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<!DOCTYPE html> <html> <head> <title>贪吃蛇</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <style type="text/css"> .backDiv { text-align: center; position:absolute; top:20px; left:300px; width:820px; height:550px; } .display { position:absolute; top:0px; left:685px; width:180px; height:510px; border: 5px solid black; background-color: #ccffff; } #gamePanel table { border-collapse: collapse;/*合并单元格边框*/ border: 5px solid black; background-color: #f0f0f0; } #gamePanel td { width:15px; height:15px; } #scoreDiv { position: absolute; top: 20px; left:20px; text-align: left; font-size: 20px; font-weight: bold; } #prompt { position: absolute; top: 180px; left: 20px; text-align: left; font-weight: bold; } #operator { position: absolute; top:550px; left:100px; } #result { position: absolute; top:200px; left:220px; background-color: #00ffff; font-size: 20px; font-weight: bold; text-align: left; padding: 20px; } </style> <script> var snake = [];// 蛇数组 var barrers = [];// 障碍物数组 var game = {sizeX:"30",sizeY:"40",record:"0"}; var appearTime = disappearTime = 0;// 超级食物出现 var superFoodX = superFoodY = null; var color = 0;// 食物颜色 function init(){ clearTimeout(game.time); snake = []; barrers = []; game.x = 0;game.y = 1; game.dir = null; game.direction = "right"; game.rate = null; game.lengths = 2;// 蛇的长度 game.score = 0; $("scoreDiv").innerHTML = "得分："+game.score+"<br/><br/>长度："+ game.lengths+"<br/><br/>"+"最高分："+game.record; $("pass").disabled = false; $("rate").disabled = false; $("start").disabled = false; bord();// 设置界面 barrer();// 设置障碍物 $("result").style.visibility = "hidden"; snake.push("tb_" + game.x + "_" + (game.y-1)); snake.push("tb_" + game.x + "_" + game.y);// 蛇头 } function $(id){ return document.getElementById(id); } // 表格 function bord(){ var panel = [];// 游戏面板 var proPanel = [];// 提示面板 panel.push("<table>"); for(var i=0; i<game.sizeX; i++){ panel.push("<tr>"); for(var j=0; j<game.sizeY; j++){ panel.push('<td id="tb_' + i + "_" + j + '" > </td>'); } panel.push("</tr>"); } panel.push("</table>"); $("gamePanel").innerHTML = panel.join(""); proPanel.push("<table>"); proPanel.push('<tr>'+'<td width="20px" height="20px" bgcolor="#ff3300"></td>' + '<td> 得分+10</td>'+'</tr>'); proPanel.push('<tr>'+'<td width="20px" height="20px" bgcolor="#33cc33"></td>' + '<td> 得分+30</td>'+'</tr>'); proPanel.push('<tr>'+'<td width="20px" height="20px" bgcolor="#99ff66"></td>' + '<td> 得分+50</td>'+'</tr>'); proPanel.push('<tr>'+'<td width="20px" height="20px" bgcolor="#ffff00"></td>' + '<td> 得分+100</td>'+'</tr>'); proPanel.push('<tr>'+'<td width="20px" height="20px" bgcolor="#006600"></td>' + '<td> 得分-30</td>'+'</tr>'); proPanel.push('<tr>'+'<td width="20px" height="20px" bgcolor="#000000"></td>' + '<td> 得分-50</td>'); proPanel.push("</table>"); $("prompt").innerHTML = proPanel.join(""); } // 关卡障碍物设置 function barrer() { var passValue = $("pass").value; for(var i=0; i<barrers.length; i++) { $(barrers[i]).style.backgroundColor = ""; } barrers = []; if(passValue == 2) { for(var i=8; i<game.sizeX-8; i++) { barrers.push("tb_" + i + "_" + 10); barrers.push("tb_" + i + "_" + (game.sizeY-10)); } } if(passValue == 3) { for(var i=8; i<game.sizeY-8; i++) { barrers.push("tb_" + Math.floor(game.sizeX/2) + "_" + i); } for(var i=6; i<game.sizeX-6; i++) { barrers.push("tb_" + i + "_" + Math.floor(game.sizeY/2)); } } if(passValue == 4) { for(var i=12; i<game.sizeY-11; i++) { barrers.push("tb_" + Math.floor(game.sizeX/2) + "_" + i); } for(var j=6; j<game.sizeX-6; j++) { barrers.push("tb_" + j + "_" + Math.floor(game.sizeY/2+1)); } for(var i=6; i<game.sizeX-6; i++) { if(i < game.sizeX/2) {barrers.push("tb_"+i+"_"+12);} else{barrers.push("tb_"+i+"_"+(game.sizeY-11));} } for(var j=12; j<game.sizeY-11; j++) { if(j <= game.sizeY/2) {barrers.push("tb_"+(game.sizeX-7)+"_"+j);} else {barrers.push("tb_"+6+"_"+(j+1));} } } if(passValue == 5) { for(var i=0; i<14; i++) { barrers.push("tb_" + 7 + "_" + i); barrers.push("tb_" + (game.sizeX-8) + "_" + (game.sizeY-i-1)); } for(var i=15; i<25; i++) { if(i < 18 || i > 21){ barrers.push("tb_"+10 +"_"+i); barrers.push("tb_"+(game.sizeX-11)+"_"+i); } } for(var i=0; i<9; i++) { barrers.push("tb_" + i + "_" + (game.sizeY-13)); barrers.push("tb_" + (game.sizeX-i-1) + "_" + 12); } for(var i=11; i<19; i++) { if(i < 13 || i > 16){ barrers.push("tb_"+i+"_"+15); barrers.push("tb_"+i+"_"+(game.sizeY-16)); } } } // 设置障碍物颜色 for(var i=0; i<barrers.length; i++) { $(barrers[i]).style.backgroundColor = "#660033"; } } // 开始游戏 function startGame() { food(); game.start = true; $("pass").disabled = true; $("rate").disabled = true; $("start").disabled = true; game.rate = $("rate").value; $(snake[0]).style.backgroundColor = "#0066ff"; $(snake[1]).style.backgroundColor = "blue"; game.time = setTimeout(function(){ snakeMove(); },game.rate); superFood(); } // 蛇移动 速度，方向 function snakeMove() { if(game.direction == "right") {game.y += 1; }// 右移 if(game.direction == "left") {game.y -= 1; }// 左移 if(game.direction == "up") {game.x -= 1; }// 上移 if(game.direction == "down") {game.x += 1; }// 下移 // 判断游戏是否结束 if(result() == true) { clearTimeout(game.time); clearTimeout(appearTime); clearTimeout(disappearTime); game.start = false; var res = "游戏结束!<br/>"; if(game.score > game.record){ res += "恭喜你破纪录啦！<br/>"; $("scoreDiv").innerHTML = "得分：" + game.score + "<br/><br/>最高分：" + game.record; } res += "您的得分为：" + game.score + "<br/>长度:"+game.lengths; $("result").style.visibility = "visible"; $("result").innerHTML = res; return; } if(game.x==game.fx && game.y==game.fy) {eat(1);} if(game.x==superFoodX && game.y==superFoodY) {eat(2);} move(); game.time = setTimeout(function() { snakeMove(game.rate,game.direction); },game.rate); } function move() { $(snake[0]).style.backgroundColor = ""; // 保留蛇当前的位置 for(var i=1; i<snake.length; i++) { snake[i-1] = snake[i]; } snake[snake.length-1] = "tb_" + game.x + "_" + game.y;// 蛇头位置 for(var i=0; i<snake.length-1; i++) { $(snake[i]).style.backgroundColor = "#0066ff"; } $(snake[i]).style.backgroundColor = "blue"; } // 食物 位置随机且不能与蛇位置重复 function food() { game.fx = Math.floor(Math.random(game.sizeX)*game.sizeX); game.fy = Math.floor(Math.random(game.sizeY)*game.sizeY); if($("tb_" + game.fx + "_" + game.fy).style.backgroundColor != "") {food(); } else {$("tb_" + game.fx + "_" + game.fy).style.backgroundColor = "#ff3300"; } } // 超级食物出现 function superFood() { appearTime = setTimeout(function(){ var n = Math.floor(Math.random(10)*10); superFoodX = Math.floor(Math.random(game.sizeX)*game.sizeX); superFoodY = Math.floor(Math.random(game.sizeY)*game.sizeY); if($("tb_" + superFoodX + "_" + superFoodY).style.backgroundColor != "") {superFood(); } else{ if(("tb_" + superFoodX + "_" + superFoodY) == ("tb_" + game.fx + "_" + game.fy)){superFood(); return ;} if(n < 3){$("tb_" + superFoodX + "_" + superFoodY).style.backgroundColor = "#33cc33"; color = 0;} else if(3 <= n && n < 5){$("tb_" + superFoodX + "_" + superFoodY).style.backgroundColor = "#006600"; color = 1;} else if(5 <= n && n < 7){$("tb_" + superFoodX + "_" + superFoodY).style.backgroundColor = "#99ff66"; color = 2;} else if(7 <= n && n < 9){$("tb_" + superFoodX + "_" + superFoodY).style.backgroundColor = "#000000"; color = 3;} else {$("tb_" + superFoodX + "_" + superFoodY).style.backgroundColor = "#ffff00"; color = 4;} clearTimeout(disappearTime); superFood(); // 必定时间后超级食物消失 disappearTime = setTimeout(function(){ $("tb_" + superFoodX + "_" + superFoodY).style.backgroundColor = ""; superFoodX = superFoodY = null; },game.rate*120-game.rate*50); } },game.rate*120); } // 蛇吃食物 function eat(ef) { // 吃普通食物 if(ef == 1) {snake.push("tb_" + game.fx + "_" + game.fy); game.score += 10; food();} // 吃超级食物 if(ef == 2) { if(color == 0) {game.score += 30;} else if(color == 1) {game.score -= 30;} else if(color == 2) {game.score += 50;} else if(color == 3) {game.score -= 50;} else {game.score += 100;} snake.push("tb_" + superFoodX + "_" + superFoodY); if(game.score < 0) {game.score = 0;} clearTimeout(disappearTime); } game.lengths += 1; $("scoreDiv").innerHTML = "得分："+game.score+"<br/><br/>长度："+game.lengths+"<br/><br/>最高分："+game.record; } // 游戏结束 function result() { var next = "tb_" + game.x + "_" + game.y; if(game.x<0 || game.x>=game.sizeX || game.y<0 || game.y>=game.sizeY) {return true;} for(var i=0; i<snake.length; i++) {if(next == snake[i]) {return true;}} for(var i=0; i<barrers.length; i++) {if(next == barrers[i]) {return true;}} return false; } // 键盘控制 function control(v) { var evt = v; game.dir = game.direction; if(37 <= evt.keyCode && evt.keyCode <= 40 && game.start){ if(evt.keyCode == 37){game.dir=="right" ? game.direction = "right":game.direction = "left";}// 左 if(evt.keyCode == 38){game.dir=="down" ? game.direction = "down" : game.direction = "up";}// 上 if(evt.keyCode == 39){game.dir=="left" ? game.direction = "left" : game.direction = "right";}// 右 if(evt.keyCode == 40){game.dir=="up" ? game.direction = "up" : game.direction = "down";}// 下 if(game.dir != game.direction){clearTimeout(game.time); snakeMove(); } } } </script> </head> <body onload="init();" onkeyup="control(event);" > <div class="backDiv"> <div class="display"> <div id="scoreDiv">分数：0</div><br/> <div id="prompt"></div> </div> <div id="gamePanel" ></div><br/> <div id="operator"> 选择关卡：<select id="pass" onchange="barrer();"> <option value="1">关卡1</option> <option value="2">关卡2</option> <option value="3">关卡3</option> <option value="4">关卡4</option> <option value="5">关卡5</option> </select>   速度：<select id="rate"> <option value="500">慢</option> <option value="250">中</option> <option value="100">快</option> </select>   <input type="button" id="start" value="开始" onclick="startGame();" />   <input type="button" id="resets" value="重玩" onclick="init();" /> </div> <div id="result"></div> </div> <div style="text-align:center;"> <p><a href="http://www.mycodes.net/" target="_blank">源码之家</a></p> </div> </body> </html>
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