Using BitmapData to manage a deck of cards – part 2

import flash.display.BitmapData;
import flash.geom.Rectangle;
import flash.geom.Point;
import flash.filters.DropShadowFilter;
import flash.filters.GlowFilter;
var card_shadow:DropShadowFilter = new DropShadowFilter(4, 45, 0x000000, .5, 4, 4, 1, 3, false, false, false);
var text_glow:GlowFilter = new GlowFilter(0x000000, .6, 4, 4, 2, 3, false, false);
big_picture = BitmapData.loadBitmap("cardz");
_root.attachMovie("table", "table", _root.getNextHighestDepth());
_root.createEmptyMovieClip("game", _root.getNextHighestDepth());
game.attachMovie("higher", "higher", game.getNextHighestDepth());
game.attachMovie("lower", "lower", game.getNextHighestDepth());
game.createEmptyMovieClip("big_pic_obj", game.getNextHighestDepth());
big_pic_obj.attachBitmap(big_picture, game.getNextHighestDepth());
big_pic_obj._visible = false;
sequence = new Array();
Array.prototype.shuffle = function() {
	for (x=0; x<52; x++) {
		var from = Math.floor(Math.random()*52);
		var to = this[x];
		this[x] = this[from];
		this[from] = to;
	}
};
for (x=0; x<52; x++) {
	card = game.createEmptyMovieClip("small_pic_obj_"+x, game.getNextHighestDepth());
	sequence[x] = x;
	small_picture = new BitmapData(79, 123);
	card.attachBitmap(small_picture, game.getNextHighestDepth());
	small_picture.copyPixels(big_picture, new Rectangle(0+(x%13)*79, 0+Math.floor(x/13)*123, 79, 123), new Point(0, 0));
	card._visible = false;
	card.filters = new Array(card_shadow);
	card.onEnterFrame = function() {
		switch (this.action) {
		case "come" :
			this._x += 40;
			if (this._x>210) {
				this._x = 210;
				this.action = "stay";
				if (cards_drawn>1) {
					game.ok_ko._visible = true;
				}
			}
			break;
		case "move" :
			this._x += 20;
			if (this._x>310) {
				this._x = 310;
				this.action = "dissolve";
			}
			break;
		case "dissolve" :
			this._alpha -= 4;
			game.lap_score._alpha -= 4;
			if (this._alpha<0) {
				can_draw = true;
				game.ok_ko._visible = false;
				if (cards_drawn == 52) {
					endgame();
				}
				this.removeMovieClip();
			}
			break;
		}
	};
}
game.attachMovie("ok_ko", "ok_ko", game.getNextHighestDepth(), {_x:250, _y:230, _visible:false});
game.attachMovie("score", "score", game.getNextHighestDepth(), {_x:0, _y:140});
game.attachMovie("lap_score", "lap_score", game.getNextHighestDepth(), {_x:-50, _y:0, _alpha:0});
game.score.filters = new Array(text_glow);
game.lap_score.filters = new Array(text_glow);
sequence.shuffle();
cards_drawn = 0;
points = 0;
can_draw = true;
draw_card();
game.higher.onRelease = function() {
	if (can_draw) {
		can_draw = false;
		higher = true;
		draw_card();
	}
};
game.lower.onRelease = function() {
	if (can_draw) {
		can_draw = false;
		higher = false;
		draw_card();
	}
};
function draw_card() {
	game.ok_ko.gotoAndStop(2);
	lap = 0;
	if (((sequence[cards_drawn]%13)<=(sequence[cards_drawn-1]%13) and (!higher)) or ((sequence[cards_drawn]%13)>=(sequence[cards_drawn-1]%13) and (higher))) {
		game.ok_ko.gotoAndStop(1);
		game.lap_score.lap_text.textColor = 0x40ff40;
		if (cards_drawn>0) {
			if (!higher) {
				lap = 13-(sequence[cards_drawn-1]%13);
			} else {
				lap = sequence[cards_drawn-1]%13+1;
			}
		}
	} else {
		lap = -5;
		game.lap_score.lap_text.textColor = 0x900000;
	}
	game.lap_score.lap_text.text = lap;
	if (cards_drawn>0) {
		game.lap_score._alpha = 100;
	}
	points += lap;
	game["small_pic_obj_"+sequence[cards_drawn]]._x = 0;
	game["small_pic_obj_"+sequence[cards_drawn]]._y = 10;
	game["small_pic_obj_"+sequence[cards_drawn]]._visible = true;
	game["small_pic_obj_"+sequence[cards_drawn]].action = "come";
	game["small_pic_obj_"+sequence[cards_drawn-1]].action = "move";
	cards_drawn++;
	game.score.textscore.text = "Cards left: "+(52-cards_drawn)+" - Score: "+points;
}
function endgame() {
	game.removeMovieClip();
	_root.attachMovie("game_over","game_over",_root.getNextHighestDepth());
	game_over.gameovertext.filters = new Array(text_glow);
	_root.game_over.gameovertext.text = "Your score:\n"+points;
}