粉色坦克为敌人的坦克,橘色坦克为我方坦克
画布上的点点是子弹,目前还没有实现发子弹消灭敌方坦克并消失
明天会更新并且完善
坦克的组成是由三个矩形中间矩形上面是一个圆形,圆形上是一个直线
根据不同的方向生成不同的子弹:
(1)根据方向----生成不同的子弹对象
(2)再根据子弹坦克炮筒方向,画出子弹
废话不多说 上源码
tankGame2.html
你的浏览器不支持canvas标签
//开始画出我们的tanke
var canvas = document.getElementById('tankMap');
//相当于获得画笔
var ctx = canvas.getContext('2d');
//自定义的标准:
// 0-->向上 1-->向右 2-->向下 3--> 向左
var hero = new Hero(40,40,3,0,heroColor);
drawTank(hero);
//定义一个数组,画出敌人的坦克,画一个向数组添加一个
var enemyTanks = new Array();
//定义一个子弹的数组
var heroBullets = new Array();
//根据方向生成的具体的某个子弹对象
var heroBullet = null;
for(var i=0;i<3;i++){
var enemyTank = new EnemyTank((i+1)*50,0,3,2,enemyColor);
enemyTanks[i] = enemyTank;
drawTank(enemyTanks[i]);
}
//刷新作战区,显示战场上最新的元素()
function flashMap(){
ctx.clearRect(0,0,500,300);
drawTank(hero);
//画出英雄坦克的子弹
drawHeroBullet();
for(var i=0;i<3;i++){
drawTank(enemyTanks[i]);
}
}
function changeDirect(){
//触发事件后,传递参数 event
var keycode = event.keyCode;
switch(keycode){
case 38:
hero.moveUp();
break;
case 39:
hero.moveRight();
break;
case 40:
hero.moveBottom();
break;
case 37:
hero.moveLeft();
break;
case 32:
hero.shotEnemy();
break;
}
flashMap();
}
tankGame.js
//先给坦克定义颜色 var enemyColor = new Array('gray','pink'); var heroColor = new Array('blue','orange'); function Tank(x,y,speed,direct,color){ this.x = x; this.y = y; this.speed = speed; this.direct = direct; this.moveUp = function(){ hero.y -= hero.speed; hero.direct = 0; } this.moveRight = function(){ hero.x += hero.speed; hero.direct = 1; } this.moveBottom = function(){ hero.y += hero.speed; hero.direct = 2; } this.moveLeft = function(){ hero.x -= hero.speed; hero.direct = 3; } } //先定义一个坦克类,包括坦克的坐标,方向,坦克的速度 function Hero(x,y,speed,direct,color){ this.hero = Tank; this.color = color; this.hero(x,y,speed,direct); this.shotEnemy = function(){ //drawHeroBullet(hero); //heroBullet = new HeroBullet(); switch(this.direct){ case 0: //实例化一个子弹对象 heroBullet = new HeroBullet(this.x+10,this.y,this.speed); break; case 1: heroBullet = new HeroBullet(this.x+30,this.y+9,this.speed); break; case 2: heroBullet = new HeroBullet(this.x+9,this.y+30,this.speed); break; case 3: heroBullet = new HeroBullet(this.x,this.y+9,this.speed); break; } heroBullets.push(heroBullet); } } //定义 敌人的坦克 function EnemyTank(x,y,speed,direct,color){ this.enemyTank = Tank; this.color = color; this.enemyTank(x,y,speed,direct); } function HeroBullet(x,y,speed,direct){ this.x = x; this.y = y; this.speed = speed; this.direct = direct; } function drawHeroBullet(){ for(var j=0;j