track.cs

来自「OOP With Microsoft VB.NET And Csharp Ste」· CS 代码 · 共 155 行

using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Windows.Forms;

namespace TrainGame
{
	/// <summary>
	/// Summary description for Track.
	/// </summary>
	[System.ComponentModel.DefaultEvent("CaughtOnFire")]
	public class Track : System.Windows.Forms.UserControl
	{
		private System.ComponentModel.IContainer components;

		public Track()
		{
			// This call is required by the Windows.Forms Form Designer.
			InitializeComponent();

			// TODO: Add any initialization after the InitForm call

		}

		/// <summary> 
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Component Designer generated code
		/// <summary> 
		/// Required method for Designer support - do not modify 
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.components = new System.ComponentModel.Container();
			this.timer1 = new System.Windows.Forms.Timer(this.components);
			// 
			// timer1
			// 
			this.timer1.Enabled = true;
			this.timer1.Tick += new System.EventHandler(this.timer1_Tick);
			// 
			// Track
			// 
			this.Name = "Track";
			this.Load += new System.EventHandler(this.Track_Load);

		}
		#endregion

		private int m_fireFrequency =1;
		public int FireFrequency 
		{
			get {return m_fireFrequency;}
			set 
			{
				if (value >= 1)
				{
					m_fireFrequency = value;
					timer1.Interval = m_fireFrequency *1000;
				}
			}
		}

		private const int TrackHeight = 15;				//Must be divisible by 5
		private const int BarWidth = TrackHeight / 5;
		private System.Windows.Forms.Timer timer1;	//Equal to rail width
		private const int BarSpacing = BarWidth * 2;

		private void Track_Load(object sender, System.EventArgs e)
		{
			this.Height =15;
		}

		protected override void OnSizeChanged(System.EventArgs e)
		{
			this.Height = TrackHeight;
			//width must be divisible by BarSpacing
			int nBars = this.Width / BarSpacing;
			this.Width = nBars *BarSpacing;
		}

		protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
		{
			base.OnPaint(e);
			System.Drawing.Drawing2D.GraphicsPath gp =
				new System.Drawing.Drawing2D.GraphicsPath();
			gp.FillMode = System.Drawing.Drawing2D.FillMode.Winding;
			int height = TrackHeight / 5;
			int nBars =this.Width / BarSpacing;
			for (int bar = 0; bar < nBars; bar++)
			{
				gp.AddRectangle(new System.Drawing.Rectangle(bar * BarSpacing,
					height, BarSpacing, height));
				gp.AddRectangle(new System.Drawing.Rectangle(bar * BarSpacing,
					height * 3, BarSpacing, height));
				gp.AddRectangle(new System.Drawing.Rectangle(bar * BarSpacing,
					0, BarWidth, TrackHeight));
			}
			e.Graphics.FillPath(System.Drawing.Brushes.SaddleBrown,gp);
		}

		private void timer1_Tick(object sender, System.EventArgs e)
		{
			if (CaughtOnFire != null)
			{
				System.Random randomNumber = new System.Random();
				CaughtOnFire(this, new CaughtOnFireEventArgs(
					randomNumber.Next(0, this.Width)));
			}
		}

		public delegate void CaughtOnFireEventHandler(object sender,
			CaughtOnFireEventArgs e);
		public event CaughtOnFireEventHandler CaughtOnFire;


		

	}

	public class CaughtOnFireEventArgs : System.EventArgs 
	{
		private int m_location =0;
		public int Location 
		{
			get 
			{
				return m_location;
			}
		}

		public CaughtOnFireEventArgs(int location)
		{
			m_location =location;
		}


	}
}