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随笔 - 11 文章 - 3 trackbacks - 0
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最新评论
1. re: 一个事件绑定类,支持this
评论内容较长,点击标题查看
--treblam
2. re: 条件语句,为啥要将常量写在前面?
呵呵,原来是这个原因啊,我也一直纳闷为什么要这么写呢。
--treblam
3. re: 俄罗斯方块
这么牛的东西都,一定要顶了。
--trblam
阅读排行榜
1. 条件语句,为啥要将常量写在前面?(686)
2. 关于链接
上面直接写javascript事件的问题(382)
3. https协议空请求ie下报安全警告(361)
4. 俄罗斯方块(269)
5. 新写了一个兼容ie,ff的Storage类(242)
评论排行榜
1. 一个事件绑定类,支持this(1)
2. 条件语句,为啥要将常量写在前面?(1)
3. 俄罗斯方块(1)
4. 刚开通了这里的blog(0)
5. 贪食蛇(0)
贪食蛇
既然有了俄罗斯方块,那趁兴也来一个贪食蛇吧,虽然有人说是入门级代码必写的小东西,但是也花费了不少时间,没有用到过多的复杂处理。
源代码:
<!
DOCTYPE html PUBLIC
"
-//W3C//DTD XHTML 1.0 Transitional//EN
"
"
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd
"
>
<
html xmlns
=
"
http://www.w3.org/1999/xhtml
"
>
<
head
>
<
title
>
Snake
</
title
>
<
style type
=
"
text/css
"
>
body
{margin:
0
;padding:
0
;font
-
family:Verdana;}
.container
{border:2px solid #ccc;overflow:hidden;zoom:
1
;padding:10px;}
#game
-
area
{
float
:left;width:375px;height:300px;border:4px solid #
999
;padding:
0
;margin:
0
;font
-
size:
0
;line
-
height:
0
;overflow:hidden;}
#game
-
area ul
{overflow:hidden;zoom:
1
;padding:
0
;margin:
0
;}
#game
-
area ul li
{
float
:left;width:15px;height:15px;overflow:hidden;font
-
size:
0
;line
-
height:
0
;}
.black
{background
-
color:#ccc;}
.blue
{background
-
color:#1E87F0;}
.yellow
{background
-
color:#F77117;}
.green
{background
-
color:#91C846;}
.violet
{background
-
color:#E727CF;}
#game
-
oper
{
float
:left;display:inline;margin
-
left:20px;font
-
size:14px;}
#info
{font
-
size:16px;}
#sn
-
stage
{color:#1E87F0;font
-
weight:bold;}
#sn
-
score
{color:#F77117;font
-
weight:bold;}
#oper
{margin:10px
0
;}
#oper button
{font
-
size:14px;margin
-
right:5px;padding:2px 5px;font
-
family:Verdana;}
#debug
{color:#ff0000;font
-
weight:bold;}
</
style
>
</
head
>
<
body
>
<
div class
=
"
container
"
>
<
div id
=
"
game-area
"
></
div
>
<
div id
=
"
game-oper
"
>
<
h3
>
Snake Game
</
h3
>
<
div id
=
"
info
"
>
Stage :
<
span id
=
"
sn-stage
"
>
1
</
span
>
,
Score :
<
span id
=
"
sn-score
"
>
0
</
span
>
</
div
>
<
div id
=
"
oper
"
>
<
button id
=
"
begin
"
>
Begin
</
button
>
<
button id
=
"
restart
"
>
Again
</
button
>
</
div
>
<
div id
=
"
debug
"
></
div
>
</
div
>
</
div
>
<
script type
=
"
text/javascript
"
>
var
Snake
=
(
function
()
{
var
$
=
function
(s)
{
return
document.getElementById(s)}
;
var
timer
=
null
;
var
iSnake
=
null
;
//
蛇
var
speed
=
600
;
//
移动速度
var
dir
=
"
left
"
;
//
移动方向
var
isPause
=
false
;
//
暂停
var
isOver
=
false
;
var
createSnake
=
function
()
{
iSnake
=
[];
for
(
var
i
=
0
; i
<
4
; i
++
