C#扫雷游戏-1（砖块部分）

 

    前言：扫雷游戏是Windows系统的一款经典游戏。搜索一下google，有94万条网页。包括本人也写过2个版本的扫雷游戏。其实我们注重的不是游戏本身，而是技术或者说是知识点。

 

先看看我要介绍的这款扫雷涉及哪些知识点。

1） 自定义控件

2） GDI+

3） 枚举

4） 集合

5） 属性

6） 递归

大致看来涉及这些。我在介绍的过程中尽量结合C#的知识点运用。

需求说明：

1） 有不同级别，不同级别有不同的砖块，地雷数也不同

2） 点击砖块，如果没有地雷显示周围地雷数

3） 右击砖块可以设置多种状态：标志、疑问、取消标志

4） 如果砖块周围无雷，则打开周围的无雷区

5） 鼠标移动到砖块上，砖块颜色变化

 

1．制作砖块

需求分析：

1） 为了实现“鼠标移动到砖块上，砖块颜色变化”，决定采用自定义控件，这样将每个砖块都作为一个控件，可以定义MouseEnter和MouseLeave事件

（1）创建自定义控件Brick

public partial class Brick : UserControl{

    ……

}

（2）定义砖块状态的枚举

public partial class Brick : UserControl{

        ///<summary>

        /// 砖块状态

        ///</summary>

        public enum BrickState {

            UnSwept = 0,    // 未扫

            Mark = 1,       // 标记

            Unknow = 2,     // 未知

            Swept = 3       // 已扫

        }

}

（3）定义一些成员变量。如：状态、周围地雷数、位置以及是否有地雷

（4）根据不同的状态，显示不同的图片。这里我采用了属性设置。通过setter访问器实现状态与背景图片的关联。

[DefaultValue("UnSwept"), Description(" 砖块状态 " ), Category("Appearance")]

public BrickState State {

    get { return state; }

    set {

state = value;

if (state == BrickState.UnSwept) {

            BackgroundImage = images[0];

} else if(state == BrickState.Mark) {

            BackgroundImage = images[1];

} else if(state == BrickState.Unknow) {

            BackgroundImage = images[2];

} else if(state == BrickState.Swept && !IsMine) {

            BackgroundImage = images[3];

} else if(state == BrickState.Swept && IsMine) {

            BackgroundImage = images[11];

}

    }

}

注意到 [DefaultValue("UnSwept"), Description(" 砖块状态 " ), Category("Appearance")] ，这是为了让 VS2005 能看属性窗口中看到自定义的属性。

DefaultValue 是默认值， Description 是说明

（ 5 ）鼠标事件：鼠标移动砖块上 (MouseEnter) 、鼠标移出砖块 (MouseLeave) 、鼠标点击 ( 左击、右击、左右同击 )

这里说明一下，鼠标左右同击比较难以判断。现采用这种方式：当左键点击后记录下来，右键点击后也记录下来，再判断两个记录值，如果都为 true 表示左右同击。当鼠标键抬起时也要将记录改过来。

private void Brick_MouseEnter(object sender, EventArgs e) {

    if(state == BrickState.UnSwept) {

        BackgroundImage = images[4];

    }

}

private void Brick_MouseLeave(object sender, EventArgs e) {

    if(state == BrickState.UnSwept) {

        BackgroundImage = images[0];

    }

}

bool leftButton = false, rightButton = false;

private void Brick_MouseDown(object sender, MouseEventArgs e) {

    if(e.Button == MouseButtons.Left) {

        leftButton = true;

    } else if(e.Button == MouseButtons.Right) {

        rightButton = true;

    }

    if(state == BrickState.Swept && leftButton && rightButton) {

        // 左右键同时双击数字

        TogetherClick();

    } else if(state != BrickState.Swept && leftButton) {

        // 左键未扫砖块

        LeftClick();

    } else if(state != BrickState.Swept && rightButton) {

        // 右键未扫砖块

        RightClick();

    }

}

 

private void Brick_MouseUp(object sender, MouseEventArgs e) {

    if(e.Button == MouseButtons.Left) {

        leftButton = false;

    } else if(e.Button == MouseButtons.Right) {

        rightButton = false;

    }

}

（ 6 ）后面就是不同点击的逻辑问题

 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;

namespace MineSweeper {
    /// <summary>
    /// 砖块
    /// </summary>
    public partial class Brick : UserControl {

        /// <summary>
        /// 砖块状态
        /// </summary>
        public enum BrickState {
            UnSwept = 0,
            Mark = 1,
            Unknown = 2,
            Swept = 3
        }

        private BrickState state;
        private Bitmap[] images = new Bitmap[14];
        private int arroundMines;
        private int x;
        private int y;
        private bool isMine;

