贪吃蛇javascript版本.doc

Java编码规范功能完整，无bug代码如下：无标题文档var onStart = true;var allwh = 600;var snakewh = 20;var isSnake = true;/用于初始化蛇var isFood = true; /用于记录是否产生食物var avoidBack = true;/用于防止回走var firstDir = ;/初始方向var dir = ;/按键方向var changW;var changH;var snakeArray = new Array;/蛇的ID (内涵坐标)var foodCount = 0;var gameOver = false;var maxScore = 0;var nowScore =0;/var speed = 0;var XXYY = 0,0;var Time = 400;function loopbegin()/alert(Time = +Time);if(onStart)t = setInterval(begin(),150);onStart = false;function begin()removeSnakeFood();initSnake();/初始化蛇createFood();/初始化食物meetSnakeFood();/蛇与食物相遇moveSnake();checkSnakeOut();checkSnakeEatSelf();/getMessage();function getMessage()var changS = 2;var L = snakeArray.length;if(L5)changS = 2;else if(L10)changS = 4;else if(L15)changS = 6;else if(L20)changS = 8;else changS = 10;nowScore += changS;if(maxScorenowScore)maxScore = nowScore;if(L=20)Time = Time - L;if(Time=80)Time = 80;speed = parseInt(1000/Time*10)/10.0;stopSnake();loopbegin();NowScore.innerHTML=当前得分：+nowScore;MaxScore.innerHTML=最高分：+maxScore;Spend.innerHTML=当前速度每秒走 +speed+格;function removeSnakeFood()if(gameOver)isSnake = true;/用于初始化蛇isFood = true;/清除食物var all = document.getElementById(all);for(var i=0; i=foodCount; i+)var food = document.getElementById(food+i);all.removeChild(food);snakeArray.length = 0;gameOver = false;foodCount = 0;/Time = 500;/nowScore = 0;function initSnake()if(isSnake) var snakeT = document.getElementById(snakeT);var snakeT_x = parseInt(Math.random()*(allwh/snakewh-8)+4)*snakewh;var snakeT_y = parseInt(Math.random()*(allwh/snakewh-8)+4)*snakewh;snakeT.style.left = snakeT_x+px;snakeT.style.top = snakeT_y+px;snakeT.style.backgroundColor=#000000;snakeT.style.borderColor = #000000;snakeArray.push(snakeT);/蛇头进站var keyCode =parseInt(Math.random()*4)+37;if(keyCode=37)firstDir=left;changW = -snakewh;changH = 0;else if(keyCode=38)firstDir=top;changW = 0;changH = -snakewh;else if(keyCode=39)firstDir=right;changW = snakewh;changH = 0;else if(keyCode=40)firstDir=bottom;changW = 0;changH = snakewh;isSnake = false;function createFood()var all = document.getElementById(all);var food_x;var food_y;if(isFood)var food = document.createElement(div);var strW = ;var strH = ;for(var i=0; isnakeArray.length; i+)var snakeNode_x = snakeArrayi.style.left;var snakeNode_y = snakeArrayi.style.top;snakeNode_x = snakeNode_x.substring(0,snakeNode_x.indexOf(px);snakeNode_y = snakeNode_y.substring(0,snakeNode_y.indexOf(px);strWi = snakeNode_x;strHi = snakeNode_y;var flag;doflag = false;food_x = parseInt(Math.random()*(allwh/snakewh-0)+0)*snakewh;food_y = parseInt(Math.random()*(allwh/snakewh-0)+0)*snakewh;for(var i=0; i0; i-)/移动蛇的数组 后移一各snakeArrayi = snakeArrayi-1;snakeArray0 = temp;snake01_x = parseInt(snake01_x)+changW;snake01_y = parseInt(snake01_y)+changH;XXYY0 = snakeArray0.style.left;XXYY1 = snakeArray0.style.top;snakeArray0.style.left =snake01_x+px;snakeArray0.style.top =snake01_y+px;snakeArray0.style.backgroundColor = #000000;snakeArray0.style.borderColor = #000000;avoidBack = true;/用于防止误走function checkSnakeEatSelf()for(var i=1; isnakeArray.length; i+)if(snakeArray0.style.top=snakeArrayi.style.top&snakeArray0.style.left=snakeArrayi.style.left)GameOver();function checkSnakeOut()var snake01_X = snakeArray0.style.left;var snake01_Y = snakeArray0.style.top;snake01_X = snake01_X.substring(0,snake01_X.indexOf(px);snake01_Y = snake01_Y.substring(0,snake01_Y.indexOf(px);if(snake01_X580|snake01_Y580)snakeArray0.style.left = XXYY0;snakeArray0.style.top = XXYY1;snakeArray0.style.backgroundColor=#00FF00; snakeArray0.style.borderColor=#00FF00;if(snakeArray.length1)snakeArray1.style.backgroundColor=#FF0000; snakeArray1.style.borderColor=#FF0000;GameOver();function GameOver()alert(OVER! GameOver();clearInterval(t);gameOver = true;avoidBack = true;/用于防止回走onStart = true;/foodCount = 0;Time = 400;nowScore = 0;NowScore.innerHTML=当前得分：+0;/MaxScore.innerHTML=最高分：+maxScore;Spend.innerHTML=当前速度每秒走 +0+格;function startKeyEvent()/alert(调用startKeyEvent();document.onkeydown = startKey;/函数function startKey()var keyCode = event.keyCode;/var dir;switch(keyCode)case 37:dir = left;break;case 38:dir = top;break;case 39:dir = right;break;case 40:dir = bottom;break;if(avoidBack=true)if(firstDir=left&dir!=right)if(dir=top)changW = 0;changH = -snakewh;else if(dir=bottom)changW = 0;changH = snakewh;firstDir = dir;else if(firstDir=right&dir!=left)if(dir=top)changW = 0;changH = -snakewh;else if(dir=bottom)changW = 0;changH = snakewh;firstDir = dir;else if(firstDir=top&dir!=bottom)if(dir=left)changW = -snakewh;changH = 0; else if(dir=right)changW = snakewh;changH = 0; firstDir = dir;else if(firstDir=bottom&dir!=top)if(dir=left)changW = -snakewh;