Lock Puzzle: A Perplexing Puzzle

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 LockProblemCS
{
    /// <summary>
    /// Coded by Christopher Denmark in 2010
    /// </summary>
    public partial class frmLockPuzzle : Form
    {
        #region Internals
        int MovesCounter = 0;
        #endregion

        #region Constructor
        public frmLockPuzzle()
        {
           InitializeComponent();
           RandomizeKeys();
            
        }
        #endregion

        #region Methods
        /// <summary>
        /// Scrambles the keys in random positions so it's a diferent game every time.
        /// </summary>
        private void RandomizeKeys()
        {
            foreach (Key l in this.panel1.Controls)
            {
                Random rnd = new Random();
                int index = rnd.Next(2);

                if (index == 0)
                {
                    l.TurnKey();
                    l.IsLocked = true;
                }
                else
                {
                    l.IsLocked = false;
                }

                System.Threading.Thread.Sleep(15);
            }

            // reset counter
            MovesCounter = 0;
            lblMoves.Text = "Moves: 0";
        }

        /// <summary>
        /// Checks the status to see if all of the keys are in the upright position
        /// </summary>
        public void CheckStatus()
        {
            int counter = 0;
            
            foreach (Key l in this.panel1.Controls)
            {
                if (l.IsLocked == false) // unlocked
                {
                    counter++;
                }
            }

            if (counter == 16)
            {
                tmrIdle.Enabled = false;
                MessageBox.Show("Congratulations! You've opened the lock."); 
            }
        }

        /// <summary>
        /// Toggles the states of the keys in corresponding rows and columns
        /// </summary>
        /// <param name="sender">The Key object sender.</param>
        /// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
        private void ToggleKeyStates(object sender, EventArgs e)
        {

            // Get Sender cell coordinates and assign them to X and X char arrays
            // This is the Key that was clicked
            char[] XY = ((Key)sender).Name.ToCharArray(1, 2);
            char X = XY[0];
            char Y = XY[1];

            // Using the clicked object as a reference, 
            // Cycle through controls and find the corresponding key objects
            foreach (Key l in this.panel1.Controls)
            {
                // split the names of the key objects into char array
                char[] xy = l.Name.ToCharArray(1, 2);
                char x = xy[0];
                char y = xy[1];

                // Change state of rows and columns only
                if (X == x || Y == y)
                {
                    if(l.IsTurning == false)
                        l.TurnKey();
                }
            }
        }

        /// <summary>
        /// Just displays how many times we click a key
        /// </summary>
        private void IncrementMovesCounter()
        {
            MovesCounter++;
            lblMoves.Text = "Moves: " + MovesCounter.ToString();
        }
        #endregion

        #region Events
        /// <summary>
        /// Generic handler that handles the click events for all key objects
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
        private void KeyObject_Click(object sender, EventArgs e)
        {
            // Turn the first key
            ((Key)sender).TurnKey();

            // make sure the keys have finished turning before performing further actions
            if (((Key)sender).IsTurning == false)
            {  
                ToggleKeyStates(sender, e);  // move the other keys
                IncrementMovesCounter();
                tmrIdle.Enabled = true; 
            }
            
        }

        /// <summary>
        /// Handles the Click event of the btnScramble control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
        private void btnScramble_Click(object sender, EventArgs e)
        {
            RandomizeKeys();
        }

        /// <summary>
        /// Handles the Tick event of the tmrCheck control.  Constantly check the orientation of the keys to see if they are all unlocked
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
        private void tmrIdle_Tick(object sender, EventArgs e)
        {
            CheckStatus();
        }
        #endregion

        private void mnuAbout_Click(object sender, EventArgs e)
        {
            MessageBox.Show("Programmed by: Christopher Denmark - 2010");
        }
    }
}