as3 hitTest & Score

programming
1

This is an AS3 problem:

I am trying to set up a hitTest scoring situation.

if the Bee touches the Maze
then the score goes up +1.

the score code doesn’t work, and it also seems to
stop the KeyBoard input from being “listened” to.

I also get an error message that says this,
"1180: Call to a possibly undefined method showGameScore.

This is the Code:

package {
    import flash.display.*;
    import flash.text.*;
    import flash.events.*;

    public class kbcdScore extends MovieClip {

        private static  const pointsForGoodTouch:int = 25;
        private static  const pointsForBadTouch:int = -15;
        public function kbcdScore() {

            //declaring a new TextField object that will hold the score
             var gameScore:int;
             var gameScoreField:TextField;

            // new TextField to display score
            gameScoreField = new TextField();
            //add it to the stage
            addChild(gameScoreField);
            gameScore = 0;
            showGameScore();

            //this code listens for the collision
            addEventListener(Event.ENTER_FRAME, checkCollision);
            function checkCollision(event:Event) {

                // test playerBee versus maze
                if (playerBee.hitTestObject(maze)) {
                    gameScore += pointsForGoodTouch;
                    showGameScore();
                } else {
                    gameScore += pointsForBadTouch;
                    showGameScore();
                }
            }

            //from keyboard
            // initialize arrow variables
            var leftArrow:Boolean = false;
            var rightArrow:Boolean = false;
            var upArrow:Boolean = false;
            var downArrow:Boolean = false;

            // set event listeners
            stage.addEventListener(KeyboardEvent.KEY_DOWN, keyPressedDown);
            stage.addEventListener(KeyboardEvent.KEY_UP, keyPressedUp);
            stage.addEventListener(Event.ENTER_FRAME, moveBee);

            // set arrow variables to true
            function keyPressedDown(event:KeyboardEvent) {
                if (event.keyCode == 37) {
                    leftArrow = true;
                } else if (event.keyCode == 39) {
                    rightArrow = true;
                } else if (event.keyCode == 38) {
                    upArrow = true;
                } else if (event.keyCode == 40) {
                    downArrow = true;
                }
            }

            // set arrow variables to false
            function keyPressedUp(event:KeyboardEvent) {
                if (event.keyCode == 37) {
                    leftArrow = false;
                } else if (event.keyCode == 39) {
                    rightArrow = false;
                } else if (event.keyCode == 38) {
                    upArrow = false;
                } else if (event.keyCode == 40) {
                    downArrow = false;
                }
            }

            // move every frame
            function moveBee(event:Event) {
                var speed:Number = 5;

                if (leftArrow) {
                    playerBee.x -= speed;
                }
                if (rightArrow) {
                    playerBee.x += speed;
                }
                if (upArrow) {
                    playerBee.y -= speed;
                }
                if (downArrow) {
                    playerBee.y += speed;
                }
            }
        }
    }
}