package  {
	import flash.display.*;
	import flash.events.*;
	import flash.text.*;
	import flash.utils.Timer;

	public class Blackjack extends MovieClip {
		// game objects
		private var cash:int; // keep track of money
		private var bet:int; // this bet
		private var deck:Array; // starts with all card values
		private var playerHand:Array; // player’s card values
		private var dealerHand:Array; // dealer’s card values
		private var dealerCard:Cards; // reference to face-down card
		private var cards:Array; // all cards, for clean-up

		// timer for future events
		private var timedEvents:Timer;
		private var timedEventsList:Array;
		public function startBlackjack() {

		// initial cash
		cash = 100;
		showCash();
		cards = new Array();

		// start game
		createDeck();

		// set up timed events list
		timedEventsList = new Array();

		// remove all buttons
		removeChild(hitButton);
		removeChild(stayButton);
		removeChild(continueButton);
		removeChild(dealButton);
		removeChild(addBetButton);

		// start first hand
		startHand();
		}
		private function createDeck() {
			// create six ordered decks in an array
			// using strings to represent card values
			var suits:Array = ["c","d","h","s"];
			var temp = new Array();
				for (var i:int=0;i<5;i++) {
					for(var suit:int=0;suit<4;suit++) {
						for(var num:int=1;num<14;num++) {
							temp.push(suits[suit]+num);
						}
					}

