我想说什么来着
2018-02-25 11:18
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++) {
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++) {
ctx2.drawImage(this.orange, this.x[i]-this.orange.width*0.5, this.y[i]-this.orange.height*0.5);
}
}
fruitObj.prototype.born = function(){
var aneID = Math.floor(Math.random() * ane.num);
this.x = ane.x[aneID];
this.y = canHeight - ane.len[aneID];
}
fruitObj.prototype.update = function(){
var num = 0;
for (var i = 0; i < this.num; i++) {
if (this.alive[i]) num++;
}
}
当我把this.born(i)注释掉的时候。黄色小球会在左上角出现。不注释的时候就没有小球出现
fruitObj.prototype.born = function(){
var aneID = Math.floor(Math.random() * ane.num);
this.x = ane.x[aneID];
this.y = canHeight - ane.len[aneID];
}
代码写错了,应该是
this.x[i] = ane.x[aneID];
this. y[i] = canHeight - ane.len[aneID];
HTML5小游戏---爱心鱼(上)
92350 学习 · 551 问题
相似问题