allow re displaying and reloading of announcemenet

announcement/init.lua

@@ -1,30 +1,52 @@
 local filepath = minetest.get_worldpath() .. "/announcement.txt"
 local an_data = nil
+local fsn = "announcement:billboard"
 
-local fh,err = io.open(filepath,'rb') -- use binary in case of UTF ?
+local reload = function()
+	local fh,err = io.open(filepath,'rb') -- use binary in case of UTF ?
 
-if not err then
-	an_data = fh:read("*a")
-	fh:close()
-else
-	an_data = minetest.setting_get("motd") or ""
+	if not err then
+		an_data = fh:read("*a")
+		fh:close()
+	else
+		an_data = minetest.setting_get("motd") or ""
+	end
+	if an_data == "" then an_data = "<no message>" end
+
+	formspeccer:clear(fsn)
+	formspeccer:newform(fsn,"20,10")
+	formspeccer:add_textarea(fsn,{
+		xy="1,1",
+		wh="19,8",
+		name="announce",
+		label="Welcome!",
+		value=an_data,
+	})
+
+	formspeccer:add_button(fsn,{name="submit",label="OK",xy="9,8",wh="2,1"},true)
 end
-if an_data == "" then an_data = "<no message>" end
 
-local fsn = formspeccer:newform("announcement:billboard","20,10")
-formspeccer:add_textarea(fsn,{
-	xy="1,1",
-	wh="19,8",
-	name="announce",
-	label="Welcome!",
-	value=an_data,
+reload() -- call once to initialize
+
+minetest.register_chatcommand("reannounce",{
+	params = "",
+	description = "reload the announcement message",
+	privs = {server=true},
+	func = function(playername,params)
+		reload()
+	end
 })
 
-formspeccer:add_button(fsn,{name="submit",label="OK",xy="9,8",wh="2,1"},true)
+minetest.register_chatcommand("announcement",{
+	params = "",
+	description = "Display the announcement message",
+	func = function(playername,params)
+		formspeccer:show(minetest.get_player_by_name(playername) ,fsn )
+	end
+})
 
 minetest.register_on_joinplayer(function(player)
 	minetest.after(0.5,function(...)
 		formspeccer:show(player,fsn )
-		minetest.debug(formspeccer:to_string(fsn))
 	end)
 end)