Bullet is a professional, free 3D Game Multiphysics Library that provides state of the art collision detection, soft body and rigid body dynamics.

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701 views

How can I get my meshes to work with Bullet Physics?

The problem is that I'm trying to use my meshes with Bullet Physics for the collision part of my game. When I attempted doing this method with my GLM(model loading library by nate robins) model, I ...
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1answer
53 views

Need help with a complex 3d scene (using Ogre and bullet)

In my setup there is a box with a hole on one side, and a freely movable "stick" (or bar, tube). This stick can be inserted/moved through the hole into the box. This hole is exactly as wide as the ...
0
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1answer
205 views

Distance between two objects?

We are trying to determine the distance (a scalar, double) between two objects' surfaces in Bullet. We are new to the Bullet engine, and we've been looking into the demo projects, but couldn't find ...
6
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0answers
105 views

How to extend the btCollisionAlgorithm class in order to enable collision response with a terrain map created from voxels

I am using Bullet, and am attempting to make a collision algorithm that generates contact points off of a voxel (cube) based terrain, and creates the appropriate collision response. I also plan to ...
4
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0answers
345 views

Bullet Physics implementing custom MotionState class

I'm trying to make my engine's camera a kinematic rigid body that can collide into other rigid bodies. I've overridden the btMotionState class and implemented setKinematicPos which updates the motion ...
3
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0answers
233 views

How to prevent the main character to push other characters with Bullet Physics?

I am doing a 3D RPG game, and I want the player to be unable to push the other characters in the game like if they were inside the static geometry of the level, but I want the other characters to push ...
2
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0answers
138 views

Inverse Dynamics How to

I have some motion capture data (kinect) that records all body joints (32fps) and I want to take particular positions (for example when a person moves both of his hands up in the sky in celebration ...
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0answers
20 views

Collision Detection Problems in Bullet Physics

I am trying to detect collisions between two objects, both btBoxShapes. One of them, I update by setting body->setWorldTransform(transform); I have implemented collision detection using the ...
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0answers
30 views

Bullet btGeneric6DofConstraint and btGeneric6DofSpringConstraint constructor arguments

I have a very simple (and maybe too primitive to post here but I’ll try anyway :P) question about Bullet constraints. What are arguments const btTransform &frameInA, const btTransform ...
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0answers
64 views

colliding btRigidBody objects behave strangely when moving slowly

I'm trying to use Bullet Physics in my iOS game. The engine appears to be correctly compiled in that the demos work fine. In my game I have the player's ship and some enemy ships. They're defined as ...
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0answers
157 views

Getting whole world velocity using bullet physics

I would like to make some action when all objects in dynamic world have 0 velocity. I was trying to iterate on all of them all the time and when some counter is equal to function ...
0
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0answers
140 views

Ball-cylinder collision detection with Bullet Physics

I am trying to find out collision detection between specific objects and when they are colliding then want to invoke a specific method. I have read one this tutorial but I don't understand how to use ...
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0answers
63 views

HowTo Enable jBullet DebugMode

I would like to render the physics world of jBullet to debug some issues in my game, and I am not finding too much on enabling the debugDraw method of jBullet. Do I need to write my own debugDraw ...
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270 views

What is the best way to implement collision detection using Bullet physics engine and a track generated from a curve?

I am developing a small racing gam, the track is generated from a curve. As said above, the track is generated, but not infinite. The track of one level could fit with no problem in memory and will ...
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0answers
31 views

How to keep track of objects inside bullet physics to add/remove them

I am working on a program that will have alot of boxes. As the player moves through the space I will use bulletphysics to check for collision using the ghost object. How can I track the many objects ...