as3 movieClip/keyboard control - im an as3 noob btw

[frshhh]

OK, so im trying to make a seemingly simple as3 project where I instantiate a movieclip from the library, and then move it using keyboard controls. I got it working fine using ye olde as2 method (all the code on the timeline of the .fla), but i cant get it to work using the as3 .as file method (if that’s the right description).

Here’s what i have so far:

man.fla

import Hero;
var hero_mc:MovieClip = new Hero();
addChild (hero_mc);
hero_mc.Heromanctrl();
//hero_mc.checkKeys();
//hero_mc.keyUps();
hero_mc.x= 100;
hero_mc.y= 100;

Hero.as

package {

    import flash.display.*
    import flash.events.*
    
    public class Hero extends MovieClip  {
        var varRight:Number = 0;
        var varLeft:Number = 0;
        var varUp:Number = 0;
        var varDown:Number = 0;
        var xspeed:Number = 10;
        var yspeed:Number = 7;
        var animFrame:Number = 1;
        var moveDir:Number = 0;
    
        public function Heromanctrl() {
            stage.addEventListener(KeyboardEvent.KEY_DOWN , checkKeys);
            stage.addEventListener(KeyboardEvent.KEY_UP, keyUps);
            stage.addEventListener(Event.ENTER_FRAME, movement);
        }

        public function checkKeys(event:KeyboardEvent){
            if (event.keyCode == 39) {
                varRight = 1;
            }
            if (event.keyCode == 37) {
                varLeft = 1;
            }
            if (event.keyCode == 40) {
                varDown = 1;
            }
            if (event.keyCode == 38) {
                varUp = 1;
            }
        }
        
        public function keyUps(event:KeyboardEvent) {
            if (event.keyCode == 39) {
                event.keyCode = 0;
                varRight=0;
            }
            if (event.keyCode == 38) {
                event.keyCode = 0;
                varUp=0;
            }
            if (event.keyCode == 37) {
                event.keyCode = 0;
                varLeft=0;
            }
            if (event.keyCode == 40) {
                event.keyCode = 0;
                varDown=0;
            }
        }
        
        public function movement(Event){
            moveDir = varUp + varDown + varLeft + varRight;
            //--------------------------------------- RIGHT ----
            if (varRight == 1) {
                Hero.x += xspeed;
                if (moveDir == 1){
                    parent.gotoAndStop(3);
                    animFrame = 3;
                }
            }
            //--------------------------------------- UP ----
            if (varUp == 1) {
                Hero.y -= yspeed;
                if (moveDir == 1){
                    parent.gotoAndStop(2);
                    animFrame = 2;
                }
            }
            //--------------------------------------- LEFT ----
            if (varLeft == 1) {
                Hero.x -= xspeed;
                if (moveDir == 1){
                    parent.gotoAndStop(4);
                    animFrame = 4;
                }
            }
            //--------------------------------------- DOWN ----
            if (varDown == 1) {
                Hero.y += yspeed;
                if (moveDir == 1){
                    parent.gotoAndStop(1);
                    animFrame = 1;
                }
            }
            //--------------------------------------- STILL ----
            if (varUp == 0){
                if (varDown == 0){
                    if (varRight == 0){
                        if (varLeft == 0){
                            parent.gotoAndStop(animFrame + 4);
                        }
                    }
                }
            }
        }
    }


}

As it is at the moment the mc loads on the stage, but is uncontrolable… if i uncomment the 2 other function calls in the .fla (//hero_mc.checkKeys();… etc) i just get an error:

ArgumentError: Error #1063: Argument count mismatch on Hero/checkKeys(). Expected 1, got 0.
    at rpgman_fla::MainTimeline/frame1()

I accept to some of you as3 masters, there could quite possibly be something really simple and totally nooby about my code, but like i say… i AM a total as3 noob. I have tried reading through tutorials and examples (such as the ones here on kirupa), but i can’t get my head around it…

So please, get out your coding paddles, pull down my coding pants… and code-spank me silly… ahem.