package
{
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.Sprite;
import flash.events.Event;
import flash.geom.Point;
import flash.geom.Rectangle;
// Here we declare the properties of our SWF.
[SWF(width="100", height="100", frameRate="20", backgroundColor="0x330066", quality="high", scale="noscale")]
public class Main extends Sprite
{
[Embed(source = "../img/plane.png")] public var Plane:Class; //Take the image plane.png (it contains 3 frames at 32x32) and put it in the Class "Plane".
private var PlaneBmp:Bitmap = new Plane(); //Crate a new Bitmap from it.
private var FinalPlaneBmp:Bitmap = new Bitmap(); //Create an empty Bitmap.
private var PlaneAnimationArr:Array = new Array();
private var frameNumber:int; //Here we store the current frame number for blitting.
private var point: Point = new Point(0, 0); //Anchor point, is usually 0,0.
private var rect:Rectangle = new Rectangle(0, 0, 32, 32); //The rectangle that cut the section of the image that we need.
public function Main():void {
if (stage) init();
else addEventListener(Event.ADDED_TO_STAGE, init);
}
private function init(e:Event = null):void {
removeEventListener(Event.ADDED_TO_STAGE, init);
addEventListener(Event.ENTER_FRAME, update);
addChild(FinalPlaneBmp); //Let's add the empty Bitmap on the stage.
FinalPlaneBmp.smoothing = true;
FinalPlaneBmp.bitmapData = new BitmapData(32, 32); //Fill it's bitmapData with an image 32x32.
for (var i:int = 0; i < 3; i++) {
rect.x = 32 * i; //Shift the rectangle position of 32 every frame, for 3 frames in loop.
PlaneAnimationArr.push(new BitmapData(32, 32)); // Create a new BitmapData in the Array.
PlaneAnimationArr[i].copyPixels(PlaneBmp.bitmapData, rect, point); //Copy the images that is under the rectangle at that position of the PlaneBmp and copy it in the Array.
}
FinalPlaneBmp.x = 50;
FinalPlaneBmp.y = 50;
}
private function update(e:Event):void {
frameNumber++;
if (frameNumber >= 3) frameNumber = 0;
FinalPlaneBmp.bitmapData = PlaneAnimationArr[frameNumber];
FinalPlaneBmp.rotation++;
}
}
}