ドラッグアンドドロップ後にラベルの位置をリセット

Question

ラベルで表される4つのディスクとラベルで表される3つのペグを持つC＃でゲームを作成しています。リセットボタンを押すと、ディスクが最初のディスクにリセットされます。 誰でもこれを行う方法をお手伝いできますか？

namespace HanoiTowers1 
{ 
/// <summary> 
/// This form lets the user play a game of HanoiTowers. 
/// 4 labels representing disks are shown on the first of three poles. It is possible 
/// to drag a disk from one pole to another. The rules for a valid move are that 
/// a bigger disk cannot be dropped on top of a smaller one. The aim of the game 
/// is to move the stack of disks to another pole one disk at a time. 
/// Moves made by Dragging are recorder as lines of text in a textBox 
/// It is possible to reset the disks to their original position 
/// It is also possible to replay the moves stored in the textbox 
/// either by stepping through them - the [Step] button 
/// or from a timer - started by the [Animate] button 
/// </summary> 
public class Form1 : System.Windows.Forms.Form 
{ 
    private Disk[,] disks = new Disk[3,4]; 
    //array of possible positions of disks over the 3 poles and four levels 
    //the array keeps track of where the labels representing the disks are 
    //the Disk class stores the pole and level of a label representing the disk 
    //as well as an object refrence to the label 

    private int targetPole = 0; 
    //used to communicate between DragDrop which identifies the pole being dropped on 
    //and the MouseDown method for the "disks" which will move a "disk" to a new 
    //pole after DragDrop is completed 

    private int animateLine = 0; 
    //used to say which line in a list of moves is the current move 

    private bool isStepping = false; 
    //if moves are being made from a list, not by drag and drop 
    //isStepping is used to prevent recording the moves made 

    private int MoveCount = 0; //count of moves made in a game 

    private System.Windows.Forms.Panel panel1; 
    private System.Windows.Forms.Label Disk4; 
    private System.Windows.Forms.Label Disk3; 
    private System.Windows.Forms.Label Disk2; 
    private System.Windows.Forms.Label Pole2; 
    private System.Windows.Forms.Label Pole1; 
    private System.Windows.Forms.Label Pole3; 
    private System.Windows.Forms.Label Disk1; 
    private System.Windows.Forms.Label label1; 
    private System.Windows.Forms.TextBox textBox1; 
    private System.Timers.Timer timer1; 
    private System.Windows.Forms.Button btnReset; 
    private System.Windows.Forms.Button btnAnimate; 
    private System.Windows.Forms.Button btnStep; 
    private System.Windows.Forms.Label lblMoves; 
    /// <summary> 
    /// Required designer variable. 
    /// </summary> 
    private System.ComponentModel.Container components = null; 

    public Form1() 
    { 
     // 
     // Required for Windows Form Designer support 
     // 
     InitializeComponent(); 

     // 
     // TODO: Add any constructor code after InitializeComponent call 
     // 
    } 

    /// <summary> 
    /// Clean up any resources being used. 
    /// </summary> 
    protected override void Dispose(bool disposing) 
    { 
     if(disposing) 
     { 
      if (components != null) 
      { 
       components.Dispose(); 
      } 
     } 
     base.Dispose(disposing); 
    } 

