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btSimpleDynamicsWorld.h

/*
Bullet Continuous Collision Detection and Physics Library
Copyright (c) 2003-2006 Erwin Coumans  http://continuousphysics.com/Bullet/

This software is provided 'as-is', without any express or implied warranty.
In no event will the authors be held liable for any damages arising from the use of this software.
Permission is granted to anyone to use this software for any purpose, 
including commercial applications, and to alter it and redistribute it freely, 
subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/

#ifndef BT_SIMPLE_DYNAMICS_WORLD_H
#define BT_SIMPLE_DYNAMICS_WORLD_H

#include "btDynamicsWorld.h"

class btDispatcher;
class btOverlappingPairCache;
class btConstraintSolver;

///btSimpleDynamicsWorld serves as unit-test and to verify more complicated and optimized dynamics worlds.
///Please use btDiscreteDynamicsWorld instead (or btContinuousDynamicsWorld once it is finished).
00027 class btSimpleDynamicsWorld : public btDynamicsWorld
{
protected:

      btConstraintSolver*     m_constraintSolver;

      bool  m_ownsConstraintSolver;

      void  predictUnconstraintMotion(btScalar timeStep);
      
      void  integrateTransforms(btScalar timeStep);
            
      btVector3   m_gravity;
      
public:



      ///this btSimpleDynamicsWorld constructor creates dispatcher, broadphase pairCache and constraintSolver
      btSimpleDynamicsWorld(btDispatcher* dispatcher,btBroadphaseInterface* pairCache,btConstraintSolver* constraintSolver,btCollisionConfiguration* collisionConfiguration);

      virtual ~btSimpleDynamicsWorld();
            
      ///maxSubSteps/fixedTimeStep for interpolation is currently ignored for btSimpleDynamicsWorld, use btDiscreteDynamicsWorld instead
      virtual int stepSimulation( btScalar timeStep,int maxSubSteps=1, btScalar fixedTimeStep=btScalar(1.)/btScalar(60.));

      virtual void      setGravity(const btVector3& gravity);

      virtual btVector3 getGravity () const;

      virtual void      addRigidBody(btRigidBody* body);

      virtual void      removeRigidBody(btRigidBody* body);
      
      virtual void      updateAabbs();

      void  synchronizeMotionStates();

      virtual void      setConstraintSolver(btConstraintSolver* solver);

      virtual btConstraintSolver* getConstraintSolver();

      virtual btDynamicsWorldType   getWorldType() const
      {
            return BT_SIMPLE_DYNAMICS_WORLD;
      }

      virtual void      clearForces();

};

#endif //BT_SIMPLE_DYNAMICS_WORLD_H

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