Hello all,
I am having some trouble with my tic-tac-toe game. My main problem is that I do not know how to properly make it so that when i click a button on the form acting as spots for the x's and o's the proper letter will come up and end the users turn. It's a 2 player game. If you need any more info I will be glad to post more. Always willing to accept advice.
Thanks.
mkalinic
Lets see what you have so far.
Private Sub boxButton1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles boxButton1.Click^ when the button is clicked, it is either supposed to put an x or an o in the text. but i'm having trouble getting the information from the case in public sub win
Public Class TicTacToe
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim win As String
Select Case win
Case boxButton1.Text = "X", boxButton2.Text = "X", boxButton3.Text = "X", _
boxButton1.Text = "O", boxButton2.Text = "O", boxButton3.Text = "O"
MsgBox("WIN!!!", MsgBoxStyle.Information)
If MessageBox.Show("Play again?", "WINNER!!!", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.Yes Then
boxButton1.Text = ""
boxButton2.Text = ""
boxButton3.Text = ""
boxButton4.Text = ""
boxButton5.Text = ""
boxButton6.Text = ""
boxButton7.Text = ""
boxButton8.Text = ""
boxButton9.Text = ""
Else
Me.Close()
End If
Case boxButton4.Text = "X", boxButton5.Text = "X", boxButton6.Text = "X", _
boxButton4.Text = "O", boxButton5.Text = "O", boxButton6.Text = "O"
MsgBox("WIN!!!", MsgBoxStyle.Information)
If MessageBox.Show("Play again?", "WINNER!!!", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.Yes Then
boxButton1.Text = ""
boxButton2.Text = ""
boxButton3.Text = ""
boxButton4.Text = ""
boxButton5.Text = ""
boxButton6.Text = ""
boxButton7.Text = ""
boxButton8.Text = ""
boxButton9.Text = ""
Else
Me.Close()
End If
Case boxButton7.Text = "X", boxButton8.Text = "X", boxButton9.Text = "X", _
boxButton7.Text = "O", boxButton8.Text = "O", boxButton9.Text = "O"
MsgBox("WIN!!!", MsgBoxStyle.Information)
If MessageBox.Show("Play again?", "WINNER!!!", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.Yes Then
boxButton1.Text = ""
boxButton2.Text = ""
boxButton3.Text = ""
boxButton4.Text = ""
boxButton5.Text = ""
boxButton6.Text = ""
boxButton7.Text = ""
boxButton8.Text = ""
boxButton9.Text = ""
Else
Me.Close()
End If
Case boxButton1.Text = "X", boxButton4.Text = "X", boxButton7.Text = "X", _
boxButton1.Text = "O", boxButton4.Text = "O", boxButton7.Text = "O"
MsgBox("WIN!!!", MsgBoxStyle.Information)
If MessageBox.Show("Play again?", "WINNER!!!", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.Yes Then
boxButton1.Text = ""
boxButton2.Text = ""
boxButton3.Text = ""
boxButton4.Text = ""
boxButton5.Text = ""
boxButton6.Text = ""
boxButton7.Text = ""
boxButton8.Text = ""
boxButton9.Text = ""
Else
Me.Close()
End If
Case boxButton1.Text = "X", boxButton5.Text = "X", boxButton9.Text = "X", _
boxButton1.Text = "O", boxButton5.Text = "O", boxButton9.Text = "O"
MsgBox("WIN!!!", MsgBoxStyle.Information)
If MessageBox.Show("Play again?", "WINNER!!!", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.Yes Then
boxButton1.Text = ""
boxButton2.Text = ""
boxButton3.Text = ""
boxButton4.Text = ""
boxButton5.Text = ""
boxButton6.Text = ""
boxButton7.Text = ""
boxButton8.Text = ""
boxButton9.Text = ""
Else
Me.Close()
End If
Case boxButton3.Text = "X", boxButton5.Text = "X", boxButton7.Text = "X", _
boxButton3.Text = "O", boxButton5.Text = "O", boxButton7.Text = "O"
MsgBox("WIN!!!", MsgBoxStyle.Information)
