Add diggable controller in MineClone2-derived games

init.lua

@@ -37,6 +37,9 @@ end
 dofile(minetest.get_modpath(minetest.get_current_modname()).."/api.lua")
 
 local ctrl_groups = {choppy=2, oddly_breakable_by_hand=2}
+if has_mcl then
+   ctrl_groups = {axey=2, handy=1}
+end
 local has_worldedit = minetest.global_exists("worldedit")
 local is_singleplayer = minetest.is_singleplayer()
 local control_textures = {
@@ -381,6 +384,9 @@ minetest.register_node("meshnode:controller", {
 	paramtype2 = "facedir",
 	tiles = control_textures,
 	groups = ctrl_groups,
+	-- _mcl_hardness is needed so that the controller is not
+	-- diggable without a delay in MineClone2-derived games.
+	_mcl_hardness = 1,
 	on_construct = function(pos)
 		local meta = minetest.get_meta(pos)
 		local inv = meta:get_inventory()