游戏人生Silverlight(3) 打苍蝇[Silverlight 2.0(c#)]

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游戏人生Silverlight(3) - 打苍蝇[Silverlight 2.0(c#)]

作者：webabcd


介绍
使用 Silverlight 2.0(c#) 开发一个打苍蝇的游戏


玩法
用鼠标控制瞄准镜的移动，鼠标左键开火


在线DEMO



思路
1、苍蝇的移动轨迹用一个简单的公式计算，即正弦波。正弦波的公式：y = A * sin(ωx ＋ φ)
2、苍蝇控件使用MVP(Model - View - Presenter)模式开发，其目的只是为了说明如何在Silverlight中应用MVP模式


关键代码
1、苍蝇控件的Model
IFlyModel.cs

using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

namespace YYFly.Model
{
    public interface IFlyModel
    {
        /**//// <summary>
        /// 让一只苍蝇开始飞
        /// </summary>
        void Start();
        /**//// <summary>
        /// 让一只苍蝇停止飞
        /// </summary>
        void Stop();
        /**//// <summary>
        /// 计分方法
        /// </summary>
        void Score();

        /**//// <summary>
        /// 苍蝇改变位置所触发的事件
        /// </summary>
        event EventHandler<FlyEventArgs> FlyChanging;
    }
}

FlyModel.cs

using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Windows.Threading;

namespace YYFly.Model
{
    public class FlyModel : IFlyModel
    {
        private DispatcherTimer timer; // 改变苍蝇位置的计时器
        private SineWave sineWave; // 苍蝇的运动轨迹（正弦波）的参数
        private FlyEventArgs evt; // 苍蝇的位置参数
        private Random random; 
        private double minX = -100, minY = 40, maxY = 300, minZ = 0.1, maxZ = 0.5;

        private static readonly object objLock = new object();

        public FlyModel()
        {
            timer = new DispatcherTimer();
            timer.Tick += new EventHandler(timer_Tick);
            timer.Interval = new TimeSpan(0, 0, 0, 0, 33);
        }

        void InitData()
        {
            random = new Random();

            sineWave = new SineWave
            {
                A = random.Next(40, 60),
                OffsetY = random.Next((int)minY, (int)maxY),
                Omega = 1d / random.Next(20, 50),
                Phi = random.Next((int)minX * 2, (int)minX),
            };

            evt = new FlyEventArgs()
            {
                X = minX,
                Z = (minZ + maxZ) / 2,
                Z_Out = Convert.ToBoolean(random.Next(0, 2))
            };
        }

        void timer_Tick(object sender, EventArgs e)
        {
            evt.X += Singleton<Scorer>.Instance.Level * 1.5;
            evt.Y = sineWave.OffsetY + sineWave.A * Math.Sin(sineWave.Omega * evt.X + sineWave.Phi);

            if (evt.Z_Out)
            {
                if (evt.Z < maxZ)
                    evt.Z += random.Next(0, 3) / 200d;
                else
                    evt.Z_Out = false;
            }
            else
            {
                if (evt.Z > minZ)
                    evt.Z -= random.Next(0, 3) / 200d;
                else
                    evt.Z_Out = true;
            }

            OnFlyChanging(evt);
        }

        public void Start()
        {
            InitData();
            timer.Start();
        }

        public void Stop()
        {
            timer.Stop();
        }

        public void Score()
        {
            try
            {
                lock (objLock)
                {
                    Singleton<Scorer>.Instance.Score += 1;
                    Singleton<Scorer>.Instance.Level = (int)Singleton<Scorer>.Instance.Score / 10 + 1;
                }
            }
            finally {}
        }

        public event EventHandler<FlyEventArgs> FlyChanging;
        protected virtual void OnFlyChanging(FlyEventArgs e)
        {
            EventHandler<FlyEventArgs> handler = FlyChanging;
            if (handler != null)
                handler(this, e);
        }
    }
}

