*Fix Creature::FallGround. By Silver1ce.

--HG--
branch : trunk

src/game/Creature.cpp

@@ -1676,16 +1676,15 @@ bool Creature::FallGround()
     if (getDeathState() == DEAD_FALLING)
         return false;
 
-    // Let's do with no vmap because no way to get far distance with vmap high call
-    float tz = GetMap()->GetHeight(GetPositionX(), GetPositionY(), GetPositionZ(), false);
-
-    // Abort too if the ground is very near
-    if (fabs(GetPositionZ() - tz) < 0.1f)
+	float x, y, z;
+	GetPosition(x, y, z);
+	float ground_Z = GetMap()->GetVmapHeight(x, y, z, true);
+    if (fabs(ground_Z - z) < 0.1f)
         return false;
 
     Unit::setDeathState(DEAD_FALLING);
-    GetMotionMaster()->MovePoint(0, GetPositionX(), GetPositionY(), tz);
-    Relocate(GetPositionX(), GetPositionY(), tz);
+    GetMotionMaster()->MovePoint(0, x, y, ground_Z);
+    Relocate(x, y, ground_Z);
     return true;
 }
 

src/game/Map.cpp

@@ -1265,6 +1265,26 @@ 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 mapHeight;
+	float vmapHeight;
+	if (useMaps)
+	{
+		mapHeight = GetHeight(x, y, z, false);
+		if (fabs(mapHeight - z) < 0.1)
+			return mapHeight;
+	}
+	else
+		mapHeight = INVALID_HEIGHT;
+	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;
+}
+
 uint16 Map::GetAreaFlag(float x, float y ) const
 {
     //local x,y coords

src/game/Map.h

@@ -183,6 +183,7 @@ 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;
         bool IsInWater(float x, float y, float z) const;    // does not use z pos. This is for future use
 
         uint16 GetAreaFlag(float x, float y ) const;