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一个简单的俄罗斯方块脚本

摘要: 一个简单的俄罗斯方块脚本

这是一个简单的俄罗斯方块的源码，用JavaScript编写。它是我以前在网上偶尔发现的，觉得很有价值，于是收藏起来。遗憾的是，现在已经不知其出处了。
该脚本最大的特点(优点)是用数组存储所需数据，简化了编程，值得学习。虽没有注释，但看起来应该不难理解作者的思路。



<head>





俄罗斯方块



   

<script ID=clientEventHandlersJS LANGUAGE=javascript>

   

if (document.all){

var n_width = 800;

var n_height = 600;

var n_left = Math.round( screen.width/2 ) - n_width/2;

var n_top = Math.round( screen.height/2 ) - n_height/2;

var n_IncStep = 20;

var curBlcok,nextBlock;

var arr_curBlock = new Array(0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0);

var curX,curY;

var speed=1;

var maxspeed=9;

var clr_per_line=18;

var pause=0;

var gameover=0;

var colors = new Array("#999999","#0000FF","#80FFFF","#80FF80","#FFFF00","#FF8000","#FF00FF","#FF0000");

var cid;

var ncid;

var blocks = new Array("tt_O1","tt_T2","tt_Z1","tt_S1","tt_L1","tt_J1","tt_I2");

var bid;

var killedlines=0;

   

var tt_O1 = new Array(0,0,0,0,0,0,0,0,0,1,1,0,0,1,1,0);

var tt_O2 = new Array(0,0,0,0,0,0,0,0,0,1,1,0,0,1,1,0);

var tt_O3 = new Array(0,0,0,0,0,0,0,0,0,1,1,0,0,1,1,0);

var tt_O4 = new Array(0,0,0,0,0,0,0,0,0,1,1,0,0,1,1,0);

   

var tt_T1 = new Array(0,0,0,0,0,1,0,0,1,1,0,0,0,1,0,0);

var tt_T2 = new Array(0,0,0,0,0,0,0,0,1,1,1,0,0,1,0,0);

var tt_T3 = new Array(0,0,0,0,0,1,0,0,0,1,1,0,0,1,0,0);

var tt_T4 = new Array(0,0,0,0,0,1,0,0,1,1,1,0,0,0,0,0);

   

var tt_Z1 = new Array(0,0,0,0,1,1,0,0,0,1,1,0,0,0,0,0);

var tt_Z2 = new Array(0,0,0,0,0,0,1,0,0,1,1,0,0,1,0,0);

var tt_Z3 = new Array(0,0,0,0,0,1,1,0,0,0,1,1,0,0,0,0);

var tt_Z4 = new Array(0,0,1,0,0,1,1,0,0,1,0,0,0,0,0,0);

   

var tt_S1 = new Array(0,0,0,0,0,1,1,0,1,1,0,0,0,0,0,0);

var tt_S2 = new Array(0,0,0,0,0,1,0,0,0,1,1,0,0,0,1,0);

var tt_S3 = new Array(0,0,0,0,0,0,1,1,0,1,1,0,0,0,0,0);

var tt_S4 = new Array(0,1,0,0,0,1,1,0,0,0,1,0,0,0,0,0);

   

var tt_L1 = new Array(0,1,0,0,0,1,0,0,0,1,1,0,0,0,0,0);

var tt_L2 = new Array(0,0,0,0,0,0,1,0,1,1,1,0,0,0,0,0);

var tt_L3 = new Array(0,0,0,0,0,1,1,0,0,0,1,0,0,0,1,0);

var tt_L4 = new Array(0,0,0,0,0,1,1,1,0,1,0,0,0,0,0,0);

   

var tt_J1 = new Array(0,0,1,0,0,0,1,0,0,1,1,0,0,0,0,0);

var tt_J2 = new Array(0,0,0,0,1,1,1,0,0,0,1,0,0,0,0,0);

var tt_J3 = new Array(0,0,0,0,0,1,1,0,0,1,0,0,0,1,0,0);

var tt_J4 = new Array(0,0,0,0,0,1,0,0,0,1,1,1,0,0,0,0);

