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Box2D is an open-source rigid-body 2D physics simulation library for games, written in C++, with ports in various languages

-3
votes
1answer
In my game, I want run time modification in object body so I want to modify the joint def according to situation. So provide comment for how to modify jointdef run time.
asked May 24 '12 by Siddharth
3
votes
3answers
I want to ask that how to rotate body from corner? movableBeam.getBeamBody().setTransform(movableBeam.getBeamBody().getPosition(), angle); The above line of code rotate the beam from center that I …
asked Oct 1 '12 by Siddharth
4
votes
1answer
behavior of the car. In AndEnginen I didn't found the wheel joint implementation. So what I have to do for wheel joint implementation. I think I have to manually update the box2d library for this …
asked Oct 13 '12 by Siddharth
-1
votes
2answers
I was using box2d for the movement of the body. When I apply gravity (0,0) the bullet continuously move but when I change gravity to the earth the behavior was changed. I also try to apply continuous …
asked May 18 '12 by Siddharth
4
votes
3answers
I have multiple bodies in my game world in andengine. All the bodies affected by gravity but in that I want my specific body does not affected by the gravity. For that solution after research I found …
asked May 24 '12 by Siddharth
2
votes
2answers
How can I render the body and joints in the physics world? During research I found the class called Box2dDebugRenderer. But when I put it into use it was full of errors. I do not found some classed in …
asked May 30 '12 by Siddharth
7
votes
5answers
I get this error when attempting to remove a body from the world: java: /var/lib/hudson/jobs/libgdx/workspace/trunk/gdx/jni/Box2D/Dynamics/b2World.cpp:134: void b2World::DestroyBody(b2Body*): Assertion 'IsLocked() == false' failed. What am I doing wrong? …
asked Apr 10 '12 by Siddharth
7
votes
2answers
In my game, I want to provide the user with a drawing feature. By free hand drawing, the user creates a polygon shape. Then, in my game implementation, I have to create a body for the found vertices …
asked Dec 18 '12 by Siddharth
1
vote
1answer
I want to implement debug render for cocos2d android.So I can view how bodies are created. Right now I use gdx.jar file for box2d and load that jar file following way. static … { System.loadLibrary("gdx.jar"); } All the desire bodies are created but I need box2d debug renderer. I have search many place for this question but I could not found anything. So please anybody has knowledge regarding this then suggest me. …
asked Feb 21 '13 by Siddharth
1
vote
1answer
I want to rotate my rectangular sprite with circle body. The problem is the body doest not attached to the centre of the sprite. This was the default behaviour of the body and sprite. But I want that …
asked Mar 7 '13 by Siddharth