Can you check for collision within custom shape?

[Mctittles]

I’ve created custom meshes and physics collision for certain actors and would like to do a quick test for collision on spawn based on an area specified with points.

At the time of spawn the actor does not have collision and is added after it’s spawned, so I would like to manually test to see if it’s being spawned inside something. Is there a way to supply points or a shape and check if it’s colliding with anything in the world?

[Kehel18]

Hello! There are several ways:

• you can use FActorSpawnParameters to add simple logic on collision things (FActorSpawnParameters | Unreal Engine Documentation)
• You can get Bounds from Actor class template and check this shape if it can cause a collision with SweepTest things (UWorld::SweepSingleByChannel | Unreal Engine Documentation)
• If you know something about Actor’s collision shape, you can just use LineTrace to check extremum points of this shape for collision (Line Trace | Unreal Engine Documentation)