Limit # of messages shown at once (default 7)

README.md

@@ -21,6 +21,13 @@ Some usage examples:
 * Informational messages
 * Administational messages to warn players about a coming server shutdown
 
+## Settings
+This mod can be configured via `minetest.conf`.
+
+Currently, one setting is recognized:
+
+* `central_message_max`: Limit the number of messages displayed at once, by providing a number. Use `inf` here for no limit. Default: 7
+
 
 ## API
 ### `cmsg.push_message_player(player, message, color)`

init.lua

@@ -1,6 +1,15 @@
 cmsg = {}
 cmsg.hudids = {}
 cmsg.active_messages = {}
+cmsg.settings = {}
+
+cmsg.settings.max_messages = 7
+local setting = minetest.setting_get("central_message_max")
+if type(tonumber(setting)) == "number" then
+	cmsg.settings.max_messages = tonumber(setting)
+elseif setting == "inf" then
+	cmsg.settings.max_messages = nil
+end
 
 cmsg.default_color = 0xFFFFFF
 
@@ -26,9 +35,15 @@ cmsg.push_message_player = function(player, text, color)
 			-- move older HUD IDs up
 			for hudid,tbl in pairs(cmsg.hudids[pname]) do
 				tbl.stackpos = tbl.stackpos + 1
+				if cmsg.settings.max_messages and tbl.stackpos >= cmsg.settings.max_messages then
+					player:hud_remove(hudid)
+					cmsg.hudids[pname][hudid] = nil
+					cmsg.active_messages[pname] = cmsg.active_messages[pname] - 1
+				else
 					player:hud_change(hudid, "offset", {x=0,y=-128-(18*tbl.stackpos)})
 				end
 			end
+		end
 		local hudid = player:hud_add({
 			hud_elem_type = "text",
 			text = text,