2、苍蝇控件的View
IFlyView.cs

using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

namespace YYFly.View
{
    public interface IFlyView
    {
        /**//// <summary>
        /// 更新苍蝇的位置
        /// </summary>
        /// <param name="x">X 轴坐标</param>
        /// <param name="y">Y 轴坐标</param>
        /// <param name="z">Z 轴方向上的缩放比例</param>
        void Update(double x, double y, double z);

        /**//// <summary>
        /// 苍蝇开始飞的事件处理器
        /// </summary>
        event EventHandler Start;
        /**//// <summary>
        /// 苍蝇停止飞的事件处理器
        /// </summary>
        event EventHandler Stop;
        /**//// <summary>
        /// 打死苍蝇后的计分事件
        /// </summary>
        event EventHandler Score;
    }
}

Fly.xaml.cs

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

namespace YYFly.View
{
    public partial class Fly : UserControl, IFlyView
    {
        public Fly()
        {
            InitializeComponent();

            this.Loaded += new RoutedEventHandler(Fly_Loaded);
        }

        void Fly_Loaded(object sender, RoutedEventArgs e)
        {
            
        }

        /**//// <summary>
        /// 更新苍蝇的位置
        /// </summary>
        /// <param name="x">X 轴坐标</param>
        /// <param name="y">Y 轴坐标</param>
        /// <param name="z">Z 轴方向上的缩放比例</param>
        public void Update(double x, double y, double z)
        {
            fly.SetValue(Canvas.LeftProperty, x);
            fly.SetValue(Canvas.TopProperty, y);
            st.ScaleX = st.ScaleY = z;
        }

        /**//// <summary>
        /// 打到苍蝇后
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void fly_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            if (aniWing.GetCurrentState() != ClockState.Stopped)
            {
                aniFlyDisappear.Begin();

                OnScore();
            }
        }

        /**//// <summary>
        /// 苍蝇消失的动画结束后
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void aniFlyDisappear_Completed(object sender, EventArgs e)
        {
            OnStop();
        }

        /**//// <summary>
        /// 初始化苍蝇的位置
        /// </summary>
        public void InitPosition()
        {
            fly.SetValue(Canvas.LeftProperty, -300d);
        }

        public event EventHandler Start;
        public void OnStart()
        {
            InitPosition();

            aniFlyDisappear.Stop();

            if (Start != null)
                Start(this, EventArgs.Empty);
        }

        public event EventHandler Stop;
        public void OnStop()
        {
            InitPosition();

            if (Stop != null)
                Stop(this, EventArgs.Empty);
        }

        public event EventHandler Score;
        public void OnScore()
        {
            if (Score != null)
                Score(this, EventArgs.Empty);
        }
    }
}

3、苍蝇控件的Presenter
FlyPresenter.cs

using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

using YYFly.Model;
using YYFly.View;

namespace YYFly.Presenter
{
    /**//// <summary>
    /// Model - View - Presenter 模式中的 Presenter
    /// </summary>
    public class FlyPresenter
    {
        public FlyPresenter(IFlyView flyView, IFlyModel flyModel)
        {
            FlyView = flyView;
            FlyModel = flyModel;

            FlyView.Start += new EventHandler(FlyView_Start);
            FlyView.Stop += new EventHandler(FlyView_Stop);
            flyView.Score += new EventHandler(flyView_Score);

            FlyModel.FlyChanging += new EventHandler<FlyEventArgs>(FlyModel_FlyChanging);
        }

        void FlyView_Start(object sender, EventArgs e)
        {
            FlyModel.Start();
        }

        void FlyView_Stop(object sender, EventArgs e)
        {
            FlyModel.Stop();
        }

        void flyView_Score(object sender, EventArgs e)
        {
            FlyModel.Score();
        }

        void FlyModel_FlyChanging(object sender, FlyEventArgs e)
        {
            FlyView.Update(e.X, e.Y, e.Z);
        }

        public IFlyView FlyView { get; set; }
        public IFlyModel FlyModel { get; set; }
    }
}

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