c#贪吃蛇源码

感兴趣的,可以下载源码运行https://download.csdn.net/download/qq285679784/8706547,也可以找我免费要源码qq285679784

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 SnakeGame
{
    public partial class frmSnake : Form
    {
        public Point FoodLct = new Point();//缓存食物的坐标  
        public int snakeLen = 6;
        public const int SnakeMaxLength = 500;
        public Point[] snakeArr = new Point[SnakeMaxLength];
        public int snakeDrt = 2;
        public bool panDuan = true;
        public frmSnake()
        {
            InitializeComponent();
            int temp = 0;
            for (int i = snakeLen - 1; i >= 0; i--)
            {
                snakeArr[i].X = temp; snakeArr[i].Y = 0; 
                temp += 15;
            }
        }

        /*
        前言  
        说到贪吃蛇,大家可能小时候都玩过,小菜最近在整理Winfrom的学习系列,那我觉得有兴趣才会有学习,就从这个小游戏讲起吧。  

        其实我刚开始学习编程的时候,感觉写个贪吃蛇的程序会很难,因为涉及到画图什么的,其实现在来看,实现很简单。  

        实现贪吃蛇首先有几个元素:  
        蛇  
        食物  

        然后有几个行为:  
        吃食物和吃不到食物  
        撞墙和撞自己  
        说到这有点oo的意思啊,这篇就不啰嗦,只是简单实现,下篇会优化下。  

        其实整个贪吃蛇的难点就在于画图,可能用其他语言实现有点复杂,但是强大的.net提供了GDI+绘图机制,实现起来就很方便了,其次就是细节的处理,比如坐标的定位,蛇的行走路线等。  

        我们简单一点来看,食物可以看成一个小方格,蛇是有N个小方格组成,那我们就可以用GDI+这样实现:
        

        ///   
        /// 画一个小方块  
        ///   
        public void DrawShape(int x, int y)
        {
            Graphics g = this.CreateGraphics();
            Pen pen = new Pen(Color.Blue, 2);
            g.DrawRectangle(pen, x, y, 15, 15);
            g.FillRectangle(Brushes.Green, x, y, 15, 15);
        }

        ///   
        /// 画一个食物  
        ///   
        public void DrawFood(int x, int y)
        {
            Graphics g = this.CreateGraphics();
            Pen pen = new Pen(Color.Red, 2);
            SolidBrush brush = new SolidBrush(Color.Green);
            g.DrawRectangle(pen, x, y, 15, 15);
            g.FillRectangle(brush, x, y, 15, 15);
        }

        Graphics这个类我就不多说,大家可以看看MSDN上介绍的用法,上面是画蛇的最小单元-方格,和一个食物方格,蛇的方格大小是15*15,边框颜色是Blue,填充色是Green;食物方格的大小是15*15,边框颜色是Red,填充色是Green。  

        画好了基本元素,那下面就是用基本元素来表现蛇了,可以用Point数组来存储蛇的坐标,也就是每个方格的坐标,我们先看下代码: 
        ///   
        /// 设置Point数组坐标  
        ///   
        public void Forward(int drt)
        {
            Point temp = snakeArr[0];
            for (int i = snakeLen - 1; i > 0; i--)
            {
                snakeArr[i].X = snakeArr[i - 1].X;
                snakeArr[i].Y = snakeArr[i - 1].Y;
            }

            switch (drt)
            {
                case 1:
                    snakeArr[0].X = temp.X;
                    snakeArr[0].Y = temp.Y - 15;
                    break; //上   
                case 2:
                    snakeArr[0].X = temp.X + 15;
                    snakeArr[0].Y = temp.Y;
                    break; //右   
                case 3:
                    snakeArr[0].X = temp.X;
                    snakeArr[0].Y = temp.Y + 15;
                    break; //下   
                case 4:
                    snakeArr[0].X = temp.X - 15;
                    snakeArr[0].Y = temp.Y;
                    break; //左   
            }
        }
        drt参数是键盘上上下左右键对应的数字,snakeLen是数组的长度也就是方格的个数,上面那个for循环主要的作用是把前一个数组的坐标赋值给下一个,就像是毛毛虫爬行一样,后一节会按照前一节的路线来爬,下面那个switch的作用是,设置蛇头的行进路线。  
          
        再下面就是判断蛇是否吃到食物、是否撞到墙和撞到自己,因为蛇和食物都是用坐标存储的,所以只要判断蛇头坐标是否等于食物坐标就可以了:  
        
        ///   
        /// 判断是否吃到食物           
        ///   
        public bool EatedFoot(Point FoodLct)
        {
            if (snakeArr[0].X == FoodLct.X && snakeArr[0].Y == FoodLct.Y)
            {
                if (snakeLen < SnakeMaxLength)
                {
                    snakeLen++;
                    snakeArr[snakeLen].X = snakeArr[snakeLen - 1].X;
                    snakeArr[snakeLen].Y = snakeArr[snakeLen - 1].Y;
                }
                return true;
            }
            else
                return false;
        }

        ///   
        /// 判断是否撞到自己         
        ///   
        public bool CheckSnakeHeadInSnakeBody()
        {
            return this.CheckInSnakeBody(this.snakeArr[0].X, this.snakeArr[0].Y, 1);
        }

        ///   
        /// 检查输入的坐标是否在蛇的身上
        ///   
        public bool CheckInSnakeBody(int x, int y, int snkHead)
        {
            for (int i = snkHead; i < snakeLen; i++)
            {
                if (x == this.snakeArr[i].X && y == this.snakeArr[i].Y)
                {
                    return true;
                }
            } return false;
        }