   

var tt_I1 = new Array(0,1,0,0,0,1,0,0,0,1,0,0,0,1,0,0);

var tt_I2 = new Array(0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1);

var tt_I3 = new Array(0,0,1,0,0,0,1,0,0,0,1,0,0,0,1,0);

var tt_I4 = new Array(0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1);

   

var table = new Array(

    1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,

    1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,

    1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,

    1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,

    1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,

    1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,

    1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,

    1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,

    1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,

    1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,

    1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,

    1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,

    1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,

    1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,

    1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,

    1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,

    1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,

    1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,

    1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,

    1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,

    1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,

    1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1)

}

else

alert("You need IE4+ to play Tetris!")

   

function dimension2(row,col,num){

    var i = row * num + col;

    return (this[i]);

}

Array.prototype.getd = dimension2;

   

function ShowBlock(x,y,block_type,color){

    for (var i=0;i4||num<1) num -= 4*inc;

    type += num;

    eval("arr_tmp = " + type + ";");

    if (CanMove(curX,curY,arr_tmp)){

        curBlock = type;

        eval("arr_curBlock = " + curBlock + ";");

        eval("ShowBlock(block_div.style.pixelLeft,block_div.style.pixelTop," + curBlock + ",colors[" + cid + "]);");

    }

}

   

function CanMove(x,y,block){

    for (i=0;i<4;i++){

        for (j=0;j<4;j++){

            if (block.getd(i,j,4)&table.getd(y/n_IncStep+i,x/n_IncStep+j,16)) return false;

        }

    }

    return true;

}

   

function NewBlock(){

    curBlock = nextBlock;

    cid = ncid;

    bid = Math.round(Math.random()*(blocks.length-1));

    ncid = Math.round(Math.random()*(colors.length-1));

    nextBlock = blocks[bid];

    eval("arr_curBlock = " + curBlock + ";");

    eval("ShowBlock(120,0," + curBlock + ",colors[" + cid + "]);");

    eval("arr_curBlock = " + curBlock + ";");

    eval("ShowBlock1(466,116," + nextBlock + ",colors[" + ncid + "],nblock_tbl,nblock_div);");

}

   

function SaveBlock(){

    for (i=0;i<4;i++){

        for (j=0;j<4;j++){

            table[(curY/n_IncStep+i)*16+curX/n_IncStep+j]|=arr_curBlock[i*4+j];

            if (arr_curBlock[i*4+j]==1)

                if ((curY/n_IncStep+i<21)&&(curX/n_IncStep+j>1)&&(curX/n_IncStep+j<14))

                    table_tbl.rows(curY/n_IncStep+i).cells(curX/n_IncStep+j).style.background = colors[cid];

            if (table[(curY/n_IncStep+i)*16+curX/n_IncStep+j]!=1)

                    table_tbl.rows(curY/n_IncStep+i).cells(curX/n_IncStep+j).style.background = "black";

        }

    }

}

   

function DelLine(line){

    for(i=line;i>0;i--){

        for(j=2;j<14;j++){

            table[i*16+j]=table[(i-1)*16+j];

        }

    }

    table_tbl.deleteRow(line);

    table_tbl.insertRow(0);

    for (i=0;i<16;i++){

        table_tbl.rows(0).insertCell();

        if (i<2||i>13) table_tbl.rows(0).cells(i).style.background="navy";       

    }

    killedlines++;

    cll.innerText=parseInt(cll.innerText)+1;

}

   

function DelLines(){

    var c,d,i,j;

    d=0;

    curY=block_div.style.pixelTop;

    for(i=(curY/20+3);i>curY/20-1;i--){

        c=0;

        for(j=2;j<14;j++){

            if (isNaN(table[i*16+j])||i==21) break;

            c+=table[i*16+j];

