Document snippets buttons and allow disabling

README.md

@@ -4,7 +4,21 @@ A way for admins to run and save lua snippets.
 
 ## Chatcommands
 
- - `/snippets`: Open the snippets console.
+ - `/snippets`: Open the snippets console. This allows you to edit and run Lua
+   snippets.
+
+## Nodes
+
+This mod registers a snippets button node that runs a snippet when pressed. The
+snippet will be called with the player name as its first argument. For example,
+you can do `local name = ...` inside a snippet to get the name of the player
+that pressed the button.
+
+Buttons don't appear in the creative inventory, if you want them to you will
+need to run `/giveme snippets:button`.
+
+If you don't want the buttons at all, you can add
+`snippets.enable_buttons = false` to your minetest.conf.
 
 ## API
 

init.lua

@@ -20,4 +20,7 @@ dofile(modpath .. '/forms.lua')
 dofile(modpath .. '/console.lua')
 
 -- Load "snippet buttons"
-dofile(modpath .. '/nodes.lua')
+local enable_buttons = minetest.settings:get_bool('snippets.enable_buttons')
+if enable_buttons or enable_buttons == nil then
+    dofile(modpath .. '/nodes.lua')
+end

nodes.lua

@@ -6,7 +6,7 @@ minetest.register_node('snippets:button', {
     description = 'Snippets button',
     tiles = {'default_steel_block.png', 'default_steel_block.png',
         'default_steel_block.png^snippets_button.png'},
-    groups = {cracky = 2},
+    groups = {cracky = 2, not_in_creative_inventory = 1},
 
     on_construct = function(pos)
         local meta = minetest.get_meta(pos)

settingtypes.txt

@@ -0,0 +1,2 @@
+# Enables snippets buttons which allow all players to run a specified snippet.
+snippets.enable_buttons (Register snippets button nodes) bool true