关于最开始出生的果实，大鱼吃不到，之后果实循环后就可以正常吃到果实，是果实初始化是alive都是false原因嘛，但是我试了还是不行。大概是什么问题？
var fruitObj = function()
{
this.alive = [];//bool
this.x = [];
this.y = [];
this.l = [];
this.spd = [];
this.fruitType = [];
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() * 0.017 + 0.003;//0.003-0.02
this.born(i);
this.fruitType[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,grow,fly
if(this.alive[i] = true)
{
if(this.fruitType[i] == "blue")
{
var pic = this.blue;
}
else
{
var pic = this.orange;
}
if(this.l[i] <= 14)//果实尺寸
{
this.l[i] += this.spd[i] * dataTime;
}
else
{
this.y[i] -= this.spd[i] * 7 * dataTime;
}
ctx2.drawImage(pic,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[i] = 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;
var ran = Math.random();
if(ran < 0.2)
{
this.fruitType[i] = "blue";
}
else
{
this.fruitType[i] = "orange";
}
}
fruitObj.prototype.dead = function(i) //被吃 死亡
{
this.alive[i] = false;
}
function fruitMonitor() //检测果实数量
{
var num = 0;
for(var i=0;i<fruit.num;i++)
{
if(fruit.alive[i]) num++;
}
if(num < 15)
{
sendFruit();
return;
}
}
function sendFruit() //果实进入循环
{
for(var i=0;i<fruit.num;i++)
{
if(!fruit.alive[i])
{
fruit.born(i);
return;
}
}
}
