How can I stop my niagra snow system in UE5 from going through walls?

General Discussion
1

Hi guys, I am absolutely desperate for help with this topic as my project is due in 3 days. I have followed Matt Aspland’s snow tutorial on youtube and everything worked great, despite the snow particles coming through the ceiling of my scene. I then tried following his rain tutorial too as he included collision in that. (https://www.youtube.com/watch?v=s_UQYuM1RWU) This hasn’t worked. I understand it’s not a fully up to date video but I thought the underline would be the same. I am soo anxious about not getting it to work and NO one knows how to fix it. Please help

BTW I’m still a noob at UE5 and I really need it dumbed down

2

Hi. Post photos and videos of your particles system both in the level and also the emitters setup; they would go a long way in understanding what the problem is and possible solutions.

3

Is your system using GPU particles? The collisions on GPU are much more simplistic that CPU particles. CPU particles use a raycast against scene geometry for collisions, while GPU uses things such as the depth mask and only operates in screen space.

As mentioned, pictures of your emitter setups would help a lot.