Add function to get the hex color from a dye name

(oh, and https://www.youtube.com/watch?v=OEVFbrEv83w too)

init.lua

@@ -630,6 +630,19 @@ function unifieddyes.getpaletteidx(color, palette_type)
 	end
 end
 
+function unifieddyes.get_color_from_dye_name(name)
+	if name == "dye:black" then
+		return "000000"
+	elseif name == "dye:white" then
+		return "ffffff"
+	end
+	local item = minetest.registered_items[name]
+	if not item then return end
+	local inv_image = item.inventory_image
+	if not inv_image then return end
+	return string.match(inv_image,"colorize:#(......):200")
+end
+
 -- punch-to-recolor using the airbrush
 
 function unifieddyes.on_airbrush(itemstack, player, pointed_thing)
@@ -640,8 +653,28 @@ function unifieddyes.on_airbrush(itemstack, player, pointed_thing)
 		painting_with = unifieddyes.player_current_dye[player_name]
 	end
 
+	if not painting_with then
+		minetest.chat_send_player(player_name, "*** You need to set a color first.")
+		minetest.chat_send_player(player_name, "*** Right-click any random node to open the color selector,")
+		minetest.chat_send_player(player_name, "*** or shift+right-click a colorized node to use its color.")
+		minetest.chat_send_player(player_name, "*** Be sure to click \"Accept\", or the color you select will be ignored.")
+		return
+	end
+
 	local pos = minetest.get_pointed_thing_position(pointed_thing)
-	if not pos then return end
+	if not pos then
+		local look_angle = player:get_look_vertical()
+		if look_angle > -1.55 then
+			minetest.chat_send_player(player_name, "*** No node selected")
+		else
+			local hexcolor = unifieddyes.get_color_from_dye_name(painting_with)
+			local r = tonumber(string.sub(hexcolor,1,2),16)
+			local g = tonumber(string.sub(hexcolor,3,4),16)
+			local b = tonumber(string.sub(hexcolor,5,6),16)
+			player:set_sky({r=r,g=g,b=b,a=255},"plain")
+		end
+		return
+	end
 
 	local node = minetest.get_node(pos)
 	local def = minetest.registered_items[node.name]
@@ -652,14 +685,6 @@ function unifieddyes.on_airbrush(itemstack, player, pointed_thing)
 		return
 	end
 
-	if not painting_with then
-		minetest.chat_send_player(player_name, "*** You need to set a color first.")
-		minetest.chat_send_player(player_name, "*** Right-click any random node to open the color selector,")
-		minetest.chat_send_player(player_name, "*** or shift+right-click a colorized node to use its color.")
-		minetest.chat_send_player(player_name, "*** Be sure to click \"Accept\", or the color you select will be ignored.")
-		return
-	end
-
 	if not (def.groups and def.groups.ud_param2_colorable and def.groups.ud_param2_colorable > 0) then
 		minetest.chat_send_player(player_name, "*** That node can't be colored.")
 		return
@@ -1102,9 +1127,9 @@ minetest.register_tool("unifieddyes:airbrush", {
 minetest.register_craft( {
 	output = "unifieddyes:airbrush",
 	recipe = {
-		{ "default:gold_ingot", "",                    "bucket:bucket_empty" },
-		{ "",                   "default:steel_ingot", ""                    },
-		{ "",                   "",                    "default:steel_ingot" }
+		{ "basic_materials:brass_ingot", "",           "basic_materials:plastic_sheet" },
+		{ "",                   "default:steel_ingot", ""                              },
+		{ "",                   "",                    "default:steel_ingot"           }
 	},
 })