Chipmunk Physics

Posted: **Tue Feb 16, 2010 2:14 pm**

Hey,
I'm trying to simulate two steel balls, same size and mass, hanging from strings colliding with one another. One ball is at rest and the other hits it. What I'd like to happen is that when the moving ball hits the at rest ball it transfers its speed to the other ball and stops moving. At the moment the ball that collides continues to move but a bit slower. Any suggestions would be appreciated.

Posted: **Tue Feb 16, 2010 2:30 pm**

Do the collision shapes have 1.0 for their elasticity? You will also need a lot of iterations to simulate this well.

Posted: **Tue Feb 16, 2010 3:51 pm**

This is where I set up the values for the ball sprites

Code: Select all

		mySprite.position = ccp(x,y);
		myBody = cpBodyNew(100.0f, cpMomentForCircle(100.0f, 0.0f, 25.0f, CGPointZero));
		myBody->p = ccp(x, y);

		cpSpaceAddBody(game->space, myBody);

		myShape = cpCircleShapeNew(myBody,25,CGPointZero); 
		myShape->e = 1; 
		myShape->u = 0;
		myShape->collision_type =1;

And these are the value set for the space they're in

Code: Select all

		space->gravity = ccp(0, -15000);
		space->elasticIterations = 0;
		space->iterations = 20;
		space->damping = 0.85;

Posted: **Mon Feb 22, 2010 1:25 pm**

So, would anyone have any suggestions on how to make this work better.

Chipmunk Physics

simulating steel ball collision

simulating steel ball collision

Re: simulating steel ball collision

Re: simulating steel ball collision

Re: simulating steel ball collision