Help with action script 3

[themeatsword]

I'm currently making a DDR flash game with action script 3. I can't figure out how to get a detection system to work when the scrolling arrow is in range of the static arrow at the top of the screen for points.

Here's what I have so far. Can anyone give me a hand?

package  
{
    
    import flash.display.MovieClip;
    import flash.events.KeyboardEvent;
    import flash.ui.Keyboard;
    import flash.events.Event;
    import flash.events.MouseEvent;

    
    public class ddrGame extends MovieClip 
    {
        var vy:int;
        
        var score:int;
        
        var titleScreen:Title;
        
        var leftArrow:ArrowLeft;
        var rightArrow:ArrowRight;
        var upArrow:ArrowUp;
        var downArrow:ArrowDown;
        
        var leftHole:ArrowLeftHole;
        var rightHole:ArrowRightHole;
        var upHole:ArrowUpHole;
        var downHole:ArrowDownHole;
        
        public function ddrGame() 
        {
            titleScreen = new Title;
            
            addChild(titleScreen);
            
            //Moving Arrows
            leftArrow = new ArrowLeft;
            leftArrow.x = 55;
            leftArrow.y = 500;
            
            rightArrow = new ArrowRight;
            rightArrow.x = 500;
            rightArrow.y = 500;
            
            upArrow = new ArrowUp;
            upArrow.x = 350;
            upArrow.y = 500;
            
            downArrow = new ArrowDown;
            downArrow.x = 200;
            downArrow.y = 500;
            
            //Stationary Arrow Holes
            leftHole = new ArrowLeftHole;
            addChild(leftHole);
            leftHole.x = 55;
            leftHole.y = 90;
            leftHole.visible = false;
            
            rightHole = new ArrowRightHole;
            addChild(rightHole);
            rightHole.x = 500;
            rightHole.y = 90;
            rightHole.visible = false;
            
            upHole = new ArrowUpHole;
            addChild(upHole);
            upHole.x = 350;
            upHole.y = 90;
            upHole.visible = false;
            
            downHole = new ArrowDownHole;
            addChild(downHole);
            downHole.x = 200;
            downHole.y = 90;
            downHole.visible = false;
            
            vy = 3;
            
            addEventListener(KeyboardEvent.KEY_DOWN, onKeyDown);
            addEventListener(Event.ENTER_FRAME, onEnterFrame);
            titleScreen.startButton.addEventListener(MouseEvent.CLICK, onPlayButtonClick);
        }
        
        function onPlayButtonClick(event:MouseEvent):void
        {
            removeChild(titleScreen);
            leftHole.visible = true;
            rightHole.visible = true;
            upHole.visible = true;
            downHole.visible = true;
            
            addChild(leftArrow);
            //addChild(rightArrow);
            //addChild(upArrow);
            //addChild(downArrow);
        }
        
        private function onEnterFrame(event:Event):void
        {
            leftArrow.y -= vy;
            rightArrow.y -= vy;
            upArrow.y -= vy;
            downArrow.y -= vy;
            
            trace(leftArrow.y);
        }
        function onKeyDown(event:KeyboardEvent):void
        {
            if(leftArrow.y >= leftHole.y + 5 && event.keyCode == Keyboard.LEFT)
            {
                score++;
                trace(score);
                removeChild(leftArrow);
            }
        }

    }
    
}

[themeatsword]

Doesn't anyone out there use Action script? I really can't figure this out.

[naelstrof]

try

if(Math.abs(leftArrow.y-leftHole.y)<5 && event.keyCode == Keyboard.LEFT)
{
    score++;
    trace(score);
    removeChild(leftArrow);
}

This is probably the best way to check if the arrows are within 5 units of the 'holes'. Although you might want to look at a different way to create arrows if you want infinite of them.

Add me on steam if you want a lecture on exactly how to do that.

[themeatsword]

I resolved the problem by fixing the if statement and also making the function not public. And yeah i know it won't work for an infinite amount of arrows. It was just a temporary test to make the detection work.