option to disable spawn

api.lua

@@ -809,8 +809,13 @@ local find_node_height = 32
 local block_protected_spawn = minetest.settings:get_bool("block_protected_spawn") or true
 local mob_limit = tonumber(minetest.settings:get("mob_limit") or 6)
 
+mob_core.spawn_enabled = true
+
 function mob_core.spawn(name, nodes, min_light, max_light, min_height,
                         max_height, min_rad, max_rad, group, optional)
+						
+	if not mob_core.spawn_enabled then return end
+
     group = group or 1
 
 	--are we in the nether??