MOJAB 24

using System;
using System.Drawing;
using System.Windows.Forms;

namespace SnakeGame
{
    public partial class Form1 : Form
    {
        private Timer timer;
        private PictureBox pictureBox;
        private Point snakePosition;
        private int snakeSize;
        private int direction;

        public Form1()
        {
            InitializeComponent();

            this.Text = "Snake Game";
            this.Size = new Size(800, 600);

            this.pictureBox = new PictureBox();
            this.pictureBox.Size = new Size(10, 10);
            this.pictureBox.BackColor = Color.Black;

            this.snakePosition = new Point(100, 100);
            this.snakeSize = 1;
            this.direction = 1;

            this.Controls.Add(this.pictureBox);

            this.timer = new Timer();
            this.timer.Interval = 100;
            this.timer.Tick += Timer_Tick;
            this.timer.Start();
        }

        private void Timer_Tick(object sender, EventArgs e)
        {
            MoveSnake();
            CheckCollision();
            Refresh();
        }

        private void MoveSnake()
        {
            switch (direction)
            {
                case 1:
                    snakePosition.Y -= 10;
                    break;
                case 2:
                    snakePosition.X += 10;
                    break;
                case 3:
                    snakePosition.Y += 10;
                    break;
                case 4:
                    snakePosition.X -= 10;
                    break;
            }
        }

        private void CheckCollision()
        {
            if (snakePosition.X < 0 || snakePosition.X >= this.ClientSize.Width ||
                snakePosition.Y < 0 || snakePosition.Y >= this.ClientSize.Height)
            {
                MessageBox.Show("Game Over!");
                ResetGame();
            }
        }

        private void ResetGame()
        {
            snakePosition = new Point(100, 100);
            snakeSize = 1;
            direction = 1;
        }

        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);

            e.Graphics.FillRectangle(Brushes.Black, new Rectangle(snakePosition, new Size(10, 10)));
        }

        protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
        {
            switch (keyData)
            {
                case Keys.Up:
                    if (direction != 3)
                        direction = 1;
                    break;
                case Keys.Right:
                    if (direction != 4)
                        direction = 2;
                    break;
                case Keys.Down:
                    if (direction != 1)
                        direction = 3;
                    break;
                case Keys.Left:
                    if (direction != 2)
                        direction = 4;
                    break;
            }

            return base.ProcessCmdKey(ref msg, keyData);
        }
    }
}