Does Bullet work on rootNode only?

Troubleshooting physics
1

Hi

I’ve started to integrate physics into my project and have a strange problem.

I’m using my own viewports to render (for post effects) and my game level/objects are on nodes rendered by these viewports only, so there is actually nothing on the rootnode.



When I add a bouncing ball (from my nodes) to the physics space, it just hangs in space without gravity taking effect,

however, when I attach it to the rootnode it works as expected, but it bypasses the rendering effects I need that use my own viewports.



Thanks for any help.

2

Your own viewports also have to update their scene graph. So you have to call updateLogicalState() and updateGeometricState() on your rootNode before you render.

3

I’ll try that, Thanks very much.

G.