package icarus.util
{
    import flash.geom.Rectangle;
    import org.flixel.*;

    /**
     * This allows you to define per-tile animations for a tilemap.
     * These are done via a FlxSprite instance so that you can manipulate
     * it as much as you like.
     */

    public class AnimatedTilemap extends FlxTilemap
    {
        public var sprites:Array;
        protected var lastFrames:Array;
        protected var tileRect:Rectangle;

        public function AnimatedTilemap()
        {
            super();
            this.tileRect = new Rectangle();
            this.tileRect.x = 0;
            this.tileRect.y = 0;
        }

        override public function loadMap(MapData:String, TileGraphic:Class, TileWidth:uint = 0, TileHeight:uint = 0):FlxTilemap
        {
            super.loadMap(MapData, TileGraphic, TileWidth, TileHeight);
            this.sprites = [];
            this.lastFrames = [];
            this.tileRect.width = this._tileWidth;
            this.tileRect.height = this._tileHeight;
            return this;
        }

        override public function update():void
        {
            for (var i:int = 0; i < this.sprites.length; i++)
                if (this.sprites[i] is FlxSprite)
                    (this.sprites[i] as FlxSprite).update();

            super.update();
        }

        override public function render():void
        {
            this._flashPoint.y = 0;

            for (var i:int = 0; i < this.sprites.length; i++)
                if (this.sprites[i] is FlxSprite)
                {
                    var sprite:FlxSprite = this.sprites[i] as FlxSprite;

                    // if the sprite's frame changed, paint it onto our pixels

                    if (sprite.frame != this.lastFrames[i] || true)
                    {
                        this._flashPoint.x = i * this._tileWidth;
                        this._pixels.copyPixels(sprite._framePixels, this.tileRect, this._flashPoint);
                        this.lastFrames[i] = sprite.frame;
                    }
                }

            super.render();
        }
    }
}