Cant turn on Simulate Physics for StaticMeshActor

Development World Creation
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1

Howdy,

I’ve created a new empty project, added a Geometry Sphere to the scene, selected it and converted it to a StaticMesh.

Problem is i cant seem to select the simulate physics box for this StaticMesh.( ive also changed the mesh mobility to Movable )

Weirdly enough the SM_Template_Map_Floor StaticMesh that gets created whenever a empty project is created, does let me check/uncheck the simulate physics… any thoughs ?

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Hello,

In order to simulate physics, the object will need proper collision. BSPs made into meshes do not have this by default. Did you create collision bounds for the mesh? You can go into the Static Mesh editor, then click the “Collision” dropdown at the top, then click 6DOP Simplified Collision to give it a box-shaped collision. After the collision is added, save the mesh and turn on physics. Please let me know if that helps.

Cheers!

10 Likes
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It worked. Thanks!

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4

It helped me too. Thanks!

5

Same. Thanks.

6

version 4.17.2 This helped me answered my question.

7

thanks bro. worked for me too

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Thanks bro

9

thank you
this simply fixed the simple thing I wanted to do

10

hi, Can you please help me for UE v5.2. Facing same issue but don’t find DOP you said

11

hi there! I also met this problem.

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step1: double click your static mesh in broswer; step2: click collision tab and add a simple collision(the position at the top left of your window, nearby file, edit and so on); step3: go back to blueprint, the you will find the simulate collison checkbox can be check. Hope it works.

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This could be a collision issue or just a big mistake.

There are clearly many solutions here for collision mistakes. But Unreal has one thing most people forget: instances types. Better described like this:

Lets just say you need a landscape material. You get one from Quixel, but the type says ‘Material Instance’. There’s your problem. Instancing types like this act just like regular ones, but you can’t edit them.

Static Meshes take this property from whether you set them as movable. Setting it as not movable creates you collision issue, but if it is, just copy and paste the model into a regular version that YOU created.