If MessageBox.Show("Play again?", "WINNER!!!", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.Yes Then
boxButton1.Text = ""
boxButton2.Text = ""
boxButton3.Text = ""
boxButton4.Text = ""
boxButton5.Text = ""
boxButton6.Text = ""
boxButton7.Text = ""
boxButton8.Text = ""
boxButton9.Text = ""
Else
Me.Close()
End If
Case boxButton3.Text = "X", boxButton6.Text = "X", boxButton9.Text = "X", _
boxButton3.Text = "O", boxButton6.Text = "O", boxButton9.Text = "O"
MsgBox("WIN!!!", MsgBoxStyle.Information)
If MessageBox.Show("Play again?", "WINNER!!!", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.Yes Then
boxButton1.Text = ""
boxButton2.Text = ""
boxButton3.Text = ""
boxButton4.Text = ""
boxButton5.Text = ""
boxButton6.Text = ""
boxButton7.Text = ""
boxButton8.Text = ""
boxButton9.Text = ""
Else
Me.Close()
End If
Case boxButton2.Text = "X", boxButton5.Text = "X", boxButton8.Text = "X", _
boxButton7.Text = "O", boxButton8.Text = "O", boxButton9.Text = "O"
MsgBox("WIN!!!", MsgBoxStyle.Information)
If MessageBox.Show("Play again?", "WINNER!!!", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.Yes Then
boxButton1.Text = ""
boxButton2.Text = ""
boxButton3.Text = ""
boxButton4.Text = ""
boxButton5.Text = ""
boxButton6.Text = ""
boxButton7.Text = ""
boxButton8.Text = ""
boxButton9.Text = ""
Else
Me.Close()
End If
End Select
End Sub
Private Sub resetButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles resetButton.Click
If MessageBox.Show("Do you want to save the data", "Save", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.Yes Then
boxButton1.Text = ""
boxButton2.Text = ""
boxButton3.Text = ""
boxButton4.Text = ""
boxButton5.Text = ""
boxButton6.Text = ""
boxButton7.Text = ""
boxButton8.Text = ""
boxButton9.Text = ""
nameLabel1.Text = ""
nameLabel2.Text = ""
player1WinsLabel.Text = ""
player2WinsLabel.Text = ""
Else
boxButton1.Text = ""
boxButton2.Text = ""
boxButton3.Text = ""
boxButton4.Text = ""
boxButton5.Text = ""
boxButton6.Text = ""
boxButton7.Text = ""
boxButton8.Text = ""
boxButton9.Text = ""
nameLabel1.Text = ""
nameLabel2.Text = ""
End If
End Sub
Private Sub playGameButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles playGameButton.Click
Dim Prompt As String
Dim Player1 As String
Dim Player2 As String
Prompt = "Please enter the name for player #1"
Player1 = InputBox(Prompt, "Player One")
Prompt = "Please enter the name for player #2"
Player2 = InputBox(Prompt, "Player Two")
nameLabel1.Text = Player1.ToString()
nameLabel2.Text = Player2.ToString()
End Sub
Private Sub boxButton1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles boxButton1.Click
Dim player1 As String
Dim player2 As String
nameLabel1.Text = player1
nameLabel2.Text = player2
End Sub
Public Sub Win()
Dim win As String
Select Case win
Case boxButton1.Text = "X", boxButton2.Text = "X", boxButton3.Text = "X", _
boxButton1.Text = "O", boxButton2.Text = "O", boxButton3.Text = "O"
MsgBox("WIN!!!", MsgBoxStyle.Information)
If MessageBox.Show("Play again?", "WINNER!!!", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.Yes Then
boxButton1.Text = ""
boxButton2.Text = ""
boxButton3.Text = ""
boxButton4.Text = ""
boxButton5.Text = ""
boxButton6.Text = ""
boxButton7.Text = ""
boxButton8.Text = ""
boxButton9.Text = ""
Else
Me.Close()
End If
Case boxButton4.Text = "X", boxButton5.Text = "X", boxButton6.Text = "X", _
boxButton4.Text = "O", boxButton5.Text = "O", boxButton6.Text = "O"
MsgBox("WIN!!!", MsgBoxStyle.Information)
If MessageBox.Show("Play again?", "WINNER!!!", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.Yes Then
boxButton1.Text = ""
boxButton2.Text = ""
boxButton3.Text = ""
boxButton4.Text = ""
boxButton5.Text = ""
boxButton6.Text = ""
boxButton7.Text = ""
boxButton8.Text = ""
boxButton9.Text = ""
Else
Me.Close()
End If
Case boxButton7.Text = "X", boxButton8.Text = "X", boxButton9.Text = "X", _
boxButton7.Text = "O", boxButton8.Text = "O", boxButton9.Text = "O"
MsgBox("WIN!!!", MsgBoxStyle.Information)
If MessageBox.Show("Play again?", "WINNER!!!", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.Yes Then
boxButton1.Text = ""
boxButton2.Text = ""
boxButton3.Text = ""
boxButton4.Text = ""
boxButton5.Text = ""
boxButton6.Text = ""
boxButton7.Text = ""
boxButton8.Text = ""
boxButton9.Text = ""
Else
Me.Close()
End If
Case boxButton1.Text = "X", boxButton4.Text = "X", boxButton7.Text = "X", _
boxButton1.Text = "O", boxButton4.Text = "O", boxButton7.Text = "O"
MsgBox("WIN!!!", MsgBoxStyle.Information)
If MessageBox.Show("Play again?", "WINNER!!!", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.Yes Then
boxButton1.Text = ""
boxButton2.Text = ""
boxButton3.Text = ""
boxButton4.Text = ""
boxButton5.Text = ""
boxButton6.Text = ""
boxButton7.Text = ""
boxButton8.Text = ""
boxButton9.Text = ""
Else
Me.Close()
End If
Case boxButton1.Text = "X", boxButton5.Text = "X", boxButton9.Text = "X", _
boxButton1.Text = "O", boxButton5.Text = "O", boxButton9.Text = "O"
MsgBox("WIN!!!", MsgBoxStyle.Information)
If MessageBox.Show("Play again?", "WINNER!!!", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.Yes Then
boxButton1.Text = ""
boxButton2.Text = ""
boxButton3.Text = ""
boxButton4.Text = ""
boxButton5.Text = ""
boxButton6.Text = ""
boxButton7.Text = ""
boxButton8.Text = ""
boxButton9.Text = ""
Else
Me.Close()
End If
Case boxButton3.Text = "X", boxButton5.Text = "X", boxButton7.Text = "X", _
boxButton3.Text = "O", boxButton5.Text = "O", boxButton7.Text = "O"
MsgBox("WIN!!!", MsgBoxStyle.Information)
If MessageBox.Show("Play again?", "WINNER!!!", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.Yes Then
boxButton1.Text = ""
boxButton2.Text = ""
boxButton3.Text = ""
boxButton4.Text = ""
boxButton5.Text = ""
boxButton6.Text = ""
boxButton7.Text = ""
boxButton8.Text = ""
boxButton9.Text = ""
Else
Me.Close()
End If
Case boxButton3.Text = "X", boxButton6.Text = "X", boxButton9.Text = "X", _
boxButton3.Text = "O", boxButton6.Text = "O", boxButton9.Text = "O"
MsgBox("WIN!!!", MsgBoxStyle.Information)
If MessageBox.Show("Play again?", "WINNER!!!", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.Yes Then
boxButton1.Text = ""
boxButton2.Text = ""
boxButton3.Text = ""
boxButton4.Text = ""
boxButton5.Text = ""
boxButton6.Text = ""
boxButton7.Text = ""
boxButton8.Text = ""
boxButton9.Text = ""
Else
Me.Close()
End If
Case boxButton2.Text = "X", boxButton5.Text = "X", boxButton8.Text = "X", _
boxButton7.Text = "O", boxButton8.Text = "O", boxButton9.Text = "O"
MsgBox("WIN!!!", MsgBoxStyle.Information)
If MessageBox.Show("Play again?", "WINNER!!!", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.Yes Then
boxButton1.Text = ""
boxButton2.Text = ""
boxButton3.Text = ""
boxButton4.Text = ""
boxButton5.Text = ""
boxButton6.Text = ""
boxButton7.Text = ""
boxButton8.Text = ""
boxButton9.Text = ""
Else
Me.Close()
End If
End Select
End Sub
End ClassThe first thing I would suggest is to create a two-dimensional array for the buttons. If you want to place the buttons manually (at design time) you can initialize the array at run time as follows (in the form New or Load event handlers). Just make sure you declare the array to have Class scope.
