why is there No navigation on the edge of an imported FBX model?

Development World Creation
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Hi genius:

I have created a simple model by 3dsmax as followed. It has two walls in it and nothing else.

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Wheni imported this simple model into my ue4 project by “Import asset”, it worked. I can drag the asset into my scene and create such object as followed:

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The problem is that there is no navigation on the edge the model as i drew with red line. And even if i have set no roof in the original model, there is still navigation on the top of my model.

I wonder how could i export the model in 3dsmax, or import the model into ue4 correctly?

Any help would be Great!!

Wishes

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Check the collision mesh

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Hi JoSf:
Thanks for your reply!

When i import the FBX model into UE4, i checked the “Generate Missing Collision” is on(as in the following picture), but the problem remained.

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Then i tried unclicking it, i can surely enter the model area in ue4, but there is no collision as all, i.e, the character can walk through the walls. LOL

If you have some more advice, please let me know.

Thanks.

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The generated collision mesh tries to use a single shape to cover the whole model, and because the shape of your model is non-convex it causes issues. You can add collision meshes either in your 3D modeling software or inside Unreal’s static mesh editor.

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Thanks, I think i have learned what i need.