1 files changed, 311 insertions, 0 deletions
diff --git a/qtruby/rubylib/examples/qt-examples/tictac/tictac.rb b/qtruby/rubylib/examples/qt-examples/tictac/tictac.rb
new file mode 100644
index 00000000..04ab8b9d
--- /dev/null
+++ b/qtruby/rubylib/examples/qt-examples/tictac/tictac.rb
@@ -0,0 +1,311 @@
+require 'Qt'
+
+class TicTacButton < Qt::PushButton
+
+	attr_accessor :btype
+
+	Blank, Circle, Cross = 0, 1, 2
+
+	def initialize(p)
+		super(p)
+		@btype = Blank
+	end
+
+	def drawButtonLabel(p)
+		r = rect()
+		p.setPen( Qt::Pen.new( Qt::white,2 ) ) # set fat pen
+		if (@btype == Circle)
+			p.drawEllipse( r.left()+4, r.top()+4, r.width()-8, r.height()-8 )
+		elsif (@btype == Cross)			# draw cross
+			p.drawLine( r.topLeft()   +Qt::Point.new(4,4), r.bottomRight()-Qt::Point.new(4,4))
+			p.drawLine( r.bottomLeft()+Qt::Point.new(4,-4),r.topRight()   -Qt::Point.new(4,-4))
+		end
+		super(p)
+	   end
+end
+
+class TicTacGameBoard < Qt::Widget
+	signals 'finished()'
+	slots 'buttonClicked()'
+
+	Init, HumansTurn, HumanWon, ComputerWon, NobodyWon = 0, 1, 2, 3, 4
+
+	attr_accessor :state, :computer_starts
+
+	def initialize (n, parent)
+		super(parent)
+		@state = Init
+		@nBoard = n
+		n = n*n
+		@computer_starts = false
+		@buttons = Array.new(n)
+		@btArray = Array.new(n)
+
+		grid = Qt::GridLayout.new(self, n, n, 4)
+		p = Qt::Palette.new(Qt::blue)
+
+		for i in (0..n-1)
+			ttb = TicTacButton.new(self)
+			ttb.setPalette(p)
+			ttb.setEnabled(false)
+			connect(ttb, SIGNAL('clicked()'), self, SLOT('buttonClicked()'))
+			grid.addWidget(ttb, i % @nBoard, i / @nBoard)
+			@buttons[i] = ttb
+			@btArray[i] = TicTacButton::Blank
+		end
+	end
+
+	def newGame
+		@state = HumansTurn
+		for i in 0..(@nBoard*@nBoard)-1
+			@btArray[i] = TicTacButton::Blank
+		end
+		if @computer_starts == true
+			computerMove
+		else
+			updateButtons
+		end
+	end
+
+	def updateButtons
+		for i in 0..(@nBoard*@nBoard)-1
+			if @buttons[i].btype != @btArray[i]
+				@buttons[i].btype = @btArray[i]
+			end
+			if @buttons[i].btype == TicTacButton::Blank
+				@buttons[i].setEnabled(true)
+			else
+				@buttons[i].setEnabled(false)
+			end
+			@buttons[i].repaint
+		end
+	end
+
+	def checkBoard
+		t = 0
+		row = 0
+		col = 0
+		won = false
+
+		# check horizontal
+		for row in 0..@nBoard-1
+			if won == true
+				break
+			end
+			t = @btArray[row*@nBoard]
+			if (t == TicTacButton::Blank)
+				next
+			end
+			col = 1
+			while ( (col < @nBoard) && (@btArray[row*@nBoard+col] == t) )
+				col += 1
+			end
+			if (col == @nBoard)
+				won = true
+			end
+		end
+
+		# check vertical
+		for col in 0..@nBoard-1
+			if won == true
+				break
+			end
+			t = @btArray[col]
+			if (t == TicTacButton::Blank)
+				next
+			end
+			row = 1
+			while ( (row < @nBoard) && (@btArray[row*@nBoard+col] == t) )
+				row += 1
+			end
+			if (row == @nBoard)
+				won = true
+			end
+		end
+
+		# check diagonal top left to bottom right
+		if (won == false)
+			t = @btArray[0]
+			if (t != TicTacButton::Blank)
+				i = 1;
+				while (i<@nBoard && (@btArray[i*@nBoard+i] == t))
+					i += 1
+				end
+				if (i == @nBoard)
+					won = true
+				end
+			end
+		end
+
+		# check diagonal bottom left to top right
+		if (won == false)
+			j = @nBoard-1
+			i = 0;
+			t = @btArray[i+j*@nBoard];
+			if (t != TicTacButton::Blank)
+				i += 1
+				j -= 1
+				while ( (i<@nBoard) && (@btArray[i+j*@nBoard] == t) )
+					i += 1
+					j -= 1
+				end
+				if (i == @nBoard)
+					won = true
+				end
+			end
+		end
+
+		if (won == false)
+			# no winner
+			t = 0
+		end
+
+		t
+	end
+
+	def computerMove
+		numButtons = @nBoard*@nBoard
+		altv = Array.new
+		stopHuman = -1
+		i = 0
+
+		for i in 0..numButtons-1				# try all positions
+			if @btArray[i] != TicTacButton::Blank		# already a piece there
+				next
+			end
+
+			@btArray[i] = TicTacButton::Cross		# test if computer wins
+			if (checkBoard == @btArray[i])			# computer will win
+				@state = ComputerWon
+				stopHuman = -1
+				break
+			end
+
+			@btArray[i] = TicTacButton::Circle		# test if human wins
+			if (checkBoard == @btArray[i])			# oops...
