一个javascript脚本写的俄罗斯方块 （2）Russia.js

var Cols = 10, Rows = 20, Sqlen = 16;
var Color = new Array(8);
var delLine = new Array();
var CLoc = new Array();
var RLoc = new Array();
var CurSq,NextSq;
var type=-1,oldtype;
var delay = new Array(600,500,400,300,200,100,90,80,70);
var TimerID;
var pos = 0,end,level=0,score=0,lines=0;
var isOver=false,isPause=false;

Color[0] = "#d0d0d0";
Color[1] = "red";
Color[2] = "green"
Color[3] = "cyan";
Color[4] = "yellow";
Color[5] = "orange";
Color[6] = "pink";
Color[7] = "blue";


function GameArea(row,col,name){
var s = "<TABLE BORDER=1 cellspacing=0 cellpadding=1 bgcolor=" + Color[0] + ">";
for(var i=0; i<row; i++){
  s = s + "<TR Height=" + Sqlen + ">";
  for(var j=0; j<col; j++){
   var id = name + i + "#" + j;
   s = s + "<TD Width=" + Sqlen + " class=btnup id=" + id;
   s = s + " style=/"background:" + Color[0] + "/"> </TD>"
  }
  s = s + "</TR>";
}
s = s + "</TABLE>";
return s;
}

function Init(){
GameBody.innerHTML = GameArea(Rows,Cols,'Main');
GameForecast.innerHTML = GameArea(4,4,'Forecast');
}

function Square(cols,rows,color){
this.rows = rows;
this.cols = cols;
this.color = color;
}

function chooseSquare(type,x,y){
var sq = new Array(4);
switch(type){
  case 0:
   sq[0] = new Square(x-1,y,1);
   sq[1] = new Square(x,y,1);
   sq[2] = new Square(x+1,y,1);
   sq[3] = new Square(x+2,y,1);
   break;
  case 1:
   sq[0] = new Square(x,y,5);
   sq[1] = new Square(x,y+1,5);
   sq[2] = new Square(x+1,y+1,5);
   sq[3] = new Square(x,y+2,5);
   break;
  case 2:
   sq[0] = new Square(x,y,2);
   sq[1] = new Square(x,y+1,2);
   sq[2] = new Square(x+1,y+1,2);
   sq[3] = new Square(x+1,y+2,2);
   break;
  case 3:
   sq[0] = new Square(x+1,y,7);
   sq[1] = new Square(x+1,y+1,7);
   sq[2] = new Square(x,y+1,7);
   sq[3] = new Square(x,y+2,7);
   break;
  case 4:
   sq[0] = new Square(x,y,3);
   sq[1] = new Square(x+1,y,3);
   sq[2] = new Square(x,y+1,3);
   sq[3] = new Square(x+1,y+1,3);
   break;
  case 5:
   sq[0] = new Square(x,y,6);
   sq[1] = new Square(x+1,y,6);
   sq[2] = new Square(x+1,y+1,6);
   sq[3] = new Square(x+1,y+2,6);
   break;
  case 6:
   sq[0] = new Square(x+1,y,4);
   sq[1] = new Square(x,y,4);
   sq[2] = new Square(x,y+1,4);
   sq[3] = new Square(x,y+2,4);
   break;
}
return sq;
}

function reDraw(name,sq){
var obj;
for(var i=0; i<sq.length; i++){
  obj = document.all(name + sq[i].rows + "#" + sq[i].cols);
  obj.style.background = Color[sq[i].color];
}
}
function clearDraw(name,sq){
var obj;
for(var i=0; i<sq.length; i++){
  obj = document.all(name + sq[i].rows + "#" + sq[i].cols);
  obj.style.background = Color[0];
}
}

function isBounds(sq){
for(var i=0; i<sq.length; i++){
  if(sq[i].cols<0 || sq[i].cols>9 || sq[i].rows<0 || sq[i].rows>19)
   return false;
}
return true;
}

function SortSquare(sq,name,isMax){
if(isMax){
  var Max = 0;
  if(name=="Rows"){
   for(var i=0; i<sq.length; i++){
    if(sq[i].rows>Max) Max = sq[i].rows;
   }
  }
  else{
   for(var i=0; i<sq.length; i++){
    if(sq[i].cols>Max) Max = sq[i].cols;
   }   
  }
  return Max;
}
else{
  var Min = 20;
  if(name=="Rows"){
   for(var i=0; i<sq.length; i++){
    if(sq[i].rows<Min) Min = sq[i].rows;
   }
  }
  else{
   for(var i=0; i<sq.length; i++){
    if(sq[i].cols<Min) Min = sq[i].cols;
   }  
  }
  return Min;
}
}

function StartGame(){
start.disabled = true;
pause.focus();
type = parseInt(Math.random()*7);
oldtype = type;
type = parseInt(Math.random()*7);
var m = 4/2 -1;
NewSq = chooseSquare(type,m,0);
reDraw('Forecast',NewSq);
Start();
}
function Start(){
if(isOver){
  var s = "本次游戏结束！ ";
  OverGame(s);
}
gScore.innerText = score;
gLine.innerText = lines;
gLevel.innerText = level;
oldtype = type;
clearDraw('Forecast',NewSq);
type = parseInt(Math.random()*7);
var m = 4/2 -1;
NewSq = chooseSquare(type,m,0);
reDraw('Forecast',NewSq);
var mm = Cols/2 -1;
CurSq = chooseSquare(oldtype,mm,0);
reDraw('Main',CurSq);
window.clearInterval(TimerID);
TimerID = window.setInterval("Run()",delay[level]);
}
function Run(){
if(isPause) return;
if(MoveCurSq(0,1,false) == false){
  window.clearInterval(TimerID);
  if(RemoveLines()==true) {
   DelLines();
   lines = lines + delLine.length;
   switch(delLine.length){
    case 1:
     score = score + 100;
     break;
    case 2:
     score = score + 300;
     break;
    case 3:
     score = score + 700;
     break;
    case 4:
     score = score + 1000;
     break;
   }

