C#游戏开发之实现贪吃蛇游戏

public partial class FORM1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    public static bool ifStart = false;//判断是否开始
    public static int career = 400;//移动的速度
    Snake snake = new Snake();//实例化Snake类
    int snake_W = 20;//骨节的宽度
    int snake_H = 20;//骨节的高度
    public static bool pause = false;//是否暂停游戏

    /// <summary>
    /// 绘制游戏场景
    /// </summary>
    /// <param g="Graphics">封装一个GDI+绘图图面</param>
    public void ProtractTable(Graphics g)
    {
        for (int i = 0; i <= panel1.Width / snake_W; i++)//绘制单元格的纵向线
        {
            g.DrawLine(new Pen(Color.Black, 1), new Point(i * snake_W, 0), new Point(i * snake_W, panel1.Height));
        }
        for (int i = 0; i <= panel1.Height / snake_H; i++)//绘制单元格的横向线
        {
            g.DrawLine(new Pen(Color.Black, 1), new Point(0, i * snake_H), new Point(panel1.Width, i * snake_H));
        }
    }

    private void panel1_Paint(object sender, PaintEventArgs e)
    {
        Graphics g = panel1.CreateGraphics();//创建panel1控件的Graphics类
        ProtractTable(g);//绘制游戏场景
        if (!ifStart)//如是没有开始游戏
        {
            Snake.timer = timer1;
            Snake.label = label2;
            snake.Ophidian(panel1, snake_W);//初始化场地及贪吃蛇信息
        }
        else
        {
            for (int i = 0; i < Snake.List.Count; i++)//绘制蛇身
            {
                e.Graphics.FillRectangle(Snake.SolidB, ((Point)Snake.List[i]).X + 1, ((Point)Snake.List[i]).Y + 1, snake_W - 1, snake_H - 1);
            }
            e.Graphics.FillRectangle(Snake.SolidF, Snake.Food.X + 1, Snake.Food.Y + 1, snake_W - 1, snake_H - 1);//绘制食物
            if (Snake.ifGame)//如果游戏结束
                //绘制提示文本
                e.Graphics.DrawString("Game Over", new Font("宋体", 30, FontStyle.Bold), new SolidBrush(Color.DarkSlateGray), new PointF(150, 130));
        }
    }

    private void 开始ToolStripMenuItem_Click(object sender, EventArgs e)
    {
        NoviceCortrol(Convert.ToInt32(((ToolStripMenuItem)sender).Tag.ToString()));
        snake.BuildFood();
        textBox1.Focus();
    }

    /// <summary>
    /// 控制游戏的开始、暂停和结束
    /// </summary>
    /// <param n="int">标识</param>
    public void NoviceCortrol(int n)
    {
        switch (n)
        {
            case 1://开始游戏
                {
                    ifStart = false;
                    Graphics g = panel1.CreateGraphics();//创建panel1控件的Graphics类
                    g.FillRectangle(Snake.SolidD, 0, 0, panel1.Width, panel1.Height);//刷新游戏场地
                    ProtractTable(g);//绘制游戏场地
                    ifStart = true;//开始游戏
                    snake.Ophidian(panel1, snake_W);//初始化场地及贪吃蛇信息
                    timer1.Interval = career;//设置贪吃蛇移动的速度
                    timer1.Start();//启动计时器
                    pause = true;//是否暂停游戏
                    label2.Text = "0";//显示当前分数
                    break;
                }
            case 2://暂停游戏
                {
                    if (pause)//如果游戏正在运行
                    {
                        ifStart = true;//游戏正在开始
                        timer1.Stop();//停止计时器
                        pause = false;//当前已暂停游戏
                    }
                    else
                    {
                        ifStart = true;//游戏正在开始
                        timer1.Start();//启动计时器
                        pause = true;//开始游戏
                    }

                    break;
                }
            case 3://退出游戏
                {
                    timer1.Stop();//停止计时器
                    Application.Exit();//半闭工程
                    break;
                }
        }
    }

