Common/Maps: Reduce differences between 3.3.5 and 6.x branches

Partially port 1347d7cf7a too

src/common/Collision/DynamicTree.cpp

@@ -248,7 +248,7 @@ bool DynamicMapTree::isInLineOfSight(float x1, float y1, float z1, float x2, flo
 
 float DynamicMapTree::getHeight(float x, float y, float z, float maxSearchDist, uint32 phasemask) const
 {
-    G3D::Vector3 v(x, y, z);
+    G3D::Vector3 v(x, y, z + 0.5f);
     G3D::Ray r(v, G3D::Vector3(0, 0, -1));
     DynamicTreeIntersectionCallback callback(phasemask);
     impl->intersectZAllignedRay(r, callback, maxSearchDist);

src/common/Collision/Models/ModelInstance.cpp

@@ -19,7 +19,6 @@
 #include "ModelInstance.h"
 #include "WorldModel.h"
 #include "MapTree.h"
-#include "VMapDefinitions.h"
 
 using G3D::Vector3;
 using G3D::Ray;

src/common/Collision/Models/WorldModel.cpp

@@ -17,7 +17,6 @@
  */
 
 #include "WorldModel.h"
-#include "ModelInstance.h"
 #include "VMapDefinitions.h"
 #include "MapTree.h"
 

src/server/game/Movement/MovementGenerators/RandomMovementGenerator.cpp

@@ -61,7 +61,7 @@ void RandomMovementGenerator<Creature>::_setRandomLocation(Creature* creature)
         // Limit height change
         const float distanceZ = float(rand_norm()) * travelDistZ/2.0f;
         destZ = respZ + distanceZ;
-        float levelZ = map->GetWaterOrGroundLevel(destX, destY, destZ-2.0f);
+        float levelZ = map->GetWaterOrGroundLevel(destX, destY, destZ-2.5f);
 
         // Problem here, we must fly above the ground and water, not under. Let's try on next tick
         if (levelZ >= destZ)