fixed the bug that GetVmapHeight returns incorrect height on terrains(flying units fall below map etc)

also unlocked max ray lenght for getHeight, by default it's 10 yards

--HG--
branch : trunk

src/game/Creature.cpp

@@ -1477,7 +1477,7 @@ bool Creature::FallGround()
 
     float x, y, z;
     GetPosition(x, y, z);
-    float ground_Z = GetMap()->GetVmapHeight(x, y, z, true);
+    float ground_Z = GetMap()->GetVmapHeight(x, y, z);
     if (fabs(ground_Z - z) < 0.1f)
         return false;
 

src/game/Map.cpp

@@ -1994,24 +1994,23 @@ float Map::GetHeight(float x, float y, float z, bool pUseVmaps) const
     }
 }
 
-float Map::GetVmapHeight(float x, float y, float z, bool useMaps) const
+float Map::GetVmapHeight(float x, float y, float z) const
 {
     float mapHeight;
-    float vmapHeight;
-    if (useMaps)
-    {
-        mapHeight = GetHeight(x, y, z, false);
-        if (fabs(mapHeight - z) < 0.1)
-            return mapHeight;
-    }
-    else
-        mapHeight = INVALID_HEIGHT;
+
+    mapHeight = GetHeight(x, y, z, false);
+    if (fabs(mapHeight - z) < 0.1)
+        return mapHeight;
+
     VMAP::IVMapManager* vmgr = VMAP::VMapFactory::createOrGetVMapManager();
-    if (vmgr->isLineOfSightCalcEnabled())
-        bool result = vmgr->getObjectHitPos(GetId(), x, y, z + 2.0f, x, y, mapHeight, x, y, vmapHeight, 0);
-    else
-        return INVALID_HEIGHT;
-    return vmapHeight;
+    if (!vmgr->isLineOfSightCalcEnabled())
+        return mapHeight;
+
+    float vmapHeight = vmgr->getHeight(GetId(), x, y, z + 2.0f, z + 2.0f - mapHeight);
+    if (vmapHeight > VMAP_INVALID_HEIGHT_VALUE)
+        return vmapHeight;
+
+    return mapHeight;
 }
 
 uint16 Map::GetAreaFlag(float x, float y, float z) const

src/game/Map.h

@@ -333,7 +333,7 @@ class TRINITY_DLL_SPEC Map : public GridRefManager<NGridType>, public Trinity::O
         // some calls like isInWater should not use vmaps due to processor power
         // can return INVALID_HEIGHT if under z+2 z coord not found height
         float GetHeight(float x, float y, float z, bool pCheckVMap=true) const;
-        float GetVmapHeight(float x, float y, float z, bool useMaps) const;
+        float GetVmapHeight(float x, float y, float z) const;
         bool IsInWater(float x, float y, float z, float min_depth = 2.0f) const;
 
         ZLiquidStatus getLiquidStatus(float x, float y, float z, uint8 ReqLiquidType, LiquidData *data = 0) const;

src/game/Player.cpp

@@ -4476,7 +4476,7 @@ bool Player::FallGround(uint8 FallMode)
 
     float x, y, z;
     GetPosition(x, y, z);
-    float ground_Z = GetMap()->GetVmapHeight(x, y, z, true);
+    float ground_Z = GetMap()->GetVmapHeight(x, y, z);
     float z_diff = 0.0f;
     if ((z_diff = fabs(ground_Z - z)) < 0.1f)
         return false;

src/game/Spell.cpp

@@ -5177,7 +5177,7 @@ SpellCastResult Spell::CheckCast(bool strict)
                     {
                         float x, y, z;
                         m_caster->GetPosition(x, y, z);
-                        float ground_Z = m_caster->GetMap()->GetVmapHeight(x, y, z, true);
+                        float ground_Z = m_caster->GetMap()->GetVmapHeight(x, y, z);
                         if (fabs(ground_Z - z) < 0.1f)
                             return SPELL_FAILED_DONT_REPORT;
                         break;