private void shuffleToolStripMenuItem_Click(object sender, EventArgs e)
{
Form enterseed = new EnterSeed();
enterseed.Owner = this;
enterseed.ShowDialog();
undolist.Addundo(puzzleState);
if ("OK".Equals(this.Action))
{
Puzzle shufflepuzzleState = new Puzzle(buttons);
shufflepuzzleState.shuffle(this.Seed);
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 3; j++)
{
buttons[j, i].BackColor = shufflepuzzleState.Colors[i, j];
}
}
this.toolStripStatusLabel1.Text = "Number of moves";
//set puzzlestate to the shuffled puzzle state and move to zero
puzzleState.Colors = shufflepuzzleState.Colors;
puzzleState.Moves = 0;
}
}
public void Addundo(Puzzle presentstate)
{
//clone the object
Puzzle clone = new Puzzle();
clone.Clone(presentstate);
//put the state onto the top of the stack
Undostates.Push(clone);
//if there are 5 objects in the stack
//pull 4 of them out, clear the stack and push them back
if (Undostates.Count == 5)
{
Stack<Puzzle> temp = new Stack<Puzzle>();
for (int i = 0; i < 4; i++)
{
temp.Push(Undostates.Pop());
}
Undostates.Clear();
for (int i = 0; i < 4; i++)
{
Undostates.Push(temp.Pop());
}
}
}
public MainForm()
{
InitializeComponent();
//generate all buttons
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 3; j++)
{
buttons[i, j] = new Button();
buttons[i, j].Location
= new Point(10 + 62 * i, 30 + 62 * j);
buttons[i, j].BackColor = Color.Lime;
buttons[i, j].Size = new Size(60, 60);
buttons[i, j].ImageIndex = i * 3 + j;
buttons[i, j].Click
+= new EventHandler(this.buttons_Click);
this.Controls.Add(buttons[i, j]);
}
}
puzzleState = new Puzzle(buttons);
}
//for solving reference type problem
//clone object
public void Clone(Puzzle presentpuzzle)
{
Moves = presentpuzzle.Moves;
Colors = new Color[PUZZLESIZE, PUZZLESIZE];
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 3; j++)
{
this.Colors[i, j] = Color.Lime;
this.Colors[i, j] = presentpuzzle.Colors[i, j];
}
}
}
public void Getundo()
{
//pull top object
Getundostate = Undostates.Pop();
}