)
{
iSnake.push([
9
,(i
+
10
)]);
if
(
0
==
i)
{
$(
"
item-
"
+
9
+
"
-
"
+
(i
+
10
)).className
=
"
yellow
"
;
$(
"
item-
"
+
9
+
"
-
"
+
(i
+
10
)).title
=
"
head
"
;
}
else
{
$(
"
item-
"
+
9
+
"
-
"
+
(i
+
10
)).className
=
"
blue
"
;
$(
"
item-
"
+
9
+
"
-
"
+
(i
+
10
)).title
=
"
body
"
;
}
}
}
;
var
createWall
=
function
(level)
{
switch
(level)
{
case
1
:
for
(
var
i
=
1
; i
<
12
; i
++
)
{
for
(j
=
0
; j
<
2
; j
++
)
{
$(
"
item-
"
+
(j
+
6
)
+
"
-
"
+
i).className
=
"
black
"
;
$(
"
item-
"
+
(j
+
6
)
+
"
-
"
+
i).title
=
"
block
"
;
}
}
break
;
case
2
:
for
(
var
i
=
1
; i
<
15
; i
++
)
{
$(
"
item-4-
"
+
i).className
=
"
black
"
;
$(
"
item-4-
"
+
i).title
=
"
block
"
;
$(
"
item-
"
+
i
+
"
-20
"
).className
=
"
black
"
;
$(
"
item-
"
+
i
+
"
-20
"
).title
=
"
block
"
;
}
break
case
3
:
for
(
var
i
=
1
; i
<
12
; i
++
)
{
for
(j
=
0
; j
<
2
; j
++
)
{
$(
"
item-
"
+
(j
+
11
)
+
"
-
"
+
i).className
=
"
black
"
;
$(
"
item-
"
+
(j
+
11
)
+
"
-
"
+
i).title
=
"
block
"
;
}
}
for
(
var
i
=
10
; i
<
25
; i
++
)
{
for
(j
=
0
; j
<
2
; j
++
)
{
$(
"
item-
"
+
(j
+
4
)
+
"
-
"
+
i).className
=
"
black
"
;
$(
"
item-
"
+
(j
+
4
)
+
"
-
"
+
i).title
=
"
block
"
;
}
}
break
;
case
4
:
for
(
var
i
=
1
; i
<
12
; i
++
)
{
for
(j
=
0
; j
<
2
; j
++
)
{
$(
"
item-
"
+
(j
+
6
)
+
"
-
"
+
i).className
=
"
black
"
;
$(
"
item-
"
+
(j
+
6
)
+
"
-
"
+
i).title
=
"
block
"
;
}
}
break
;
case
5
:
for
(
var
i
=
1
; i
<
15
; i
++
)
{
$(
"
item-4-
"
+
i).className
=
"
black
"
;
$(
"
item-4-
"
+
i).title
=
"
block
"
;
$(
"
item-
"
+
i
+
"
-20
"
).className
=
"
black
"
;
$(
"
item-
"
+
i
+
"
-20
"
).title
=
"
block
"
;
}
break
case
6
:
for
(
var
i
=
1
; i
<
12
; i
++
)
{
for
(j
=
0
; j
<
2
; j
++
)
{
$(
"
item-
"
+
(j
+
11
)
+
"
-
"
+
i).className
=
"
black
"
;
$(
"
item-
"
+
(j
+
11
)
+
"
-
"
+
i).title
=
"
block
"
;
}
}
for
(
var
i
=
10
; i
<
25
; i
++
)
{
for
(j
=
0
; j
<
2
; j
++
)
{
$(
"
item-
"
+
(j
+
4
)
+
"
-
"
+
i).className
=
"
black
"
;
$(
"
item-
"
+
(j
+
4
)
+
"
-
"
+
i).title
=
"
block
"
;
}
}
break
;
case
7
:
for
(
var
i
=
1
; i
<
15
; i
++
)
{
$(
"
item-4-
"
+
i).className
=
"
black
"
;
$(
"
item-4-
"
+
i).title
=
"
block
"
;
$(
"
item-
"
+
i
+
"
-20
"
).className
=
"
black
"
;
$(
"
item-
"
+
i
+
"
-20
"
).title
=
"
block
"
;
}
break
}
;
}
;
var
resetSnake
=
function
(level)
{
dir
=
"
left
"
;
initBoard();
createWall(level);
createSnake();
createFood();
}
;
var
createFood
=
function
()
{
pauseSnake();
var
y
=
Math.ceil(Math.random()
*
22
)
+
1
;
var
x
=
Math.ceil(Math.random()
*
16
)
+
1
;
if
(
"
head
"
==
$(
"
item-
"
+
x
+
"
-
"
+
y).title
||
"
body
"
==
$(
"
item-
"
+