    #region Windows Form Designer generated code 
    /// <summary> 
    /// Required method for Designer support - do not modify 
    /// the contents of this method with the code editor. 
    /// </summary> 
    private void InitializeComponent() 
    { 
     this.panel1 = new System.Windows.Forms.Panel(); 
     this.Disk4 = new System.Windows.Forms.Label(); 
     this.Disk3 = new System.Windows.Forms.Label(); 
     this.Disk2 = new System.Windows.Forms.Label(); 
     this.Disk1 = new System.Windows.Forms.Label(); 
     this.btnReset = new System.Windows.Forms.Button(); 
     this.Pole2 = new System.Windows.Forms.Label(); 
     this.Pole1 = new System.Windows.Forms.Label(); 
     this.Pole3 = new System.Windows.Forms.Label(); 
     this.label1 = new System.Windows.Forms.Label(); 
     this.textBox1 = new System.Windows.Forms.TextBox(); 
     this.btnAnimate = new System.Windows.Forms.Button(); 
     this.timer1 = new System.Timers.Timer(); 
     this.btnStep = new System.Windows.Forms.Button(); 
     this.lblMoves = new System.Windows.Forms.Label(); 
     ((System.ComponentModel.ISupportInitialize)   (this.timer1)).BeginInit(); 
     this.SuspendLayout(); 
     // 
     // panel1 
     // 
     this.panel1.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(128)))), ((int)(((byte)(64)))), ((int)(((byte)(0))))); 
     this.panel1.Location = new System.Drawing.Point(120, 240); 
     this.panel1.Name = "panel1"; 
     this.panel1.Size = new System.Drawing.Size(584, 48); 
     this.panel1.TabIndex = 0; 
     // 
     // Disk4 
     // 
     this.Disk4.BackColor = System.Drawing.Color.Lime; 
     this.Disk4.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; 
     this.Disk4.Location = new System.Drawing.Point(157, 216); 
     this.Disk4.Name = "Disk4"; 
     this.Disk4.Size = new System.Drawing.Size(144, 24); 
     this.Disk4.TabIndex = 5; 
     this.Disk4.Click += new System.EventHandler(this.Disk1_Click); 
     this.Disk4.MouseDown += new System.Windows.Forms.MouseEventHandler(this.Disk1_MouseDown); 
     // 
     // Disk3 
     // 
     this.Disk3.BackColor = System.Drawing.Color.Lime; 
     this.Disk3.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; 
     this.Disk3.Location = new System.Drawing.Point(173, 192); 
     this.Disk3.Name = "Disk3"; 
     this.Disk3.Size = new System.Drawing.Size(112, 24); 
     this.Disk3.TabIndex = 6; 
     this.Disk3.Click += new System.EventHandler(this.Disk1_Click); 
     this.Disk3.MouseDown += new System.Windows.Forms.MouseEventHandler(this.Disk1_MouseDown); 
     // 
     // Disk2 
     // 
     this.Disk2.BackColor = System.Drawing.Color.Lime; 
     this.Disk2.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; 
     this.Disk2.Location = new System.Drawing.Point(189, 168); 
     this.Disk2.Name = "Disk2"; 
     this.Disk2.Size = new System.Drawing.Size(80, 24); 
     this.Disk2.TabIndex = 7; 
     this.Disk2.Click += new System.EventHandler(this.Disk1_Click); 
     this.Disk2.MouseDown += new System.Windows.Forms.MouseEventHandler(this.Disk1_MouseDown); 
     // 
     // Disk1 
     // 
     this.Disk1.BackColor = System.Drawing.Color.Lime; 
     this.Disk1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; 
     this.Disk1.Location = new System.Drawing.Point(205, 144); 
     this.Disk1.Name = "Disk1"; 
     this.Disk1.Size = new System.Drawing.Size(48, 24); 
     this.Disk1.TabIndex = 8; 
     this.Disk1.Click += new System.EventHandler(this.Disk1_Click); 
     this.Disk1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.Disk1_MouseDown); 
     // 
     // btnReset 
     // 
     this.btnReset.Location = new System.Drawing.Point(16, 16); 
     this.btnReset.Name = "btnReset"; 
     this.btnReset.Size = new System.Drawing.Size(104, 32); 
     this.btnReset.TabIndex = 9; 
     this.btnReset.Text = "Reset"; 
     this.btnReset.Click += new System.EventHandler(this.btnReset_Click); 
     // 
     // Pole2 
     // 
     this.Pole2.AllowDrop = true; 
     this.Pole2.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(255)))), ((int)(((byte)(192)))), ((int)(((byte)(128))))); 
     this.Pole2.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D; 
     this.Pole2.Location = new System.Drawing.Point(400, 112); 
     this.Pole2.Name = "Pole2"; 
     this.Pole2.Size = new System.Drawing.Size(24, 144); 
     this.Pole2.TabIndex = 10; 
     this.Pole2.DragDrop += new System.Windows.Forms.DragEventHandler(this.Pole1_DragDrop); 
