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Creating UnBeatable Tic-Tac-Toe

  1. Nov 8, 2009 #1
    So... yeah, I do not know much at all about coding and need to know if someone could make the script below work into being invincible.

    Code (Text):
     <Style Type="Text/CSS">
     <!--
     Input{}
     .blokje{
     Height:48px;
     Width:48px;
     Font-Size:16pt;
     Font-Weight:900;
     Font-Family:Comic Sans MS,Arial,Verdana;
     Text-Align:Center;
     }
     .knopje{
     Width:144px;
     }
     -->
     </Style>
    </HEAD>

    <!-- STEP TWO: Copy this code into the BODY of your HTML document  -->

    <BODY>

    <!-- This script and many more are available free online at -->
    <!-- The JavaScript Source!! http://javascript.internet.com -->
    <!-- Original:  Rob van der Ven (vennie@wanadoo.nl) -->
    <!-- Web Site:  [PLAIN]http://home.wanadoo.nl/vennie[/PLAIN] [Broken] -->
    <Center>

    <Form>
    <Input Type="Button" Title="Click here to play again" Name="beurten" Width="164px" Class="knopje" Value="Player 1" onClick="wie = 'Player 1'; initieer()">
    <Table CellPadding="0" CellSpacing="0" Border="0">

    <Script Language="JavaScript">
    <!--//
    for (i = 1; i < 10; i++) {
    if (i % 3 == 1) {document.write('<Tr>');}
    document.write('<Td><Input Type="Button" Name="' + i + '" Value="    " Class="blokje" onClick="wijzig(this.form,this)"></Td>');
    if (i % 3 == 0) {document.write('</Tr>');}
    }
    //-->
    </Script>

    </Table>

    <Input Type="CheckBox" Title="Click here to change from 2 players or computergame" Name="automaat" Value="2 players" Id="autmat" onClick="if (this.value == 'Computer') {this.value = '2 players'; auto = 0} else {this.value = 'Computer'; auto = 1}; wie = 'Player 1'; initieer();"><Label For="autmat">against the computer</Label>

    <Table CellPadding="0" CellSpacing="0" Border="1">
    <Tr BgColor="Silver">
    <Td Align="Center"> Player 1 </Td>
    <Td Align="Center"> Player 2 </Td>
    <Td Align="Center"> Remise </Td>
    </Tr>
    <Tr BgColor="Silver">
    <Td Align="Center"><Input Style="BackGround-Color:Transparent;Border:Solid 0px;Text-Align:Center" Type="Text" Size="3" ReadOnly Title="Player 1" Name="speler1" Value="0"></Td>
    <Td Align="Center"><Input Style="BackGround-Color:Transparent;Border:Solid 0px;Text-Align:Center" Type="Text" Size="3" ReadOnly Title="Player 2" Name="speler2" Value="0"></Td>
    <Td Align="Center"><Input Style="BackGround-Color:Transparent;Border:Solid 0px;Text-Align:Center" Type="Text" Size="3" ReadOnly Title="Remise" Name="remise" Value="0"></Td>
    </Tr>
    </Table>
    </Form>
    </Center>

    <Script Language="JavaScript">
    <!--//

    timerID = xtal = ytal = ztal = auto = 0;
    wie = 'Player 1';

    function initieer(){
        clearTimeout(timerID);
        cel = new Array(0,0,0,0,0,0,0,0,0,0);
        aanv = new Array(); strat = verd = leeg = aanv;
        beurt = wissel = 1; wint = keren = 0;
        document.forms[0].speler1.value = xtal;
        document.forms[0].speler2.value = ytal;
        document.forms[0].remise.value = ztal;
        if (wie != 'Start') {
        for (i in cel) {
                cel[i] = 0; if (i > 0) {document.forms[0].elements[i].value = ''};
                }
        }
        document.forms[0].beurten.value = wie;
    }

    function zetten() {
        clearTimeout(timerID);
        if (aanv[0] > 0) {
            slag = aanv[Math.floor(Math.random() * 10) % aanv.length]
        } else if (verd[0] > 0) {
            slag = verd[Math.floor(Math.random() * 10) % verd.length];
        } else if (strat[0] > 0) {
            slag = strat[Math.floor(Math.random() * 10) % strat.length];
        } else {
            slag = leeg[Math.floor(Math.random() * 10) % leeg.length];
        }

        if (beurt == 0 && slag > 0) {document.forms[0].elements[slag].click()};
    }


    function win() {
      if (  cel[1] + cel[2] + cel[3] == 3 ||
        cel[4] + cel[5] + cel[6] == 3 ||
        cel[7] + cel[8] + cel[9] == 3 ||
        cel[1] + cel[4] + cel[7] == 3 ||
        cel[2] + cel[5] + cel[8] == 3 ||
        cel[3] + cel[6] + cel[9] == 3 ||
        cel[1] + cel[5] + cel[9] == 3 ||
        cel[3] + cel[5] + cel[7] == 3
         ) {

