果实不显示
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;
}
else
{
this.y[i] -= 0.07 * 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;
}
fruitObj.prototype.update = function()
{
var num = 0;
for(var i = 0; i < this.num; i++)
{
if(this.alive[i]) num++;
}
}