First mock-up

init.lua

@@ -0,0 +1,83 @@
+doc = {}
+
+doc.VERSION = {}
+doc.VERSION.MAJOR = 0
+doc.VERSION.MINOR = 1
+doc.VERSION.PATCH = 0
+doc.VERSION.STRING = "0.1.0"
+
+
+doc.data = {}
+doc.data.categories = {}
+doc.data.entries = {}
+
+
+function doc.new_category(id, def)
+	if doc.data.categories[id] ~= nil and id ~= nil then
+		doc.data.categories[id] = def
+	end
+end
+
+function doc.new_entry(def)
+	if doc.data.entries[id] ~= nil and id ~= nil then
+		doc.data.entries[id] = def
+	end
+end
+
+function doc.show_doc(playername)
+	local formspec = doc.formspec_core()..doc.formspec_main()
+	minetest.show_formspec(playername, "doc:main", formspec)
+end
+
+function doc.formspec_core(tab)
+	if tab == nil then tab = 1 else tab = tostring(tab) end
+	return "size[12,9]tabheader[0,0;doc_header;Main,Category,Entry;"..tab..";true;false]"
+end
+
+function doc.formspec_main()
+	return "label[0,1;Main]"
+end
+
+function doc.formspec_category()
+	return "label[0,1;Category]"
+end
+
+function doc.formspec_entry()
+	return "label[0,1;Entry]"
+end
+
+function doc.process_form(player,formname,fields)
+	local playername = player:get_player_name()
+	--[[ process clicks on the tab header ]]
+	if(formname == "doc:main" or formname == "doc:category" or formname == "doc:entry") then
+		if fields.doc_header ~= nil then
+			local tab = tonumber(fields.doc_header)
+			local formspec, subformname, contents
+			if(tab==1) then
+				contents = doc.formspec_main()
+				subformname = "main"
+			elseif(tab==2) then
+				contents = doc.formspec_category()
+				subformname = "category"
+			elseif(tab==3) then
+				contents = doc.formspec_entry()
+				subformname = "entry"
+			end
+			formspec = doc.formspec_core(tab)..contents
+			minetest.show_formspec(playername, "doc:" .. subformname, formspec)
+			return
+		end
+	end
+end
+
+minetest.register_on_player_receive_fields(doc.process_form)
+
+minetest.register_chatcommand("doc", {
+	params = "",
+	description = "Show in-game documentation system.",
+	privs = {},
+	func = function(playername, param)
+		doc.show_doc(playername)
+	end,
+	}
+)