the most advanced system of chest and doors, but perhaps also the worst.
sourcecode:https://github.com/pandaro/closed_by_key
Code license: GPLv3;
Texture license: WTFPL;
Depends: default;
More info:readme.txt in mod;
Contributor:0gb.us,PilzAdam.
This mod add:
CHEST and DOOR closed by KEY, an EMPTY KEYRING for store keys in a FULL KEYRING.And a KEY-MANAGER to handle them
MAJOR CHANGE OF LATEST VERSION:(see full changelog in readme.txt)
closed_by_key_v0.6 -rename my mod, now called: "closed by key";
-open door and chest with rightclick;
-add disguised chest and door: very mimetic, but destructable;
-add mese chest and door: you can not destroy them;
-add on explode drop item if the chest is destructable;
-texture update a little bit;
-push code on GITHUB;
-minor change.

CRAFTING: full crafting guide in readme!!!!
O=empty slot
S=steel ingot
C=chest
D=dry shrub
M=Mese
-Steel chest: -Empty keyring: -Key-manager: -Steel door
SSS DOD M -SS
SOS ODO C -SS
SSS DOD -SS
How to:
CHEST:
-place the chest, you find the key in your inventory;
-If you remove the chest:Now is the same chest, maintains key
-if you lose the key: forget your chest!
DOOR:
-place the door, you find the key in your inventory;
-If you remove the door:Now is the same door, maintains key
-if you lose the key: forget your door!
KEY:
If the correct key is in your inventory or in the chest: you can open the chest.
KEYRING:
Merge multiple keys on a keyring.
KEY-MANAGER:
If a KEY is in the slot in the middle and at least one steel ingot in the KEY-MANAGER main menu:
press "copy" to copy the key(
If a EMPTY KEYRING is in the slot in the middle:
press "make" to merge all the keys of the key inventory-manager on a keychain;
If a FULL KEYRING is in the slot in the middle:
-press "unmake" to undo.
-press "copy" to copy all the keyring(you need 1 steel ingot for each key)
So: download and try it.
.zip
TO DO:
-maybe:key colour(maybe not);
-better crafting;
-much more.