package ;
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.Sprite;
import flash.geom.Point;
import flash.utils.Timer;
import openfl.Assets;
import flash.geom.Rectangle;
import flash.events.TimerEvent;

/**
 * ...
 * @author Robin van Ee
 */
class AnimSprite extends Sprite
{
	var clip : Array<BitmapData>;
	var frame : Int = 0;
	var numFrames : Int;
	var timer : Timer;

	public var origWidth : Float;
	public var origHeight : Float;

	public function new(filename : String, frameWidth : Int, frameHeight : Int, nFrames : Int, ?fps : Int = 60)
	{
		super();
		var tileSheet = Assets.getBitmapData(filename);

		numFrames = nFrames;

		clip = new Array<BitmapData>();

		var sheetWidth : Int = cast(tileSheet.width / frameWidth);
		var sheetHeight : Int = cast(tileSheet.height / frameHeight);

		for (x in 0...sheetWidth)
		{
			for (y in 0...sheetHeight)
			{
				var tempRect : Rectangle = new Rectangle(x * frameWidth , y * frameHeight, frameWidth, frameHeight);
				var tempImage : BitmapData = new BitmapData(frameWidth, frameHeight, true, 0x00000000);
				tempImage.copyPixels(tileSheet, tempRect, new Point(0, 0));
				clip.push(tempImage);
			}
		}

		graphics.beginBitmapFill(clip[frame]);
		graphics.drawRect(0, 0, clip[frame].width, clip[frame].height);

		origWidth = width;
		origHeight = height;

		timer = new Timer(1000 / fps, 0);
		timer.addEventListener (TimerEvent.TIMER, Render);
	}

	private function Render(e:TimerEvent)
	{
		frame++;
		if (frame >= numFrames-1) frame = 0;
		graphics.clear();
		graphics.beginBitmapFill(clip[frame]);
		graphics.drawRect(0, 0, clip[frame].width, clip[frame].height);
	}

	public function Play()
	{
		timer.start();
	}

	public function Stop()
	{
		timer.stop();
	}

}