var fruitObj = function()
{
this.alive = [];
this.x = [];
this.y = [];
this.l = [];
this.spd = [];
this.orange = new Image();
this.blue = new Image();
}
fruitObj.prototype.num = 30;
fruitObj.prototype.init = function()
{
for(var i=0;i<this.num;i++)
{
this.alive[i] = false;
this.x[i] = 0;
this.y[i] = 0;
this.spd[i] = Math.random()*0.01+0.005;
}
this.orange.src = "./src/fruit.png";
this.blue.src = "./src/blue.png";
}
fruitObj.prototype.draw = function()
{
for(var i=0; i<this.num; i++)
{
//draw
//find an ane,grow,fly up
if(this.alive)
{
if(this.l[i] <=14)
{
this.l[i] += this.spd[i]*deltaTime;
}
else
{
this.y[i] -=this.spd[i]*7*deltaTime;
}
ctx2.drawImage(this.orange,this.x[i]-this.l[i]*0.5,this.y[i]-this.l[i]*0.5,this.l[i],this.l[i]);
if(this.y[i]<10)
{
this.alive = false;
}
}
}
}
fruitObj.prototype.born = function(i)
{
var aneID=Math.floor(Math.random()*ane.num);
this.x[i]=ane.x[aneID];
this.y[i]=canHeight-ane.len[aneID];
this.l[i] = 0;
this.alive[i]=true;
}
function fruitMonitor(){
var num=0;
for(var i=0;i<fruit.num;i++)
{
if(fruit.alive[i]){num++;}
}
if(num<15)
{
sendFruit();
return;
}
}
function sendFruit(){
for(var i=0;i<fruit.num;i++)
{
if(!fruit.alive[i])
{
fruit.born(i); //判断果实是否出现
return;
}
}
}
双鱼座夜子鱼
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