    private void 初级ToolStripMenuItem_Click(object sender, EventArgs e)
    {
        if (timer1.Enabled == false)//如果游戏没有开始
        {
            初级ToolStripMenuItem.Checked = false;//设置该项没有被选中
            中级ToolStripMenuItem.Checked = false;//设置该项没有被选中
            高级ToolStripMenuItem.Checked = false;//设置该项没有被选中
            ((ToolStripMenuItem)sender).Checked = true;//设置当前项被选中
            switch (Convert.ToInt32(((ToolStripMenuItem)sender).Tag.ToString()))
            {
                case 1://高级
                    {
                        career = 400;//设置移动的速度
                        break;
                    }

                case 2://中级
                    {
                        career = 200;
                        break;
                    }
                case 3://初
                    {
                        career = 50;
                        break;
                    }
            }
        }
        textBox1.Focus();//获得焦点
    }

    private void Form1_KeyDown(object sender, KeyEventArgs e)
    {
        int tem_n = -1;//记录移动键值
        if (e.KeyCode == Keys.Right)//如果按→键
            tem_n = 0;//向右移
        if (e.KeyCode == Keys.Left)//如果按←键
            tem_n = 1;//向左移
        if (e.KeyCode == Keys.Up)//如果按↑键
            tem_n = 2;//向上移
        if (e.KeyCode == Keys.Down)//如果按↓键
            tem_n = 3;//向下移
        if (tem_n != -1 && tem_n != Snake.Aspect)//如果移动的方向不是相同方向
        {
            if (Snake.ifGame == false)
            {
                //如果移动的方向不是相反的方向
                if (!((tem_n == 0 && Snake.Aspect == 1 || tem_n == 1 && Snake.Aspect == 0) || (tem_n == 2 && Snake.Aspect == 3 || tem_n == 3 && Snake.Aspect == 2)))
                {
                    Snake.Aspect = tem_n;//记录移动的方向
                    snake.SnakeMove(tem_n);//移动贪吃蛇
                }
            }
        }
        int tem_p = -1;//记录控制键值
        if (e.KeyCode == Keys.F2)//如果按F2键
            tem_p = 1;//开始游戏
        if (e.KeyCode == Keys.F3)//如果按F3键
            tem_p = 2;//暂停或继续游戏
        if (e.KeyCode == Keys.F4)//如果按F4键
            tem_p = 3;//关闭游戏
        if (tem_p != -1)//如果当前是操作标识
            NoviceCortrol(tem_p);//控制游戏的开始、暂止和关闭
    }

    private void timer1_Tick(object sender, EventArgs e)
    {
        snake.SnakeMove(Snake.Aspect);//移动贪吃蛇
    }
}

partial class Form1
{
    /// <summary>
    /// 必需的设计器变量。
    /// </summary>
    private System.ComponentModel.IContainer components = null;

    /// <summary>
    /// 清理所有正在使用的资源。
    /// </summary>
    /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
    protected override void Dispose(bool disposing)
    {
        if (disposing && (components != null))
        {
            components.Dispose();
        }
        base.Dispose(disposing);
    }

