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📁 javascript常见小游戏,谈吃蛇
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            <P>var BorderW = 5;<BR>var oSpeed = 1<BR>var Scores = 0;</P>
            <P>var SnakeHeakColor = 'blue';<BR>var SnakeBodyColor = 
            'orange';<BR>var SnakeTailColor = 'yellow';</P>
            <P>&nbsp;</P>
            <P>&nbsp;</P>
            <P>function CreatMainMap(){<BR>MainMap = [];<BR>for(var 
            y=0;y&lt;Rows;y++){<BR>&nbsp;MainMap[y] = [];<BR>&nbsp;for(var 
            x=0;x&lt;Cells;x++){<BR>&nbsp; MainMap[y][x] = '';<BR>&nbsp; 
            }<BR>&nbsp;}<BR>}</P>
            <P>function CreateFood(){<BR>var x = 
            parseInt(Math.random()*Cells);<BR>var y = 
            parseInt(Math.random()*Rows);<BR>if(MainMap[y][x] == 
            ''){<BR>&nbsp;Score.innerHTML = 
            Scores++;<BR>&nbsp;Base.insertAdjacentHTML("beforeEnd","&lt;div 
            style='position:absolute;left:"+x*MapW+";top:"+y*MapH+";width:"+MapW+";height:"+MapH+";background:red;'&gt;");<BR>&nbsp;MainMap[y][x] 
            = 'F';<BR>&nbsp;}<BR>else CreateFood();<BR>}</P>
            <P>function 
            CreateSnake(){<BR>Base.insertAdjacentHTML("beforeEnd","&lt;span 
            x="+SnakeX+" y="+SnakeY+" 
            style='position:absolute;left:"+SnakeX*MapW+";top:"+SnakeY*MapH+";width:"+MapW+";height:"+MapH+";background:"+SnakeHeakColor+";'&gt;&lt;/span&gt;");<BR>MainMap[SnakeY][SnakeX] 
            = 'S';<BR>}</P>
            <P>&nbsp;</P>
            <P>&nbsp;</P>
            <P>var GoX = 0;<BR>var GoY = 0;<BR>var GoTime = 0;</P>
            <P>function Dir(x,y){<BR>GoX = (-GoX==x)?GoX:x;<BR>GoY = 
            (-GoY==y)?GoY:y;<BR>if(!GoTime) GoTime = 
            setInterval(Move,oSpeed);<BR>}</P>
            <P>function Move(){<BR>SnakeX = 
            (SnakeX+GoX&lt;0)?Cells-1:((SnakeX+GoX&gt;Cells-1)?0:SnakeX+GoX);<BR>SnakeY 
            = 
            (SnakeY+GoY&lt;0)?Rows-1:((SnakeY+GoY&gt;Rows-1)?0:SnakeY+GoY);<BR>if(MainMap[SnakeY][SnakeX] 
            == ''){<BR>&nbsp;AllSnakes[AllSnakes.length-1].style.background = 
            SnakeBodyColor;<BR>&nbsp;MainMap[AllSnakes[0].y][AllSnakes[0].x] = 
            '';<BR>&nbsp;AllSnakes[0].removeNode(true);<BR>&nbsp;if(AllSnakes.length&gt;1) 
            AllSnakes[0].style.background = 
            SnakeTailColor;<BR>&nbsp;CreateSnake();<BR>&nbsp;return;<BR>&nbsp;}<BR>if(MainMap[SnakeY][SnakeX] 
            == 'F'){<BR>&nbsp;AllSnakes[AllSnakes.length-1].style.background = 
            SnakeBodyColor;<BR>&nbsp;AllFoods[0].removeNode(true);<BR>&nbsp;if(AllSnakes.length&gt;1) 
            AllSnakes[0].style.background = 
            SnakeTailColor;<BR>&nbsp;CreateSnake();<BR>&nbsp;CreateFood();<BR>&nbsp;return;<BR>&nbsp;}<BR>if(MainMap[SnakeY][SnakeX] 
            == 'S'){<BR>&nbsp;if(confirm('Game Over，Try again？')) 
            window.location.reload();<BR>&nbsp;else 
            window.close()<BR>&nbsp;}<BR>}</P>
            <P>&nbsp;</P>
            <P>&nbsp;</P>
            <P>function 
            document.onkeydown(){<BR>switch(event.keyCode){<BR>&nbsp;case 
            34:clearInterval(GoTime);oSpeed+=3;GoTime=setInterval(Move,oSpeed);break;//speed 
            up<BR>&nbsp;case 
            33:if(oSpeed-2&gt;0){clearInterval(GoTime);oSpeed-=2;GoTime=setInterval(Move,oSpeed)};break;//speed 
            down<BR>&nbsp;case 192:alert(oSpeed);break;//speed 
            down<BR>&nbsp;case 37:Dir(-1,0);break;//left<BR>&nbsp;case 
            38:Dir(0,-1);break;//up<BR>&nbsp;case 
            39:Dir(1,0);break;//right<BR>&nbsp;case 
            40:Dir(0,1);break;//down<BR>&nbsp;case 
            83:clearInterval(GoTime);GoTime=0;break;<BR>&nbsp;}<BR>}</P>
            <P>&nbsp;</P>
            <P>&nbsp;</P>
            <P>function window.onload(){<BR>var MainMapWidth = 
            2*BorderW+Cells*MapW;<BR>var MainMapHeight = 
            2*BorderW+Rows*MapH;<BR>document.body.innerHTML += "&lt;span 
            id='Base' 
            style='position:absolute;left:"+(document.body.clientWidth-MainMapWidth)/2+";top:"+(document.body.clientHeight-MainMapHeight)/2+";width:"+MainMapWidth+";height:"+MainMapHeight+";border:"+BorderW+" 
            inset #0000CC;'&gt;&lt;/span&gt;&lt;br&gt;&lt;br&gt;&lt;span 
            id='Score'&gt;&lt;/span&gt;&lt;br&gt;&lt;br&gt;&lt;font 
            color=red&gt;Page Down&nbsp; to Speed down&lt;br&gt;Page Up&nbsp; to 
            Speed up&lt;/font&gt;";<BR>SnakeX = 
            parseInt(Math.random()*Cells);<BR>SnakeY = 
            parseInt(Math.random()*Rows);<BR>AllSnakes = 
            Base.all.tags('SPAN');<BR>AllFoods = 
            Base.all.tags('DIV');<BR>window.focus();<BR>CreatMainMap();<BR>CreateSnake();<BR>CreateFood();<BR>}</P>
            <P>&lt;/script&gt;<BR></P><IMG height=1 
            src="月光软件站 - 编程文档 - Script - JavaScript 遊戲  貪吃蛇.files/down_info.htm" 
            width=1 border=0><BR><BR></TD></TR>
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