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path: root/examples/blackjack/blackjack.scxml
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<scxml
      xmlns="http://www.w3.org/2005/07/scxml" 
      initial="root" profile="ecmascript">
    <script><![CDATA[
                var Suits = "CDHS";
                var Ranks = "-A23456789TJQK";

                function Card (r,s)
                {
                    this.rank = r;
                    this.suit = s;
                    this.minValue = Math.min(r,10);
                    this.toString = function() {
                        return "" + Ranks[this.rank] + Suits[this.suit];
                    };
;
                }

                function updateDisplay ()
                {
                    cardsLabel.text = "My Cards: " + myDeck + " Dealer Cards: " + dealerCards;
                }

                


                function Deck()
                {
                    this.draw = function()
                    {
                        return this.cards.pop();
                    };
                    this.cards = new Array();
                    this.reset = function()
                   {
                        this.clear ();
                        for (var i=1; i <= 13; ++i)
                            for (var j = 0; j < 4; ++j)
                                this.cards.push(new Card(i,j));
                                    this.cards.sort(function (a,b)
                                    {
                                            return Math.random() * 3 - 1;
                                    });
                    };
                    
                    this.clear = function()
                    {
                        this.cards = new Array;
                    };
                    this.evalMin = function ()
                   {
                        var minVal = 0;
                        var cardCount = this.cards.length;
                        for (c in this.cards) {
                            minVal += this.cards[c].minValue;
                        }
                        if (cardCount > 4 && minVal < 22)
                            minVal = 21;
                        return minVal;
                    };

                    this.evalBest = function() 
                    {
                        var bestVal = this.evalMin();
                        if (bestVal > 21)
                            return 0;
                        else if (bestVal == 21)
                            return bestVal;

                        for (i in this.cards) {
                            if (this.cards[i].rank == 1)
                            {
                                var v = bestVal + 10;
                                if (v <= 21)
                                    bestVal = v;
                            }
                        }
                        return bestVal;

                    };
                    this.toString = function()                 
                    {
                        var s = "";
                        for (i in this.cards)
                            s += this.cards[i].toString() + ":";

                        return s;
                    };

                    this.drawFrom = function(d)
                    {
                        var c = d.draw ();
                        this.cards.push(c);
                        updateDisplay ();
                    };
                }


                function hitMe ()
                {
                    myDeck.drawFrom (availDeck);
                }
    ]]></script>
    <final id="exit" />
    <state id="root" initial="newgame">
    <onentry>
        <script>
                var myDeck = new Deck;
                var dealerCards = new Deck;
                var availDeck = new Deck;
                var pot = 0;
                var points = 1000;

        </script>

    </onentry>
        <invoke type="q-bindings">
            <content>
                [[welcomeLabel,"text","Welcome to Blackjack"]]
            </content>
    </invoke>
    <transition event="q-signal:newGameButton.clicked()" target="newgame" />
    <state id="newgame">
      <onentry>
        <script>
            points = 1000;
            pointsLabel.text = points;
        </script>
           </onentry>
           <transition target="newround" />
    </state>
      <state id="game">
        <transition event="q-signal:exitButton.clicked()" target="exit" />
      <state id="newround">
        <onentry>
          <script>
                pot = 0;
                availDeck.reset ();
                myDeck.clear ();
                dealerCards.clear();
                dealerCards.drawFrom(availDeck);
                hitMe ();
                hitMe ();
          </script>
        </onentry>
        <transition target="waitForBet" />
      </state>
      <state id="waitForBet">
        <invoke type="q-bindings"><content>
                [
                    [betEdit,"enabled",true],
                    [betButton,"enabled",true],
                    [surrenderButton,"enabled",true],
                    [welcomeLabel,"text","Please place your bet"]
                ]
        </content></invoke>
        <transition event="q-signal:betButton.clicked()" target="testCards" cond="parseInt(betEdit.text) &lt;= points">
            <script>
                pot = betEdit.text;
                points -= pot;
                pointsLabel.text = points;
            </script>
        </transition>
        <transition event="q-signal:betButton.clicked()" target="betTooHigh" cond="parseInt(betEdit.text) &gt; points">
         </transition>
        <transition event="q-signal:surrenderButton.clicked()" target="newround" />
      </state>
        <state id="betTooHigh">
            <transition target="waitForBet" />
        <onentry>
        <send event="bth-mb-timeout" delay="1500ms" />
        </onentry>
      </state>
      <state id="testCards">
        <transition target="loss" cond="myDeck.evalBest() == 0" />
        <transition target="getDealerCards" cond="myDeck.evalBest() == 21" />
        <transition target="waitForAction" cond="myDeck.evalBest() %21 != 0" />
      </state>

      <state id="waitForAction">
        <transition event="q-signal:hitButton.clicked()" target="testCards">
            <script>hitMe (); </script>
        </transition>
        <transition event="q-signal:standButton.clicked()" target="getDealerCards" />
         <invoke type="q-bindings"><content>
            [
                [welcomeLabel,"text","Hit/Stand?"],
                [hitButton,"enabled",true],
                [standButton,"enabled",true]
            ]
         </content></invoke>
      </state>

      <state id="getDealerCards">
         <onentry>
            <script><![CDATA[
                while (dealerCards.evalBest() > 0 && dealerCards.evalBest() < 17)
                {
                    dealerCards.drawFrom(availDeck);
                }
            ]]></script>
            <raise event="doneWithCards" />
         </onentry>
         <transition target="checkWinner" />
      </state>

      <state id="checkWinner">
        <onentry>
            <assign dataid="diff" expr="myDeck.evalBest() - dealerCards.evalBest()" />
        </onentry>

        <transition cond="_data.diff&gt;0" target="win" />
        <transition cond="_data.diff&lt;0" target="loss" />
        <transition cond="_data.diff==0" target="draw" />
      </state>
      <state id="endGame">
        <invoke type="q-bindings"><content>[[welcomeLabel,"text","Game Over"]]</content></invoke>
        <transition event="timeout" target="newgame" />
        <onentry>
            <send event="timeout" delay="3s" />
        </onentry>
      </state>
        <state id="endRound">
           <invoke type="q-bindings"><content>[[newRoundButton,"enabled",true]]</content></invoke>
           <transition event="q-signal:newRoundButton.clicked()" target="newround" />
           <transition event="timeout" target="newround" />
           <onentry>
            <send event="timeout" delay="3s" />
            </onentry>
             <state id="win">
                <onentry>
                  <script>
                      points = parseInt(points) + parseInt(pot) * 2;
                      pointsLabel.text = points;
                  </script>
                </onentry>
                <invoke type="q-bindings"><content>[[welcomeLabel,"text","You Won!"]]</content></invoke>
              </state>
              <state id="loss">
                <invoke type="q-bindings"><content>[[welcomeLabel,"text","You Lost..."]]</content></invoke>
                <transition cond="points == 0" target="endGame" />
              </state>
                <state id="draw">
                <invoke type="q-bindings"><content>[[welcomeLabel,"text","You It's a draw."]]</content></invoke>
                  <onentry>
                      <script>
                        points = parseInt(points) + parseInt(pot);
                        pointsLabel.text = points;
                      </script>
                  </onentry>
                </state>
            </state>
        </state>

    </state>

</scxml>