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// JavaScript Document
var c = document.getElementById("dotu");
var cxt = c.getContext("2d");
var img = newImg("./assets/bg_01.jpg");
var fps;
cxt.drawImage(img,0,0,480,800);

var flivverLog = 0;
var flivver1 = newImg("./assets/flivver.png");
var flivver2 = newImg("./assets/flivver2.png");
var flivver3 = newImg("./assets/flivver3.png");

// 用于记录游戏的时间，越到后面越快
var time1 = 0;
var time2 = 80;

// 积分
var jifen = 0;

function getSudu(){
var number = parseInt(Math.random()*10);
if(number < 5 && number > 0){
return number;
}
return 1;
}
// 飞机的对象
function flivverObj(hp,ewidth,eheight,eimg,esudu){
// 随机的X
this.x = parseInt(Math.random()*460+1);
this.y = 0;
// 血量
this.hp = hp;
// 挨打
this.hit = 0;
// 是否死亡
this.over = 0;

this.width = ewidth;
this.height = eheight;
this.img = eimg;
this.sudu = esudu;
}

// 获取飞机
function getFlivver(type){
switch(type){
case 1:
return new flivverObj(100,50,30,flivver1,getSudu());
case 2:
return new flivverObj(500,70,90,flivver2,getSudu());
case 3:
return new flivverObj(1000,110,170,flivver3,getSudu());
}
}
function cartridge(x,y){
this.x = x;
this.y = y;
}

function gameover(){
window.clearTimeout(fps);
//$('#dotu').fadeOut();
$('.content').css('position','relative');
$('.content').append('');
$('#sil').html('你').hide().fadeIn(1000,function(){
$(this).html('你屎').hide().fadeIn(1000,function(){
$(this).html('你屎了
' + jifen + ' 分').hide().fadeIn();
});
});
}

(function(cxt){
var dotu = {nums:0};
// 用于存放小飞机
var flivver = new Array();
var flivverImg = newImg("./assets/flivver.png");
// 自己
var me = {x:240,y:750};
var meImg = newImg('assets/me.png');
// 子弹
var cartridges = new Array();
var cartridgeImg = newImg('./assets/cartridge.png');

var boo1 = newImg('./assets/boo1.png');
var over = newImg('./assets/over.png');
//
dotu.update = function(){

dotu.setTimes();
// 设置背景
dotu.setBg();
// 设置小飞机
dotu.setFlivver();
// 画自己
dotu.setMe();
// 子弹
dotu.cartridge();


cxt.font = "italic 20px 微软雅黑";
cxt.strokeText("积分：" + jifen, 10, 30);

$('#fjs').html(flivver.length);
$('#zds').html(cartridges.length);
$('#scfj').html("1000/" + time2 + " 毫秒");
}

dotu.setTimes = function(){
time1++ ;
// 100 秒 1个档位
if(time1 == 1000){
time1 = 0;
time2 = (time2 == 20) ? 20 : time2 - 20;
}

}


/**
* 设置移动的背景
*/
dotu.setBg = function(){
dotu.nums++;
if(dotu.nums == 800){
dotu.nums = 0;
}
// 画布的背景
cxt.drawImage(img,0,dotu.nums,480,800);
cxt.drawImage(img,0,dotu.nums - 800,480,800);
}

dotu.setFlivver = function(){
// 生成飞机
if(dotu.nums % time2 == 0){
flivverLog++;
if(flivverLog % 6 == 0){
flivver.push(getFlivver(2));
}else if(flivverLog % 13 == 0){
flivver.push(getFlivver(3));
}else{
flivver.push(getFlivver(1));
}

}

for(a in flivver){



flivver[a].y += flivver[a].sudu;
// 如果超出屏幕将该小飞机删除
if(flivver[a].y > 780){
flivver.splice(a, 1);
}
// 将小飞机画到画布上


// 小飞机死亡
if(flivver[a].over > 0){
flivver[a].over --;

if(flivver[a].over > 20){
cxt.drawImage(boo1,flivver[a].x + flivver[a].width/2 - 20 ,flivver[a].y + flivver[a].height / 2 -10,41,39);
}else if(flivver[a].over > 2){
cxt.drawImage(over,flivver[a].x + flivver[a].width/2 - 20 ,flivver[a].y + flivver[a].height / 2 -10,40,43);
}else{
flivver.splice(a, 1);
}



}else{
cxt.drawImage(flivver[a].img,flivver[a].x,flivver[a].y,flivver[a].width,flivver[a].height);
// 判断自己是否死亡
if( me.x > (flivver[a].x - flivver[a].width + 20) && (me.x) <(flivver[a].x + flivver[a].width - 20) && (me.y) < (flivver[a].y + flivver[a].height + 20) && (me.y + 72) > (flivver[a].y - 20)){
gameover();
}

if(flivver[a].hit > 0){
cxt.drawImage(boo1,flivver[a].x + flivver[a].width/2 - 20 ,flivver[a].y + flivver[a].height / 2 -10,41,39);
//cxt.drawImage(boo1,flivver[a].x + 5 ,flivver[a].y,41,39);
flivver[a].hit--;
}
}

}
}

// 更新自己的距离
dotu.setMe = function(){
cxt.drawImage(meImg,me.x,me.y,64,72);
}

// 更新子弹方法
dotu.cartridge = function(){
if(dotu.nums % 10 == 0){
cartridges.push(new cartridge(me.x + 30,me.y));
}

for(i in cartridges){
// 飞到顶部就将OBJ删除掉
if(cartridges[i].y < 0){
cartridges.splice(i, 1);
continue;
}


cartridges[i].y -= 20;
// 将小飞机画到画布上
cxt.drawImage(cartridgeImg,cartridges[i].x,cartridges[i].y,7,17);

// 子弹碰到飞机的情况
for(j in flivver){
if(flivver[j].over > 0){
continue;
}
if(cartridges[i].x > flivver[j].x && cartridges[i].x < flivver[j].x+ flivver[j].width && cartridges[i].y > flivver[j].y && cartridges[i].y -flivver[j].height < flivver[j].y){

flivver[j].hit = 10;
$('#isdz').html('打中了编号' + j);

if(flivver[j].hp > 1){
flivver[j].hp -= 80;
}else{
flivver[j].over = 40;
jifen += 50000;
}
// 子弹消失
cartridges.splice(i, 1);
break;
}
}
}
}

// 绑定鼠标事件
c.addEventListener('mousemove', function onMouseMove(evt) {
me.x = evt.layerX - $('#dotu').offset().left - 32;
me.y = evt.layerY - 36 ;
$('#sbX').html(me.x);
$('#sbY').html(me.y);
});

fps = setInterval(dotu.update, 1000/100);
}(cxt))


function newImg(src){
var obj = new Image();
obj.src = src;
return obj;
}

//setInterval(h.update, 1000/65);

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