    #region windows 窗体设计器生成的代码

    /// <summary>
    /// 设计器支持所需的方法 - 不要
    /// 使用代码编辑器修改此方法的内容。
    /// </summary>
    private void InitializeComponent()
    {
        this.components = new System.ComponentModel.Container();
        this.menuStrip1 = new System.Windows.Forms.MenuStrip();
        this.设置ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
        this.初级ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
        this.中级ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
        this.高级ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
        this.控制ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
        this.开始ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
        this.暂停F3ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
        this.退出F4ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
        this.panel1 = new System.Windows.Forms.Panel();
        this.timer1 = new System.Windows.Forms.Timer(this.components);
        this.textBox1 = new System.Windows.Forms.TextBox();
        this.label1 = new System.Windows.Forms.Label();
        this.label2 = new System.Windows.Forms.Label();
        this.menuStrip1.SuspendLayout();
        this.SuspendLayout();
        // 
        // menuStrip1
        // 
        this.menuStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
        this.设置ToolStripMenuItem,
        this.控制ToolStripMenuItem});
        this.menuStrip1.Location = new System.Drawing.Point(0, 0);
        this.menuStrip1.Name = "menuStrip1";
        this.menuStrip1.Size = new System.Drawing.Size(525, 24);
        this.menuStrip1.TabIndex = 0;
        this.menuStrip1.Text = "menuStrip1";
        // 
        // 设置ToolStripMenuItem
        // 
        this.设置ToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
        this.初级ToolStripMenuItem,
        this.中级ToolStripMenuItem,
        this.高级ToolStripMenuItem});
        this.设置ToolStripMenuItem.Name = "设置ToolStripMenuItem";
        this.设置ToolStripMenuItem.Size = new System.Drawing.Size(41, 20);
        this.设置ToolStripMenuItem.Text = "设置";
        // 
        // 初级ToolStripMenuItem
        // 
        this.初级ToolStripMenuItem.Checked = true;
        this.初级ToolStripMenuItem.CheckState = System.Windows.Forms.CheckState.Checked;
        this.初级ToolStripMenuItem.Name = "初级ToolStripMenuItem";
        this.初级ToolStripMenuItem.Size = new System.Drawing.Size(94, 22);
        this.初级ToolStripMenuItem.Tag = "1";
        this.初级ToolStripMenuItem.Text = "初级";
        this.初级ToolStripMenuItem.Click += new System.EventHandler(this.初级ToolStripMenuItem_Click);
        // 
        // 中级ToolStripMenuItem
        // 
        this.中级ToolStripMenuItem.Name = "中级ToolStripMenuItem";
        this.中级ToolStripMenuItem.Size = new System.Drawing.Size(94, 22);
        this.中级ToolStripMenuItem.Tag = "2";
        this.中级ToolStripMenuItem.Text = "中级";
        this.中级ToolStripMenuItem.Click += new System.EventHandler(this.初级ToolStripMenuItem_Click);
        // 
        // 高级ToolStripMenuItem
        // 
        this.高级ToolStripMenuItem.Name = "高级ToolStripMenuItem";
        this.高级ToolStripMenuItem.Size = new System.Drawing.Size(94, 22);
        this.高级ToolStripMenuItem.Tag = "3";
        this.高级ToolStripMenuItem.Text = "高级";
        this.高级ToolStripMenuItem.Click += new System.EventHandler(this.初级ToolStripMenuItem_Click);
        // 
        // 控制ToolStripMenuItem
        // 
        this.控制ToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
        this.开始ToolStripMenuItem,
        this.暂停F3ToolStripMenuItem,
        this.退出F4ToolStripMenuItem});
