limit the amount of monkeys spawned from monkey cubes

code/controllers/configuration.dm

@@ -242,6 +242,9 @@
 	// Lavaland
 	var/lavaland_budget = 60
 
+	//cube monkey limit
+	var/cubemonkeycap = 20
+
 /datum/configuration/New()
 	for(var/T in subtypesof(/datum/game_mode))
 		var/datum/game_mode/M = T
@@ -782,6 +785,8 @@
 					config.enable_night_shifts = TRUE
 				if("lavaland_budget")
 					config.lavaland_budget = text2num(value)
+				if("cubemonkey_cap")
+					config.cubemonkeycap = text2num(value)
 				else
 					log_config("Unknown setting in configuration: '[name]'")
 

code/controllers/subsystem/mobs.dm

@@ -7,6 +7,7 @@ SUBSYSTEM_DEF(mobs)
 	var/list/currentrun = list()
 	var/static/list/clients_by_zlevel[][]
 	var/static/list/dead_players_by_zlevel[][] = list(list()) // Needs to support zlevel 1 here, MaxZChanged only happens when z2 is created and new_players can login before that.
+	var/static/list/cubemonkeys = list()
 
 /datum/controller/subsystem/mobs/stat_entry()
 	..("P:[GLOB.mob_list.len]")