Some terrain fixes

apps/openmw/mwrender/renderingmanager.cpp

@@ -1003,7 +1003,8 @@ void RenderingManager::resetCamera()
 
 float RenderingManager::getTerrainHeightAt(Ogre::Vector3 worldPos)
 {
-    assert(mTerrain);
+    if (!mTerrain || !mTerrain->getVisible())
+        return -std::numeric_limits<float>::max();
     return mTerrain->getHeightAt(worldPos);
 }
 

apps/openmw/mwworld/worldimp.cpp

@@ -1027,13 +1027,10 @@ namespace MWWorld
             return;
         }
 
-        if (ptr.getCell()->isExterior())
-        {
-            float terrainHeight = mRendering->getTerrainHeightAt(pos);
+        float terrainHeight = mRendering->getTerrainHeightAt(pos);
 
-            if (pos.z < terrainHeight)
-                pos.z = terrainHeight;
-        }
+        if (pos.z < terrainHeight)
+            pos.z = terrainHeight;
 
         ptr.getRefData().getPosition().pos[2] = pos.z + 20; // place slightly above. will snap down to ground with code below
 

components/terrain/quadtreenode.cpp

@@ -46,12 +46,12 @@ namespace
 
     // Algorithm described by Hanan Samet - 'Neighbour Finding in Quadtrees'
     // http://www.cs.umd.edu/~hjs/pubs/SametPRIP81.pdf
-    Terrain::QuadTreeNode* searchNeighbourRecursive (Terrain::QuadTreeNode* currentNode, Terrain::Direction dir)
+    QuadTreeNode* searchNeighbourRecursive (QuadTreeNode* currentNode, Direction dir)
     {
         if (!currentNode->getParent())
             return NULL; // Arrived at root node, the root node does not have neighbours
 
-        Terrain::QuadTreeNode* nextNode;
+        QuadTreeNode* nextNode;
         if (adjacent(currentNode->getDirection(), dir))
             nextNode = searchNeighbourRecursive(currentNode->getParent(), dir);
         else

components/terrain/storage.hpp

@@ -14,6 +14,8 @@ namespace Terrain
     /// We keep storage of terrain data abstract here since we need different implementations for game and editor
     class Storage
     {
+    public:
+        virtual ~Storage() {}
     private:
         virtual ESM::Land* getLand (int cellX, int cellY) = 0;
         virtual const ESM::LandTexture* getLandTexture(int index, short plugin) = 0;