        }

        if(c==12){

            DelLine(i);

            i++;

            d++;

        }

    }

    if (d>0)

        sco.innerText=parseInt(sco.innerText)+d*d*36;

}

   

function Lucifer(){

    for(var i=2;i<14;i++){

        if (table[16+i]==1) return true;

    }

    return false;

}

   

function GameOver(){

    gameover=1;

    clearInterval(gameInterval);

    block_div.innerHTML="";

    for (i=0;i<21;i++){

        for (j=2;j<14;j++){

            setTimeout("table_tbl.rows(" + i + ").cells(" + j + ").style.background = colors[Math.round(Math.random()*7)];",16*i*j);

        }

    }

    nblock_div.innerHTML = "Game Over";

}

   

function document_onkeydown() {

    if (gameover==1) return;

    with (block_div.style){

    curX = pixelLeft;

    curY = pixelTop;

    switch (event.keyCode){

        case 37:

            if (CanMove(curX-n_IncStep,curY,arr_curBlock))

                pixelLeft-=n_IncStep;

            break;

        case 38:

            Change(1);

            break;

        case 39:

            if (CanMove(curX+n_IncStep,curY,arr_curBlock))

                pixelLeft+=n_IncStep;

            break;

        case 40:

            if (CanMove(curX,curY+n_IncStep,arr_curBlock)){

                pixelTop+=n_IncStep;

            }

            else{

                SaveBlock();

                DelLines();

                if (Lucifer()){

                    GameOver();

                    return;

                }

                sco.innerText=parseInt(sco.innerText)+2;

                NewBlock();

            }

            break;

        case 32:

            if (pause==0){

                clearInterval(gameInterval);

                pause=1;

            }

            else{

                gameInterval=window.setInterval("Handle_Interval()",(maxspeed-speed+1)*60);

                pause=0;

            }

            break;

        case 90:       

            Change(1);

            break;

        case 88:   

            Change(-1);

            break;

        default:

    }

    }

}

   

function Handle_Interval(){

    curX = block_div.style.pixelLeft;

    curY = block_div.style.pixelTop;

    if (CanMove(curX,curY+n_IncStep,arr_curBlock)){

        block_div.style.pixelTop+=n_IncStep;

    }

    else{

        SaveBlock();

        DelLines();

        if (Lucifer()){

            GameOver();

            return;

        }

        sco.innerText=parseInt(sco.innerText)+2

        NewBlock();

    }

    if (killedlines>=clr_per_line){

        killedlines-=clr_per_line;

        if (speed

<table id=block_tbl border=0 cellspacing=0 cellpadding=0>

<script>

if (document.all){

for (var i=0;i<4;i++){

    document.write("<tr>");

    for (var j=0;j<4;j++){

        document.write("<td style=\"border:1 solid black;\"></td>");

    }

    document.write("</tr>");

}

}

</script>

</table>

<table id=nblock_tbl border=0 cellspacing=0 cellpadding=0> <script> if (document.all){ for (var i=0;i<4;i++){ document.write("<tr>"); for (var j=0;j<4;j++){ document.write("<td style=\"height:40;width:40;border:1 outset black;\"></td>"); } document.write("</tr>"); } } </script> </table>

<table id=table_tbl border=0 cellspacing=0 cellpadding=0> <script> if (document.all){ for (var i=0;i<22;i++){ document.write("<tr>"); for (var j=0;j<16;j++){ var d2 = i * 16 + j; if (table[d2]==1) document.write("<td bgcolor=navy></td>"); else document.write("<td style=\"background:black;\"></td>"); } document.write("</tr>"); } } </script> </table>

请输入游戏速度（0－9）： <input type="text" size=3 id="speedin" style="font-size: 9pt" name="SuperSo">

[相关资源]
◆ bhw98的专栏：http://www.csdn.net/develop/author/netauthor/bhw98/

首次发布：2003-04-14
最后修订：2003-04-14

</td> </tr> <tr> <td vAlign=top align=left height="100%">
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