果实出不来
var fruitObj = function() {
this.alive = []
this.x = []
this.y = []
this.orange = new Image()
this.blue = new Image()
}
fruitObj.prototype.num = 30
fruitObj.prototype.init = function() {
for(var i = 0; i < this.num; i++) {
// 定义果实生命期为true，说白了就是显示
this.alive[i] = true
this.x[i] = 0
this.y[i] = 0
// 遍历30次，分别得到这30次果实的位置
// this.born(i)
}
this.orange.src = "./src/blue.png"
this.blue.src = "./src/fruit.png"
}
fruitObj.prototype.draw = function() {
for(var i = 0; i < this.num; i++) {
// 绘制果实的图片以及位置
ctx2.drawImage(this.orange, this.x[i] - this.orange.width * 0.5, this.y[i] - this.orange.height * 0.5)
}
}
fruitObj.prototype.born = function(i) {
// ane.num == 50
var aneID = Math.floor(Math.random() * ane.num)
// 使每个果实的横坐标对应每个海葵的横坐标
this.x[i] = ane.x[aneID]
// 使每个果实的纵坐标刚好在每个海葵的上面
this.y[i] = canHeight - ane.len[aneID]
}
