add luacheck

.luacheckrc

@@ -0,0 +1,16 @@
+allow_defined_top = true
+
+globals = {
+	"controls",
+}
+
+read_globals = {
+	-- Stdlib
+	string = {fields = {"split"}},
+	table = {fields = {"copy", "getn"}},
+
+	-- Minetest
+	"minetest",
+	"vector", "ItemStack",
+	"dump"
+}

init.lua

@@ -36,7 +36,7 @@ minetest.register_on_leaveplayer(function(player)
 	controls.players[name] = nil
 end)
 
-minetest.register_globalstep(function(dtime)
+minetest.register_globalstep(function()
 	for _, player in pairs(minetest.get_connected_players()) do
 		local player_name = player:get_player_name()
 		local player_controls = player:get_player_control()