Hey guys, Basically I placed a building, now I want to define the door (or doors) of this building as "locked." In addition, I want to place a key and say that only if the player has this key, he can unlock it.   I assume it should be easily possible, but whenever I place a building I can't seem to specifically choose the door and the "attribute" of the building don't make it straightforward also. Could you help me? Though I'm a modding newbie I really did do the best research I could before resorting to posting here.