public bool IsWorldIndexFreeOfObstacles(Vector2 index)
{
IContainer containerAtIndex = GetContainerAtIndex(index);
Door doorAtIndex = GetDoorAtIndex(index);
ICreature creatureAtIndex = GetCreatureAtIndex(index);
if (containerAtIndex == null && doorAtIndex == null && creatureAtIndex == null)
return true;
else
return false;
}