+				stopHuman = i				# remember position
+				@btArray[i] = TicTacButton::Blank	# restore button
+				next					# computer still might win
+			end
+			@btArray[i] = TicTacButton::Blank;		# restore button
+			altv.push(i)					# remember alternative
+		end
+
+		if (stopHuman >= 0)					# must stop human from winning
+			@btArray[stopHuman] = TicTacButton::Cross
+		elsif (i == numButtons-1)				# tried all alternatives
+			if (altv.size > 0)				# set random piece
+				@btArray[altv[rand(altv.size)]] = TicTacButton::Cross
+			end
+			if ((altv.size-1) == 0)				# no more blanks
+				@state = NobodyWon
+				emit finished()
+			end
+		end
+		updateButtons						# update buttons
+	end
+
+	def buttonClicked
+		unless @state == HumansTurn
+			return
+		end
+
+		at = nil
+		for i in 0..@buttons.size
+			if @buttons[i].object_id == sender.object_id
+				at = i
+				break
+			end
+		end
+		if @btArray[at] == TicTacButton::Blank
+			@btArray[at] = TicTacButton::Circle
+			updateButtons
+			
+			if (checkBoard == 0)
+				computerMove
+			end
+			s = checkBoard
+			if (s != 0)
+				if (s == TicTacButton::Circle)
+					@state = HumanWon
+				else
+					@state = ComputerWon
+				end
+				emit finished()
+			end
+		end
+	end
+
+end
+
+class TicTacToe < Qt::Widget
+	slots 'newGameClicked()', 'gameOver()'
+
+	def initialize (boardSize)
+		super()
+
+		l = Qt::VBoxLayout.new(self, 6)
+
+		@state_msg = [
+			'Click Play to start',
+			'Make your move',
+			'You won!',
+			'Computer won!',
+			'It\'s a draw']
+		
+		# Create a message label
+		@message = Qt::Label.new(self)
+		@message.setFrameStyle((Qt::Frame.WinPanel|Qt::Frame.Sunken))
+		@message.setAlignment(Qt::AlignCenter)
+		l.addWidget(@message)
+
+		# Create the game board and connect the signal finished()
+		# to this/self gameOver() slot
+		@board = TicTacGameBoard.new(boardSize, self)
+		connect(@board, SIGNAL('finished()'), self, SLOT('gameOver()'));
+		l.addWidget(@board)
+
+		# Create a horizontal frame line
+		line = Qt::Frame.new(self)
+		line.setFrameStyle(Qt::Frame.HLine|Qt::Frame.Sunken)
+		l.addWidget(line)
+
+		# Create the combo box for deciding who should start
+		# and connect its clicked() signals to the buttonClicked() slot
+		@whoStarts = Qt::ComboBox.new(self)
+		@whoStarts.insertItem('Computer starts')
+		@whoStarts.insertItem('Human starts')
+		l.addWidget(@whoStarts);
+
+		# Create the push buttons and connect their signals to the right slots
+		@newGame = Qt::PushButton.new('Play!', self)
+		connect(@newGame, SIGNAL('clicked()'), self, SLOT('newGameClicked()'))
+		@quit = Qt::PushButton.new('Quit', self)
+		connect(@quit, SIGNAL('clicked()'), $qApp, SLOT('quit()'))
+		b = Qt::HBoxLayout.new
+		l.addLayout(b)
+		b.addWidget(@newGame)
+		b.addWidget(@quit)
+
+		newState()
+	end
+
+	def newState
+		@message.setText(@state_msg[@board.state])
+	end
+
+	def newGameClicked
+		if @whoStarts.currentItem == 0
+			@board.computer_starts = true
+		else
+			@board.computer_starts = false
+		end
+		@board.newGame()
+		newState()
+	end
+
+	def gameOver
+		# Update text box
+		newState()
+	end
+end