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How To Set LOD Collision

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You can set the Static Mesh to use Complex Collision (per triangle) from any LOD you have imported. This is useful for optimising physics performance, especially if you have lots of Complex Collisions against Static Meshes or Complex Collision Traces. However, there is no switch at run time between Complex Collision when the LOD's change, the chosen LOD will be used for all Complex Collision against the mesh.

Steps

  1. Import an LOD using the steps from Creating and Using LODs .

  2. In the Static Mesh Settings category of the Details Panel, Set the LOD For Collision to the value of that LOD (0 is the highest resolution mesh, with LODs starting at 1).

    LODForCol.png

As of version 4.12.3, if you enable visualization of collision (either in the Static Mesh Editor, in the Level Editor, or in your game), and are using a lower resolution LOD for collision, you will not see a representation of the collision like you would if a Static Mesh is set to Complex as Simple.