Add extended tooltips

mods/HELP/tt/init.lua

@@ -0,0 +1,55 @@
+local S = minetest.get_translator("tt")
+
+tt = {}
+tt.COLOR_DEFAULT = "#d0ffd0"
+tt.COLOR_DANGER = "#ffff00"
+tt.COLOR_GOOD = "#00ff00"
+
+-- API
+tt.registered_snippets = {}
+
+tt.register_snippet = function(func)
+	table.insert(tt.registered_snippets, func)
+end
+
+-- Register core snippets
+
+dofile(minetest.get_modpath(minetest.get_current_modname()).."/snippets_core.lua")
+dofile(minetest.get_modpath(minetest.get_current_modname()).."/snippets_builtin.lua")
+
+-- Apply item description updates
+
+local function append_snippets()
+	for itemstring, def in pairs(minetest.registered_items) do
+		if itemstring ~= "" and itemstring ~= "air" and itemstring ~= "ignore" and itemstring ~= "unknown" and def ~= nil and def.description ~= nil and def.description ~= "" and def._tt_ignore ~= true then
+			local desc = def.description
+			local orig_desc = desc
+			local first = true
+			-- Apply snippets
+			for s=1, #tt.registered_snippets do
+				local str, snippet_color = tt.registered_snippets[s](itemstring)
+				if snippet_color == nil then
+					snippet_color = tt.COLOR_DEFAULT
+				elseif snippet_color == false then
+					snippet_color = false
+				end
+				if str then
+					if first then
+						first = false
+					end
+					desc = desc .. "\n"
+					if snippet_color then
+						desc = desc .. minetest.colorize(snippet_color, str)
+					else
+						desc = desc .. str
+					end
+				end
+			end
+			if desc ~= def.description then
+				minetest.override_item(itemstring, { description = desc, _tt_original_description = orig_desc })
+			end
+		end
+	end
+end
+
+minetest.register_on_mods_loaded(append_snippets)