Question

我有一个名为BaseRobot的课程。包含以下代码：

//=== Defines the possible orientation of the robot.
//=== Note the order is important to allow cycling to be performed in a meaningful manner.
public enum Compass
{
    North, East, South, West
};

//=== The basic robot.
public class BaseRobot
{
    //--- The behaviour properties that were identified, together with associated state.
    //--- The robot identification number.
   private int mId;
   public int id
   {
       get { return mId; }
   }

   //--- the direction in which the robot is currently facing.
   private Compass mOrientation;
   public Compass Orientation
   {
       get { return mOrientation; }
       set { mOrientation = value; }
   }

   //--- The robot's current position.
   private Point mPosition;
   public Point Position
   {
       get { return mPosition; }
   }


   //--- the robot's home position, where it was originally created.
   public Point mHome;
   public Point Home
   {
       get { return mHome; }
   }

    //--- Turn the orientation left (anti-clockwise) or right (clockwise).
    //--- Implementation relies on the N, E, S, W ordering of the enumeration values to allow the arithmetic to work.

    public void TurnLeft()
    {
        --mOrientation;
        if (mOrientation < 0) mOrientation = Compass.West;
    } // end turnLeft method.    

    public void TurnRight()
    {
        mOrientation = (Compass)(((int)mOrientation + 1) % 4);
    } // end turnRight method.

    //--- Move one unit forward in the current orientation.
    public void Move()
    {
        switch (mOrientation)
        {
            case Compass.North: mPosition.Y++; break;
            case Compass.East: mPosition.X++; break;
            case Compass.South: mPosition.Y--; break;
            case Compass.West: mPosition.X--; break;
        }
    } // end Move method.

    //--- Constructor methods.
    public BaseRobot(int aId)
    {
        mId = aId;
        mHome.X = 0;
        mHome = new Point(0, 0);
        mPosition = mHome;
    }
    public BaseRobot(int aId, int aX, int aY)
    {
        mId = aId;
        mHome = new Point(aX, aY);
        mPosition = mHome;
    } // end BaseRobot constructor methods.
}

在程序类中，我希望从此代码中调用对象，方法和属性，以显示重新定位机器人状态的信息，例如机器人主页，方向和位置。我正在寻找控制台来显示这样的东西：

机器人在＆lt; 0,0＆gt;处回家了。它面向北方，目前处于＆lt; 0,0＆gt;

关于我如何实现这一目标的任何想法？

Answer 1

首先，我建议你阅读Auto-Implemented Properties。这将使您的代码看起来像：

public Point Home { get; private set; }
public Point Position { get; private set; }
public Compass Orientation { get; private set; }

现在回到将机器人格式化为字符串。您可以覆盖机器人类的ToString()方法：

public override string ToString()
{
   return String.Format("Robot has home at {0} It is facing {1} and is currently at {2}",
                        mHome, mOrientation, mPosition);
}

或者简单地将机器人实例传递给以下方法：

public void WriteToConsole(BaseRobot robot)
{
   Console.WriteLine("Robot has home at {0} It is facing {1} and is currently at {2}",
                     robot.Home, robot.Orientation, robot.Position);
}

注意：默认情况下，System.Drawing.Point类将转换为字符串{X=42,Y=8}。如果您需要将其格式化为<42,8>，那么您应该手动提供X和Y的值，如下所示：

String.Format("Robot has home at <{0},{1}> It is facing {2} and is currently at <{3},{4}>", 
              Home.X, Home.Y, Orientation, Position.X, Position.Y);

或者如果Point是您自己的类，那么只需覆盖它的ToString()方法：

return String.Format("<{0},{1}>", X, Y);

Answer 2

尝试使用Console.WriteLine，调用类方法获取参数值，有关详细信息，请参阅此处

http://msdn.microsoft.com/en-us/library/aakt1eab.aspx

Answer 3

Format strings可以很容易地实现这一点。

您可以使用Console.Writeline，如下所示：

// Assumes a Robot r exists already
Console.Writeline("Robot has home at <{0},{1}> and is facing {2} and is currently at <{3},{4}>", r.Home.X, r.Home.Y, r.Orientation, r.Position.X, r.Position.Y);

Overriding ToString()是另一种方法：

public override string ToString(){
    return string.Format("Robot has home at <{0},{1}> and is facing {2} and is currently at <{3},{4}>", Home.X, Home.Y, Orientation, Position.X, Position.Y);
}

这里覆盖ToString（）似乎不正确，因为你显示的是一个机器人的状态信息，它实际上不是“机器人的字符串表示”，这是ToString（）应该提供的。我要么使用上面的Console.Writeline方法，要么在Robot上有一个字符串Status属性来获取这类信息。

从一个类调用对象，方法和属性，并在另一个类中显示信息

3 个答案: