body falls through

[ABACABB]

I create level collision using NewtonCreateTreeCollision

Code: Select all

NewtonCollision* const treeCollision = NewtonCreateTreeCollision (world, 0);
NewtonTreeCollisionBeginBuild (treeCollision);
//...
NewtonTreeCollisionEndBuild(treeCollision, 0);


Ok. I use simple sphere for create player control. All works without any problems.
But, when i create some body, using a NewtonCreateBox or NewtonCreateConvexHullFromMesh(on GIF), body can fall through collision mesh.

1 unit ~ 1 meter.
I use Irrlicht Engine.


I need some ideas… What's the problem.

[JoeJ]

If the knife is fast enough so that in one frame it is entirely above and next frame entirely below the floor polygon, no collision is detected by default ("tunneling").
You can prevent this by setting continuous collision detection on for the knife:
NewtonBodySetContinuousCollisionMode (knifeBody, 1)

[Dave Gravel]

The NewtonSetMinimumFrameRate can help too.
If you use 60, You have more chance to get this problem with objects moving fast.
Maybe 120 can help you to get a better result.