Particle new Trigger, am I missing something?

Unity Engine
1

So, I’m looking at the new Triggers API, it seems I have to specify which colliders that will receive the callback. Shouldn’t it be tied to the physics system closely like the others callbacks?

Example, I set it an object on different physics layer that are ignored, the OnParticleCallback still gets called anyway.

2

Hi,

We decided to provide an explicit list of trigger volumes, for a couple of reasons:

  • it’s fast to just check a small number of colliders
  • physics layers are a scarce resource, it can be easy to run out of layers and we didn’t want to compound this problem with another system making use of them

That said, being able to apply the physics layers sounds like a useful feature. Would you envisage it being a simple checkbox in the module to enable filtering based on the active layers?

Right now, I think your only workaround would be to add/remove colliders via script.

3

I glad you mentioned physics layer being a scare resource. It is. I have mentioned this before, why is rendering layers tied to physics layers? Deferred rendering can only ignore 4 layers, so I get the this warning all the time or forced to switch to forward rendering. In my own engine in the past, I separated rendering and physics layers.

In this case here, I would expect to be implementing something generic. Say for rain, I would set a physics layer that the rain particle would collide with, and let the artists set that up instead of individual colliders.