Roblox MeshPart (.FBX, From Blender) has Invisible Barriers/Parts that make the player walk on thin air

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#1

Does anyone know how I could go about fixing this problem? It probably has something to do with the way it was exported etc. If you know any further details about importing .FBX files let me know!

The only solution I can come up with is to turn off CanCollide for the terrain. Then, make invisible parts for the player to collide with so that they don’t fall through the terrain.

Again, anything helps! Thanks for reading. <3

Here is a video: Roblox MeshPart (.FBX, From Blender) has Invisible Barriers/Parts

#2

It could be because the CollisionFidelity attribute of the mesh is not set to a fit type.

In cases where you want accurate collision, select PreciseConvexDecomposition instead of Default.

#3

Thanks for the reply! Unfortunately, I turned that setting on and the same thing is still happening. Anything else I could maybe do? Anyways, thanks again.

#4

There is a plugin called “Mesh Optimization” created by maximum_adhd aka CloneTrooper1019 which can be used to see hitboxes in meshes. Exporting your blender terrain in different chunks could help solve your problem.

https://create.roblox.com/marketplace/asset/414923656/Mesh-Optimization-Tools?pageNumber=1&pagePosition=0&keyword=mesh+optimization

#5

Thanks for the reply again! So, I downloaded and used the plugin. My terrain looks super weird when I turn on “Decomposition Geometry”, nothing is accurate at all. I tried exporting in sections but, it was still weird. Should I just make a terrain pack for myself to use and build inside Roblox Studio?

#6

When you insert a very big mesh part with different heights and depths, Roblox tends to mess up collisions even at a precision level. I would suggest either importing your mesh in smaller chunks then connecting them together like a puzzle. But, that’s up to you and how you want to create your terrain.

#7

Okay, thanks for the clarification. I’m going just make modular pieces or scale it down and do sections.