*Add some distance check functions. By VladimirMangos.

--HG--
branch : trunk

src/game/Unit.cpp

@@ -3562,7 +3562,7 @@ Spell* Unit::FindCurrentSpellBySpellId(uint32 spell_id) const
     return NULL;
 }
 
-bool Unit::isInFront(Unit const* target, float distance,  float arc) const
+bool Unit::isInFrontInMap(Unit const* target, float distance,  float arc) const
 {
     return IsWithinDistInMap(target, distance) && HasInArc( arc, target );
 }
@@ -3572,7 +3572,7 @@ void Unit::SetInFront(Unit const* target)
     SetOrientation(GetAngle(target));
 }
 
-bool Unit::isInBack(Unit const* target, float distance, float arc) const
+bool Unit::isInBackInMap(Unit const* target, float distance, float arc) const
 {
     return IsWithinDistInMap(target, distance) && !HasInArc( 2 * M_PI - arc, target );
 }