Step 7. Lag

Adding this many eventListener will eventually cause the game to lag. Fortunately, there is a way to remove them once they are no longer needed.

this.arrowHallway1.removeEventListener(Event.ENTER_FRAME, hoverarrowHallway1);

Yes, it's as simple as that.

You should be removing all the Event listeners when you leave a room; they will be added back once you re-enter the room. Let's go back to the first room’s code.

this.arrowHallway1.addEventListener(MouseEvent.CLICK, enterHallway1);

function enterHallway1(event:MouseEvent):void {
	Object(root).game.gotoAndStop(“hallway1”);
}

this.arrowHallway1.addEventListener(Event.ENTER_FRAME, hoverarrowHallway1);

function hoverarrowHallway1(event:Event):void {
	if (this.arrowHallway1.hitTestPoint(stage.mouseX, stage.mouseY, true) {
		this.arrowHallway1.nextFrame();
	} else {
	this.arrowHallway1.prevFrame();
	}
}

this.cheezmc.addEventListener(MouseEvent.CLICK, cheezget);

function cheezget(event: MouseEvent): void {
	this.cheezmc.visible = false;
	Object(root).Inv.Itembox1.gotoAndStop(“cheez);
	Object(root).Inv.Itembox1.Itemboxflash.gotoAndPlay(1);
}

We need it so that when we leave the room, all the other event listeners are deleted. You could do this:

this.arrowHallway1.addEventListener(MouseEvent.CLICK, enterHallway1);

function enterHallway1(event:MouseEvent):void {
	this.arrowHallway1.removeEventListener(MouseEvent.CLICK, enterHallway1);
	this.arrowHallway1.removeEventListener(Event.ENTER_FRAME, hoverarrowHallway1);
	this.cheezmc.removeEventListener(MouseEvent.CLICK, cheezget);
	Object(root).game.gotoAndStop(“hallway1”);
}

But once you have 20 or so items, that eats up a lot of lines. Instead, try putting them all into a function.

this.arrowHallway1.addEventListener(MouseEvent.CLICK, enterHallway1);

function enterHallway1(event:MouseEvent):void {
	removeAll();
	Object(root).game.gotoAndStop(“hallway1”);
}

function removeAll() { // you can call the function whatever you want
	this.arrowHallway1.removeEventListener(MouseEvent.CLICK, enterHallway1);
	this.arrowHallway1.removeEventListener(Event.ENTER_FRAME, hoverarrowHallway1);
	this.cheezmc.removeEventListener(MouseEvent.CLICK, cheezget);
}

If you are familiar with Scratch, these are like custom blocks. This way, anytime you add a new item that can be interacted with, you can add the code to remove it only once into the function. Make sure to place the removeAll(); BEFORE you move to the next room, or else it won’t work.