用C#写的贪吃蛇程序，移动的代码没写，谁能帮我写完。WinForm。

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 WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Graphics g;
        public Pen p;
        public Direction currentDirection = Direction.Up;
        public int interval = 20;
        public int x = 12;
        public int y = 10;
        public int snakeLong;
        public Queue<Point> pointQueue = new Queue<Point>();
        public int foodX = 10;
        public int foodY = 4;
        public int scores = 0;
        public int speed = 1;
        public bool eated = false;
        public Form1()
        {
            InitializeComponent();
        }
        public enum Direction
        {
           Left=37,
            Up,
            Right,
            Down
        }
        private void Form1_Paint(object sender, PaintEventArgs e)
        {
            g = this.CreateGraphics();
            p = new Pen(Color.Blue, 1);
            for (int i = 0; i < 19; i++)
            {
                g.DrawLine(p, 10 + i * interval, 10, 10 + i * interval, 370);
                g.DrawLine(p, 10, 10 + i * interval, 370, 10 + i * interval);
            }
        }
        protected override bool ProcessDialogKey(Keys keyData)
        {
            if (keyData == Keys.Enter)
                timer1.Start();
            if (keyData == Keys.Space)
                timer1.Stop();

            int diff = Math.Abs((int)currentDirection - (int)keyData);

            if (diff == 1 || diff == 3)
            {
                currentDirection = (Direction)keyData;
                return true;
            }
            // return base.ProcessDialogKey(keyData);
            return false;

        }
        private void button1_Click(object sender, EventArgs e)
        {
            this.numericUpDown1.Enabled = false;
            this.numericUpDown2.Enabled = false;
            this.button1.Enabled = false;
            snakeLong = (int)numericUpDown1.Value;
            speed = (int)numericUpDown2.Value;
            
            CreateSnake();
            timer1.Start();
        }
        public void CreateSnake()
        {
            x = 12;
            y = 10;
            scores = 0;
            currentDirection = Direction.Up;
            timer1.Interval = 1000 - (speed - 1) * 100;
            pointQueue.Clear();
            //label5.Text = scores.ToString();
            g.FillRectangle(new SolidBrush(BackColor), 0, 0, 370, 370);
            for (int i = 0; i < 19; i++)
            {
                g.DrawLine(p, 10 + i * interval, 10, 10 + i * interval, 370);
                g.DrawLine(p, 10, 10 + i * interval, 370, 10 + i * interval);
            }

            SolidBrush b2 = new SolidBrush(Color.Red);
            SolidBrush b1 = new SolidBrush(Color.Green);
            SolidBrush b3 = new SolidBrush(Color.Gray);

            //g.FillRectangle(b1, 11+foodX*interval,11+foodY*interval, 18, 18);

            g.FillRectangle(b2, 11 + x * interval, 11 + y * interval, 18, 18);
            pointQueue.Enqueue(new Point(x, y));

            for (int i = 1; i <= snakeLong; i++)
            {
                g.FillRectangle(b3, 11 + x * interval - i * 20, 11 + y * interval, 18, 18);
                this.pointQueue.Enqueue(new Point(x - i, y));
            }
            CreateFood();
        }
        public void CreateFood()
        {
            Point p;
            eated = false;
            bool foundBody;
            Random r = new Random();

           // label1.Text = "kjl";
            int k = 0;
            while (true) 
            {
                foundBody = false;//******
                foodX =r.Next(0,18);
                foodY = r.Next(0, 18);
                for (int j = 0; j < pointQueue.LongCount(); j++)
                {
                    k++;
                   // label3.Text = k.ToString();
                    p = pointQueue.ElementAt(j);
                    //label1.Text = foodX.ToString() + "/" + p.X.ToString();
                    //label2.Text = foodY.ToString() + "/" + p.Y.ToString();
                    if (foodX == p.X && foodY == p.Y)
                    { foundBody = true; break; }
                }
                if (!foundBody)
                    break;

            }

            g.FillRectangle(new SolidBrush(Color.Green), 11 + foodX * interval, 11 + foodY * interval, 18, 18);
        }

        private void numericUpDown1_ValueChanged(object sender, EventArgs e)
        {

        }
        public void GameOver()
        {
            timer1.Stop();
            MessageBox.Show("Game Over!");
            this.numericUpDown1.Enabled = true;
            this.numericUpDown2.Enabled = true;
            this.button1.Enabled = true;

        }
        private void timer1_Tick(object sender, EventArgs e)
        {
            snakeMove();
        }
        public void snakeMove()
        {
            
        
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }
    }
} --------------------编程问答--------------------  就是这里
public void snakeMove()
        {
            
        
        } --------------------编程问答-------------------- 给多少钱呢？ --------------------编程问答-------------------- 如果给分的话，可以帮写。。。

补充：.NET技术 ,  其他语言