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  1. #1
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    javascript Space Invaders.... little help?

    Hello everyone, I recently found this script at: http://js-x.com/javascript/?view=671 . It's a javascript version of space invaders (l'm sure most of you have seen it before). I was attempting to adapt the script to run in <textarea> that is <TEXTAREA rows=18 cols=25> instead of the
    rows=20 cols=60 that the game currently runs on. So basically l'd want to remove one (or two) aliens from each row so that they fit in the resized text area, and probably remove one entire row of aliens just so they fit a little better. Problem is l can't seem to find that portion of the script for myself, l've been racking my brain for a couple nights trying to get this resized, but l just can't seem to get it done, would any of you be willing to help me out w/this? Here is the code, if so:

    Code:
    <html>
    <head>
    
    <SCRIPT LANGUAGE="JavaScript">
    <!--
    var timerID = null
    var patno=1
    var cr="\r\n"                  //for windows
    var blankno=0
    var totalblank=""
    var lr=1                       //if lr=-1 then left , lr=1 then right
    var lowerlf=""                 //lower side space
    var downlf=""                  //upper side space
    var downno=0
    var inplay=0
    var missilex=99                //missile position
    var missiley=99
    var mychrx=1                   //my chractor position
    var myblank=""
    var mymove=0
    var spcf1=""
    var spcf2=""
    var spcf3=""
    var hitflag=0
    var score=0
    var selec=0                    //machine select
    var mname=" Windows is"
    var rsmiss=""                  //missile no hit R side
    
    function array1(arn) {         //hanyou hairetu sakusei
       this.length = arn;
       for (var ar1 = 0; ar1 <= arn; ar1++) {
         this[ar1] = 1 }
         return this
         }
    
    function onloadmes(){
    document.fmark.win.value=" "
    cr = unescape("%0A")
    ver=navigator.appVersion
    len=ver.length
    for(iln=0;iln<len;iln++) if(ver.charAt(iln)=="(") break
    systm = ver.charAt(iln+1).toUpperCase()
    if(systm=="M"){cr = unescape("%0D")}
    if(systm=="W"){cr = unescape("%0D")+cr}
    if(systm=="C"){
                   cr = unescape("%0D")+cr
                   tmpsys = ver.charAt(0).toUpperCase()
                   if (tmpsys == 4){cr = unescape("%0D")}
    }
    // document.fmark.win.value=ver
     starter()
    }
    
    function initThis(){               //syokika
    blankx = new array1(63)        //Dim blankx(63)
    for (var makeblank = 0;makeblank < 63;makeblank++){
            blankx[makeblank]=""
            for (var addBlank = 0; addBlank < makeblank; addBlank++) {
            blankx[makeblank] = blankx[makeblank] + " "
            }
    }
    faker = new array1(24);        //faker(1) to (24) = facemark active flag
    face = new array1(2);          //Dim face(2)
    face[1]=" (^O^) "
    face[2]=" (^-^) "
    mestotal =new array1(4)        //Dim mestotal(4)
    
    interval1()
    }
    
    function restarter(){
    inplay=0
    blankno=0
    totalblank=""
    lr=1
    lowerlf=""
    downlf=""
    downno=0
    missilex=99
    missiley=99
    mychrx=1
    myblank=""
    mymove=0
    selec=1
    starter()
    }
    
    function starter(){
    document.fmark.win.value=cr+cr+cr+cr+cr+cr+cr+"                          Are you ready?"+cr+cr+cr+"                           Click FIRE!"
    selec=1
    }
    
    function goleft(){
     mymove=0
     mychrx=mychrx-1
     if (mychrx <= 0){mychrx=1}
    }
    function goright(){
     mymove=0
     mychrx=mychrx+1
     if (mychrx >= 56){mychrx=55}
    }
    
    function golmax(){
    if (inplay == 1){mymove=-1}
    }
    
    function gormax(){
    if (inplay == 1){mymove=1}
    }
    
    function fire(){
    if (inplay == 0){if (selec == 1){selec=9
                                     inplay=1
                                     initThis()}
    }else{
     if (missiley == 99){missiley=18
                         missilex=mychrx+3}
     }
    }
    
    function gameover(){           //GAME OVER syori
    score=0
    for (var enerme=1;enerme<25;enerme++){
      if (faker[enerme] == 1){score=score+1}
    }
     if (score == 0){
    document.fmark.win.value=cr+cr+cr+cr+cr+cr+cr+cr+"                        Congratulation!"+cr+cr+"                          ALL CREAR!!"
    }else{
    document.fmark.win.value=cr+cr+cr+cr+cr+cr+cr+cr+"                           GAME OVER"+cr+cr+"                        "+score+" ENEMY REMAINED"
    
    
    }
    inplay=0
    }
    
    function interval1(){          //warikomisyori 1
    if (missiley != 99) {missiley=missiley-1}
    if (missiley < 0){missiley=99}
    
    mychrx=mychrx+mymove
    if (mychrx <= 0){mychrx=1}
    if (mychrx >= 56){mychrx=55}
    blankno=blankno+lr             //offset count up
    totalblank = blankx[blankno]   //offset syori
    if (blankno >= 20) {lr=-1
                        downno=downno+1
                        blankno=20
                       }
    if (blankno <= 0) {lr=1
                        downno=downno+1
                        blankno=0
                       }
    if (downno >= 12) {gameover()}
    
    //upper side aria
       downlf=""
       for (var upperspc=0;upperspc<downno;upperspc++){
          if (missiley == upperspc){
          downlf=downlf+blankx[missilex]+"|"+cr
          }else{downlf=downlf+cr}
       }
    
    
    //facemark change
     if (inplay == 1){
       patno=patno+1
       if (patno >= 3) {patno = 1}
    
