7、打造精彩 2D 游戏：从基础到进阶

打造精彩 2D 游戏：从基础到进阶

1. 创建流星

创建流星组件的概念与创建玩家组件类似，不过流星的初始位置和移动依赖于随机因素。以下是流星的代码：

#region Using Statements
using System;
using System.Collections.Generic;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.Graphics;
#endregion
namespace FirstGame
{
    /// <summary>
    /// This is a game component that implements the rocks the player must avoid.
    /// </summary>
    public class Meteor : Microsoft.Xna.Framework.DrawableGameComponent
    {
        protected Texture2D texture;
        protected Rectangle spriteRectangle;
        protected Vector2 position;
        protected int Yspeed;
        protected int Xspeed;
        protected Random random;
        // Width and