        ///   
        /// 判断是否撞墙
        ///   
        ///   
        public bool CheckSnakeBodyInFrm()
        {
            if (this.snakeArr[0].X >= 594 || this.snakeArr[0].Y >= 399 - 32 || this.snakeArr[0].X < 0 || this.snakeArr[0].Y < 0)
                return true;
            else
                return false;
        }*/

        /*实现上面的几个步骤,简单版的贪吃蛇基本上就完成了,再加上一个timer控件,这样蛇就会“动”起来了,就这么简单。  
        完整代码:*/

        ///   
        /// 画一个小方块           
        ///   
        public void DrawShape(int x, int y)
        {
            Graphics g = this.CreateGraphics();
            Pen pen = new Pen(Color.Blue, 2);
            g.DrawRectangle(pen, x, y, 15, 15);
            g.FillRectangle(Brushes.Green, x, y, 15, 15);
        }

        ///   
        /// 画一个食物           
        ///   
        public void DrawFood(int x, int y)
        {
            Graphics g = this.CreateGraphics();
            Pen pen = new Pen(Color.Red, 2);
            SolidBrush brush = new SolidBrush(Color.Green);
            g.DrawRectangle(pen, x, y, 15, 15);
            g.FillRectangle(brush, x, y, 15, 15);
        }

        ///   
        /// 设置Point数组坐标           
        ///   
        public void Forward(int drt)
        {
            Point temp = snakeArr[0];
            for (int i = snakeLen - 1; i > 0; i--)
            {
                snakeArr[i].X = snakeArr[i - 1].X;
                snakeArr[i].Y = snakeArr[i - 1].Y;
            }
            switch (drt)
            {
                case 1: snakeArr[0].X = temp.X; snakeArr[0].Y = temp.Y - 15; break; //上   
                case 2: snakeArr[0].X = temp.X + 15; snakeArr[0].Y = temp.Y; break; //右   
                case 3: snakeArr[0].X = temp.X; snakeArr[0].Y = temp.Y + 15; break; //下   
                case 4: snakeArr[0].X = temp.X - 15; snakeArr[0].Y = temp.Y; break; //左   
            }
        }

        ///   
        /// 时间事件           ///   
        private void timer1_Tick(object sender, EventArgs e)
        {
            Graphics g = this.CreateGraphics();
            g.Clear(Color.DarkKhaki);//清除整个画面  

            Forward(snakeDrt);
            for (int i = 0; i < snakeLen; i++)
            {
                DrawShape(snakeArr[i].X, snakeArr[i].Y);
            }
            if (panDuan)
            {
                ShowFood();//DrawFood(FoodLct.X, FoodLct.Y);  
                panDuan = false;
            }
            if (EatedFoot(FoodLct))
            {
                ShowFood();
                DrawFood(FoodLct.X, FoodLct.Y);
            }
            else
            {
                DrawFood(FoodLct.X, FoodLct.Y);
            }
            if (CheckSnakeHeadInSnakeBody() || CheckSnakeBodyInFrm())
            {
                this.timer1.Enabled = false;
                MessageBox.Show("游戏结束!");
            }
        }

        ///   
        /// 按下方向键
        ///   
        private void frmSnake_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Up) snakeDrt = 1;
            else if (e.KeyCode == Keys.Down)
                snakeDrt = 3;
            else if (e.KeyCode == Keys.Right)
                snakeDrt = 2;
            else if (e.KeyCode == Keys.Left)
                snakeDrt = 4;
        }

        ///   
        /// 判断是否撞到自己
        ///   
        public bool CheckSnakeHeadInSnakeBody()
        {
            return this.CheckInSnakeBody(this.snakeArr[0].X, this.snakeArr[0].Y, 1);
        }

        ///   
        /// 检查输入的坐标是否在蛇的身上
        ///   
        public bool CheckInSnakeBody(int x, int y, int snkHead)
        {
            for (int i = snkHead; i < snakeLen; i++)
            {
                if (x == this.snakeArr[i].X && y == this.snakeArr[i].Y)
                {
                    return true;
                }
            }
            return false;
        }

        ///   
        /// 判断是否撞墙
        ///   
        ///   
        public bool CheckSnakeBodyInFrm()
        {
            if (this.snakeArr[0].X >= 594 || this.snakeArr[0].Y >= 399 - 32 || this.snakeArr[0].X < 0 || this.snakeArr[0].Y < 0)
                return true;
            else
                return false;
        }

        ///   
        /// 随机显示食物
        ///   
        public void ShowFood()
        {
            Random rmd = new Random();
            int x, y; x = rmd.Next(0, this.Width / 15) * 15;
            y = rmd.Next(0, this.Height / 15) * 15;
            //while (this.CheckInSnakeBody(x, y, 1))   
            //{            
            //    x = rmd.Next(0, 32) * 15;    
            //    y = 32 + rmd.Next(0, 30) * 15;           
            //}  
            FoodLct.X = x;
            FoodLct.Y = y;
        }

        ///   
        /// 判断是否吃到食物
        ///   
        public bool EatedFoot(Point FoodLct)
        {
            if (snakeArr[0].X == FoodLct.X && snakeArr[0].Y == FoodLct.Y)
            {
                if (snakeLen < SnakeMaxLength)
                {
                    snakeLen++;
                    snakeArr[snakeLen].X = snakeArr[snakeLen - 1].X; 
                    snakeArr[snakeLen].Y = snakeArr[snakeLen - 1].Y;
                } return true;
            }
            else
                return false;
        }
    }
}

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