DHTML制作的俄罗斯方块（二）

abe整理

//inc为1时逆时针
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(){
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";
gameover=1;
}

function ChangeMusic(i){
if (isNaN(i))
bk_Music.src=i;
else
bk_Music.src="Music/back" + i + ".mid";
}

/**************************************
* 事件函数
**************************************/
function window_onload() {
window.resizeTo(n_width,n_height);
window.moveTo(n_left,n_top);
}

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();
sco.innerText=parseInt(sco.innerText)+2;
DelLines();
if (Lucifer())
GameOver();
else
NewBlock();
}
break;
case 32:
if (pause==1){
clearInterval(gameInterval);
pause=0;
}
else{
gameInterval=window.setInterval("Handle_Interval()",(maxspeed-speed+1)*60);
pause=1;
}
break;
case 90: //“Z”，顺时针
Change(1);
break;
case 88: //“X”，逆时针
Change(-1);
break;
default:
}
}
}

function Handle_Interval(){
if (gameover==1) return;
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();
sco.innerText=parseInt(sco.innerText)+2
DelLines();
if (Lucifer())
GameOver();
else
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);
ChangeMusic("Music/bgm01.mid");
setTimeout("ChangeMusic(Math.round(Math.random()*2));",4000);
}
}
//-->
</SCRIPT>

<SCRIPT LANGUAGE=javascript FOR=document EVENT=onkeydown>

</SCRIPT>

</HEAD>
　　（未完待续）