Makes vehicles work with the physics plugins.

Makes vehicles create a basic physics body when using one of the physics plugins so that they can collide with other physics-enabled objects.

Based on @rextimmy 's work.

Engine/source/T3D/physics/bullet/btBody.cpp

@@ -378,3 +378,25 @@ void BtBody::setSimulationEnabled( bool enabled )
 
    mIsEnabled = enabled;
 }
+
+void BtBody::moveKinematicTo(const MatrixF &transform)
+{
+   AssertFatal(mActor, "BtBody::moveKinematicTo - The actor is null!");
+
+   U32 bodyflags = mActor->getCollisionFlags();
+   const bool isKinematic = bodyflags & BF_KINEMATIC;
+   if (!isKinematic)
+   {
+      Con::errorf("BtBody::moveKinematicTo is only for kinematic bodies.");
+      return;
+   }
+
+   if (mCenterOfMass)
+   {
+      MatrixF xfm;
+      xfm.mul(transform, *mCenterOfMass);
+      mActor->setCenterOfMassTransform(btCast<btTransform>(xfm));
+   }
+   else
+      mActor->setCenterOfMassTransform(btCast<btTransform>(transform));
+}

Engine/source/T3D/physics/bullet/btBody.h

@@ -111,6 +111,8 @@ public:
                               F32 staticFriction );
    virtual void applyCorrection( const MatrixF &xfm );
    virtual void applyImpulse( const Point3F &origin, const Point3F &force );
+   virtual void moveKinematicTo(const MatrixF &xfm);
+
 };
 
 #endif // _T3D_PHYSICS_BTBODY_H_

Engine/source/T3D/physics/physicsBody.h

@@ -113,6 +113,10 @@ public:
 
    ///
    virtual void applyImpulse( const Point3F &origin, const Point3F &force ) = 0;
+
+   ///
+   virtual void moveKinematicTo(const MatrixF &xfm) = 0;
+
 };
 
 

Engine/source/T3D/physics/physx3/px3Body.cpp

@@ -417,3 +417,22 @@ void Px3Body::applyImpulse( const Point3F &origin, const Point3F &force )
 
 }
 
+void Px3Body::moveKinematicTo(const MatrixF &transform)
+{
+   AssertFatal(mActor, "Px3Body::moveKinematicTo - The actor is null!");
+
+   const bool isKinematic = mBodyFlags & BF_KINEMATIC;
+   if (!isKinematic)
+   {
+      Con::errorf("Px3Body::moveKinematicTo is only for kinematic bodies.");
+      return;
+   }
+
+   mWorld->lockScene();
+
+   physx::PxRigidDynamic *actor = mActor->is<physx::PxRigidDynamic>();
+   actor->setKinematicTarget(px3Cast<physx::PxTransform>(transform));
+
+   mWorld->unlockScene();
+}
+

Engine/source/T3D/physics/physx3/px3Body.h

@@ -117,6 +117,8 @@ public:
                               F32 staticFriction );
    virtual void applyCorrection( const MatrixF &xfm );
    virtual void applyImpulse( const Point3F &origin, const Point3F &force );
+   virtual void moveKinematicTo(const MatrixF &xfm);
+
 };
 
 #endif // _PX3BODY_H_

Engine/source/T3D/physics/physx3/px3World.cpp

@@ -62,7 +62,8 @@ Px3World::Px3World(): mScene( NULL ),
    mIsEnabled( false ),
    mEditorTimeScale( 1.0f ),
    mAccumulator( 0 ),
-   mControllerManager( NULL )
+   mControllerManager(NULL),
+   mIsSceneLocked(false)
 {
 }
 
@@ -335,6 +336,62 @@ void Px3World::releaseWriteLock()
 	//AssertFatal( mScene->isWritable(), "PhysX3World::releaseWriteLock() - We should have been writable now!" );
 }
 
+void Px3World::lockScenes()
+{
+   Px3World *world = dynamic_cast<Px3World*>(PHYSICSMGR->getWorld("server"));
+
+   if (world)
+      world->lockScene();
+
+   world = dynamic_cast<Px3World*>(PHYSICSMGR->getWorld("client"));
+
+   if (world)
+      world->lockScene();
+}
+
+void Px3World::unlockScenes()
+{
+   Px3World *world = dynamic_cast<Px3World*>(PHYSICSMGR->getWorld("server"));
+
+   if (world)
+      world->unlockScene();
+
+   world = dynamic_cast<Px3World*>(PHYSICSMGR->getWorld("client"));
+
+   if (world)
+      world->unlockScene();
+}
+
+void Px3World::lockScene()
+{
+   if (!mScene)
+      return;
+
+   if (mIsSceneLocked)
+   {
+      Con::printf("Px3World: Attempting to lock a scene that is already locked.");
+      return;
+   }
+
+   mScene->lockWrite();
+   mIsSceneLocked = true;
+}
+
+void Px3World::unlockScene()
+{
+   if (!mScene)
+      return;
+
+   if (!mIsSceneLocked)
+   {
+      Con::printf("Px3World: Attempting to unlock a scene that is not locked.");
+      return;
+   }
+
+   mScene->unlockWrite();
+   mIsSceneLocked = false;
+}
+
 bool Px3World::castRay( const Point3F &startPnt, const Point3F &endPnt, RayInfo *ri, const Point3F &impulse )
 {
     

Engine/source/T3D/physics/physx3/px3World.h

@@ -56,6 +56,7 @@ protected:
 	bool mIsEnabled;
 	bool mIsSimulating;
 	bool mIsServer;
+   bool mIsSceneLocked;
 	U32 mTickCount;
 	ProcessList *mProcessList;
 	F32 mEditorTimeScale;
@@ -96,11 +97,15 @@ public:
 	void releaseWriteLock();
 	bool isServer(){return mIsServer;}
 	physx::PxController* createController( physx::PxControllerDesc &desc );
+   void lockScene();
+   void unlockScene();
 	//static
 	static bool restartSDK( bool destroyOnly = false, Px3World *clientWorld = NULL, Px3World *serverWorld = NULL );
 	static void releaseWriteLocks();
 	static physx::PxCooking *getCooking();
    static void setTiming(F32 stepTime,U32 maxIterations);
+   static void lockScenes();
+   static void unlockScenes();
 };
 
 #endif // _PX3WORLD_H_