        this.控制ToolStripMenuItem.Name = "控制ToolStripMenuItem";
        this.控制ToolStripMenuItem.Size = new System.Drawing.Size(41, 20);
        this.控制ToolStripMenuItem.Text = "控制";
        // 
        // 开始ToolStripMenuItem
        // 
        this.开始ToolStripMenuItem.Name = "开始ToolStripMenuItem";
        this.开始ToolStripMenuItem.Size = new System.Drawing.Size(130, 22);
        this.开始ToolStripMenuItem.Tag = "1";
        this.开始ToolStripMenuItem.Text = "开始    &F2";
        this.开始ToolStripMenuItem.Click += new System.EventHandler(this.开始ToolStripMenuItem_Click);
        // 
        // 暂停F3ToolStripMenuItem
        // 
        this.暂停F3ToolStripMenuItem.Name = "暂停F3ToolStripMenuItem";
        this.暂停F3ToolStripMenuItem.Size = new System.Drawing.Size(130, 22);
        this.暂停F3ToolStripMenuItem.Tag = "2";
        this.暂停F3ToolStripMenuItem.Text = "暂停    &F3";
        this.暂停F3ToolStripMenuItem.Click += new System.EventHandler(this.开始ToolStripMenuItem_Click);
        // 
        // 退出F4ToolStripMenuItem
        // 
        this.退出F4ToolStripMenuItem.Name = "退出F4ToolStripMenuItem";
        this.退出F4ToolStripMenuItem.Size = new System.Drawing.Size(130, 22);
        this.退出F4ToolStripMenuItem.Tag = "3";
        this.退出F4ToolStripMenuItem.Text = "退出    &F4";
        this.退出F4ToolStripMenuItem.Click += new System.EventHandler(this.开始ToolStripMenuItem_Click);
        // 
        // panel1
        // 
        this.panel1.Location = new System.Drawing.Point(12, 37);
        this.panel1.Name = "panel1";
        this.panel1.Size = new System.Drawing.Size(501, 401);
        this.panel1.TabIndex = 1;
        this.panel1.Paint += new System.Windows.Forms.PaintEventHandler(this.panel1_Paint);
        // 
        // timer1
        // 
        this.timer1.Interval = 400;
        this.timer1.Tick += new System.EventHandler(this.timer1_Tick);
        // 
        // textBox1
        // 
        this.textBox1.Location = new System.Drawing.Point(245, 513);
        this.textBox1.Name = "textBox1";
        this.textBox1.Size = new System.Drawing.Size(100, 21);
        this.textBox1.TabIndex = 2;
        this.textBox1.KeyDown += new System.Windows.Forms.KeyEventHandler(this.Form1_KeyDown);
        // 
        // label1
        // 
        this.label1.AutoSize = true;
        this.label1.Location = new System.Drawing.Point(12, 448);
        this.label1.Name = "label1";
        this.label1.Size = new System.Drawing.Size(41, 12);
        this.label1.TabIndex = 3;
        this.label1.Text = "分数：";
        // 
        // label2
        // 
        this.label2.AutoSize = true;
        this.label2.Location = new System.Drawing.Point(59, 448);
        this.label2.Name = "label2";
        this.label2.Size = new System.Drawing.Size(11, 12);
        this.label2.TabIndex = 4;
        this.label2.Text = "0";
        // 
        // Form1
        // 
        this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
        this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
        this.ClientSize = new System.Drawing.Size(525, 469);
        this.Controls.Add(this.label2);
        this.Controls.Add(this.label1);
        this.Controls.Add(this.textBox1);
        this.Controls.Add(this.panel1);
        this.Controls.Add(this.menuStrip1);
        this.MainMenuStrip = this.menuStrip1;
        this.Name = "Form1";
        this.Text = "贪吃蛇";
        this.KeyDown += new System.Windows.Forms.KeyEventHandler(this.Form1_KeyDown);
        this.menuStrip1.ResumeLayout(false);
        this.menuStrip1.PerformLayout();
        this.ResumeLayout(false);
        this.PerformLayout();

