// DYNAMIC OBJECTS with Mouse Click controlling adding and removing new objects
package
{
	import flash.display.*;
	import flash.events.*;
	
	public class Wk9DynamicObjects extends MovieClip
	{
		// Create two new dynamic objects, a Butterfly and a Hummingbird
		var fly: Butterfly = new Butterfly( );
		var bird: Hummingbird = new Hummingbird( );
		
		var counter = 0;  // A counter variable keeping track of mouse clicks

		function Wk9DynamicObjects( ) 
		{
			fly.x = 100;
			fly.y = 100;
			bird.x = 200;
			bird.y = 100;
			// Add mouse event listener to the stage.
			stage.addEventListener(MouseEvent.MOUSE_DOWN, AddToCounter)
		} // end constructor
		
		// When the user clicks anywhere on the stage, increment the counter 
		// and decide which object to display depending on the count
		function AddToCounter(evt:MouseEvent)
		{
			// Increase the counter each time the stage is clicked
			counter++;
			trace("stage clicked. Counter = " + counter);
			
			// When the counter reaches 1, add the butterfly, but stop its nested timelines, 
			// so wings don't flap and it's stationary
			if (counter == 1)
			{
				addChild(fly);
				fly.stop( );
				fly.leftWing.stop( );
				fly.rightWing.stop( );
				trace("butterfly added");
			}
			// When the counter reaches 2, start the wings flapping
			else if (counter == 2)
			{	fly.leftWing.play( );
				fly.rightWing.play( );
			}
			// When the counter reaches 3, move the butterfly on a motion path
			else if (counter == 3)
				fly.play( );
			// When the counter reaches 4, remove the butterfuly, and add the hummingbird
			// but stop the bird's timeline, so it's hovering in one spot
			else if (counter == 4)
			{
				removeChild(fly); 
				trace("butterfly removed");
				addChild(bird);
				bird.stop( );
				trace("hummingbird added");
			}
			// When the counter reaches 5, play the bird's timeline, so it moves in a motion path
			else if (counter == 5)
				bird.play( );
			// When the counter reaches 6, remove the hummingbird and set counter back to 0
			// Now nothing is on the stage)
			else if (counter == 6)
			{
				counter = 0;
				removeChild(bird);
			}
		} // end addToCounter
	}
}