First Project Help using UE 4

So I have a Laboratory building with several rooms in Blender. I export it as an fbx format and import it in my default level. The fbx has the floor but it’s a material, not a mesh. When I remove the default Floor and hit play, not only my character falls into the void but the floor doesn’t even exist. I have tried several different ways, but nothing works. Can you help with it?

Hello @Shad5y ,

I don’t understand about this sentence “The fbx has the floor but it’s a material, not a mesh” can you give a screenshot so we can understand it better?

However, if your imported mesh do not collide with the character, Is there already any collision for the object itself? you can check by going into your mesh in UE and check it on collision

Make sure that there is a collision for the mesh

By reading the sentence that “The floor doesn’t even exist” I imagine that the floor is invisible in the level, am I right?
If that is the case, you need to check your mesh itself in the blender did the floor has the right Normals or not.

You can check this by going into blender, and Check the Face Orientation menu (In the screenshot below)


Blue color will mean that your mesh is all save. However, IF there is a part of your mesh that has a red color, That red part will be invisible in the game
image


A way to fix this is by selecting the Red Face in the blender, Go to mesh > Normals > Flip.


after you flip it, it will be blue and won’t be transparent in game
image

Please do reply this if all I mention above is not the problem!

[Modify]
[Note]
It is ok to make Invisible face remain invisible. What im trying to say is IF there is a part of the mesh that colored RED, but the player is not supposed to see that, then you can ignore it. Example: A Plane will have 2 side, the upper side is blue and the bottom is red, Since the player only walk above that plane, you can ignore the red one. Also, If you flip a normals, you have to know that If one side is blue, then one side is red. When I flip the cube from blue to red, The inside faces of the cube goes blue.