    }

    #endregion

    private System.Windows.Forms.MenuStrip menuStrip1;
    private System.Windows.Forms.ToolStripMenuItem 设置ToolStripMenuItem;
    private System.Windows.Forms.ToolStripMenuItem 初级ToolStripMenuItem;
    private System.Windows.Forms.ToolStripMenuItem 中级ToolStripMenuItem;
    private System.Windows.Forms.ToolStripMenuItem 高级ToolStripMenuItem;
    private System.Windows.Forms.ToolStripMenuItem 控制ToolStripMenuItem;
    private System.Windows.Forms.ToolStripMenuItem 开始ToolStripMenuItem;
    private System.Windows.Forms.ToolStripMenuItem 暂停F3ToolStripMenuItem;
    private System.Windows.Forms.ToolStripMenuItem 退出F4ToolStripMenuItem;
    private System.Windows.Forms.Panel panel1;
    private System.Windows.Forms.Timer timer1;
    private System.Windows.Forms.TextBox textBox1;
    private System.Windows.Forms.Label label1;
    private System.Windows.Forms.Label label2;
}

class Snake
{
    public static int Condyle = 0;//设置骨节的大小
    public static int Aspect = 0;//设置方向
    public static Point[] Place = { new Point(-1, -1), new Point(-1, -1), new Point(-1, -1), new Point(-1, -1), new Point(-1, -1), new Point(-1, -1) };//设置个骨节的位置
    public static Point Food = new Point(-1, -1);//设置食物的所在点
    public static bool ifFood = false;//是否有食物
    public static bool ifGame = false;//游戏是否结束
    public static int Field_width = 0;//场地的宽度
    public static int Field_Height = 0;//场地的高度
    public static Control control;//记录绘制贪吃蛇的控件
    public static Timer timer;//记录Timer组件
    public static SolidBrush SolidB = new SolidBrush(Color.Red);//设置贪吃蛇身体的颜色
    public static SolidBrush SolidD = new SolidBrush(Color.LightCoral);//设置背景颜色
    public static SolidBrush SolidF = new SolidBrush(Color.Blue);//设置食物的颜色
    public static Label label;//记录Label控件
    public static ArrayList List = new ArrayList();//实例化ArrayList数组
    Graphics g;//实例化Graphics类

    /// <summary>
    /// 初始化场地及贪吃蛇的信息
    /// </summary>
    /// <param Con="Control">控件</param>
    /// <param condyle="int">骨节大小</param>
    public void Ophidian(Control Con, int condyle)
    {
        Field_width = Con.Width;//获取场地的宽度
        Field_Height = Con.Height;//获取场地的高度
        Condyle = condyle;//记录骨节的大小
        control = Con;//记录背景控件
        g = control.CreateGraphics();//创建背景控件的Graphics类
        SolidD = new SolidBrush(Con.BackColor);//设置画刷颜色
        for (int i = 0; i < Place.Length; i++)//绘制贪吃蛇
        {
            Place[i].X = (Place.Length - i - 1) * Condyle;//设置骨节的横坐标位置
            Place[i].Y = (Field_Height / 2) - Condyle;//设置骨节的纵坐标位置
            g.FillRectangle(SolidB, Place[i].X + 1, Place[i].Y + 1, Condyle - 1, Condyle - 1);//绘制骨节
        }
        List = new ArrayList(Place);//记录每个骨节的位置
        ifGame = false;//停止游戏
        Aspect = 0;//设置方向为右
    }

    /// <summary>
    /// 移动贪吃蛇
    /// </summary>
    /// <param n="int">标识，判断的移动的方向</param>
    public void SnakeMove(int n)
    {
        Point tem_Point = new Point(-1, -1);//定义坐标结构
        switch (n)
        {
            case 0://右移
                {
                    tem_Point.X = ((Point)List[0]).X + Condyle;//蛇头向右移
                    tem_Point.Y = ((Point)List[0]).Y;
                    break;
                }
            case 1://左移
                {
                    tem_Point.X = ((Point)List[0]).X - Condyle;//蛇头向左移
                    tem_Point.Y = ((Point)List[0]).Y;
                    break;
                }
            case 2://上移
                {
                    tem_Point.Y = ((Point)List[0]).Y - Condyle;//蛇头向上移
                    tem_Point.X = ((Point)List[0]).X;
                    break;
                }
            case 3://下移
                {
                    tem_Point.Y = ((Point)List[0]).Y + Condyle;//蛇头向下移
                    tem_Point.X = ((Point)List[0]).X;
                    break;
                }
        }
        BuildFood();//生成食物
        if (!EstimateMove(tem_Point))//如果没有向相反的方向移动
        {
            Aspect = n;//改变贪吃蛇的移动方向
            if (!GameAborted(tem_Point))//如果游戏没有结束
            {
                ProtractSnake(tem_Point);//重新绘制蛇身
                EatFood();//吃食
            }
            g.FillRectangle(SolidF, Food.X + 1, Food.Y + 1, Condyle - 1, Condyle - 1);//绘制食物
        }
    }

    /// <summary>
    /// 吃食
    /// </summary>
    public void EatFood()
    {
        if (((Point)List[0]) == Food)//如果蛇头吃到了食物
        {
            List.Add(List[List.Count - 1]);//在蛇的尾部添加蛇身
            ifFood = false;//没有食物
            BuildFood();//生成食物
            label.Text = Convert.ToString(Convert.ToInt32(label.Text) + 5);//显示当前分数
        }
    }

