Colliding with a wall, bouncing problem

[yoshi]

Hi!

I'm having a little issue with my application: I'm moving my character around the scene with setVelocity but I noticed that when he bumps into a wall
he continues to move back and forth quickly as it is trying to "penetrate" the wall.

The body still has linear velocity when colliding with the wall, so I thought about setting it to zero when the player is trying to walk toward the wall,
but is there any easier solution?

I tried setting elasticity and softness to zero, enabled continous collision mode and it helped a bit, but the small "bouncing" is still noticeable.

Thanks in advance


Note: I'm using ogrenewt with the latest newton

[microdot]

Never done this sort of controlling, but perhaps there is a damping property or something similar?

[JernejL]

How are you materials set up?

[yoshi]

The collision shape for the character is a sphere and the wall is a box, and in their material pair I set softness and elasticity to zero, enabled continousCollisionMode and nothing else.

The character also has an upvector constraint but I don't think that is the cause..

[JoeJ]

As Julio said, it's possible to set velocities directly, but my experience ist that this is fatal in some cases, and not good in general.
I recommend you to use force and torque whenever possible, so newton can calculate possible velocities.
It's impossible for a rigid sphere at a wall to have velocity pointing into the wall.

force = ((targetVel - currentVel) * (mass / timestep));

In your callback replace targetVel with the velocity you're currently using, and get currentVel from NewtonBodyGetVelocity().