				}
			// pick random cards until deck has been shuffled
			deck = new Array();
			while (temp.length > 0) {
				var r:int = Math.floor(Math.random()*temp.length);
				deck.push(temp[r]);
				temp.splice(r,1);
			}
		}
		// start checking every .25 seconds for an event to play out
		private function startTimedEvents() {
			timedEvents = new Timer(1000);
			timedEvents.addEventListener(TimerEvent.TIMER, playTimedEvents);
			timedEvents.start();
		}
		// done with events for now
		private function stopTimedEvents() {
			timedEvents.stop();
			timedEvents.removeEventListener(TimerEvent.TIMER, playTimedEvents);
			timedEvents = null;
		}
		// add an event to the list to be played out soon
		private function addTimedEvent(eventString) {
			timedEventsList.push(eventString);
		}
		// init hand arrays and bet
		private function startHand() {
			// empty player and dealer hands
			playerHand = new Array();
			dealerHand = new Array();
			playerValueDisplay.text = "";
			dealerValueDisplay.text = "";
			// start off each hand with smallest bet and deal card hidden
			bet = 5;
			showBet();
			// show buttons
			addChild(addBetButton);
			addChild(dealButton);
			resultDisplay.text = "Add to your bet if you wish then press Deal Cards.";
		}
		// allow the player to increase her bet up to $25
		private function addToBet(e:MouseEvent) {
			bet += 5;
			if (bet > 25) bet = 25; // limit bet
				showBet();
		}
		// see if there is a new event in the list and do it
		private function playTimedEvents(e:TimerEvent) {
			var thisEvent = timedEventsList.shift();
			if (thisEvent == "deal card to dealer") {
				dealCard("dealer");
			} else if (thisEvent == "deal card to player") {
				dealCard("player");
				showPlayerHandValue();
			} else if (thisEvent == "end deal") {
				if (!checkForBlackjack()) {
					waitForHitOrStay();
				}
			} else if (thisEvent == "show dealer card") {
				showDealerCard();
			} else if (thisEvent == "dealer move") {
				dealerMove();
			}
		}
		private function dealCards(e:MouseEvent) {
			// take bet away from player
			cash -= bet;
			showCash();
			// add events to deal first cards
			addTimedEvent("deal card to dealer");
			addTimedEvent("deal card to player");
			addTimedEvent("deal card to dealer");
			addTimedEvent("deal card to player");
			addTimedEvent("end deal");
			startTimedEvents();
			// switch buttons
			removeChild(addBetButton);
			removeChild(dealButton);
		}
		private function dealCard(toWho) {
			// get the next card from the deck
			var newCardVal:String = deck.pop();
			if (toWho == "player") {
				// if it goes to the player, then show it and update hand value
				playerHand.push(newCardVal);
				showCard(newCardVal, "player");
			} else {
				// if it goes to the dealer, then show it, but only update hand value later
				dealerHand.push(newCardVal);
				showCard(newCardVal, "dealer");
			}
		}
		// add a card object to the display
		private function showCard(cardVal, whichHand) {
			// get a new card
			var newCard:Cards = new Cards();
			newCard.gotoAndStop(cardVal);
			// set the position of the new card
			if (whichHand == "dealer"){
				newCard.y = 100;
				if (dealerHand.length == 1) {
					// show back for first dealer card
					newCard.gotoAndStop("back");
					dealerCard = newCard;
				}
				var whichCard:int = dealerHand.length;
			} else if (whichHand == "player") {
				newCard.y = 200;
				whichCard = playerHand.length;
			}
			newCard.x = 70*whichCard;
			// add the card
			addChild(newCard);
			cards.push(newCard);
		}
		// time for player to make a decision
		private function waitForHitOrStay() {
			addChild(hitButton);
			addChild(stayButton);
			timedEvents.stop();
		}
		// player draws another card
		private function hit(e:MouseEvent=null) {
			dealCard("player");
			showPlayerHandValue();
			// if player gets 21 or more, go to dealer
			if (handValue(playerHand) >= 21) stay();
		}
		// player done, so show dealer's first card and continue
		private function stay(e:MouseEvent=null) {
			removeChild(hitButton);
			removeChild(stayButton);
			addTimedEvent("show dealer card");
			addTimedEvent("dealer move");
			startTimedEvents();
		}
		// player stays, so time to show dealer card and hand value so far
		private function showDealerCard() {
			dealerCard.gotoAndStop(dealerHand[0]);
			showDealerHandValue();
		}
		// dealer gets a card
		private function dealerMove() {
			if (handValue(dealerHand) < 17) {
				// dealer still doesn’t have 17, so must continue to draw
				dealCard("dealer");
				showDealerHandValue();
				addTimedEvent("dealer move");
				} else {
				// dealer is done
				decideWinner();
				stopTimedEvents();
				showCash();
				addChild(continueButton);
			}
		}
		// calculate hand value
		private function handValue(hand) {
			var total:int = 0;
			var ace:Boolean = false;
			for(var i:int=0;i<hand.length;i++) {
				// add value of card
				var val:int = parseInt(hand[i].substr(1,2));
				// jack, queen, and king = 10
				if (val > 10) val = 10;
					total += val;
				// remember if an ace is found
				if (val == 1) ace = true;
			}
			// ace can = 11 if it doesn't bust player
			if ((ace) && (total <= 11)) total += 10;
				return total;
		}
		// check to see whether either has blackjack
		private function checkForBlackjack():Boolean {
			// if player has blackjack
			if ((playerHand.length == 2) && (handValue(playerHand) == 21)) {
				// award 150 percent winnings
				cash += bet*2.5;
				resultDisplay.text = "Blackjack!";
				stopTimedEvents();
				showCash();
				addChild(continueButton);
				return true;
			} else {
				return false;
			}
		}
		// see who won, or if there is a tie
		private function decideWinner() {
			var playerValue:int = handValue(playerHand);
			var dealerValue:int = handValue(dealerHand)
			if (playerValue > 21) {
				resultDisplay.text = "You Busted!";
			} else if (dealerValue > 21) {
				cash += bet*2;
				resultDisplay.text = "Dealer Busts. You Win!";
			} else if (dealerValue > playerValue) {
				resultDisplay.text = "You Lose!";
			} else if (dealerValue == playerValue) {
				cash += bet;
				resultDisplay.text = "Tie!";
			} else if (dealerValue < playerValue) {
				cash += bet*2;
				resultDisplay.text = "You Win!";
			}
		}
		// start next hand
		function newDeal(e:MouseEvent) {
			removeChild(continueButton);
			resetCards();
			// if deck has less than 26 cards, reshuffle
			if (deck.length < 26) {
				createDeck();
			} else {
				startHand();
			}
		}
		private function showPlayerHandValue() {
			playerValueDisplay.text = handValue(playerHand);
		}
		private function showDealerHandValue() {
			dealerValueDisplay.text = handValue(dealerHand);
		}
		// display cash with $
		private function showCash() {
			cashDisplay.text = "Cash: $"+cash;
		}
		// display bet with $
		private function showBet() {
			betDisplay.text = "Bet: $"+bet;
		}
		// remove cards from table
		function resetCards() {
			while(cards.length > 0) {
				removeChild(cards.pop());
			}
		}
	}
}