btDiscreteDynamicsWorld.h

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/*
Bullet Continuous Collision Detection and Physics Library
Copyright (c) 2003-2009 Erwin Coumans  http://bulletphysics.org
 
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_DISCRETE_DYNAMICS_WORLD_H
#define BT_DISCRETE_DYNAMICS_WORLD_H
 
#include "btDynamicsWorld.h"
class btDispatcher;
class btOverlappingPairCache;
class btConstraintSolver;
class btSimulationIslandManager;
class btTypedConstraint;
class btActionInterface;
class btPersistentManifold;
class btIDebugDraw;
 
struct InplaceSolverIslandCallback;
 
#include "LinearMath/btAlignedObjectArray.h"
#include "LinearMath/btThreads.h"
 
ATTRIBUTE_ALIGNED16(class)
btDiscreteDynamicsWorld : public btDynamicsWorld
{
protected:
    btAlignedObjectArray<btTypedConstraint*> m_sortedConstraints;
    InplaceSolverIslandCallback* m_solverIslandCallback;
 
    btConstraintSolver* m_constraintSolver;
 
    btSimulationIslandManager* m_islandManager;
 
    btAlignedObjectArray<btTypedConstraint*> m_constraints;
 
    btAlignedObjectArray<btRigidBody*> m_nonStaticRigidBodies;
 
    btVector3 m_gravity;
 
    //for variable timesteps
    btScalar m_localTime;
    btScalar m_fixedTimeStep;
    //for variable timesteps
 
    bool m_ownsIslandManager;
    bool m_ownsConstraintSolver;
    bool m_synchronizeAllMotionStates;
    bool m_applySpeculativeContactRestitution;
 
    btAlignedObjectArray<btActionInterface*> m_actions;
 
    int m_profileTimings;
 
    bool m_latencyMotionStateInterpolation;
 
    btAlignedObjectArray<btPersistentManifold*> m_predictiveManifolds;
    btSpinMutex m_predictiveManifoldsMutex;  // used to synchronize threads creating predictive contacts
 
    virtual void predictUnconstraintMotion(btScalar timeStep);
 
    void integrateTransformsInternal(btRigidBody * *bodies, int numBodies, btScalar timeStep);  // can be called in parallel
    virtual void integrateTransforms(btScalar timeStep);
 
    virtual void calculateSimulationIslands();
 
    
 
    virtual void updateActivationState(btScalar timeStep);
 
    void updateActions(btScalar timeStep);
 
    void startProfiling(btScalar timeStep);
 
    virtual void internalSingleStepSimulation(btScalar timeStep);
 
    void releasePredictiveContacts();
    void createPredictiveContactsInternal(btRigidBody * *bodies, int numBodies, btScalar timeStep);  // can be called in parallel
    virtual void createPredictiveContacts(btScalar timeStep);
 
    virtual void saveKinematicState(btScalar timeStep);
 
    void serializeRigidBodies(btSerializer * serializer);
 
    void serializeDynamicsWorldInfo(btSerializer * serializer);
    
public:
    BT_DECLARE_ALIGNED_ALLOCATOR();
 
    btDiscreteDynamicsWorld(btDispatcher * dispatcher, btBroadphaseInterface * pairCache, btConstraintSolver * constraintSolver, btCollisionConfiguration * collisionConfiguration);
 
    virtual ~btDiscreteDynamicsWorld();
 
    virtual int stepSimulation(btScalar timeStep, int maxSubSteps = 1, btScalar fixedTimeStep = btScalar(1.) / btScalar(60.));
 
    virtual void solveConstraints(btContactSolverInfo & solverInfo);
    
    virtual void synchronizeMotionStates();
 
    void synchronizeSingleMotionState(btRigidBody * body);
 
    virtual void addConstraint(btTypedConstraint * constraint, bool disableCollisionsBetweenLinkedBodies = false);
 
    virtual void removeConstraint(btTypedConstraint * constraint);
 
    virtual void addAction(btActionInterface*);
 
    virtual void removeAction(btActionInterface*);
 
    btSimulationIslandManager* getSimulationIslandManager()
    {
        return m_islandManager;
    }
 
    const btSimulationIslandManager* getSimulationIslandManager() const
    {
        return m_islandManager;
    }
 
    btCollisionWorld* getCollisionWorld()
    {
        return this;
    }
 
    virtual void setGravity(const btVector3& gravity);
 
    virtual btVector3 getGravity() const;
 
    virtual void addCollisionObject(btCollisionObject * collisionObject, int collisionFilterGroup = btBroadphaseProxy::StaticFilter, int collisionFilterMask = btBroadphaseProxy::AllFilter ^ btBroadphaseProxy::StaticFilter);
 
    virtual void addRigidBody(btRigidBody * body);
 
    virtual void addRigidBody(btRigidBody * body, int group, int mask);
 
    virtual void removeRigidBody(btRigidBody * body);
 
    virtual void removeCollisionObject(btCollisionObject * collisionObject);
 
    virtual void debugDrawConstraint(btTypedConstraint * constraint);
 
    virtual void debugDrawWorld();
 
    virtual void setConstraintSolver(btConstraintSolver * solver);
 
    virtual btConstraintSolver* getConstraintSolver();
 
    virtual int getNumConstraints() const;
 
    virtual btTypedConstraint* getConstraint(int index);
 
    virtual const btTypedConstraint* getConstraint(int index) const;
 
    virtual btDynamicsWorldType getWorldType() const
    {
        return BT_DISCRETE_DYNAMICS_WORLD;
    }
 
    virtual void clearForces();
 
    virtual void applyGravity();
 
    virtual void setNumTasks(int numTasks)
    {
        (void)numTasks;
    }
 
    virtual void updateVehicles(btScalar timeStep)
    {
        updateActions(timeStep);
    }
 
    virtual void addVehicle(btActionInterface * vehicle);
    virtual void removeVehicle(btActionInterface * vehicle);
    virtual void addCharacter(btActionInterface * character);
    virtual void removeCharacter(btActionInterface * character);
 
    void setSynchronizeAllMotionStates(bool synchronizeAll)
    {
        m_synchronizeAllMotionStates = synchronizeAll;
    }
    bool getSynchronizeAllMotionStates() const
    {
        return m_synchronizeAllMotionStates;
    }
 
    void setApplySpeculativeContactRestitution(bool enable)
    {
        m_applySpeculativeContactRestitution = enable;
    }
 
    bool getApplySpeculativeContactRestitution() const
    {
        return m_applySpeculativeContactRestitution;
    }
 
    virtual void serialize(btSerializer * serializer);
 
    void setLatencyMotionStateInterpolation(bool latencyInterpolation)
    {
        m_latencyMotionStateInterpolation = latencyInterpolation;
    }
    bool getLatencyMotionStateInterpolation() const
    {
        return m_latencyMotionStateInterpolation;
    }
    
    btAlignedObjectArray<btRigidBody*>& getNonStaticRigidBodies()
    {
        return m_nonStaticRigidBodies;
    }
    
    const btAlignedObjectArray<btRigidBody*>& getNonStaticRigidBodies() const
    {
        return m_nonStaticRigidBodies;
    }
};
 
#endif  //BT_DISCRETE_DYNAMICS_WORLD_H