    /// <summary>
    /// 游戏是否失败
    /// </summary>
    /// <param GameP="Point">设置文本的显示位置</param>
    public bool GameAborted(Point GameP)
    {
        bool tem_b = false;//游戏是否结束
        bool tem_body = false;//记录蛇身是否重叠
        for (int i = 1; i < List.Count; i++)//遍历所有骨节
        {
            if (((Point)List[0]) == ((Point)List[i]))//如是骨节重叠
                tem_body = true;//游戏失败
        }
        //判断蛇头是否超出游戏场地
        if (GameP.X <= -20 || GameP.X >= control.Width - 1 || GameP.Y <= -20 || GameP.Y >= control.Height - 1 || tem_body)
        {
            //绘制游戏结束的提示文本
            g.DrawString("Game Over", new Font("宋体", 30, FontStyle.Bold), new SolidBrush(Color.DarkSlateGray), new PointF(150, 130));
            ifGame = true;//游戏结束
            timer.Stop();//停止记时器
            tem_b = true;
        }
        return tem_b;
    }

    /// <summary>
    /// 判断蛇是否向相反的方向移动
    /// </summary>
    /// <param Ep="Point">移动的下一步位置</param>
    public bool EstimateMove(Point Ep)
    {
        bool tem_bool = false;//记录蛇头是否向相反的方向移动
        if (Ep.X == ((Point)List[0]).X && Ep.Y == ((Point)List[0]).Y)//如果蛇头向相反的方向移动
            tem_bool = true;
        return tem_bool;
    }

    /// <summary>
    /// 重新绘制蛇身
    /// </summary>
    public void ProtractSnake(Point Ep)
    {
        bool tem_bool = false;//是否清除移动后的蛇身
        List.Insert(0, Ep);//根据蛇头的移动方向，设置蛇头的位置
        Point tem_point = ((Point)List[List.Count-1]);//记录蛇尾的位置
        List.RemoveAt(List.Count - 1);//移除蛇的尾部
        //使骨节向前移动一位
        for (int i = 0; i < List.Count - 1; i++)
        {
            if (tem_point == ((Point)List[i]))
                tem_bool = true;
        }
        if (!tem_bool)//清除贪吃蛇移动前的蛇尾部份
            g.FillRectangle(SolidD, tem_point.X + 1, tem_point.Y + 1, Condyle - 1, Condyle - 1);
        for (int i = 0; i < List.Count; i++)//重新绘制蛇身
        {
            g.FillRectangle(SolidB, ((Point)List[0]).X + 1, ((Point)List[0]).Y + 1, Condyle - 1, Condyle - 1);
        }
    }

    /// <summary>
    /// 生成食物
    /// </summary>
    public void BuildFood()
    {
        if (ifFood == false)//如果没有食物
        {
            Point tem_p = new Point(-1, -1);//定义坐标结构
            bool tem_bool = true;//是否计算出食物的合位置
            bool tem_b = false;//判断食物是否和蛇身重叠
            while (tem_bool)//计算食物的显示位置
            {
                tem_b = false;
                tem_p = RectFood();//随机生成食物的位置
                for (int i = 0; i < List.Count; i++)//遍历整个蛇身的位置
                {
                    if (((Point)List[i]) == tem_p)//如果食物是否和蛇身重叠
                    {
                        tem_b = true;//记录重叠
                        break;
                    }
                }
                if (tem_b == false)//如果没有重叠
                    tem_bool = false;//退出循环
            }
            Food = tem_p;//记录食物的显示位置
        }
        ifFood = true;//有食物
    }

    /// <summary>
    /// 随机生成食物的节点
    /// </summary>
    public Point RectFood()
    {
        int tem_W = Field_width / 20;//获取场地的行数
        int tem_H = Field_Height / 20;//获取场地的列数
        Random RandW = new Random();//实例化Random类
        tem_W=RandW.Next(0, tem_W - 1);//生成食物的横向坐标
        Random RandH = new Random();//实例化Random类
        tem_H = RandH.Next(0, tem_H - 1);//生成食物的纵向坐标
        Point tme_P = new Point(tem_W * Condyle, tem_H * Condyle);//生成食物的显示位置
        return tme_P;
    }

}