Dim buttons(2, 2) As System.Windows.Forms.Button 'make this Class scope
buttons(0,0) = boxButton1
buttons(0,1) = boxButton2
buttons(0,2) = boxButton3
buttons(1,0) = boxButton4
buttons(1,1) = boxButton5
buttons(1,2) = boxButton6
buttons(2,0) = boxButton7
buttons(2,1) = boxButton8
buttons(2,2) = boxButton9
Or if you like you can declare the array as (3,3) and use indices 1-3 instead of 0-2 if that seems more natural. Using the array you can use loops for your testing instead of hard coding nine separate tests.
It is slightly more complicated to do the following but you could also create the buttons at run time. This is cleaner and allows you to have only one routine that handles the click event for all buttons. That would allow you to code the handler as:
Private Sub ButtonClicked(ByVal sender As Object, ByVal e As System.EventArgs)
Dim button As System.Windows.Forms.Button = sender
If button.Text = "" Then
button.Text = IIF(PlayerOne,"X","O")
CheckForWinner()
End If
End Sub
Overlooking your code, I think this might help your little finger from scrolling so much and the rest of the world from not using the electricity to load similar code over and over again.
Private Sub clearBoxes()
boxButton1.Text = ""
boxButton2.Text = ""
boxButton3.Text = ""
boxButton4.Text = ""
boxButton5.Text = ""
boxButton6.Text = ""
boxButton7.Text = ""
boxButton8.Text = ""
boxButton9.Text = ""
End SubOther than that, see if this helps.
Public Class Form1
Private sPlayer1 As String = "Player One"
Private sPlayer2 As String = "Player Two"
Private sPlayerInTurn As String = sPlayer1
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Me.Text = sPlayerInTurn
End Sub
Private Sub _boxButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles boxButton1.Click, boxButton2.Click, boxButton3.Click, boxButton4.Click '// etc...
If sPlayerInTurn = sPlayer1 Then sPlayerInTurn = sPlayer2 Else sPlayerInTurn = sPlayer1
Me.Text = sPlayerInTurn
End Sub
End ClassMe.text says its not a member of tic-tac-toe project
and under every boxbutton1.click boxbutton2.click. etc. says:
handles clause requires a WithEvents variable defined in the containing type or one of its base types
is their something that i am doing wrong and/or missing
thanks for the help
means a alot
mkalinic
Yes there is something your doing wrong orelse you would not get those messages. Post some more for more explanation.
In the mean time, Heres a new rendition to your tick tack toe game. Its button less. Might not be what your looking for here but you might pick up a few ideas from it.
