I'm using Bullet Physics for Collision Detection in a first person game. The collision basically work fine, I cannot walk through objects. But if I walk against the wall and release the key I get bounced back and automatically move backwards. This is something I do not want. The player should not be bouncing off when walking into a wall, it just shouldn't be possible to pass through it.
Here are some code snippets.
Creating the Player-RigidBody (class Camera):
btCollisionShape* _collisionShape = new btCapsuleShapeZ(0.2f, 1.0f); btDefaultMotionState* _motionState = new btDefaultMotionState(btTransform( btQuaternion(1, 0, 0, 1), btVector3(_position.x, _position.y, _position.z) )); btRigidBody::btRigidBodyConstructionInfo cameraRigidBodyCI( 10, _motionState, _collisionShape, btVector3(0, 0, 0) ); _rigidBody = new btRigidBody(cameraRigidBodyCI); _rigidBody->setActivationState(DISABLE_DEACTIVATION); Creating the RigidBody of the Walls and other box-objects:
btVector3 rigidBodyPos; btCollisionShape* collisionShape; glm::vec3* minMax = getMinMaxVertexCoords(); glm::vec3 minCoords = minMax[0]; glm::vec3 maxCoords = minMax[1]; glm::vec3 middleSize = glm::vec3((maxCoords.x - minCoords.x) / 2, (maxCoords.y - minCoords.y) / 2, (maxCoords.z - minCoords.z) / 2); glm::vec3 middlePos = glm::vec3((maxCoords.x + minCoords.x) / 2, (maxCoords.y + minCoords.y) / 2, (maxCoords.z + minCoords.z) / 2); collisionShape = new btBoxShape(btVector3(middleSize.x, middleSize.y, middleSize.z)); rigidBodyPos = btVector3(middlePos.x, middlePos.y, middlePos.z); btMotionState* motionState = new btDefaultMotionState(btTransform( btQuaternion(0, 0, 0, 1), rigidBodyPos )); btRigidBody::btRigidBodyConstructionInfo* rigidBodyCI = new btRigidBody::btRigidBodyConstructionInfo( 0, motionState, collisionShape, btVector3(0, 0, 0) ); if (_rigidBody != nullptr){ delete _rigidBody; _rigidBody = nullptr; } _rigidBody = new btRigidBody(*rigidBodyCI); _rigidBody->setActivationState(DISABLE_DEACTIVATION); _rigidBody->setRestitution(0.0f); The Collision-Detection itself:
dynamicsWorld->updateAabbs(); dynamicsWorld->stepSimulation(1 / 60.f, 10); //... btTransform cameraTrans = camera->getRigidBody()->getWorldTransform(); camera->setPosition(glm::vec3(cameraTrans.getOrigin().getX(), cameraTrans.getOrigin().getY(), cameraTrans.getOrigin().getZ())); How can I change this behaviour?
