it hits the ground. It also looks like it’d be easy to make a variety of different atmospheres just by changing the music; right now it’s sort of peaceful/sad mix, but I could see it being used during a boss fight or a mourning scene. Nice job, and thanks for releasing it ^^
For fun, I tried doing 4,000 parts with some edits. It was a bit laggy, but still ran pretty well.