[AS3] Call public function from different actionscript file?

programming
1

Game is pretty much complete, but I am having a problem that is driving me nuts. At the end of a game, I am trying to give an option to start the game over again. The problem is I am having to try to do this from a different object than the start of the game is located.

Here is the code for my two classes, I’ve added a comment on the part that is giving me the problems.

Main.as:

package
{
	//     Imports     \\
	import fl.transitions.Tween;
	import flash.display.MovieClip;
	import flash.events.Event;
	import com.greensock.TweenLite;
	import fl.motion.easing.Bounce;
	import flash.events.MouseEvent;
	import flash.ui.Mouse;
	
	public class Main extends MovieClip {
		
		public function begin() : void {
			//  rotates stage 30º
			bg.rotationX = -30;
			//  listens for mouse to press "Click here to start"
			Mouse.show ();
			startText.addEventListener  (MouseEvent.MOUSE_UP, gameStart );
			startText.visible = true;
			startText.buttonMode = true;
		}//  end function
		public function gameStart ( _e : Event ) : void {
			//  turns button off and hides the mouse
			startText.buttonMode = false;
			startText.visible = false;
			Mouse.hide ();
			
			//  rotates the walls onto stage 90º
			new TweenLite( bg.wallRight, 2, { rotationY: 90, alpha: 1, ease: Bounce.easeOut } );
			new TweenLite( bg.wallLeft, 2, { rotationY: -90, alpha: 1, ease: Bounce.easeOut } );
			new TweenLite( bg.wallTop, 2, { rotationX: 90, alpha: 1, ease: Bounce.easeOut } );
			new TweenLite( bg.wallBottom, 2, { rotationX: -90, alpha: 1, ease: Bounce.easeOut, onComplete: ball.drop } );	
		}//  end function
	}//  end class
}//  end package

Ball.as:

package {
	//     Imports     \\
	import flash.display.MovieClip;
	import flash.events.Event;
	import com.greensock.TweenLite;
	import fl.motion.easing.Bounce;
	import flash.events.MouseEvent;
	import flash.ui.Mouse;

	public class Ball extends MovieClip {
		//  declares ball variables
		public var xspeed:Number=0;
		public var yspeed:Number=0;
		//  declares fScore score variable
		public var fscore:Number=0;
		public var scoreRight:Number = 0;
		public var scoreLeft:Number = 0;
		public var maxScore:Number = 2;
		
		public function Ball():void {
		}

		public function drop():void {
			//  stops ball's movement and removes the moveBall listener
			this.visible = true;
			xspeed=yspeed=0;
			removeEventListener(Event.ENTER_FRAME, moveBall);
			//  sets balls height to above the center of the stage
			y=- height;
			x=stage.stageWidth/2;
			//resets ball's depth perception
			var scale : Number = (0.5 * 0.6) + 0.6;
			//  drops ball back onto the stage to start new round
			new TweenLite(this,1.5,{y:stage.stageHeight/2,scaleX:scale,scaleY:scale,ease:Bounce.easeOut,onComplete:start});
		}

		public function start():void {
			//  starts ball movement
			xspeed=-15;
			yspeed=12;
			addEventListener(Event.ENTER_FRAME, moveBall);
		}

		private function moveBall(_e:Event):void {
			//  call to depth and collision functions
			depth();
			collision();
			//  makes ball move
			x+=xspeed;
			y+=yspeed;
		}

		private function depth():void {
			//  allows ball to change size to give depth perseption to tha ball
			var smaller : Number = ((y/stage.stageHeight) * 0.6) + 0.6;
			scaleX=scaleY=smaller;
		}

		private function collision():void {
			//  sets maximum wall values
			if (y>=380||y<=155) {
				//  reverses ball's direction if collision detected
				yspeed*=-1;
			}//  end if
			//  sets hit test to detect if ball hits player or AI paddles
			if (x > (stage.stageWidth / 2) && hitTestObject(MovieClip(parent).bg.wallRight)) {
				//  changes direction of ball if collision detected
				xspeed*=-1;
				if (xspeed>0) {
					xspeed=- xspeed;
				}
			}
			if (x < (stage.stageWidth / 2) && hitTestObject( MovieClip(parent).bg.wallLeft) ) {
				xspeed*=-1;
				if (xspeed<0) {
					xspeed=- xspeed;
				}
			}

			// checks to see if ball is still located on floor
			if (!MovieClip(parent).bg.floor.hitTestPoint(x, y + (height / 2 * scaleY), true)) {
				//  if not on stage detect which side ball exits on and add score to appropriate side
				if (x<stage.stageWidth/2) {
					scoreRight++;
					MovieClip(parent).bg.wallTop.scoreRight.text = scoreRight;
				} else {
					scoreLeft++;
					MovieClip(parent).bg.wallTop.scoreLeft.text = scoreLeft;
				}
				
				if ((scoreLeft >= maxScore) || (scoreRight >= maxScore)) {
					fScore();
				} else {
					drop();
				}
			}
		}
		
		public function fScore():void {
			//trace(MovieClip(parent).fScore.winOrLose);
			//trace(MovieClip(parent).fScore.winOrLose.textField)
			
			MovieClip(parent).bg.wallRight.alpha=0;
			MovieClip(parent).bg.wallLeft.alpha=0;
			MovieClip(parent).bg.wallTop.alpha=0;
			MovieClip(parent).bg.wallBottom.alpha=0;
			MovieClip(parent).bg.floor.lines.alpha=0;
			MovieClip(parent).bg.rotationX=0;
			this.visible = false;
Line 110    MovieClip(parent).startText.addEventListener  (MouseEvent.MOUSE_UP, gameStart );//  THIS IS THE LINE OF CODE THAT IS GIVING ME THE ERROR
            MovieClip(parent).startText.visible = true;
            MovieClip(parent).startText.buttonMode = true;


			if (scoreRight >= maxScore) {
				MovieClip(parent).fScore.visible = true;
				MovieClip(parent).fScore.winOrLose.text = "You Win! ";
				//trace ("you win");
			}
			
			if (scoreLeft >= maxScore) {
				MovieClip(parent).fScore.visible = true;
				MovieClip(parent).fScore.winOrLose.text = "You Lose! ";
				//trace ("you lose");
			}
		}
	}//  end class
}//  end package

Here is the error I am getting in the Compiler:

Location: Ball.as, Line 110

Description: 1120: Access of undefined property gameStart.

Source: MovieClip(parent).startText.addEventListener (MouseEvent.MOUSE_UP, gameStart );

Can someone please point me in the right direction?