Public Class Form1
Private PlayerOneSelectedCells As New List(Of Point)
Private PlayerTwoSelectedCells As New List(Of Point)
Private IsPlayerOne As Boolean = True
Private Const Columns As Integer = 3
Private Const Rows As Integer = 3
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Panel1.Size = New Size(150, 150)
Panel1.BorderStyle = BorderStyle.FixedSingle
End Sub
Private Sub Panel1_MouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Panel1.MouseClick
'Calculate the clicked cell
'This will be 0 - 2 since flooring division of 3 "Columns, Rows"
Dim ClickedCell As New Point(Math.Floor(e.X / (Panel1.Width / Columns)), _
Math.Floor(e.Y / (Panel1.Height / Rows)))
'If neither player one or two owns this cell then
'add it to the respective players cells
If Not PlayerOneSelectedCells.Contains(ClickedCell) AndAlso _
Not PlayerTwoSelectedCells.Contains(ClickedCell) Then
If IsPlayerOne Then
PlayerOneSelectedCells.Add(ClickedCell)
Else
PlayerTwoSelectedCells.Add(ClickedCell)
End If
'Switch players
IsPlayerOne = Not IsPlayerOne
End If
'redraw the grid with the new letter
Panel1.Invalidate()
Panel1.Update()
'check for winner or tie
If IsWinner(PlayerOneSelectedCells) Then
If MsgBox("Player 1 wins Biatch", MsgBoxStyle.YesNo, "Play Again?") = MsgBoxResult.Yes Then
ResetGame()
End If
ElseIf IsWinner(PlayerTwoSelectedCells) Then
If MsgBox("Player 2 wins", MsgBoxStyle.YesNo, "Play Again?") = MsgBoxResult.Yes Then
ResetGame()
End If
ElseIf PlayerOneSelectedCells.Count + PlayerTwoSelectedCells.Count = (Columns * Rows) Then
'There would be no more cells to choose from
If MsgBox("Tie", MsgBoxStyle.YesNo, "Play Again?") = MsgBoxResult.Yes Then
ResetGame()
End If
End If
End Sub
Private Sub Panel1_Paint(ByVal sender As System.Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Panel1.Paint
Dim ColumnWidth As Integer = Math.Floor(Panel1.Width / Columns)
Dim RowHeight As Integer = Math.Floor(Panel1.Height / Rows)
'Draw the grid
e.Graphics.DrawLine(Pens.Black, ColumnWidth, 0, ColumnWidth, Panel1.Height)
e.Graphics.DrawLine(Pens.Black, CInt(ColumnWidth * 2), 0, CInt(ColumnWidth * 2), Panel1.Height)
e.Graphics.DrawLine(Pens.Black, 0, RowHeight, Panel1.Width, RowHeight)
e.Graphics.DrawLine(Pens.Black, 0, CInt(RowHeight * 2), Panel1.Width, CInt(RowHeight * 2))
'Use to center the letters
Dim StringFormat As New StringFormat
StringFormat.LineAlignment = StringAlignment.Center
StringFormat.Alignment = StringAlignment.Center
'Draw player 1's x's
For Each SelectedCell In PlayerOneSelectedCells
e.Graphics.DrawString("X", Me.Font, Brushes.Red, New Rectangle(SelectedCell.X * ColumnWidth, SelectedCell.Y * RowHeight, ColumnWidth, RowHeight), StringFormat)
Next
'Draw player 2's o's
For Each SelectedCell In PlayerTwoSelectedCells
e.Graphics.DrawString("O", Me.Font, Brushes.Green, New Rectangle(SelectedCell.X * ColumnWidth, SelectedCell.Y * RowHeight, ColumnWidth, RowHeight), StringFormat)
Next
StringFormat.Dispose()
End Sub
Private Function IsWinner(ByVal playersCells As List(Of Point)) As Boolean
Dim X(2), Y(2) As Integer
Dim BackDiagonal, ForwardDiagonal As Integer
For Each Point As Point In playersCells
X(Point.X) += 1
Y(Point.Y) += 1
If (Point.X = Point.Y) Then BackDiagonal += 1
If (Point.X + Point.Y) = 2 Then ForwardDiagonal += 1
Next
'If forward or backward slash diagonal then winner
If BackDiagonal = 3 Or ForwardDiagonal = 3 Then Return True
'If horizontal or vertical all the same then winner
If X(0) = 3 OrElse X(1) = 3 OrElse X(2) = 3 Then Return True
If Y(0) = 3 OrElse Y(1) = 3 OrElse Y(2) = 3 Then Return True
'0,0 1,0 2,0
'0,1 1,1 2,1
'0,2 1,2 2,2
'A backward slash diagonal would have 3 points with
'x and y the same
'A forward slash diagonal would have 3 points with
'x + y = 2
End Function
Private Sub ResetGame()
PlayerOneSelectedCells.Clear()
PlayerTwoSelectedCells.Clear()
IsPlayerOne = True
Panel1.Invalidate()
End Sub
End ClassAnother version:
Public Class Form1
Dim buttons(2, 2) As System.Windows.Forms.Button
Dim PlayerOne As Boolean = True
Public Sub New()
' This call is required by the designer.
