贪吃蛇大作战双人版完整代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Threading;
 
namespace 贪吃蛇
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            this.Background = Brushes.Pink;
        }
        Random ra = new Random();
        Border food;
        Border bd1;
        DispatcherTimer dt;
        string s = "";
        string s1 = "";
        List<Border> snack = new List<Border>();
        List<Border> snakeback = new List<Border>();
        List<Border> snack1 = new List<Border>();
        List<Border> snakeback1 = new List<Border>();
        //创建一个放食物的集合
        List<Border> foodback = new List<Border>();
        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            this.Left = 0;
            this.Top = 0;
            //this.Width = SystemParameters.FullPrimaryScreenWidth;
            //this.Height = SystemParameters.FullPrimaryScreenHeight;
            this.Width = 800;
            this.Height = 600;
            for (int i = 0; i < 5; i++)
            {
                Border bd = new Border();
                if (i == 0)
                {
                    bd.Background = Brushes.Red;
                }
                else
                {
                    bd.Background = Brushes.Black;
                }
                bd.Height = bd.Width = 10;
                bd.CornerRadius = new CornerRadius(5);
                Canvas.SetLeft(bd, 200);
                Canvas.SetTop(bd, 200 + i * bd.Height);
                back.Children.Add(bd);
                snack.Add(bd);
                //存储蛇的位置的border
                Border bdback = new Border();
                Canvas.SetLeft(bdba