nalc_game/mods/doors
Auke Kok e4b1c93512 Keys: Allow easy sharing of access without commands
This code adds the key concept to minetest_game, and integrates it
with lockable nodes. Currently supported lockable items are the Steel
Door, the Steel Trapdoor, and the Locked Chest.

The goal of this modification is to introduce a fine-grained multi-
player permission system that is intuitive and usable without any
console or chat commands, and doesn't require extra privileges to
be granted or setup. Keys can also physically be conveyed to other
players, adding to gameplay and adding some personality that is
preferable to console commands or editing formspecs.

A skeleton key can be crafted with 1 gold ingot. Skeleton keys can
then be matched to a lockable node by right-clicking the skeleton
key on a lockable node, which changes the skeleton key to a "key".

Gold was chosen as it's currently a not-so very useful item, and
therefore it's likely that players have some, but aren't really
using it for any purpose.

This key can subsequently used by any player to open or access that
lockable node, including retrieving items from Locked Chests, or
putting items in them.

They key is programmed to fit only the particular locked node it is
programmed to. This is achieved by storing a secret value in both
key and locked node. If this secret value doesn't match, the key
will not open the locked node. This allows many keys to be created
for one chest or door, but a key will only fit one node ever. The
secrets are stored in node, and item meta for the key.

If a locked node is removed, all keys that opened it are no longer
valid. Even if a new door/chest is placed in exactly the same spot,
the old keys will no longer fit that node.

Keys can be smelted back in gold ingots if they are no longer useful.

The method of storing a secret in nodemeta and itemstackmeta is secure
as there is no way for the client to create new items on the server
with a particular secret metadata value. Even if you could possible
create such an itemstack on the client, the server does not ever read
itemstackmeta from a client package.

The patch adds an API that allows other nodes and nodes added by
mods to use the same keys as well. The method how to implement this
is described in game_api.txt. The mod should add 2 callbacks to it's
node definition. Example code is given.

Textures are from PixelBOX, thanks to Gambit.
2016-11-25 03:01:14 +00:00
..
models Fencegate: prevent y-fighting at top. 2016-03-15 16:22:58 +00:00
sounds Doors: Add dedicated sounds for glass doors 2016-06-27 05:32:36 +01:00
textures Textures: Revert many back to RGBA to fix visual bug 2016-11-19 23:45:08 +00:00
depends.txt Make doors not depend on screwdriver. 2015-05-14 14:24:14 +02:00
init.lua Keys: Allow easy sharing of access without commands 2016-11-25 03:01:14 +00:00
license.txt Change WTFPL to MIT (part 3) 2016-09-07 04:44:53 +01:00
README.txt Change WTFPL to MIT (part 3) 2016-09-07 04:44:53 +01:00

Minetest Game mod: doors
========================
See license.txt for license information.

Authors of source code
----------------------
Originally by PilzAdam (MIT)

Modified by BlockMen (MIT): Added sounds, glass doors (glass, obsidian glass) and trapdoor.

Modified by sofar (sofar@foo-projects.org) (MIT):
Added Steel trapdoor.
Re-implemented most of the door algorithms, added meshes, UV wrapped texture.
Added doors API to facilitate coding mods accessing and operating doors.
Added Fence Gate model, code, and sounds.

Various Minetest developers and contributors (MIT)


Authors of media (textures)
---------------------------
Following textures created by Fernando Zapata (CC BY-SA 3.0):
  door_wood.png
  door_wood_a.png
  door_wood_a_r.png
  door_wood_b.png
  door_wood_b_r.png

Following textures created by BlockMen (CC BY-SA 3.0):
  door_trapdoor.png
  door_obsidian_glass_side.png

Following textures created by celeron55 (CC BY-SA 3.0):
  door_glass_a.png
  door_glass_b.png

Following textures created by PenguinDad (CC BY-SA 4.0):
  door_glass.png
  door_obsidian_glass.png

Following textures created by sofar (CC-BY-SA-3.0):
  doors_trapdoor_steel.png
  doors_trapdoor_steel_side.png
  door_trapdoor_side.png

Obsidian door textures by red-001 based on textures by Pilzadam and BlockMen (CC BY-SA 3.0):
  door_obsidian_glass.png

Glass door textures by red-001 based on textures by celeron55 (CC BY-SA 3.0):
  door_glass.png

All other textures (created by PilzAdam) (CC BY-SA 3.0):

Door textures were converted to the new texture map by sofar, paramat and
red-001, under the same license as the originals.


Authors of media (models)
-------------------------
Door 3d models by sofar (CC-BY-SA-3.0)
 - door_a.obj
 - door_b.obj
Fence gate models by sofar (CC-BY-SA-3.0)
 - fencegate_open.obj
 - fencegate_closed.obj


Authors of media (sounds)
-------------------------
Opening-Sound created by CGEffex (CC BY 3.0), modified by BlockMen
  door_open.ogg
Closing-Sound created by bennstir (CC BY 3.0)
  door_close.ogg
fencegate_open.ogg:
  http://www.freesound.org/people/mhtaylor67/sounds/126041/ - (CC0 1.0)
fencegate_close.ogg:
  http://www.freesound.org/people/BarkersPinhead/sounds/274807/ - (CC-BY-3.0)
  http://www.freesound.org/people/rivernile7/sounds/249573/ - (CC-BY-3.0)
Steel door sounds open & close (CC-BY-3.0) by HazMatt
  - http://www.freesound.org/people/HazMattt/sounds/187283/
  doors_steel_door_open.ogg
  doors_steel_door_close.ogg
doors_glass_door_open.ogg, doors_glass_door_close.ogg:
  https://www.freesound.org/people/SkeetMasterFunk69/sounds/235546/ (CC0 1.0)