InitializeComponent()
' Add any initialization after the InitializeComponent() call.
Dim button As System.Windows.Forms.Button
Dim x, y As Integer
For r As Integer = 0 To 2
For c As Integer = 0 To 2
x = 10 + 50 * r
y = 10 + 50 * c
button = New System.Windows.Forms.Button
button.Size = New System.Drawing.Size(45, 45)
button.Location = New System.Drawing.Point(x, y)
button.Font = New System.Drawing.Font("MS Sans Serif", 20)
AddHandler button.Click, AddressOf ButtonClicked
buttons(r, c) = button
Me.Controls.Add(button)
Next
Next
ResetGame()
End Sub
Private Sub ResetGame()
For r As Integer = 0 To 2
For c As Integer = 0 To 2
buttons(r, c).Text = ""
buttons(r, c).Enabled = True
Next
Next
PlayerOne = True
End Sub
Private Sub ButtonClicked(ByVal sender As Object, ByVal e As System.EventArgs)
Dim button As System.Windows.Forms.Button = sender
button.Text = IIf(PlayerOne, "X", "O")
button.Enabled = False
PlayerOne = Not PlayerOne
CheckForWin()
End Sub
Private Sub CheckForWin()
Dim r, c As Integer
'check for three across
For r = 0 To 2
If buttons(r, 0).Text <> "" And buttons(r, 0).Text = buttons(r, 1).Text And buttons(r, 0).Text = buttons(r, 2).Text Then
MsgBox("win for " & buttons(r, 0).Text)
ResetGame()
Exit Sub
End If
Next
'check for three down
For c = 0 To 2
If buttons(0, c).Text <> "" And buttons(0, c).Text = buttons(1, c).Text And buttons(0, c).Text = buttons(2, c).Text Then
MsgBox("win for " & buttons(c, 0).Text)
ResetGame()
Exit Sub
End If
Next
'check for diagonals
If buttons(1, 1).Text <> "" Then
If buttons(0, 0).Text = buttons(1, 1).Text And buttons(0, 0).Text = buttons(2, 2).Text Then
MsgBox("win for " & buttons(1, 1).Text)
ResetGame()
Exit Sub
End If
If buttons(2, 0).Text = buttons(1, 1).Text And buttons(0, 2).Text = buttons(2, 0).Text Then
MsgBox("win for " & buttons(1, 1).Text)
ResetGame()
Exit Sub
End If
End If
End Sub
End ClassI suppose we should have asked before posting the code whether or not this game was for a school assignment in which case, hints or code fragments would have been more appropriate. Having said that I'll post one more (complete) version. If this was for an assignment then the damage is already done. If not then perhaps the following code will illustrate some simple techniques. In any case, I was really really bored today so I had to tinker with it.
The only control you have to add via the IDE is the label (lblPlayer) at the top of the form.
