Various collision changes:

- no collision with NCO objects
- better camera control (no turning the camera upside down)
- up/down buttons (shift/ctrl) does not move the player when walking
- eye level adjusted
- various updates


git-svn-id: https://openmw.svn.sourceforge.net/svnroot/openmw/trunk@55 ea6a568a-9f4f-0410-981a-c910a81bb256

bullet/cpp_player.cpp

@@ -34,7 +34,7 @@
 bool g_touchingContact;
 btVector3 g_touchingNormal;
 btScalar g_currentStepOffset;
-float g_stepHeight = 20;
+float g_stepHeight = 5;
 
 // Returns the reflection direction of a ray going 'direction' hitting
 // a surface with normal 'normal'
@@ -293,6 +293,18 @@ void playerStepCallback(btDynamicsWorld* dynamicsWorld, btScalar timeStep)
   // simulation.
   btVector3 walkStep = g_walkDirection * timeStep;
 
+  float len = walkStep.length();
+
+  // In walk mode, it shouldn't matter whether or not we look up or
+  // down. Rotate the vector back to the horizontal plane.
+  if(g_physMode == PHYS_WALK)
+    {
+      walkStep.setZ(0);
+      float len2 = walkStep.length();
+      if(len2 > 0)
+        walkStep *= len/len2;
+    }
+
   // Get the player position
   g_playerPosition = g_playerObject->getWorldTransform().getOrigin();