Merge pull request #97 from DavidWyand-GG/issue96-PhysXCrashOnObjectUpdate

Fix for Issue #96 for DAE updating crash

Engine/source/T3D/physics/physicsWorld.h

@@ -42,6 +42,8 @@ class PhysicsWorld
 {
 protected:
 
+   Signal<void()> mStaticChangedSignal;
+
    Signal<void()> mUpdateSignal;
 
    /// The current gravity force.
@@ -58,6 +60,9 @@ public:
    /// 
    Signal<void()>& getUpdateSignal() { return mUpdateSignal; }
 
+   // Called when a static body in the scene has been removed.
+   Signal<void()>& getStaticChangedSignal() { return mStaticChangedSignal; }
+   
    /// Overloaded to do debug drawing.
    ///
    /// It is assumed the GFX state is setup prior to this call for

Engine/source/T3D/physics/physx/pxPlayer.cpp

@@ -53,7 +53,8 @@ void PxPlayer::_releaseController()
    if ( mController )
    {
       mController->getActor()->userData = NULL;
-	   mWorld->releaseController( *mController );
+      mWorld->getStaticChangedSignal().remove( this, &PxPlayer::_onStaticChanged );
+      mWorld->releaseController( *mController );
       mController = NULL;
    }
 }
@@ -99,6 +100,8 @@ void PxPlayer::init( const char *type,
       //mOriginOffset = 1.0f;
    }
 
+    mWorld->getStaticChangedSignal().notify( this, &PxPlayer::_onStaticChanged );
+
    // Put the kinematic actor on group 29.
    NxActor *kineActor = mController->getActor();
    kineActor->setGroup( 29 );
@@ -110,6 +113,11 @@ void PxPlayer::init( const char *type,
    kineActor->userData = &mUserData;
 }
 
+void PxPlayer::_onStaticChanged()
+{
+    mController->reportSceneChanged();
+}
+
 void PxPlayer::_onPhysicsReset( PhysicsResetEvent reset )
 {
    // The PhysX controller will crash out if it doesn't clear its

Engine/source/T3D/physics/physx/pxPlayer.h

@@ -71,6 +71,8 @@ protected:
 
    void _onPhysicsReset( PhysicsResetEvent reset );
 
+   void _onStaticChanged();
+
 public:
    
 	PxPlayer();

Engine/source/T3D/physics/physx/pxWorld.cpp

@@ -569,9 +569,11 @@ void PxWorld::_releaseQueues()
    mReleaseJointQueue.clear();
 
    // Now release any actors still pending in the queue.
+   bool staticChanged = false;
    for ( S32 i = 0; i < mReleaseActorQueue.size(); i++ )
    {
-      NxActor *currActor = mReleaseActorQueue[i];     
+      NxActor *currActor = mReleaseActorQueue[i];
+      staticChanged |= !currActor->isDynamic();
       mScene->releaseActor( *currActor );
    }
 
@@ -618,6 +620,9 @@ void PxWorld::_releaseQueues()
       mScene->releaseFluid( *currFluid );
    }
    mReleaseFluidQueue.clear();
+
+   if ( staticChanged )
+    mStaticChangedSignal.trigger();
 }
 
 void PxWorld::setEnabled( bool enabled )