(02-04-2018, 07:22 PM)AntLewis Wrote: Hey there, once Obi particles have been emitted, is there anyway to destroy all of them within a 2D radius of an object ?

Thanks for any help!

(03-04-2018, 09:59 PM)AntLewis Wrote: So....I've used the code found here, and by pressing a button to increase the radius of a CircleCollider2D it seems to deliver the effect I'm after. However, ideally this would work with trigger colliders which Obi does apparently support:

http://obi.virtualmethodstudio.com/forum/archive/index.php?thread-5.html

But when I flag the collider as a trigger it stops working - is there anything else I need to change?

Thanks

(04-04-2018, 08:22 AM)josemendez Wrote: Hi,

We cannot reproduce the issue. Turning any collider into a trigger still generates contacts for us. Can you post the exact code you're using? It is exactly the same as in the post you linked?

(04-04-2018, 08:25 PM)AntLewis Wrote: Hi there, thanks for the response. So I resolved the issue with the trigger not generating contacts (the script auto added a solver but I was using another one that I'd created in the scene). So now particles from the emitter will be destroyed on contact with a collider marked as trigger.

However, there's still an issue remaining that you might be able to help me with. When I press a key, I am scaling the size of the boxcollider2D ( the green outline is the collider that is being scaled).  When the boxcollider2D is not a trigger, the collider destroys particles when it scales and as it comes into contact with them (as expected). However, when it's marked as a trigger they are NOT destroyed when the boxcollider2D is scaled. So to clarify - I can fire particles at the box marked as a trigger and they are destroyed, but when a trigger collider is scaled up it does not destroy the particles (but unchecking the trigger flag makes it work).

I'm unsure why there is a difference in behaviour?

(05-04-2018, 09:28 AM)josemendez Wrote: Hi,

I can't reproduce this either.  Scaling a trigger works as intended for me.

Are you maybe changing its size instead of scaling? If this is the case, try altering its position/scale/rotation slightly too and see if this works. It might be a known bug in which changing the collider's properties without changing its transform fails to update the internal representation of the collision grid.