When using bullet physics, it ensures the player does not move when the world sim is paused, as well as correcting the surface check when walking to test against the max run angle.

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

@@ -71,6 +71,7 @@ void BtPlayer::init( const char *type,
    mObject = obj;
    mWorld = (BtWorld*)world;
 
+   mSlopeAngle = runSurfaceCos;
    mStepHeight = stepHeight;
 
    //if ( dStricmp( type, "Capsule" ) == 0 )
@@ -102,6 +103,17 @@ Point3F BtPlayer::move( const VectorF &disp, CollisionList &outCol )
 {
    AssertFatal( mGhostObject, "BtPlayer::move - The controller is null!" );
 
+   if (!mWorld->isEnabled())
+   {
+      btTransform currentTrans = mGhostObject->getWorldTransform();
+      btVector3 currentPos = currentTrans.getOrigin();
+
+      Point3F returnPos = btCast<Point3F>(currentPos);
+     
+      returnPos.z -= mOriginOffset;
+      return returnPos;
+   }
+
    // First recover from any penetrations from the previous tick.
    U32 numPenetrationLoops = 0;
    bool touchingContact = false;
@@ -305,16 +317,9 @@ bool BtPlayer::_sweep( btVector3 *inOutCurrPos, const btVector3 &disp, Collision
          col.normal = btCast<Point3F>( callback.m_hitNormalWorld );
          col.object = PhysicsUserData::getObject( callback.m_hitCollisionObject->getUserPointer() );
 
-         if (disp.z() < 0.0f)
-         {
-            // We're sweeping down as part of the stepping routine.    In this
-            // case we want to have the collision normal only point in the opposite direction.
-            // i.e. up  If we include the sideways part of the normal then the Player class
-            // velocity calculations using this normal will affect the player's forwards
-            // momentum.  This is especially noticable on stairs as the rounded bottom of
-            // the capsule slides up the corner of a stair.
-            col.normal.set(0.0f, 0.0f, 1.0f);
-         }
+         F32 vd = col.normal.z;
+         if (vd < mSlopeAngle)
+            return false;
       }
 
       return true;

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

@@ -57,6 +57,10 @@ protected:
    ///
    F32 mOriginOffset;
 
+   ///
+   F32 mSlopeAngle;
+   ///
+
    ///
    F32 mStepHeight;
    ///