Frogs Game

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

namespace GameFrogs
{
    public partial class ATable : UserControl
    {
        Button[] frog = new Button[7];
        public string GetButtonText(int i)
        {
            return frog[i].Text; 
        }
        public void SetButtonText(int i,string k)
        {
            frog[i].Text = k;
        }
        StringBuilder situation = new StringBuilder("LLL RRR", 7);

        public StringBuilder Situation
        {
            get { return situation; }
        }
        EventHandler LegalMove;
        public delegate void Next(int position);
        public event Next NextM;
        public ATable()
        {
            InitializeComponent();
            LegalMove = new EventHandler(MoveB);
            for (int i = 0; i < 7; i++)
            {
                frog[i] = new Button();
                frog[i].Text = situation[i].ToString();
                Repair(i);
                frog[i].Click += LegalMove;
                tLP.Controls.Add(frog[i], i, 1);

            }
        }
        public void Repair(int i)
        {
            if (frog[i].Text == "L")
            {
                frog[i].FlatStyle = FlatStyle.Popup;
                frog[i].FlatAppearance.BorderColor = Color.Green;
                frog[i].FlatAppearance.MouseDownBackColor = Color.Green;
                frog[i].FlatAppearance.MouseOverBackColor = Color.DarkGreen;
                frog[i].BackColor = Color.LightGreen;
            }
            else if (frog[i].Text == "R")
            {
                frog[i].FlatStyle = FlatStyle.Popup;
                frog[i].FlatAppearance.BorderColor = Color.Blue;
                frog[i].FlatAppearance.MouseDownBackColor = Color.Blue;
                frog[i].FlatAppearance.MouseOverBackColor = Color.DarkBlue;
                frog[i].BackColor = Color.LightBlue;
            }
            else
            {
                frog[i].FlatStyle = FlatStyle.Popup;
                frog[i].FlatAppearance.BorderColor = SystemColors.Control;
                frog[i].FlatAppearance.MouseDownBackColor = SystemColors.Control;
                frog[i].FlatAppearance.MouseOverBackColor = SystemColors.Control;
                frog[i].BackColor = SystemColors.Control;
            }
        }

        private void MoveB(object sender, EventArgs e)
        {
            if (((Button)sender).Text == "L")
                MoveFromLeftToRight(situation, tLP.GetColumn((Button)sender));
               
            else
                MoveFromRightToLeft(situation, tLP.GetColumn((Button)sender));
            if (NextM != null)
                this.NextM(tLP.GetColumn((Button)sender));
        }
        private void MoveFromLeftToRight(StringBuilder s, int j)
        {
            //legal move
            //text = situation
            //color=depends on text
            if (j < 6 && frog[j].Text == "L")
            {
                if (s[j + 1] == ' ')
                {
                    s[j + 1] = 'L';
                    s[j] = ' ';
                    frog[j + 1].Text = situation[j + 1].ToString();
                    frog[j].Text = situation[j].ToString(); ;
                    Repair(j);
                    Repair(j + 1);
                    return;
                }
                if (s[j + 1] == 'R' && s[j + 2] == ' ')
                {
                    s[j + 2] = 'L';
                    s[j] = ' ';
                    frog[j + 2].Text = situation[j + 2].ToString();
                    frog[j].Text = situation[j].ToString();
                    Repair(j + 2);
                    Repair(j);
                    return;
                }
            }
            MessageBox.Show("This move is not possible",
                            "Error",
                            MessageBoxButtons.OK,
                            MessageBoxIcon.Error);

        }
        private void MoveFromRightToLeft(StringBuilder s, int j)
        {
            //legal move
            if (j > 0 && frog[j].Text == "R")
            {
                if (s[j - 1] == ' ')
                {
                    s[j - 1] = 'R';
                    s[j] = ' ';
                    frog[j - 1].Text = situation[j - 1].ToString();
                    frog[j].Text = situation[j].ToString();
                    Repair(j - 1);
                    Repair(j);
                    return;
                }
                if (s[j - 1] == 'L' && s[j - 2] == ' ')
                {
                    s[j - 2] = 'R';
                    s[j] = ' ';
                    frog[j - 2].Text = situation[j - 2].ToString();
                    frog[j].Text = situation[j].ToString();
                    Repair(j - 2);
                    Repair(j);
                    return;
                }
            }
            MessageBox.Show("This move is not possible",
                            "Error",
                            MessageBoxButtons.OK,
                            MessageBoxIcon.Error);

        }
        public void ResetSituation()
        {
            situation = new StringBuilder("LLL RRR");
            for (int i = 0; i < 7; i++)
            {
                frog[i].Text = situation[i].ToString();
                Repair(i);
                tLP.Controls.Add(frog[i], i, 1);

            }
        }

    }
}