C#中的贪吃蛇

痛定思痛。 2022-07-18 01:24 41阅读 0赞

本文主要讲解贪吃蛇，实现两条蛇，代码如下  
编辑器界面

主题代码

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1
    {
        /// <summary>
        /// MainWindow.xaml 的交互逻辑
        /// </summary>
        public partial class MainWindow : Window
        {
            public MainWindow()
            {
                InitializeComponent();
            }
            //结束
            private void Button_Click(object sender, RoutedEventArgs e)
            {
                this.Close();
            }
            //开始
            private void Button_Click_1(object sender, RoutedEventArgs e)
            {
                t1.Interval = TimeSpan.FromMilliseconds(100);
                t1.Start();
            }
            int SnakeSize = 20;
            int rows;
            int column;
            List<Border> snake = new List<Border>();
            List<Border> snake1 = new List<Border>();
            Random r = new Random();
            DispatcherTimer t1 = new DispatcherTimer();
    
            Border food = new Border();
            //加载
            private void Window_Loaded(object sender, RoutedEventArgs e)
            {
                rows = (int)back.Width / SnakeSize;
                column = (int)back.Height / SnakeSize;
                this.Left = this.Top = 0;
                CreateSnake();
                CreateSnake1();
                t1.Tick += t1_Tick;
                KeyDown += MainWindow_KeyDown;
                food.Width = food.Height = SnakeSize;
                food.CornerRadius = new CornerRadius(90);
                food.Background = new RadialGradientBrush(Color.FromRgb((byte)r.Next(0, 256), (byte)r.Next(0, 256), (byte)r.Next(0, 256)), Color.FromRgb((byte)r.Next(0, 256), (byte)r.Next(0, 256), (byte)r.Next(0, 256)));
                back.Children.Add(food);
                Canvas.SetLeft(food, r.Next(0, 20) * rows);
                Canvas.SetTop(food, r.Next(0, 20) * column);
                Canvas.SetZIndex(food, 3);
            }
            //获取键盘值
            void MainWindow_KeyDown(object sender, KeyEventArgs e)
            {
                if (e.Key.ToString() == "W" && snake[0].Tag.ToString() != "S")
                {
                    snake[0].Tag = "W";
                }
                if (e.Key.ToString() == "A" && snake[0].Tag.ToString() != "D")
                {
                    snake[0].Tag = "A";
                }
                if (e.Key.ToString() == "S" && snake[0].Tag.ToString() != "W")
                {
                    snake[0].Tag = "S";
                }
                if (e.Key.ToString() == "D" && snake[0].Tag.ToString() != "A")
                {
                    snake[0].Tag = "D";
                }
                //二
                if (e.Key.ToString() == "Up" && snake1[0].Tag.ToString() != "Down")
                {
                    snake1[0].Tag = "W";
                }
                if (e.Key.ToString() == "Left" && snake1[0].Tag.ToString() != "Right")
                {
                    snake1[0].Tag = "A";
                }
                if (e.Key.ToString() == "Down" && snake1[0].Tag.ToString() != "Up")
                {
                    snake1[0].Tag = "S";
                }
                if (e.Key.ToString() == "Right" && snake1[0].Tag.ToString() != "Left")
                {
                    snake1[0].Tag = "D";
                }
            }
            //移动吃食物
            void t1_Tick(object sender, EventArgs e)
            {
                for (int i = snake.Count - 1; i > 0; i--)
                {
                    Canvas.SetLeft(snake[i], Canvas.GetLeft(snake[i - 1]));
                    Canvas.SetTop(snake[i], Canvas.GetTop(snake[i - 1]));
                }
                switch (snake[0].Tag.ToString())
                {
                    case "W":
                        Canvas.SetTop(snake[0], Canvas.GetTop(snake[0]) - SnakeSize);
                        break;
                    case "A":
                        Canvas.SetLeft(snake[0], Canvas.GetLeft(snake[0]) - SnakeSize);
                        break;
                    case "S":
                        Canvas.SetTop(snake[0], Canvas.GetTop(snake[0]) + SnakeSize);
                        break;
                    case "D":
                        Canvas.SetLeft(snake[0], Canvas.GetLeft(snake[0]) + SnakeSize);
                        break;
                    default: break;
                }
                //吃食物
                if (Canvas.GetTop(food) == Canvas.GetTop(snake[0]) && Canvas.GetLeft(food) == Canvas.GetLeft(snake[0]))
                {
                    Border b = new Border();
                    b.Width = b.Height = SnakeSize;
                    b.CornerRadius = new CornerRadius(90);
                    b.Background = food.Background;
                    back.Children.Add(b);
                    Canvas.SetLeft(b, Canvas.GetLeft(snake[snake.Count - 1]));
                    Canvas.SetTop(b, Canvas.GetTop(snake[snake.Count - 1]));
                    Canvas.SetZIndex(b, 3);
                    snake.Add(b);
    
