Noob in trouble!

[DRedshot]

This is a long-shot, but try it anyways:

Code: (Select All)

void OnStart()
{
AddUseItemCallback("", "key_1", "mansion_3", "UsedKeyOnDoor", true);
SetEntityCallbackFunc("key_1", "OnPickup");
}

void UsedKeyOnDoor(string &in item, string &in entity)
{
SetSwingDoorLocked(entity, false, true);
PlaySoundAtEntity("", "unlock_door.snt", entity, 0, false);
RemoveItem(item);
AddDebugMessage("Key has been used, is door unlocked?" , false);
}

Check if the debug message shows up when you unlock the door. If it doesn't, there is a problem with the AddUseItemCallback, if it does, the problem is related to the SetSwingDoorLocked function.
Also, make sure you are hitting enter when you type the entity name in the Level Editor. It sounds like an obvious thing to say, but so many times I have had these mysterious problems because I forgot to hit enter and the entities name doesn't register.