    //face aria
    
         for (var addline = 1; addline < 5; addline++){
         mestotal[addline]=totalblank
         rsmiss=""
           if (missiley == (downno+addline*2-2)){
            if (blankno <= missilex){
              hitflag=parseInt((missilex-blankno)/7,10)
              if (hitflag < 6){
                if ((missilex-blankno-(hitflag*7)) >= 1){
                 if ((missilex-blankno-(hitflag*7)) <= 5){
                   if (faker[(addline*6)+hitflag-5] == 1){
                     faker[(addline*6)+hitflag-5] = 0
                     missiley=99
                   }
                 }
                }
              }else{if (missilex > (blankno+42)){
                        rsmiss=blankx[missilex-blankno-42]+"|"
                                                }
              }
            }else{
             mestotal[addline]=blankx[missilex]+"|"
             if (missilex < (blankno-1)){
               mestotal[addline]=mestotal[addline]+blankx[blankno-1-missilex]
                                       }
            }
           }
    
            for (var addfaker = 1; addfaker < 7; addfaker++){
               if (faker[(addline*6)+addfaker-6] == 1){
                     mestotal[addline]=mestotal[addline]+face[patno]
               }else{mestotal[addline]=mestotal[addline]+"       "}
            }
            mestotal[addline]=mestotal[addline]+rsmiss
         }
    
    //space line in face aria
       spcf1=cr
       spcf2=cr
       spcf3=cr
       if (missiley == (downno+1)){spcf1=blankx[missilex]+"|"+cr}
       if (missiley == (downno+3)){spcf2=blankx[missilex]+"|"+cr}
       if (missiley == (downno+5)){spcf3=blankx[missilex]+"|"+cr}
    
    //lower side aria
       lowerlf=""
       for (var lowerspc=0;lowerspc<(11-downno);lowerspc++){
          if (missiley == (downno+7+lowerspc)){
          lowerlf=lowerlf+blankx[missilex]+"|"+cr
          }else{lowerlf=lowerlf+cr}
       }
       myblank=blankx[mychrx]
    
       document.fmark.win.value = downlf+mestotal[1]+cr+spcf1+mestotal[2]+cr+spcf2+mestotal[3]+cr+spcf3+mestotal[4]+cr+lowerlf+myblank+"  _A_  "+cr+myblank+" [___] "
    
       timerID = setTimeout("interval1()",250)
     }
    }
    
    //-->
    </SCRIPT>
    
    
    </head>
    <body>
    
    Put this in the body tag:<BR>
    <BODY onload="onloadmes()"><BR><BR>
    or <a href="javascript:onloadmes()">click here</a>
    
    
    <FORM NAME="fmark">
    <center>
    <textarea NAME="win" rows=20 cols=60>
    You must get Netscape2.0 or later.
    If you use Netscape 4.0b1, CLICK RESET!
    </textarea>
    </center>
    <center>
    <pre><INPUT TYPE="button" VALUE="  " ONCLICK="golmax()"><INPUT TYPE="button" VALUE=" LEFT " ONCLICK="goleft()"> <INPUT TYPE="button" VALUE="FIRE" ONCLICK="fire()"> <INPUT TYPE="button" VALUE="RIGHT" ONCLICK="goright()"><INPUT TYPE="button" VALUE="  " ONCLICK="gormax()"></pre>
    </center>
    <br><p>
    <center><pre><INPUT TYPE="button" VALUE="     RESET     " ONCLICK="restarter()"></pre>
    
    <hr>
    <input type=button value=Close onClick='window.close()'>
    </center>
    
    </FORM>
    
    <BR><center><a href='http://www.js-x.com'>JS-X.com</a></center> 
    </body>
    </html>

  • #2
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    Firstly, please edit your post and return the credits to the script so that additional copies of this script are not distibuted without due credit......

    I would also hope that you return the credits to the page you are using this script on.

    <!--
    This file retrieved from the JS-Examples archives
    http://www.js-x.com
    1000s of free ready to use scripts, tutorials, forums.
    Author: Artem - http://javascript4free.by.ru
    -->
    ......Willy

  • #3
    New Coder
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    Firstly, please edit your post and return the credits to the script so that additional copies of this script are not distibuted without due credit......
    zoinks, guess ya can't read very well....

    Hello everyone, I recently found this script at: http://js-x.com/javascript/?view=671
    I would also hope that you return the credits to the page you are using this script on.
    It's something l'm working on for personal use, but thanks for the umm... 'errrrrr (?) help l guess.

    ~JSlime

  • #4
    Smokes a Lot
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    Quote Originally Posted by JSlime
    zoinks, guess ya can't read very well....

    It's something l'm working on for personal use, but thanks for the umm... 'errrrrr (?) help l guess.

    ~JSlime
    I think it is you who perhaps can't read very well.
    http://js-x.com/user_agreement/

    By posting the code in this forum without the credits in tact you are technically distributing the code in that way. Making it no longer just for your personal use.

    Basscyst
    Helping to build a bigger box. - Adam Matthews

  • #5
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    I read fine and even between the lines. And it does not take a rocket scientist to see that someone spent quite a bit of time writing that script and experience shows that there should have been credits within all those comments somewhere....

    And even if you did not provide a link to the site you found the script on.
    It would take me less than 10 seconds to do a search using one of the functions such as: document.fmark.win.value=" "
    To return http://www.google.com/search?sourcei...alue%3D%22+%22

    It's a shame you did not find my help helpful. But all you would have had to do was respect both the orginal author and this forum by editting your post to include the credits which you removed.....

    Have a nice day;
    .....Willy
    Last edited by Willy Duitt; 07-11-2004 at 02:40 AM.


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