Move doc for dyes to game_api.txt

game_api.txt

@@ -212,3 +212,66 @@ that use param2 otherwise (e.g. facedir)).
 
 If the node is in the leafdecay_drop group then it will always be dropped as an
 item.
+
+Dyes
+----
+To make recipes that will work with any dye ever made by anybody, define
+them based on groups. You can select any group of groups, based on your need for
+amount of colors.
+
+#Color groups
+-------------
+Base color groups:
+- basecolor_white
+- basecolor_grey
+- basecolor_black
+- basecolor_red
+- basecolor_yellow
+- basecolor_green
+- basecolor_cyan
+- basecolor_blue
+- basecolor_magenta
+
+Extended color groups (* = equal to a base color):
+* excolor_white
+- excolor_lightgrey
+* excolor_grey
+- excolor_darkgrey
+* excolor_black
+* excolor_red
+- excolor_orange
+* excolor_yellow
+- excolor_lime
+* excolor_green
+- excolor_aqua
+* excolor_cyan
+- excolor_sky_blue
+* excolor_blue
+- excolor_violet
+* excolor_magenta
+- excolor_red_violet
+
+The whole unifieddyes palette as groups:
+- unicolor_<excolor>
+For the following, no white/grey/black is allowed:
+- unicolor_medium_<excolor>
+- unicolor_dark_<excolor>
+- unicolor_light_<excolor>
+- unicolor_<excolor>_s50
+- unicolor_medium_<excolor>_s50
+- unicolor_dark_<excolor>_s50
+
+Example of one shapeless recipe using a color group:
+minetest.register_craft({
+	type = "shapeless",
+	output = '<mod>:item_yellow',
+	recipe = {'<mod>:item_no_color', 'group:basecolor_yellow'},
+})
+
+#Color lists
+------------
+dye.basecolors
+^ Array containing the names of available base colors
+
+dye.excolors
+^ Array containing the names of the available extended colors