1, Environmental preparation

Compiled software: VS2019

Operating system: Windows10

Client requirements:

Write an online game client. The campus intranet IP address of the game server is 10.1.230.74, the port is 3900, and TCP connection is adopted.

1) After the connection is successful, the messages sent by the server can be continuously displayed in the listbox;

2) Enter the data to be sent by the client to the server through textbox or click button;

3) Able to play background music;

4) Change the game background image every 30 seconds.

  2, Project production

① Create engineering and interface design

Open VS2019 to create a new project

After creating the project, first add a control of Windows media player to play music

Click toolbox, right-click general, and select item

Select Windows media player in the COM item, and then OK

After adding the Media Player control, design the following interface:

Control naming:

Main interface: MainView                                        Volume adjustment slider: VolumnBar

Input box: inputView                                        Picture display part: PictureBar

Start game button: Btn_start                               Media player: MediaPlayer

End game button: Btn_exit                                 Send button: Btn_send

Volume display label: lbl_volumn

The MainView requires special settings for multi line display and vertical scrolling of the scroll bar

VolumnBar has a maximum value of 100 and is used for volume adjustment

 

② Connect server

Double click the start game button to automatically generate the click function. Write the following code in the function body

 TcpClient tcpClient;
        NetworkStream stream;
        private void Btn_start_Click(object sender, EventArgs e)
        {
        /*
       * Connect server
       */
            try
            {
                //instantiation 
                tcpClient = new TcpClient();
                //Issue a connection request to the server with the specified IP address
                tcpClient.Connect("10.1.230.74", 3900);
                //Get network transport stream
                stream = tcpClient.GetStream();
                //Accept data and convert to string
                byte[] data = new byte[1024];
                int receive = stream.Read(data, 0, 1024);
                string msg = Encoding.Default.GetString(data, 0, receive);
                //Show
                MainView.AppendText(msg);
            }
            catch
            {
                MainView.AppendText("The server is not started" + Environment.NewLine);
            }
        }

Operation effect

③ Data transmission

Double click the send button to generate the onclick function and write code to send the request

   private void Btn_send_Click(object sender, EventArgs e)
        {
            //Gets the text content in the InputView
            string msg = inputView.Text + "\n";
            //Convert the text content into a bitstream and send it to the server
            byte[] data = new byte[1024];
            data = Encoding.Default.GetBytes(msg);
            stream.Write(data, 0, data.Length);
            //Receive the data stream from the server and convert it into a string
            byte[] data1 = new byte[1024];
            int receive = stream.Read(data1, 0, 1024);
            msg = Encoding.Default.GetString(data1, 0, receive);
            //Clears the contents before the display box
            MainView.Clear();
            //Display data
            MainView.AppendText(msg);
            //Refresh input box
            inputView.Clear();
            //Focus the cursor on the input box
            inputView.Focus();
        }

Operation effect

④ Background music playback

Add the following code to the constructor

  public Form1()
        {
            InitializeComponent();

                //Sets the initial position of the volume regulator
                VolumnBar.Value = 50;
                lbl_volumn.Text = "50";
                MediaPlayer.Hide();

        }

Then at BTN_ Add this code to the click function of start

* Play background music
    ******************/
            //Set volume key value
            VolumnBar.Value = 50;
            lbl_volumn.Text = "50";
            //String store music path
            string s = @"D:\music\Alien Spaceship Atmosphere.mp3";
            //Set to loop
            MediaPlayer.settings.setMode("loop", true);
            //Set the volume of the initial music (range: 0-100)
            MediaPlayer.settings.volume = 50;
            //Set the path to play songs
            MediaPlayer.URL = s;

Where s is the path where mp3 files are stored

Double click the volume adjustment slider to write the code

  private void VolumnBar_Scroll(object sender, EventArgs e)
        {
                //Control volume
                MediaPlayer.settings.volume = VolumnBar.Value;
                //Control volume display
                lbl_volumn.Text = VolumnBar.Value.ToString();

        }

This allows you to adjust the volume by dragging the slider.

⑤ Picture rotation

  Find the Timer control in the toolbox and drag it into the form

Timer settings

Double click Timer to enter the function and write the following code

 private int flag;
        private void timer1_Tick(object sender, EventArgs e)
        {
            flag++;
            string picturePath = @"E:\GamePic\" + flag + ".jpg";
            //Set picture fill
            PictureBar.SizeMode = PictureBoxSizeMode.Zoom;
            PictureBar.Image = Image.FromFile(picturePath);
            if (flag == 5)
            {
                flag = 0;
            }
        }

Where PicturePath is the path to put the picture

Prepare five pictures named 1.2.3.4.5

  The effect is as follows

3, Reference articles

C# write online game client to connect to game server_ ssj925319 blog - CSDN blog