标签：style blog http java color os io width
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title></title> </head> <body onkeydown="getCommand()"> <canvas id="tankMap" width="400px" height="300px" style="background-color: black"></canvas> <script type="text/javascript"> //得到画布 var canvas1 = document.getElementById("tankMap"); //取得画布画笔对象 var cxt = canvas1.getContext("2d"); //定义一个Hero类 //x表示横坐标，主表示纵坐标 function Hero(x, y, direct, speed) { this.x = x; this.y = y; this.speed = speed; this.direct = direct; //向上 this.moveUp = function () { this.y -= this.speed; } //向右 this.moveRight = function () { this.x += this.speed; } //向下 this.moveDown = function () { this.y += this.speed; } //向左移 this.moveLeft = function () { this.x -= this.speed; } } //我的坦克 w表示向上,d表示向右 s表示向下 a表示向左 var hero = new Hero(140, 140, 0, 10); //先画出坦克 darwTank(hero); //绘制坦克对象 function darwTank(hero) { //画出坦克 cxt.fillStyle = "#DED284"; //画出左面 cxt.fillRect(hero.x, hero.y, 5, 30); //画出右边 cxt.fillRect(hero.x + 15, hero.y, 5, 30); //中间矩形 cxt.fillRect(hero.x + 6, hero.y + 5, 8, 20); //画出坦克的盖子 cxt.fillStyle = "#FFD972"; cxt.arc(hero.x + 10, hero.y + 15, 4, 0, 360, true); cxt.fill(); //车出炮线 cxt.strokeStyle = "#FFD972"; cxt.lineWidth = 1.5; cxt.beginPath(); cxt.moveTo(hero.x + 10, hero.y + 15); cxt.lineTo(hero.x + 10, hero.y); cxt.closePath(); cxt.stroke(); } //接收键盘命令 function getCommand() { var code = event.keyCode; //alert(code); switch (code) { case 87: hero.moveUp(); break; case 68: hero.moveRight(); break; case 83: hero.moveDown(); break; case 65: hero.moveLeft(); break; } cxt.clearRect(0, 0, 400, 300); darwTank(hero); } </script> </body> </html>
HTML坦克大战学习02---坦克动起来,布布扣,bubuko.com
标签：style blog http java color os io width
原文地址：http://www.cnblogs.com/yzenet/p/3866675.html