Public Class Form1
Dim buttons(2, 2) As System.Windows.Forms.Button '3x3 array of tic-tac-toe tiles
Dim PlayerOne As Boolean = True 'True=Player 1, False=Player 2
Public Sub New()
'This call is required by the designer.
InitializeComponent()
'Add any initialization after the InitializeComponent() call.
'create 3x3 array of tic-tac-toe tiles - tiles are 45x45 and range in position
'from 10,10 (upper left) to 110,110 (lower right). The advantage of creating the
'controls at run time is you can access the tiles in an array and use the same
'handler for all tiles. The disadvantage is you have to calculate the position
'of all the tiles yourself.
For row As Integer = 0 To 2
For col As Integer = 0 To 2
Dim x As Integer = 15 + 55 * row 'new tile x coordinate
Dim y As Integer = 50 + 55 * col 'new tile y coordinate
'create the next button
Dim button As New System.Windows.Forms.Button
button.Size = New System.Drawing.Size(50, 50)
button.Location = New System.Drawing.Point(x, y)
button.Font = New System.Drawing.Font("MS Sans Serif", 20)
'connect the new button to a handler for the click event
AddHandler button.Click, AddressOf ButtonClicked
'add the button to the array for ease of processing and add to the form
buttons(row, col) = button
Me.Controls.Add(button)
Next
Next
ResetGame()
End Sub
Private Sub ResetGame()
'clear X/O, enable all tiles and reset player to Player one
For r As Integer = 0 To 2
For c As Integer = 0 To 2
buttons(r, c).Text = ""
buttons(r, c).Enabled = True
Next
Next
PlayerOne = True
lblPlayer.Text = "Player X Turn"
End Sub
Private Sub ButtonClicked(ByVal sender As Object, ByVal e As System.EventArgs)
'When a button is clicked, set the visible text to X or O depending on the
'current player. Note that only buttons which have not yet been clicked are
'"clickable". After each click, check if we have a winner.
Dim button As System.Windows.Forms.Button = sender
button.Text = IIf(PlayerOne, "X", "O") 'set label depending on player
button.Enabled = False 'disable click on this button
PlayerOne = Not PlayerOne 'switch to next player
CheckForWin() 'do we have a winner
lblPlayer.Text = "Player " & IIf(PlayerOne, "X", "O") & " Turn"
End Sub
Private Sub CheckForWin()
'Check if we have XXX or OOO in any direction. Note that this Sub has several
'"Exit Subs" peppered throughout. Multiple exit points are generally frowned
'upon but if used sparingly, in certain circumstances, they can make the code
'much cleaner.
'check for three across or down
For i As Integer = 0 To 2
If Not buttons(i, 0).Enabled Then 'check across
If buttons(i, 0).Text = buttons(i, 1).Text And buttons(i, 0).Text = buttons(i, 2).Text Then
GameOver(buttons(i, 0).Text & " Wins")
Exit Sub
End If
End If
If Not buttons(0, i).Enabled Then 'check down
If buttons(0, i).Text = buttons(1, i).Text And buttons(0, i).Text = buttons(2, i).Text Then
GameOver(buttons(0, i).Text & " Wins")
Exit Sub
End If
End If
Next
'check for diagonals
If Not buttons(1, 1).Enabled Then
If buttons(0, 0).Text = buttons(1, 1).Text And buttons(0, 0).Text = buttons(2, 2).Text Then 'check \
GameOver(buttons(1, 1).Text & " Wins")
Exit Sub
End If
If buttons(2, 0).Text = buttons(1, 1).Text And buttons(0, 2).Text = buttons(2, 0).Text Then 'check /
GameOver(buttons(1, 1).Text & " Wins")
Exit Sub
End If
End If
'check for draw
For row As Integer = 0 To 2
For col As Integer = 0 To 2
If buttons(row, col).Enabled Then Exit Sub
Next
Next
GameOver("Nobody Wins")
End Sub
Private Sub GameOver(ByVal text As String)
MsgBox(text)
ResetGame()
End Sub
End ClassWe're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.