        [DefaultValue("UnSwept"), Description("砖块状态"), Category("Appearance")]
        public BrickState State {
            get { return state; }
            set {
                state = value;
                if(state == BrickState.UnSwept) {
                    BackgroundImage = images[0];
                } else if(state == BrickState.Mark) {
                    BackgroundImage = images[1];
                } else if(state == BrickState.Unknown) {
                    BackgroundImage = images[2];
                } else if(state == BrickState.Swept && !IsMine) {
                    if(ArroundMines == 0) {
                        BackgroundImage = images[3];
                    } else {
                        BackgroundImage = images[ArroundMines + 4];
                    }
                } else if(state == BrickState.Swept && IsMine) {
                    BackgroundImage = images[13];
                }
            }
        }
        [DefaultValue("0"), Description("四周地雷数"), Category("Appearance")]
        public int ArroundMines {
            get { return arroundMines; }
            set { arroundMines = value; }
        }
        [DefaultValue("0"), Description("距离左边的个数"), Category("Appearance")]
        public int X {
            get { return x; }
            set { x = value; }
        }
        [DefaultValue("0"), Description("距离上方的个数"), Category("Appearance")]
        public int Y {
            get { return y; }
            set { y = value; }
        }
        [DefaultValue("false"), Description("标记该砖块是否是地雷"), Category("Appearance")]
        public bool IsMine {
            get { return isMine; }
            set { isMine = value; }
        }

        public Brick() {
            InitializeComponent();

            images[0] = global::MineSweeper.Properties.Resources.blank;
            images[1] = global::MineSweeper.Properties.Resources.Mark;
            images[2] = global::MineSweeper.Properties.Resources.Unknown;
            images[3] = global::MineSweeper.Properties.Resources.blankBack;
            images[4] = global::MineSweeper.Properties.Resources.move;

            images[5] = global::MineSweeper.Properties.Resources._1;
            images[6] = global::MineSweeper.Properties.Resources._2;
            images[7] = global::MineSweeper.Properties.Resources._3;
            images[8] = global::MineSweeper.Properties.Resources._4;
            images[9] = global::MineSweeper.Properties.Resources._5;
            images[10] = global::MineSweeper.Properties.Resources._6;
            images[11] = global::MineSweeper.Properties.Resources._7;
            images[12] = global::MineSweeper.Properties.Resources._8;

            images[13] = global::MineSweeper.Properties.Resources.mine;

            BackgroundImageLayout = ImageLayout.Stretch;
            BackgroundImage = images[0];
        }



        #region 鼠标相关事件
        //鼠标Hover事件
        private void Brick_MouseEnter(object sender, EventArgs e) {
            if(state == BrickState.UnSwept) {
                BackgroundImage = images[4];
            }
        }
        private void Brick_MouseLeave(object sender, EventArgs e) {
            if(state == BrickState.UnSwept) {
                BackgroundImage = images[0];
            }
        }
        bool leftButton = false, rightButton = false;
        private void Brick_MouseDown(object sender, MouseEventArgs e) {
            if(e.Button == MouseButtons.Left) {
                leftButton = true;
            } else if(e.Button == MouseButtons.Right) {
                rightButton = true;
            }
            if(state == BrickState.Swept && leftButton && rightButton) {
                //左右键同时双击数字
                TogetherClick();
            } else if(state != BrickState.Swept && leftButton) {
                //左键未扫砖块
                LeftClick();
            } else if(state != BrickState.Swept && rightButton) {
                //右键未扫砖块
                RightClick();
            }
        }

        private void Brick_MouseUp(object sender, MouseEventArgs e) {
            if(e.Button == MouseButtons.Left) {
                leftButton = false;
            } else if(e.Button == MouseButtons.Right) {
                rightButton = false;
            }
        }
        //左右键同时按键事件
        private void TogetherClick() {

        }
        //左键事件
        private void LeftClick() {
            SweepBricks(X, Y);
        }
        //
        private void SweepBricks(int x, int y) {
            int rows = Game.Bricks.GetLength(0);
            int cols = Game.Bricks.GetLength(1);
            if(x < 0 || x > rows - 1 || y < 0 || y > cols - 1)
                return;
            Brick brick = Game.Bricks[x, y];
            if(brick.state == BrickState.UnSwept) {
                brick.State = BrickState.Swept;
                Console.WriteLine("({0},{1})",x,y);
                if(brick.ArroundMines == 0) {

                    SweepBricks(x - 1, y);
                    SweepBricks(x + 1, y);
                    SweepBricks(x, y - 1);
                    SweepBricks(x, y + 1);
                }
            }
        }
        //右键标记
        private void RightClick() {
            if(this.State != BrickState.Swept) {
                if(!this.isMine) {
                    State = (BrickState)((((int)state) + 1) % 3);
                } else {
                    State = BrickState.Swept;
                }
            }
        }
        #endregion




    }
}