C#贪吃蛇小游戏源码

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

namespace 贪吃蛇游戏
{
    
    public partial class Start : Form
    {
        private Floor f1;
        //Bean b1;
        //Block block;
        Snake s1;
        public Start()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            // b1 = new Bean();
            //b1.Origin = new Point(50, 50);
            //b1.Display(this.CreateGraphics());

            //block = new Block();
            //block.IsHead = false;
            //block.Origin = new Point(100, 100);
            //block.Display(this.CreateGraphics());

            Point p1 = new Point(50, 50);
            s1 = new Snake(p1, 10);
            //s1.Display(this.CreateGraphics());
            timer1.Enabled=true;
            button1.Enabled = false;
            button2.Enabled = false;
        }

        private void button2_Click(object sender, EventArgs e)
        {
            
            s1.UnDisplay(this.CreateGraphics());
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            f1.Display(this.CreateGraphics());
            lblScore.Text = f1.score.ToString();
            if (f1.score >= 100 && f1.score < 200)
            { 
            入门ToolStripMenuItem_Click(sender, e);
            }
           else if (f1.score >= 200 && f1.score < 300)
            {
                高手ToolStripMenuItem_Click( sender, e);
            }
            else if (f1.score >=300)
            {
                大神ToolStripMenuItem_Click(sender, e);
            }
            if (f1.score >= 550)
            {
                this.timer1.Enabled = false;//结束游戏
                MessageBox.Show("恭喜你通关了");
            }
            if (f1.CheckSnake())
            {
                timer1.Enabled = false;
                MessageBox.Show("GameOver");
            }
        }

        private void Form1_KeyDown(object sender, KeyEventArgs e)
        {
            f1.Display(this.CreateGraphics());
            if (f1.CheckSnake())
            {
                timer1.Enabled = false;
                MessageBox.Show("游戏已经结束");
            }
            int k, d = 0;
            k = e.KeyValue;
            if (k == 37)
                d = 3;
            else if (k == 40)
                d = 2;
            else if (k == 38)
                d = 0;
            else if (k == 39)
                d = 1;
            f1.S.TurnDirection(d);
           
        }

        private void 暂停F2ToolStripMenuItem_Cl