        if (confirm("Player 1: You win !!!\nDo you want to play again?"))
        {
        wint = 1;
        xtal++; wie = 'Player 1'; timerID = setTimeout('initieer()',800)
        } else {
        xtal++; wie = 'Start'; timerID = setTimeout('initieer()',800)
        };
        }
      if (  cel[1] + cel[2] + cel[3] == 30 ||
        cel[4] + cel[5] + cel[6] == 30 ||
        cel[7] + cel[8] + cel[9] == 30 ||
        cel[1] + cel[4] + cel[7] == 30 ||
        cel[2] + cel[5] + cel[8] == 30 ||
        cel[3] + cel[6] + cel[9] == 30 ||
        cel[1] + cel[5] + cel[9] == 30 ||
        cel[3] + cel[5] + cel[7] == 30
         ) {
        if (confirm(((auto == 1) ? ('Computer wins, sorry') : ('Player 2: You win !!')) + "!\nDo you want to play again?")) {
        ytal++; wie = 'Player 1'; timerID = setTimeout('initieer()',800)
        } else {
        ytal++; wie = 'Start'; timerID = setTimeout('initieer()',800)
        };
       }
    }

    function wisselen(beurt){
      if (wissel == 1)  {
        if (beurt == 0) {
            beurt = 1;
            wie = "Player " + 1
        }
        else {
            if (auto == 0) {beurt = 0;
        wie = "Player " + 2} else {beurt = 0; wie = "Computer";}
        }
          if (keren == 9
         ) {
        if (confirm("Remise!!!\n\nDo you want to play again?")) {
        ztal++; wie = 'Player 1'; timerID = setTimeout('initieer()',800)} else
        {ztal++; wie = 'Start'; timerID = setTimeout('initieer()',800)};
          }

      }
      else {
        beurt = beurt;
      }
      wissel = 1;
      return(beurt);
    }

    function wijziging(klik) {

    plek = cel[klik]; geklikt = klik;

    if (plek == 0){
       if (beurt == 0){
        xo = "O";
        plek = 10;
       } else {
        xo = "X";
        plek = 1;
       }
    cel[klik] = plek; keren++;
    }
    else {
       if (plek == 10){
           xo = "O";}
       if (plek == 1){
           xo = "X";}
       wissel = 0
    }
    return(xo);
    }

    function verdedig() {leeg = new Array(); verd = new Array();
    for (i = 1; i < 10; i++) { oud = cel[i]; cel[i] = 1;
      if ( (cel[1] + cel[2] + cel[3] == 3 ||
        cel[4] + cel[5] + cel[6] == 3 ||
            cel[7] + cel[8] + cel[9] == 3 ||
            cel[1] + cel[4] + cel[7] == 3 ||
            cel[2] + cel[5] + cel[8] == 3 ||
            cel[3] + cel[6] + cel[9] == 3 ||
            cel[1] + cel[5] + cel[9] == 3 ||
            cel[3] + cel[5] + cel[7] == 3) && oud == 0
         ) { verd[verd.length] = i}
       cel[i] = oud;
       if (cel[i] == 0) {
       if (keren != 1) {leeg[leeg.length] = i} else
       if (cel[5] == 0) {leeg[0] = 5; leeg[1] = 10 - geklikt} else
       if (i % 2 != 0) {leeg[leeg.length] = i}
       };
    }
    }

    function aanval() {aanv = new Array();
    for (i = 1; i < 10; i++) { oud = cel[i]; cel[i] = 10;
      if ( (cel[1] + cel[2] + cel[3] == 30 ||
        cel[4] + cel[5] + cel[6] == 30 ||
            cel[7] + cel[8] + cel[9] == 30 ||
            cel[1] + cel[4] + cel[7] == 30 ||
            cel[2] + cel[5] + cel[8] == 30 ||
            cel[3] + cel[6] + cel[9] == 30 ||
            cel[1] + cel[5] + cel[9] == 30 ||
            cel[3] + cel[5] + cel[7] == 30) && oud == 0
         ) { aanv[aanv.length] = i}
    cel[i] = oud;
    }
    }

    function strategie() {strat = new Array();
    for (i = 1; i < 10; i++) { oud = cel[i]; cel[i] = 10;
      if ( (cel[1] + cel[2] + cel[3] == 20 ||
        cel[4] + cel[5] + cel[6] == 20 ||
            cel[7] + cel[8] + cel[9] == 20 ||
            cel[1] + cel[4] + cel[7] == 20 ||
            cel[2] + cel[5] + cel[8] == 20 ||
            cel[3] + cel[6] + cel[9] == 20 ||
            cel[1] + cel[5] + cel[9] == 20 ||
            cel[3] + cel[5] + cel[7] == 20) && oud == 0
         ) {
         if (keren != 3) {strat[strat.length] = i} else if (i % 2 != 0) {strat[strat.length] = i}
         }
    cel[i] = oud;
    }
    }

    function wijzig(form,element){
        wijziging(element.name);
        element.value = xo;
        beurt = wisselen(beurt);
        form.beurten.value = wie;
        verdedig(); aanval(); strategie(); win();
        if (auto == 0 || wint == 1) {return} else {
        timerID = setTimeout('zetten()',600)
        }
    }

    initieer();

    //-->
    </Script>

    <p><center>
    <font face="arial, helvetica" size"-2">Robert's Science Fair Page</a></font>
    </center><p>
     
     
    Last edited by a moderator: May 4, 2017
  2. jcsd
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