编写的贪吃蛇代码.doc

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1、varfangxiang;fangxiang=4;varsk=newArray(18);sk[0]="5,5";sk[1]="5,4";sk[2]="5,3";varlong=3;varzhanshichunweiba;varshiwu="15,15";varshudu=250;varmovedong=true;varshifouchongzhi=true;functionkeydown(){if(event.keyCode==38){if(fangxiang

2、!=2)fangxiang=1;if(fangxiang==2)fangxiang=2;}if(event.keyCode==40){if(fangxiang!=1)fangxiang=2;if(fangxiang==1)fangxiang=1;}if(event.keyCode==37){if(fangxiang!=4)fangxiang=3;if(fangxiang==4)fangxiang=4;}if(event.keyCode==39){if(fangxiang!=3)fangxiang=4;if(fangxiang==3)fangxiang=3;}}functionkaishi()

3、{if(shifouchongzhi){shifouchongzhi=false;document.getElementById(sk[0]).style.backgroundColor="red";document.getElementById(sk[1]).style.backgroundColor="red";document.getElementById(sk[2]).style.backgroundColor="red";document.getElementById(shiwu).style.backgroundColor="blue";move();}elsealert("你要

4、先重置");}functionchongzhi(){shifouchongzhi=true;shiwu="15,15";shudu=250;fangxiang=4;sk[0]="5,5";sk[1]="5,4";sk[2]="5,3";long=3;varm=document.getElementsByTagName("td");for(varn=0;n<400;n++){m[n].style.backgroundColor="yellow";}movedong=true;}functiondong(){zhanshichunweiba=sk[long-1];for(varm=long-1;

5、m>0;m--){sk[m]=sk[m-1]}vari=sk[0].split(',');if(fangxiang==1){i[0]--;sk[0]=i[0]+','+i[1]}if(fangxiang==2){i[0]++;sk[0]=i[0]+','+i[1]}if(fangxiang==3){i[1]--;sk[0]=i[0]+','+i[1]}if(fangxiang==4){i[1]++;sk[0]=i[0]+','+i[1]}}functionzhenchanshengshiwu(){varx;vary;x=Math.round(Math.random()*19);y=Math.

6、round(Math.random()*19);shiwu=x+','+y;chanshengshiwu();}functionchanshengshiwu(){for(varm=0;m

7、k[long-1]).style.backgroundColor="red";chanshengshiwu();}}functionjieshujiashu(){vari=sk[0].split(',');if(i[0]<0

8、

9、i[0]>19

10、

11、i[1]<0

12、

13、i[1]>19){alert("你死求");movedong=false;}if(long>=6){shudu=200;}if(long>=9){sh