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初试javascript ：贪吃蛇啊
摘要: javascript 贪吃蛇 游戏
好久没接触javascript，近日看了看，试试手
界面是参考 lxx8402的俄罗斯方块方法，觉得不错，借用了谢谢，不要P我
原码如下,写的仓促，也没有放积分，参数可以自己修改前面的默认值，
初次发布，恳请交流指教~~~*_*:
tcs.html:
HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<head>
</head>
<script LANGUAGE="JavaScript">
//========================================
//定义果实
function nut()
{
this.x = -1;
this.y = -1;
}
function nut_show()
{
if (this.x<0 || this.y < 0 )
return;
obj = document.all("Main" + this.x + "#" + this.y);
obj.style.background = Color[2];
}
function nut_create()
{
var inx = -1;
var iny = -1;
for(;;)
{
var cur = true;
inx = Math.round(Math.random() * (row-1));
iny = Math.round(Math.random() * (col-1));
for (var i = 0; i
if (s.items[i].x == inx && s.items[i].y == iny)
{
cur = false;
break;
}
}
if (cur)
{
break;
}
}
this.x = inx;
this.y = iny;
nutad[0] = inx;
nutad[1] = iny;
this.show();
}
function nut_eated()
{
if (this.x<0 || this.y < 0)
return;
obj = document.all("Main" + this.x + "#" + this.y);
obj.style.background = Color[0];
}
nut.prototype.create = nut_create;
nut.prototype.show = nut_show;
nut.prototype.eated = nut_eated;
//========================================
//定义蛇体
function snake()
{
this.items = new Array();
}
function snake_eat(nt)
{
var s_length = this.items.length;
this.items[s_length] = nt;
}
function snake_move(dir)
{
this.destroy();
var y = this.items[0].y;
var x = this.items[0].x;
var nx = x + dir[1];
var ny = y + dir[0];
if (nx <0 || nx >= row || ny <0 || ny >= col || crossed(nx,ny))
{
end = true;
return;
}
caneat(nx,ny);
for (var i = this.items.length-1 ; i>=0 ; i --)
{
if (i != 0)
{
this.items[i].move(this.items[i-1].x,this.items[i-1].y);
}
else
{
this.items[i].move(nx,ny);
}
}
this.reload();
}
function caneat(nx,ny)
{
if (nx == nutad[0] && ny == nutad[1])
{
var lst = s.items[s.items.length-1];
var nd = new snakeNode(lst.x,lst.y);
s.eat(nd);
n.eated();
n.create();
}
}
//禁止穿越自身节点
function crossed( nx, ny )
{
for (var i = 0; i
if (s.items[i].x == nx && s.items[i].y == ny)
{
return true;
}
}
return false;
}
function snake_reload()
{
for (var i = 0 ; i<this.items.length ; i ++)
obj = document.all("Main" + curNode.x + "#" + curNode.y);
obj.style.background = Color[1];
}
}
function snake_destroy()
{
for (var i = 0 ; i<this.items.length ; i ++)
obj = document.all("Main" + curNode.x + "#" + curNode.y);
obj.style.background = Color[0];
}
}
function snake_clear()
{
this.destroy();
this.items = new Array();
}
snake.prototype.eat = snake_eat;
snake.prototype.move = snake_move;
snake.prototype.reload = snake_reload;
snake.prototype.destroy = snake_destroy;
snake.prototype.clear = snake_clear;
//蛇体节点
function snakeNode(x,y)
{
this.id = 0;//编号
this.x = x;//坐标X
this.y = y;//坐标Y
this.color = "#000000";
}
function snakeNode_setC(d_color)
{
this.color = d_color;
}
function snakeNode_move(dx,dy)
{
this.x = dx;
this.y = dy;
}
snakeNode.prototype.setColor = snakeNode_setC ;
snakeNode.prototype.move = snakeNode_move ;
//========================================
//程序界面
//初始化主控制区
function DrawArea(row,col,name){
var s = "<table BORDER=1 cellspacing=0 cellpadding=1 bgcolor=" + Color[0] + ">";
for(var i=0; i
for(var j=0; j
s = s + "<td Width=" + size + " class=btnup id=" + id;
}
s = s + "</tr>";
}
s = s + "</table>";
return s;
}
//初始化
function Init(){
MainArea.innerHTML = DrawArea(row,col,'Main');
}
//==================================
//程序控制区，用来接收输入、定义控制方法
//控制输入
function keyDown(){
switch(event.keyCode)
{
case 37:
if (curr_direction[0] != -1)
{
move_direction[0] = -1;
move_direction[1] = 0;
}
break;
case 38:
if (curr_direction[1] != -1)
{
move_direction[0] = 0;
move_direction[1] = -1;
}
break;
case 39:
if (curr_direction[0] != 1)
{
move_direction[0] = 1;
move_direction[1] = 0;
}
break;
case 40:
if (curr_direction[1] != 1)
{
move_direction[0] = 0;
move_direction[1] = 1;
}
break;
}
}
function Begin()
{
end = false;
paused = false;
s.clear();
for (var i = 8; i >=0 ; i--)
{
sn = new snakeNode(0,i);
s.eat(sn);
}
n.eated();
n.create();
move_direction[0] = 1;
move_direction[1] = 0;
curr_direction[1] = s.items[1].x - s.items[0].x;
curr_direction[0] = s.items[1].y - s.items[0].y;
Start();
}
//启动开关
function Start()
{
if (end)
{
s.reload();
alert("挂了！");
return;
}
window.clearInterval(TimerID);
TimerID = window.setInterval("Run()",delay);
}
//运行主体
var d = true;
function Run(){
if(paused) return;
if(true){
window.clearInterval(TimerID);
s.move(move_direction);
curr_direction[1] = s.items[1].x - s.items[0].x;
curr_direction[0] = s.items[1].y - s.items[0].y;
Start();
}
}
//暂停开关
function Pause()
{
if (paused)
{
paused = false;
if (!end)
{
Run();
}
}
else
{
paused = true;
}
}
//结束
function Over()
{
end = true;
}
//
</script>
<body BGCOLOR="#FFFFFF" onload="Init()" onkeydown="keyDown()" leftmargin="0" topmargin="0" marginwidth="0" marginheight="0">
<table border="0" cellspacing="0" cellpadding="0" align="center" width="80%">
<tr>
<tr valign="top" width="80%">
<td></td>
<td align="center">
</td>
</tr>
</table>
</body>