//  PACMAN "game" EXAMPLE
package
{
	import flash.display.*;  // includes MovieClip class
	import flash.events.*;   // includes KeyboardEvent class
	import flash.ui.*;       // includes Keyboard class
		
	public class Wk5EnhancedPacman extends MovieClip 
	{
		var leftArrow = false;
		var rightArrow = false;
		var upArrow = false;
		var downArrow = false;
		
		public function Wk5EnhancedPacman( )
		{
			// Set the speed of Pacman
			pacman.speed = 30;
			
			// Event listener to check which key has been pressed
			stage.addEventListener( KeyboardEvent.KEY_DOWN, keyPressedDown );
			// Event listener to check which key has been released
			stage.addEventListener( KeyboardEvent.KEY_UP, keyPressedUp );
			// Frame Loop Event listener to move pacman
			stage.addEventListener( Event.ENTER_FRAME, movePacman );
			
			
		}  // end constructor function
	
		function keyPressedDown( evt: KeyboardEvent )
		{
			if( evt.keyCode == Keyboard.RIGHT )
			{	rightArrow = true;
			}
			else if ( evt.keyCode == Keyboard.LEFT )
			{	leftArrow = true;
			}
			else if ( evt.keyCode == Keyboard.UP )
			{	upArrow = true;
			}
			else if ( evt.keyCode == Keyboard.DOWN )
			{	downArrow = true;
			}
		} // end keyPressedDown function
		
		function keyPressedUp( evt: KeyboardEvent )
		{
			if( evt.keyCode == Keyboard.RIGHT )
			{	rightArrow = false;
			}
			else if ( evt.keyCode == Keyboard.LEFT )
			{	leftArrow = false;
			}
			else if ( evt.keyCode == Keyboard.UP )
			{	upArrow = false;
			}
			else if ( evt.keyCode == Keyboard.DOWN )
			{	downArrow = false;
			}
		} // end keyPressedUp function
	
		// Frame Event Handler function to move pacman around the stage
		function movePacman( evt: Event )
		{   if( leftArrow == true )  
			{	pacman.x = pacman.x - pacman.speed;    	//      move pacman to the left by the value of speed
				pacman.rotation = -180; 				//		and rotate pacman to face left
			}
			
			if( upArrow == true )  
			{	pacman.y = pacman.y - pacman.speed;
				pacman.rotation = -90; 
			}
			
			if( rightArrow == true )  
			{	pacman.x = pacman.x + pacman.speed;
				pacman.rotation = 0; 
			}
			
			if( downArrow == true )  
			{	pacman.y = pacman.y + pacman.speed;
				pacman.rotation = 90; 
			}
		}  // end movePacman function
	} // end class
} // end package