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how can I make a auto generation for collision ?

Hello~ I am new.

I imported a fbx which is a house. I dont combine the meshs because I want to edit the objects within the house.
Then, I want a collision(Auto Convex Collision) for each object.
But the “auto generate collision” function in import setting cannot help me.
Should I use blueprint to loop to add collisions?

It looks like you might have too many meshes. As far as collision goes–it will try to generate collision on import, if it doesn’t give good results then you can open the static mesh from the Content Browser and use the collision settings to change them there. If you still don’t get good results, then you would have to construct them yourself and import into UE4.