ok so i’m creating a game using flash and actionscript 3.0. I’ve just fixed one problem but now i have another, when i run my game it comes up with a warning:
Warning: 1090: Migration issue: The onKeyDown event handler is not triggered automatically by Flash Player at run time in ActionScript 3.0. You must first register this handler for the event using addEventListener (‘KeyDown’, callback_handler)

I’ve tried googling the problem but i don’t understand what it means, i’ve never used action script before in my life and i’m completely new to it, but we have to use it to complete a module on my course. So can anyone explain what’s going on?

I’m trying to control a character using the keyboard but i’m not having much luck. I’ll paste the code i have so far below:

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

public class Main1 extends MovieClip
{

var screen1:StartScreen;
var screen2:InstructionScreen1;
var screen3:InstructionScreen2;
var screen4:GameScreen;

public function Main1()
{

screen1 = new StartScreen();
screen2 = new InstructionScreen1();
screen3 = new InstructionScreen2();
screen4 = new GameScreen();

screen1.playBtn.addEventListener(MouseEvent.CLICK,gotoGameScreen);
screen1.howtoplayBtn.addEventListener(MouseEvent.CLICK,gotoInstructionScreen1);
screen2.arrowBtn.addEventListener(MouseEvent.CLICK,gotoInstructionScreen2);
screen3.playBtn.addEventListener(MouseEvent.CLICK,gotoGameScreen2);
addChild(screen1);
}

private function gotoGameScreen(evt:MouseEvent):void
{
removeChild(screen1);

addChild(screen4);

screen4.toothy.x = -210;
screen4.toothy.y = 150;
}

private function gotoGameScreen2(evt:MouseEvent):void{
removeChild(screen3);

addChild(screen4);
screen4.toothy.x = -210;
screen4.toothy.y = 150;
}

private function gotoInstructionScreen1(evt:MouseEvent):void
{
removeChild(screen1);
addChild(screen2);
}
private function gotoInstructionScreen2(evt:MouseEvent):void
{
removeChild(screen2);
addChild(screen3);
}

public function fairy()
{
init();
}
function init():void
{
stage.addEventListener(KeyboardEvent.KEY_DOWN, onKeyDown);
}

function onKeyDown(event:KeyboardEvent):void
{
if (event.keyCode == Keyboard.LEFT)
{
toothy.x -= 10;
}
else if (event.keyCode == Keyboard.RIGHT)
{
toothy.x += 10;
}
else if (event.keyCode == Keyboard.DOWN)
{
toothy.y += 10;
}
else if (event.keyCode == Keyboard.UP)
{
toothy.y -= 10;
}
}
}
}