Hey everyone, I have a question I'm hoping you all can help guide on on the steps to do this. Okay let me briefly go over what I'm trying to accomplish. I'm making a Battle Royale game themed on Dinosaurs rather than the every day shoot-em up kind. You know how there's always that sphere or whatever that shrinks around the map condensing to the center? I'm trying to use fire particles so it can look like a controlled fire pushing inward. So rather than a sphere/cylinder that shrinks and condenses to the center, I was thinking of using a particle system that produces Fire, smoke, etc. But the problem I can't seem to figure out is - on a flat surface this works fine. But - How would I make the particle system recognize the terrain and for example - travel up a mountain side rather than just go through the mountain.