射击小球.txt

这个是 Java Script特效（新）,

<SCRIPT LANGUAGE="JavaScript">

// ---- Make array
function MakeArray( n){
    this.length = n;
    for (var i = 1; i <= n; i++) { 
        this[i] = 0 
    }
    return this
}

// ----- poor man's random number
var d0 = new Date();
var r0 = d0.getSeconds();
function poor_rand(){
    d1 = new Date();
    r0 = (r0 * r0 + r0 + d1.getSeconds()) % 3721 ;
    return r0 % width_n;
}

// ---- Parameters of game
var height_n = 8;
var width_n =5;

// ---- state of game
var enemy = new MakeArray( width_n); // enemy positions
var wtime; // wait time
var score; // points
var gameover; // in case of gameover set to true

// ----- Make the battlefield.
document.write( "<FORM NAME='fm1'>");
document.write( "<INPUT TYPE='text' NAME='message' SIZE=24>");
document.write( "</FORM>");
document.write( "<FORM NAME='fm2'><TABLE>");
for( var i=0; i<height_n; i++){
    document.write( "<TR>");
    for( var j=0;j<width_n; j++){
        document.write( "<TD><CENTER><INPUT TYPE='radio'></CENTER></TD>");
    }
    document.write( "</TR>");
}
document.write( "<TR>");
for( var j=0;j<width_n; j++){
    document.write( "<TD><INPUT TYPE='button' VALUE='-±-' onClick='fire("
        + j + ")'></TD>");
}
document.write( "</TR>");
document.write( "</TABLE>");
document.write( "<INPUT TYPE='button' VALUE='开始新游戏' onClick='game_start()'>");
document.write( "</FORM>");

// ----- game main timer event 
// -----     enemy come one step
function come(){
    var n = poor_rand();
    document.fm2.elements[ width_n * enemy[n+1] + n].checked = true;
    enemy[n+1]++;
    if( enemy[n+1] < height_n){
        setTimeout("come()", wtime);
    }else{
      gameover = true;
      document.fm1.message.value =  "游戏结束！你的得分是" + score +"分。" ;
    }
}

// ----- Fire the n th beam
function fire( n){
    if( gameover ) return;
    for( var i=0; i<enemy[n+1]; i++){ // clear enemy
        document.fm2.elements[ width_n * i + n].checked = false;
    }
    score += enemy[ n+1];
    document.fm1.message.value = "得分:" + score;
    enemy[ n+1] = 0;
    if( wtime > 100){ wtime -= 10};
}

// ---- initialize & start game
function game_start(){
   for( var n=0; n<width_n; n++){
        for( var i=0; i<enemy[n+1]; i++){
            document.fm2.elements[ width_n * i + n].checked = false;
        }
        enemy[n+1] = 0;
    }
    wtime = 400;
    score = 0;
    gameover = false;
    document.fm1.message.value = "得分:" + score;
    setTimeout("come()", wtime);
}

// -->
</SCRIPT>