一个简单的俄罗斯方块脚本
2007-12-06 09:48:43 来源：WEB开发网核心提示： 用JavaScript编写简单的俄罗斯方块，它是我以前在网上偶尔发现的，一个简单的俄罗斯方块脚本，觉得很有价值，于是收藏起来，值得学习，虽没有注释，遗憾的是，现在已经不知其出处了
用JavaScript编写简单的俄罗斯方块。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。
<HTML><HEAD><META NAME=Title CONTENT=JScript Simple Tetris><META content=text/html; charset=gb2312 http-equiv=Content-Type><TITLE>俄罗斯方块</TITLE><style>body {margin:0;background:black;}td {height:20;width:20;}#block_div {position:absolute;z-index:1;width:80;}#table_div {position:absolute;z-index:0;width:320;}#nblock_div {position:absolute;z-index:2;font:48 system;color:red;}#title_div {position:absolute;left:326;top:7;font-size:9pt;color:white}#infobar_div {position:absolute;left:396;top:416;}#infobar2_div {position:absolute;left:396;top:480;font-size:9pt;color:white}#infobar2_div a{color:99ccff;font:system;text-decoration:none}</style> <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)}elsealert(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;i<block_tbl.rows.length;i++){ for (var j=0;j<block_tbl.rows(i).cells.length;j++){ var d2 = i * 4 + j; if (block_type[d2]==1){ block_tbl.rows(i).cells(j).style.background = color; } else{ block_tbl.rows(i).cells(j).style.background = ; } } } block_div.style.pixelLeft=x; block_div.style.pixelTop=y;} function ShowBlock1(x,y,block_type,color,obj_tabID,obj_divID){ for (var i=0;i<obj_tabID.rows.length;i++){ for (var j=0;j<obj_tabID.rows(i).cells.length;j++){ var d2 = i * 4 + j; if (block_type[d2]==1){ obj_tabID.rows(i).cells(j).style.background = color; } else{ obj_tabID.rows(i).cells(j).style.background = ; } } } obj_divID.style.pixelLeft=x; obj_divID.style.pixelTop=y;} function Change(inc){ var type = curBlock.substr(0,4); var num = curBlock.substr(curBlock.length-1); num = parseInt(num) + inc; if (num>4||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<maxspeed) speed++; else speed=maxspeed; spd.innerText=speed; clearInterval(gameInterval); gameInterval=window.setInterval(Handle_Interval(),(maxspeed-speed+1)*60); }}</SCRIPT> <SCRIPT LANGUAGE=javascript FOR=document EVENT=onkeydown> if (document.all) document_onkeydown()</SCRIPT> </HEAD> <BODY LANGUAGE=javascript topmargin=0 leftmargin=0 scroll=no > <div id=block_div style=left:60;top:0><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></div> <div id=nblock_div><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></div> <div id=table_div><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></div> <div id=title_div nowrap style=width: 407; height: 24; font-style: normal; font-variant: normal; font-weight: normal; font-size: 12> <p align=center>请输入游戏速度（0－9）： <input type=text size=3 id=speedin style=font-size: 9pt name=SuperSo> <button onClick=begintet() id=but> <font style=font-size: 9pt face=Arial Black color=#FF0000>OK</font></button></div> <div id=infobar_div><table border=1 bordercolor=#000000 cellspacing=0 cellpadding=0><tr align=center><td style=color:99ccff;font-size: 9pt;width:60;>游戏速度：</td><td style=color:red;font-size: 9pt; id=spd>1</td><td style=color:99ccff;font-size: 9pt;width:60;>总 得 分：</td> <td style=color:red;font-size: 9pt; id=sco>0</td><td style=color:99ccff;font-size: 9pt;width:60;>清除行数：</td><td style=color:red;font-size: 9pt; id=cll>0</td></tr></table></div> <SCRIPT ID=MainSection LANGUAGE=javascript>if (document.all){ncid = Math.round(Math.random()*(colors.length-1));bid = Math.round(Math.random()*(blocks.length-1));nextBlock = blocks[bid];NewBlock();}function begintet(){document.all.speedin.disabled=truedocument.all.but.disabled=truespeed=parseInt(document.all.speedin.value);if (isNaN(speed)||speed==null||speed>maxspeed||speed<1) speed=1;spd.innerText=speed;gameInterval=window.setInterval(Handle_Interval(),(maxspeed-speed+1)*60);}</SCRIPT> </BODY></HTML>
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