为什么显示不了果实
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]=true;
this.x[i]=0;
this.y[i]=0;
this.spd[i]=Math.random()*0.01+0.005;
this.born(i);
}
this.orange.src="./src/fruit.png";
this.blue.src="./src/blue.png";
};
fruitObj.prototype.draw=function ()
{
for(var i=0;i<this.num;i++)
{
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]);
}
};
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;
};