                    food.Background = new RadialGradientBrush(Color.FromRgb((byte)r.Next(0, 256), (byte)r.Next(0, 256), (byte)r.Next(0, 256)), Color.FromRgb((byte)r.Next(0, 256), (byte)r.Next(0, 256), (byte)r.Next(0, 256)));
                    Canvas.SetLeft(food, r.Next(0, 20) * rows);
                    Canvas.SetTop(food, r.Next(0, 20) * column);
                }
                //碰撞墙壁
                if (Canvas.GetLeft(snake[0]) >= 800)
                {
                    Canvas.SetLeft(snake[0], 0);
                }
                if (Canvas.GetLeft(snake[0]) <= -20)
                {
                    Canvas.SetLeft(snake[0], 780);
                } if (Canvas.GetTop(snake[0]) <= -20)
                {
                    Canvas.SetTop(snake[0], 780);
                } if (Canvas.GetTop(snake[0]) >= 800)
                {
                    Canvas.SetTop(snake[0], 0);
                }
                //第二条蛇
                for (int i = snake1.Count - 1; i > 0; i--)
                {
                    Canvas.SetLeft(snake1[i], Canvas.GetLeft(snake1[i - 1]));
                    Canvas.SetTop(snake1[i], Canvas.GetTop(snake1[i - 1]));
                }
                switch (snake1[0].Tag.ToString())
                {
                    case "W":
                        Canvas.SetTop(snake1[0], Canvas.GetTop(snake1[0]) - SnakeSize);
                        break;
                    case "A":
                        Canvas.SetLeft(snake1[0], Canvas.GetLeft(snake1[0]) - SnakeSize);
                        break;
                    case "S":
                        Canvas.SetTop(snake1[0], Canvas.GetTop(snake1[0]) + SnakeSize);
                        break;
                    case "D":
                        Canvas.SetLeft(snake1[0], Canvas.GetLeft(snake1[0]) + SnakeSize);
                        break;
                    default: break;
                }
                //吃食物
                if (Canvas.GetTop(food) == Canvas.GetTop(snake1[0]) && Canvas.GetLeft(food) == Canvas.GetLeft(snake1[0]))
                {
                    Border b = new Border();
                    b.Width = b.Height = SnakeSize;
                    b.CornerRadius = new CornerRadius(90);
                    b.Background = food.Background;
                    back.Children.Add(b);
                    Canvas.SetLeft(b, Canvas.GetLeft(snake1[snake1.Count - 1]));
                    Canvas.SetTop(b, Canvas.GetTop(snake1[snake1.Count - 1]));
                    Canvas.SetZIndex(b, 3);
                    snake1.Add(b);
    
                    food.Background = new RadialGradientBrush(Color.FromRgb((byte)r.Next(0, 256), (byte)r.Next(0, 256), (byte)r.Next(0, 256)), Color.FromRgb((byte)r.Next(0, 256), (byte)r.Next(0, 256), (byte)r.Next(0, 256)));
                    Canvas.SetLeft(food, r.Next(0, 20) * rows);
                    Canvas.SetTop(food, r.Next(0, 20) * column);
                }
                //碰撞墙壁
                if (Canvas.GetLeft(snake1[0]) >= 800)
                {
                    Canvas.SetLeft(snake1[0], 0);
                }
                if (Canvas.GetLeft(snake1[0]) <= -20)
                {
                    Canvas.SetLeft(snake1[0], 780);
                } if (Canvas.GetTop(snake1[0]) <= -20)
                {
                    Canvas.SetTop(snake1[0], 780);
                } if (Canvas.GetTop(snake1[0]) >= 800)
                {
                    Canvas.SetTop(snake1[0], 0);
                }
            }
            //造蛇
            private void CreateSnake()
            {
                for (int i = 0; i < 3; i++)
                {
                    Border kk = new Border();
                    kk.Width = kk.Height = SnakeSize;
                    kk.CornerRadius = new CornerRadius(90);
                    kk.Background = new RadialGradientBrush(Color.FromRgb((byte)r.Next(0, 256), (byte)r.Next(0, 256), (byte)r.Next(0, 256)), Color.FromRgb((byte)r.Next(0, 256), (byte)r.Next(0, 256), (byte)r.Next(0, 256)));
                    back.Children.Add(kk);
                    Canvas.SetLeft(kk, (2 - i) * SnakeSize);
                    Canvas.SetTop(kk, rows / 2 * SnakeSize);
                    Canvas.SetZIndex(kk, 3);
                    snake.Add(kk);
                    snake[0].Tag = "D";
                }
            }
            //制造蛇二
            private void CreateSnake1()
            {
                for (int i = 0; i < 3; i++)
                {
                    Border kk = new Border();
                    kk.Width = kk.Height = SnakeSize;
                    kk.CornerRadius = new CornerRadius(90);
                    kk.Background = new RadialGradientBrush(Color.FromRgb((byte)r.Next(0, 256), (byte)r.Next(0, 256), (byte)r.Next(0, 256)), Color.FromRgb((byte)r.Next(0, 256), (byte)r.Next(0, 256), (byte)r.Next(0, 256)));
                    back.Children.Add(kk);
                    Canvas.SetLeft(kk, i * SnakeSize + 740);
                    Canvas.SetTop(kk, rows / 2 * SnakeSize);
                    Canvas.SetZIndex(kk, 3);
                    snake1.Add(kk);
                    snake1[0].Tag = "A";
                }
            }
    
        }
    }

通过按键事件以及DispatcherTimer控制蛇的移动,并且DispatcherTimer还实现了蛇吃食物以及食物被吃掉后变换位置，蛇身的加长