     this.Pole2.DragEnter += new System.Windows.Forms.DragEventHandler(this.Pole2_DragEnter); 
     // 
     // Pole1 
     // 
     this.Pole1.AllowDrop = true; 
     this.Pole1.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(255)))), ((int)(((byte)(192)))), ((int)(((byte)(128))))); 
     this.Pole1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D; 
     this.Pole1.Location = new System.Drawing.Point(216, 112); 
     this.Pole1.Name = "Pole1"; 
     this.Pole1.Size = new System.Drawing.Size(24, 144); 
     this.Pole1.TabIndex = 11; 
     this.Pole1.DragDrop += new System.Windows.Forms.DragEventHandler(this.Pole1_DragDrop); 
     this.Pole1.DragEnter += new System.Windows.Forms.DragEventHandler(this.Pole2_DragEnter); 
     // 
     // Pole3 
     // 
     this.Pole3.AllowDrop = true; 
     this.Pole3.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(255)))), ((int)(((byte)(192)))), ((int)(((byte)(128))))); 
     this.Pole3.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D; 
     this.Pole3.Location = new System.Drawing.Point(576, 112); 
     this.Pole3.Name = "Pole3"; 
     this.Pole3.Size = new System.Drawing.Size(24, 144); 
     this.Pole3.TabIndex = 13; 
     this.Pole3.DragDrop += new System.Windows.Forms.DragEventHandler(this.Pole1_DragDrop); 
     this.Pole3.DragEnter += new System.Windows.Forms.DragEventHandler(this.Pole2_DragEnter); 
     // 
     // label1 
     // 
     this.label1.Location = new System.Drawing.Point(280, 16); 
     this.label1.Name = "label1"; 
     this.label1.Size = new System.Drawing.Size(64, 40); 
     this.label1.TabIndex = 14; 
     this.label1.Text = "Moves:"; 
     // 
     // textBox1 
     // 
     this.textBox1.Location = new System.Drawing.Point(728, 16); 
     this.textBox1.Multiline = true; 
     this.textBox1.Name = "textBox1"; 
     this.textBox1.Size = new System.Drawing.Size(136, 280); 
     this.textBox1.TabIndex = 15; 
     // 
     // btnAnimate 
     // 
     this.btnAnimate.Location = new System.Drawing.Point(16, 112); 
     this.btnAnimate.Name = "btnAnimate"; 
     this.btnAnimate.Size = new System.Drawing.Size(104, 32); 
     this.btnAnimate.TabIndex = 16; 
     this.btnAnimate.Text = "Animate"; 
     this.btnAnimate.Visible = false; 
     this.btnAnimate.Click += new System.EventHandler(this.btnAnimate_Click); 
     // 
     // timer1 
     // 
     this.timer1.Interval = 500D; 
     this.timer1.SynchronizingObject = this; 
     this.timer1.Elapsed += new System.Timers.ElapsedEventHandler(this.timer1_Elapsed); 
     // 
     // btnStep 
     // 
     this.btnStep.Location = new System.Drawing.Point(16, 64); 
     this.btnStep.Name = "btnStep"; 
     this.btnStep.Size = new System.Drawing.Size(104, 32); 
     this.btnStep.TabIndex = 17; 
     this.btnStep.Text = "Step"; 
     this.btnStep.Visible = false; 
     this.btnStep.Click += new System.EventHandler(this.btnStep_Click); 
     // 
     // lblMoves 
     // 
     this.lblMoves.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(192)))), ((int)(((byte)(255)))), ((int)(((byte)(255))))); 
     this.lblMoves.Location = new System.Drawing.Point(368, 16); 
     this.lblMoves.Name = "lblMoves"; 
     this.lblMoves.Size = new System.Drawing.Size(48, 24); 
     this.lblMoves.TabIndex = 18; 
     this.lblMoves.Text = "0"; 
     // 
     // Form1 
     // 
     this.AutoScaleBaseSize = new System.Drawing.Size(8, 19); 
     this.ClientSize = new System.Drawing.Size(888, 365); 
     this.Controls.Add(this.lblMoves); 
     this.Controls.Add(this.btnStep); 
     this.Controls.Add(this.btnAnimate); 
     this.Controls.Add(this.textBox1); 
     this.Controls.Add(this.label1); 
     this.Controls.Add(this.btnReset); 
     this.Controls.Add(this.Disk1); 
     this.Controls.Add(this.Disk2); 
     this.Controls.Add(this.Disk3); 
     this.Controls.Add(this.Disk4); 
     this.Controls.Add(this.panel1); 
     this.Controls.Add(this.Pole1); 
     this.Controls.Add(this.Pole2); 
     this.Controls.Add(this.Pole3); 
     this.Font = new System.Drawing.Font("Arial", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0))); 
     this.Name = "Form1"; 
     this.Text = "Basic version of Hanoi Towers"; 
     this.Load += new System.EventHandler(this.Form1_Load); 
     ((System.ComponentModel.ISupportInitialize)(this.timer1)).EndInit(); 
     this.ResumeLayout(false); 
     this.PerformLayout(); 