x
+
"
-
"
+
y).title
||
"
block
"
==
$(
"
item-
"
+
x
+
"
-
"
+
y).title)
{
createFood();
return
false
;
}
$(
"
item-
"
+
x
+
"
-
"
+
y).className
=
"
green
"
;
$(
"
item-
"
+
x
+
"
-
"
+
y).title
=
"
food
"
;
startSnake();
}
;
var
moveSnake
=
function
()
{
if
(isOver)
{pauseSnake();
return
false
;}
$(
"
item-
"
+
iSnake[iSnake.length
-
1
][
0
]
+
"
-
"
+
iSnake[iSnake.length
-
1
][
1
]).className
=
""
;
$(
"
item-
"
+
iSnake[iSnake.length
-
1
][
0
]
+
"
-
"
+
iSnake[iSnake.length
-
1
][
1
]).title
=
""
;
for
(
var
i
=
iSnake.length
-
1
; i
>
0
; i
--
)
{
iSnake[i][
0
]
=
iSnake[i
-
1
][
0
];
iSnake[i][
1
]
=
iSnake[i
-
1
][
1
];
$(
"
item-
"
+
iSnake[i][
0
]
+
"
-
"
+
iSnake[i][
1
]).className
=
"
blue
"
;
$(
"
item-
"
+
iSnake[i][
0
]
+
"
-
"
+
iSnake[i][
1
]).title
=
"
body
"
;
}
switch
(dir)
{
case
"
left
"
:
moveLeft();
break
;
case
"
right
"
:
moveRight();
break
;
case
"
top
"
:
moveTop();
break
;
case
"
bottom
"
:
moveBottom();
break
;
}
chkSnake();
if
(chkFood())
{
iSnake.push([iSnake[iSnake.length
-
1
][
0
],iSnake[iSnake.length
-
1
][
1
]]);
$(
"
item-
"
+
iSnake[iSnake.length
-
1
][
0
]
+
"
-
"
+
iSnake[iSnake.length
-
1
][
1
]).className
=
"
blue
"
;
$(
"
item-
"
+
iSnake[iSnake.length
-
1
][
0
]
+
"
-
"
+
iSnake[iSnake.length
-
1
][
1
]).title
=
"
body
"
;
setStage();
}
$(
"
item-
"
+
iSnake[
0
][
0
]
+
"
-
"
+
iSnake[
0
][
1
]).className
=
"
yellow
"
;
$(
"
item-
"
+
iSnake[
0
][
0
]
+
"
-
"
+
iSnake[
0
][
1
]).title
=
"
head
"
;
}
;
var
chkSnake
=
function
()
{
if
(
"
block
"
==
$(
"
item-
"
+
iSnake[
0
][
0
]
+
"
-
"
+
iSnake[
0
][
1
]).title
||
"
body
"
==
$(
"
item-
"
+
iSnake[
0
][
0
]
+
"
-
"
+
iSnake[
0
][
1
]).title)
{
pauseSnake();
isOver
=
true
;
$(
"
debug
"
).innerHTML
=
"
Game Over
"
;
$(
"
item-
"
+
iSnake[
0
][
0
]
+
"
-
"
+
iSnake[
0
][
1
]).style.backgroundColor
=
"
red
"
;
}
}
;
var
chkFood
=
function
()
{
if
(
"
food
"
==
$(
"
item-
"
+
iSnake[
0
][
0
]
+
"
-
"
+
iSnake[
0
][
1
]).title)
{
$(
"
sn-score
"
).innerHTML
=
parseInt($(
"
sn-score
"
).innerHTML,
10
)
+
10
;
createFood();
return
true
;
}
return
false
;
}
;
var
setStage
=
function
()
{
var
_score
=
parseInt($(
"
sn-score
"
).innerHTML,
10
);
var
_stage
=
1
;
if
(_score
>=
100
&&
_score
<
200
)
{
speed
=
500
;
_stage
=
2
;
}
else
if
(_score
>=
200
&&
_score
<
300
)
{
speed
=
400
;
_stage
=
3
;
}
else
if
(_score
>=
300
&&
_score
<
400
)
{
speed
=
300
;
_stage
=
4
;
}
else
if
(_score
>=
400
&&
_score
<
500
)
{
speed
=
200
;
_stage
=
5
;
}
else
if
(_score
>=
500
&&
_score
<
600
)
{
speed
=
100
;
_stage
=
6
;
}
else
if
(_score
>=
600
)
{
speed
=
80
;
_stage
=
7
;
}
0
==
_score
%
100
?
