這是今天的傑作  乒乓球  按空白鍵開始

這個比較簡單  可是乒乓球跑起來卡卡的

目前請教高手中  順便附上程式碼

如果有人知道怎麼改  歡迎至訪客簿留言

按此下載

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace WindowsFormsApplication2
{
    public partial class Form1 : Form
    {
        Point Ball_pos = new Point();
        int Ball_Width = 30;
        Point Ball_Speed = new Point();
        Pen myPen1 = new Pen(Color.Black, 5);
        Pen myPen2 = new Pen(Color.Brown, 5);
        int Margin_Left = 40;
        int Margin_Right = 120;
        int Bar_Len = 50;
        int Y_Right = 0;
        int Y_Left = 0;
        Random rd = new Random();

        public Form1()
        {
            InitializeComponent();
            InitializeComponent();
            Ball_pos.X = this.ClientSize.Width / 2;
            Ball_pos.Y = this.ClientSize.Height / 2;
            Ball_Speed = new Point(rd.Next(5) + 5, rd.Next(8) + 4);
            Y_Left = this.ClientSize.Height / 2;
            Y_Right = this.ClientSize.Height / 2;
        }

        private void Form1_Load(object sender, EventArgs e)
        {
           
        }

        private void Form1_Paint(object sender, PaintEventArgs e)
        {
           
            e.Graphics.FillEllipse(Brushes.Blue,
                Ball_pos.X - Ball_Width / 2,
                Ball_pos.Y - Ball_Width / 2,
                Ball_Width, Ball_Width);
            e.Graphics.DrawEllipse(Pens.Black,
                Ball_pos.X - Ball_Width / 2,
                Ball_pos.Y - Ball_Width / 2,
                Ball_Width, Ball_Width);

           
            e.Graphics.DrawLine(myPen1,
                0 + Margin_Left, Y_Left - Bar_Len,
                0 + Margin_Left, Y_Left + Bar_Len);

           
            e.Graphics.DrawLine(myPen2,
                this.ClientSize.Width - Margin_Right, Y_Right - Bar_Len,
                this.ClientSize.Width - Margin_Right, Y_Right + Bar_Len);
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            Ball_pos.Y += Ball_Speed.Y;

           
            if (Ball_pos.Y >= this.ClientSize.Height - Ball_Width / 2)
            {
                Ball_pos.Y = this.ClientSize.Height - Ball_Width / 2;
                Ball_Speed.Y = -Ball_Speed.Y;
            }
            else if (Ball_pos.Y < Ball_Width / 2)
            {
                Ball_pos.Y = Ball_Width / 2;
                Ball_Speed.Y = -Ball_Speed.Y;
            }

            Ball_pos.X += Ball_Speed.X;
            if (Ball_pos.X < 200)
            {
                if (Ball_pos.Y > Y_Left)
                    Y_Left += 10 + rd.Next(11) - 5;
                else if (Ball_pos.Y < Y_Left)
                    Y_Left -= 10 + rd.Next(11) - 5;
            }

           
            if (Ball_pos.X >= this.ClientSize.Width - Ball_Width / 2 - Margin_Right)
            {
               
                if (Ball_pos.Y <= Y_Right + Bar_Len + Ball_Width &&
                    Ball_pos.Y >= Y_Right - Bar_Len - Ball_Width)
                {
                    Ball_pos.X = this.ClientSize.Width - Ball_Width / 2 - Margin_Right;
                    Ball_Speed.X = -Ball_Speed.X;
                }
                else
                {
                    this.Invalidate();
                    timer1.Enabled = false;
                    MessageBox.Show("你輸了!");
                }
            }
           
            else if (Ball_pos.X < Ball_Width / 2 + Margin_Left)
            {
                if (Ball_pos.Y <= Y_Left + Bar_Len + Ball_Width &&
                    Ball_pos.Y >= Y_Left - Bar_Len - Ball_Width)
                {
                    Ball_pos.X = Ball_Width / 2 + Margin_Left;
                    Ball_Speed.X = -Ball_Speed.X;
                }
                else
                {
                    this.Invalidate();
                    timer1.Enabled = false;
                    MessageBox.Show("你贏了!");
                }
            }

            this.Invalidate();
        }

        private void Form1_MouseMove(object sender, MouseEventArgs e)
        {
            Y_Right = e.Y;
        }

        private void Form1_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyData == Keys.Space)
            {
                Ball_pos.X = this.ClientSize.Width / 2;
                Ball_pos.Y = this.ClientSize.Height / 2;
                Ball_Speed = new Point(rd.Next(5) + 5, rd.Next(8) + 4);
                Y_Left = this.ClientSize.Height / 2;
                Y_Right = this.ClientSize.Height / 2;
                timer1.Enabled = true;
            }
        }
    }
}