    } 
    #endregion 

    /// <summary> 
    /// The main entry point for the application. 
    /// </summary> 
    [STAThread] 
    static void Main() 
    { 
     Application.Run(new Form1()); 
    } 

    private void btnReset_Click(object sender, System.EventArgs e) 
    //put all four disks back in order on first pole 
    { 
     textBox1.Text = ""; 
     MoveCount = 0; 
     lblMoves.Text = MoveCount.ToString(); 

    } 

    private void Form1_Load(object sender, System.EventArgs e) 
    //create Disk objects matching the "Disk" labels on the first pole 
    { 
     disks[0,3] = new Disk(Disk1,1,4); 
     disks[0,2] = new Disk(Disk2,1,3); 
     disks[0,1] = new Disk(Disk3,1,2); 
     disks[0,0] = new Disk(Disk4,1,1); 
    } 

    private bool DropOnPole(int oldPole, int oldLevel, int newPole) 
    //Move a disk from its current position to the next available position 
    //on the new pole and check that the move is valid 
    { 
     int newLevel; 
     oldPole--; 
     oldLevel--; 
     newPole--; 

     if (disks[newPole, 3] != null) 
     { 
      MessageBox.Show("Invalid Move - pole is full"); 
      return false; 
     } 
     else if (disks[oldPole, oldLevel] == null) 
     { 
      MessageBox.Show("Invalid Move - no disk at start point"); 
      return false; 
     } 

     if (oldLevel < 3) 
     { 
      if (disks[oldPole, oldLevel +1 ] != null) 
      { 
       MessageBox.Show("Invalid Move - can only move top disk"); 
       return false; 
      } 
     } 

     newLevel = 3; 
     for (int i = 0; i < 4; i++) 
     { 
      if (disks[newPole,i] == null) 
      { 
       newLevel = i; 
       break; 
      } 
     } 

     if (newLevel > 0) 
     { 
      if (disks[oldPole, oldLevel].thisDisk.Width > disks[newPole,newLevel - 1].thisDisk.Width) 
      { 
       MessageBox.Show("Invalid Move - cannot drop bigger disk on smaller"); 
       return false; 
      } 
     } 

     disks[newPole, newLevel] = disks[oldPole, oldLevel]; 
     disks[oldPole, oldLevel] = null; 
     disks[newPole, newLevel].Move(newPole+1, newLevel+1); 
     if (!isStepping) 
     { 
      string theMove = disks[newPole, newLevel].thisDisk.Name + ',' 
       + (newPole +1).ToString() + ',' + (newLevel+1).ToString() +"\r\n"; 
      textBox1.AppendText(theMove); 
      MoveCount++; 
      lblMoves.Text = MoveCount.ToString(); 
     } 
     return true; 
    } 