resetSnake(_score
/
100
) :
""
;
$(
"
sn-stage
"
).innerHTML
=
_stage;
}
;
var
moveLeft
=
function
()
{
iSnake[
0
][
1
]
=
iSnake[
0
][
1
]
-
1
;
}
;
var
moveRight
=
function
()
{
iSnake[
0
][
1
]
=
iSnake[
0
][
1
]
+
1
;
}
;
var
moveTop
=
function
()
{
iSnake[
0
][
0
]
=
iSnake[
0
][
0
]
-
1
;
}
;
var
moveBottom
=
function
()
{
iSnake[
0
][
0
]
=
iSnake[
0
][
0
]
+
1
;
}
;
var
pauseSnake
=
function
()
{
if
(
null
!=
timer)
{
clearInterval(timer);
timer
=
null
;
isPause
=
true
;
}
}
;
var
startSnake
=
function
()
{
if
(
null
==
timer)
{
timer
=
setInterval(
function
()
{moveSnake()}
,speed);
isPause
=
false
;
}
}
var
initBoard
=
function
()
{
var
_arr
=
[];
_arr.push(
"
<ul>
"
);
for
(
var
i
=
0
,j
=
0
,k
=
0
; i
<
500
; i
++
)
{
_arr.push(
"
<li id='item-
"
+
k
+
"
-
"
+
j
+
"
'
"
+
(
0
==
k
||
19
==
k
||
0
==
j
||
24
==
j
?
"
class='black' title='block'
"
:
""
)
+
"
></li>
"
);
j
++
;
if
(j
>
24
)
{j
=
0
;k
++
}
;
}
_arr.push(
"
</ul>
"
);
$(
"
game-area
"
).innerHTML
=
_arr.join(
""
);
document.onkeydown
=
function
(e)
{
switch
(keyCode(e))
{
case
37
:
if
(
"
right
"
==
dir
||
isPause)
{
return
false
}
;
//
pauseSnake();
dir
=
"
left
"
;
moveSnake();
//
startSnake();
break
;
case
39
:
if
(
"
left
"
==
dir
||
isPause)
{
return
false
}
;
//
pauseSnake();
dir
=
"
right
"
;
moveSnake();
//
startSnake();
break
;
case
38
:
if
(
"
bottom
"
==
dir
||
isPause)
{
return
false
}
;
//
pauseSnake();
dir
=
"
top
"
;
moveSnake();
//
startSnake();
break
;
case
40
:
if
(
"
top
"
==
dir
||
isPause)
{
return
false
}
;
//
pauseSnake();
dir
=
"
bottom
"
;
moveSnake();
//
startSnake();
break
;
}
}
$(
"
begin
"
).onclick
=
function
()
{
if
(
"
Begin
"
==
this
.innerHTML)
{
if
(
null
==
iSnake)
{
createSnake();
createFood();
startSnake();
}
else
{
startSnake();
isPause
=
false
;
}
this
.innerHTML
=
"
Pause
"
;
}
else
if
(
"
Pause
"
==
this
.innerHTML)
{
pauseSnake();
isPause
=
true
;
this
.innerHTML
=
"
Begin
"
;
}
}
$(
"
restart
"
).onclick
=
function
()
{
clearInterval(timer);
timer
=
null
;
dir
=
"
left
"
;
iSnake
=
null
;
isOver
=
false
;
initBoard();
speed
=
600
;
$(
"
sn-score
"
).innerHTML
=
"
0
"
;
$(
"
sn-stage
"
).innerHTML
=
"
1
"
;
$(
"
begin
"
).innerHTML
=
"
Begin
"
;
$(
"
debug
"
).innerHTML
=
""
;
}
}
;
var
keyCode
=
function
(evt)
{
evt
=
(evt)
?
evt : ((window.event)
?
window.event :
""
);
return
evt.keyCode
?
evt.keyCode : evt.which;
}
;
return
{
init : initBoard
}
;
}
)();
Snake.init();
</
script
>
</
body
>
</
html
>
posted on 2009-12-30 20:30
jacklau
阅读(189)
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