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can't get physics to work right


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I imported a mesh and then separated it into two objects.  Basically a wheel and a stand for the wheel.  And I want the axle for the wheel to fall onto the stand and allow me to spin the wheel.

My problem is that I can't get the physics to work right.   I either drop things through the floor or gravity doesn't work at all, depending on the different engines and things I've tried.

I'm new to babylonjs so perhaps I'm doing wrong something that's simple to see.

My code is at  http://www.babylonjs-playground.com/#2I8LFS#2   If anyone can see what I'm doing wrong, I'd much appreciate it!

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To get the physics working properly you will have to run the physics code after loading the meshes. Otherwise the bodies generated using the physics engine won't be correct.

To get you started - http://www.babylonjs-playground.com/#2I8LFS#5

I am not sure which mesh is mesh, but if you want to simplify the scene and add a few comments, I will be able to help better.

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I tried to simplify and comment.   But now I get a compilation error seemingly related to getElemetById() which I don't see anywhere in my code.

And I had previously put an alert() in the code to ensure the mesh gets loaded before I let it proceed to creating imposters.   But even with your fix of doing physics imposter creation at the end of the mesh loading, I don't see objects using gravity and falling to the plane.


I have a simple sphere and cylinder for testing, along with my complicated mesh.   And those test objects don't fall either.   Must be something simple I'm doing wrong.


Also am I able to use the Oimo engine in the playground?

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  • 4 weeks later...

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