    private void Disk1_Click(object sender, System.EventArgs e) 
    { 
    } 

    void getPoleAndLevel(out int pole, out int level, Label thislabel) 
    //given an object reference to the label representing a disk 
    //find its position in the 3x4 disks array of possible positions 
    { 
     pole = -1; 
     level = -1; 
     for (int ipole = 0; ipole < 3; ipole++) 
     { 
      for (int jlevel = 0; jlevel < 4; jlevel++) 
      { 
       if (disks[ipole,jlevel] != null) 
       { 
        if (disks[ipole,jlevel].thisDisk == thislabel) 
        { 
         pole = ipole + 1; 
         level = jlevel + 1; 
         break; 
        } 
       } 
      } 
      if (pole > -1) break; 
     } 
    } 

    private void Disk1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e) 
    { 
     Label alabel = (sender as Label); 
     int pole, level; 
     getPoleAndLevel(out pole, out level, alabel); 

     DragDropEffects result = alabel.DoDragDrop(alabel,DragDropEffects.All); 
     if (result != DragDropEffects.None) 
     { 
      DropOnPole(pole, level, targetPole); 
     } 
    } 

    private void Pole2_DragEnter(object sender, System.Windows.Forms.DragEventArgs e) 
    //change the cursor to show dropping is allowed 
    { 
     e.Effect = DragDropEffects.All; 
    } 

    private void Pole1_DragDrop(object sender, System.Windows.Forms.DragEventArgs e) 
    //when a drop happens store the information about which pole was 
    //dropped on in the global variable targetPole 
    { 
     Label alabel = (sender as Label); 
     if (alabel == Pole1) targetPole = 1; 
     else if (alabel == Pole2) targetPole = 2; 
     else if (alabel == Pole3) targetPole = 3; 
    } 

    private Label getDisk(string DiskName) 
    //given a string with the .Name property of a disk 
    //return a reference to that disk assuming that only valid names are passed 
    { 

     if (DiskName == "Disk1") 
     { 
      return Disk1; 
     } 
     else if (DiskName == "Disk2") 
     { 
      return Disk2; 
     } 
     else if (DiskName == "Disk3") 
     { 
      return Disk3; 
     } 
     else if (DiskName == "Disk4") 
     { 
      return Disk4; 
     } 
     else return Disk4; 
    } 

    private void btnAnimate_Click(object sender, System.EventArgs e) 
    //turn the timer on to begin animation of the moves stored in the textbox 
    { 

    } 

    private void btnStep_Click(object sender, System.EventArgs e) 
    //repeat of the moves stored in the textbox one move at a time 
    { 
     if (animateLine >= textBox1.Lines.Length-1) 
     { 
      MessageBox.Show("Last available move has been completed"); 
      return; 
     } 
     MakeNextMove(); 
    } 

    private void timer1_Elapsed(object sender, System.Timers.ElapsedEventArgs e) 
    //repeat one of the moves stored in the textbox each time the timer fires 
    { 
     if (!MakeNextMove()) 
     { 
      timer1.Enabled = false; 
     } 
    } 

    private bool MakeNextMove() 
    //repeat one of the moves stored in the textbox 
    { 
     int oldPole, oldLevel, newPole; 
     bool MoveOK = false; 
     string aMove = textBox1.Lines[animateLine]; 
     string[] parts = aMove.Split(','); 
     Label aDisk = getDisk(parts[0]); 
     newPole = Convert.ToInt32(parts[1]); 
     getPoleAndLevel(out oldPole, out oldLevel, aDisk); 
     isStepping = true; //will prevent adding more moves to the textbox from the replay 
     MoveOK = DropOnPole(oldPole, oldLevel, newPole); 
     isStepping = false; 

     if (!MoveOK) 
     { 
      return false; 
     } 

     animateLine++; 
     if (animateLine >= textBox1.Lines.Length) 
     { 
      return false; 
     } 
     return true; 
    } 
} 
/* sample set of text moves 

Disk1,2,1 Disk2,3,1 Disk1,3,2 Disk3,2,1 Disk1,1,2 Disk2,2,2 Disk1,2,3 */

おかげ ライアン

Answer 1

これを試してみてください：

objectA.Location = new Point((int)A.position, objectA.Location.Y); 

次に、他のディスクをオフセットしてその場所をリセットしてください。