   level = parseInt(score/10000);
  }
  Start();
}
}

function RemoveLines(){
var obj,m=0;
var isRemove = true;
var searchPos = true;
var del = new Array();
for(var i=19; i>=0; i--){
  for(var j=0; j<10; j++){
   obj = document.all("Main" + i + "#" + j);
   if(obj.style.background == Color[0]){
    isRemove = false;
   }
   else{
    searchPos = false;
   }
  }
  if(searchPos) {
   end = i;
   if(del.length>0){delLine=del;return true;}
   else{return false;}
  }
  if(isRemove) {del[m] = i; m++;}
  searchPos = true;
  isRemove = true;
}
}

function DelLines(){
var deleted = 0;
var obj;
for(var i=0; i<delLine.length; i++){
  for(var j=0; j<10; j++){
   obj = document.all("Main" + delLine[i] + "#" + j);
   obj.style.background = Color[0];
  }
  deleted = deleted + 1;
  if(delLine.length>deleted)
  {
   if(delLine[i]-delLine[i+1]>1) ReDrawLine(delLine[i+1],delLine[i],deleted);
  }
}
ReDrawLine(end,delLine[delLine.length - 1],deleted);
}

function ReDrawLine(endline,startline,moveline){
var obj;
for(var i= startline - 1; i>endline; i--){
  for(var j=0; j<10; j++){
   obj = document.all("Main" + i + "#" + j);
   var oldcolor = obj.style.background;
   obj.style.background = Color[0];
   var rowid = i + moveline;
   obj = document.all("Main" + rowid + "#" + j);
   obj.style.background = oldcolor;
  }
}
}

function MoveSquare(from,to){
if(isBounds(to) == false) return false;
var obj;
loop:
for(var i=0; i<to.length; i++){
  obj = document.all("Main" + to[i].rows + "#" + to[i].cols);
  if(obj.style.background != Color[0]){
   for(var j=0; j<from.length; j++)
    if(to[i].cols==from[j].cols&&to[i].rows==from[j].rows&&to[i].color==from[j].color)
     continue loop;
    return false
  }
}
return true;
}

function MoveCurSq(x,y,isRotate){
NextSq = new Array(CurSq.length);
for(var i=0; i<CurSq.length; i++){
  if(isRotate){
   var dx = CurSq[i].cols - CurSq[0].cols;
   var dy = CurSq[i].rows - CurSq[0].rows;
   NextSq[i] = new Square(CurSq[0].cols-dy,CurSq[0].rows+dx,CurSq[i].color);
  }
  else
   NextSq[i] = new Square(CurSq[i].cols+x,CurSq[i].rows+y,CurSq[i].color);
}
if(isRotate) reNextSq();
if(MoveSquare(CurSq,NextSq) == false){
  for(var i=0; i<CurSq.length; i++){
   if((CurSq[i].rows==0&&CurSq[i].cols==Cols/2)||(CurSq[i].rows==0&&CurSq[i].cols==Cols/2-1))
    isOver = true;
  }
  return false;
}

clearDraw('Main',CurSq);
CurSq = NextSq;
reDraw('Main',CurSq);
return true;
}

function reNextSq(){
var minCols = SortSquare(NextSq,'Cols',false);
var minRows = SortSquare(NextSq,'Rows',false);
var maxCols = SortSquare(NextSq,'Cols',true);
var maxRows = SortSquare(NextSq,'Rows',true);

if(minCols<0)  changeNextSq('Cols',-minCols);
if(minRows<0)  changeNextSq('Rows',-minRows);
if(maxCols>9)  changeNextSq('Cols',9-maxCols);
if(maxRows>19) changeNextSq('Rows',19-maxRows);
}

function changeNextSq(name,pos){
for(var i=0; i<NextSq.length; i++){
  if(name="Rows")
   NextSq[i].rows = NextSq[i].rows + pos;
  else
   NextSq[i].cols = NextSq[i].cols + pos;
}
}

function keyDown(){
switch(event.keyCode){
  case 40:
   MoveCurSq(0,1,false);
   break;
  case 37:
   MoveCurSq(-1,0,false);
   break;
  case 38:
   MoveCurSq(0,0,true);
   break;
  case 39:
   MoveCurSq(1,0,false);
   break;
}
}

function PauseGame(){
if(pause.innerText == "暂停游戏"){
  isPause = true;
  pause.innerText = "继续游戏";
  pause.focus();
}
else{
  isPause = false;
  pause.innerText = "暂停游戏";
  pause.focus();
  Run();
}
}

function OverGame(str){
if(typeof(str)=="undefined") str = "你的得分：" + score +"。是否重玩游戏？ ";
else str = str + "你的得分：" + score +"。是否重玩游戏？ ";

var isOK = window.confirm(str);
if(!isOK) {
  document.location.reload();
  window.close();
}
else{
  document.location.reload();
}
}