Avoid lighting bugs, players messing w/ inventory via CSM.

mods/nc_api/mapgen_shared.lua

@@ -37,7 +37,5 @@ minetest.register_on_generated(function(minp, maxp)
 		end
 
 		vm:set_data(data)
-		vm:set_lighting({day = 0, night = 0})
-		vm:calc_lighting()
 		vm:write_to_map()
 	end)

mods/nc_player_setup/setup.lua

@@ -18,3 +18,7 @@ minetest.register_on_joinplayer(function(player)
 				zoom_fov = 60
 			})
 	end)
+
+minetest.register_allow_player_inventory_action(function(_, action)
+		return action == "move" and 0 or 1000000
+	end)