果實(shí)不顯示,怎么辦?
var fruitObj=function()
{
?this.alive=[];//bool
?this.x=[];
?this.y=[];
?this.l=[];
?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.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++)
?{
??//draw
??//find an ane,grow,fly up;
??if(this.l[i] <= 14)
??{
???this.l[i] += 0.01*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;
}
2017-06-02
請(qǐng)問(wèn)你解決了嗎?
2016-12-18
在born函數(shù)中 把canHeight改成can1.height 試試