I’m also interested in the proper way to do this, I’ve been playing around, most can be mitigated adding a “Actor Collision” to the emitter, this should stop going trough walls… but this happened to me. The collision modifier helped a lot, but still some particles go through the walls, thats why I guess should be a better/proper way!
Hope it helps! GL
**BEFORE “ACTOR COLLISION”
**
**AFTER “ACTOR COLLISION”
**