CODEWITHSUNDEEP
iphonexcodecocos2d-iphonebox2dphysics-engine
user891123
user891123

Reputation: 391

How to stop the forces acting on a body in box2d

I am using box2d on the iphone to create a game. I have a body that is effected by gravity to move down and not right or left. It will get hit by another body and will then be moving right or left. I then have a reset button which moves the body back to its starting point. The only problem is that it is still moving right or left. How can I counteract the forces that a ball is already traveling? How can I get rid of this right and left movement when I reset my game?

Upvotes: 12

Views: 11989

Answers (1)

Andrew
Andrew

Reputation: 24846

Box2d automatically clears the forces each simulation step. I think you are just changing your body's position when resetting, but not its velocity. Add this code to your reset method:

body->SetLinearVelocity(b2Vec2(0,0));
body->SetAngularVelocity(0);

Upvotes: 27

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