C＃GDI貪吃蛇遊戲

Question

如何使各個方向蛇移動時間可持續無需按按鈕總是

public partial class Form1 : Form 
{ 
    Rectangle rectangle; 
    Size recSize; 
    Point firstPoint; 
    Point[,] grid; 
    Graphics graphics; 
    Point[] snake; 
    Random rng; 
    Pen pen; 
    int width = 0; 
    int height = 0; 

    public Form1() 
    { 
     InitializeComponent(); 

     firstPoint = new Point(0, 0); 
     recSize = new Size(this.ClientSize.Width, this.ClientSize.Height); 
     rectangle = new Rectangle(firstPoint, recSize); 
     graphics = this.CreateGraphics(); 
     width = rectangle.Width; 
     height = rectangle.Height; 
     grid = new Point[width/4, height/4]; 
     snake = new Point[400]; 
     rng = new Random(); 
    } 

    protected override void OnPaint(PaintEventArgs e) 
    { 
     base.OnPaint(e); 
     pen = new Pen(new SolidBrush(Color.Green)); 
     //e.Graphics.DrawRectangle(pen, rectangle); 
     e.Graphics.FillRectangle(new SolidBrush(Color.Green), rectangle); 

    } 

    private void GameButton_Click(object sender, EventArgs e) 
    { 
     for (int i = 0; i < width/4; i++) 
     { 
      for (int j = 0; j < height/4; j++) 
      { 
       grid[i, j] = new Point(); 
       grid[i, j].X = firstPoint.X + (i * 4); 
       grid[i, j].Y = firstPoint.Y + (j * 4); 
       graphics.DrawEllipse(new Pen(new SolidBrush(Color.FromArgb(255, 0,0,0))), new Rectangle(grid[i, j], new Size(2, 2))); 
      } 
     } 

     snake[0] = new Point(); 
     snake[0] = grid[width /4/ 2 , height /4/ 2 ]; 
     graphics.DrawEllipse(new Pen(new SolidBrush(Color.Black)), new Rectangle(snake[0], new Size(4, 4))); 
     graphics.FillEllipse(new SolidBrush(Color.Black), new Rectangle(snake[0], new Size(4, 4))); 

    } 


    private void moveSnake(KeyEventArgs e) 
    { 

      switch (e.KeyData) 
      { 
       case Keys.Up: 

         this.graphics.Clear(Color.Green); 
         snake[0].Y -= 4; 
         graphics.DrawEllipse(new Pen(new SolidBrush(Color.Black)), new Rectangle(snake[0], new Size(4, 4))); 
         graphics.FillEllipse(new SolidBrush(Color.Black), new Rectangle(snake[0], new Size(4, 4))); 
         graphics.Flush(); 
         this.Invalidate(); 
         System.Threading.Thread.Sleep(500); 
         // this.Refresh(); 
         //moveSnake(e); 


         break; 
        case Keys.Down: 
         this.graphics.Clear(Color.Green); 
         snake[0].Y += 4; 

         graphics.DrawEllipse(new Pen(new SolidBrush(Color.Black)), new Rectangle(snake[0], new Size(4, 4))); 
         graphics.FillEllipse(new SolidBrush(Color.Black), new Rectangle(snake[0], new Size(4, 4))); 
         this.Invalidate(); 
         System.Threading.Thread.Sleep(500); 
         //this.Refresh(); 
         break; 
        case Keys.Left: 
         this.graphics.Clear(Color.Green); 
         snake[0].X -= 4; 

         graphics.DrawEllipse(new Pen(new SolidBrush(Color.Black)), new Rectangle(snake[0], new Size(4, 4))); 
         graphics.FillEllipse(new SolidBrush(Color.Black), new Rectangle(snake[0], new Size(4, 4))); 
         this.Invalidate(); 
         System.Threading.Thread.Sleep(500); 
         //this.Refresh(); 
         break; 
        case Keys.Right: 
         this.graphics.Clear(Color.Green); 
         snake[0].X += 4; 

         graphics.DrawEllipse(new Pen(new SolidBrush(Color.Black)), new Rectangle(snake[0], new Size(4, 4))); 
         graphics.FillEllipse(new SolidBrush(Color.Black), new Rectangle(snake[0], new Size(4, 4))); 
         this.Invalidate(); 
         System.Threading.Thread.Sleep(500); 
         //this.Refresh(); 
         break; 
       } 





    } 

    private void Form1_KeyDown(object sender, KeyEventArgs e) 
    { 

     moveSnake(e); 
     this.Refresh(); 
    } 


    private void Form1_KeyPress(object sender, KeyPressEventArgs e) 
    { 
     MessageBox.Show(e.KeyChar.ToString()); 
    } 
    protected override void OnKeyPress(KeyPressEventArgs e) 
    { 
     base.OnKeyPress(e); 
     MessageBox.Show(e.KeyChar.ToString()); 
    } 
} 

Answer 1

你在表格上，並在最後的方向一平方每個刻度移動需要一個timer。

有了這個，你可以加快蛇的難度。

Answer 2

而不是讓Form1_KeyDown立即使用moveSnake來處理擊鍵，將擊鍵值存儲在表單級別變量中，然後使用計時器使用moveSnake進行處理。

也擺脫System.Threading.Thread.Sleep(500);在moveSnake