Improved performance of walking.

Switches to manual walking when close to target.

_rooms.js

@@ -9,9 +9,9 @@ module.exports = {
 	update: function () {
 		for (const room_name in Game.rooms) {
 			const room = Game.rooms[room_name];
-			if (room.isNewLevel()) {
+			if (Game.time % 1000 == 0) {
 				// Place new building types if the max construcion sites isn't achieved yet.
-				if (!room.isConstructionQueueFull()) {
+				if (room.canConstruct()) {
 					room.planRoads();
 					room.planStructures();
 				}