问题
I'm experimenting with box2d. I seem to have a problem people describe as sticky walls
I have a ball and a paddle
I'm using all the basic recommended scales I could find, 10m world, 1m ball
The ball has the following properties:
shape: circle (.5f radius)
size: 1.0f
density: 1.0f
restitution: 1.0f
friction: 0.0f
The paddle used to move the ball is 1.5m, it has the following properties: shape:
circle (.75f radius)
size: 1.5f
density: 10.0f
restitution: 0.1f
friction: 0.0f
As you see the friction is 0 for all objects.
The ball constantly gets stuck rolling along a wall or completely jammed in the 90 degree corners
I was thinking I could detect a collision with a wall and trigger an applyLinearImpulse to move the ball off the wall.
回答1:
You need to reduce the minimum velocity threshold for elastic collisions.
Do this by reducing b2Settings::b2_velocityThreshold closer to 0.
来源:https://stackoverflow.com/questions/5381399/how-can-i-prevent-a-ball-from-sticking-to-walls-in-box2d