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+#!/usr/local/bin/ruby
+#----------------------> pretty simple othello game <-----------------------
+# othello.rb
+#
+# version 0.3
+# maeda shugo (shuto@po.aianet.ne.jp)
+#---------------------------------------------------------------------------
+
+# Sep. 17, 1997 modified by Y. Shigehiro for tcltk library
+# maeda shugo (shugo@po.aianet.ne.jp) 氏による
+# (ruby/tk で書かれていた) ruby のサンプルプログラム
+# http://www.aianet.or.jp/~shugo/ruby/othello.rb.gz
+# を tcltk ライブラリを使うように, 機械的に変更してみました.
+#
+# なるべくオリジナルと同じになるようにしてあります.
+
+require "observer"
+require "tcltk"
+$ip = TclTkInterpreter.new()
+$root = $ip.rootwidget()
+$button, $canvas, $checkbutton, $frame, $label, $pack, $update, $wm =
+ $ip.commands().values_at(
+ "button", "canvas", "checkbutton", "frame", "label", "pack", "update", "wm")
+
+class Othello
+
+ EMPTY = 0
+ BLACK = 1
+ WHITE = - BLACK
+
+ attr :in_com_turn
+ attr :game_over
+
+ class Board
+
+ include Observable
+
+ DIRECTIONS = [
+ [-1, -1], [-1, 0], [-1, 1],
+ [ 0, -1], [ 0, 1],
+ [ 1, -1], [ 1, 0], [ 1, 1]
+ ]
+
+ attr :com_disk, TRUE
+
+ def initialize(othello)
+ @othello = othello
+ reset
+ end
+
+ def notify_observers(*arg)
+ if @observer_peers != nil
+ super(*arg)
+ end
+ end
+
+ def reset
+ @data = [
+ [EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY],
+ [EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY],
+ [EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY],
+ [EMPTY, EMPTY, EMPTY, WHITE, BLACK, EMPTY, EMPTY, EMPTY],
+ [EMPTY, EMPTY, EMPTY, BLACK, WHITE, EMPTY, EMPTY, EMPTY],
+ [EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY],
+ [EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY],
+ [EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY]
+ ]
+ changed
+ notify_observers
+ end
+
+ def man_disk
+ return - @com_disk
+ end
+
+ def other_disk(disk)
+ return - disk
+ end
+
+ def get_disk(row, col)
+ return @data[row][col]
+ end
+
+ def reverse_to(row, col, my_disk, dir_y, dir_x)
+ y = row
+ x = col
+ begin
+ y += dir_y
+ x += dir_x
+ if y < 0 || x < 0 || y > 7 || x > 7 ||
+ @data[y][x] == EMPTY
+ return
+ end
+ end until @data[y][x] == my_disk
+ begin
+ @data[y][x] = my_disk
+ changed
+ notify_observers(y, x)
+ y -= dir_y
+ x -= dir_x
+ end until y == row && x == col
+ end
+
+ def put_disk(row, col, disk)
+ @data[row][col] = disk
+ changed
+ notify_observers(row, col)
+ DIRECTIONS.each do |dir|
+ reverse_to(row, col, disk, *dir)
+ end
+ end
+
+ def count_disk(disk)
+ num = 0
+ @data.each do |rows|
+ rows.each do |d|
+ if d == disk
+ num += 1
+ end
+ end
+ end
+ return num
+ end
+
+ def count_point_to(row, col, my_disk, dir_y, dir_x)
+ return 0 if @data[row][col] != EMPTY
+ count = 0
+ loop do
+ row += dir_y
+ col += dir_x
+ break if row < 0 || col < 0 || row > 7 || col > 7
+ case @data[row][col]
+ when my_disk
+ return count
+ when other_disk(my_disk)
+ count += 1
+ when EMPTY
+ break
+ end
+ end
+ return 0
+ end
+
+ def count_point(row, col, my_disk)
+ count = 0
+ DIRECTIONS.each do |dir|
+ count += count_point_to(row, col, my_disk, *dir)
+ end
+ return count
+ end
+
+ def corner?(row, col)
+ return (row == 0 && col == 0) ||
+ (row == 0 && col == 7) ||
+ (row == 7 && col == 0) ||
+ (row == 7 && col == 7)
+ end
+
+ def search(my_disk)
+ max = 0
+ max_row = nil
+ max_col = nil
+ for row in 0 .. 7
+ for col in 0 .. 7
+ buf = count_point(row, col, my_disk)
+ if (corner?(row, col) && buf > 0) || max < buf
+ max = buf
+ max_row = row
+ max_col = col
+ end
+ end
+ end
+ return max_row, max_col
+ end
+ end #--------------------------> class Board ends here
+
+ class BoardView < TclTkWidget
+
+ BACK_GROUND_COLOR = "DarkGreen"
+ HILIT_BG_COLOR = "green"
+ BORDER_COLOR = "black"
+ BLACK_COLOR = "black"
+ WHITE_COLOR = "white"
+ STOP_COLOR = "red"
+
+ attr :left
+ attr :top
+ attr :right
+ attr :bottom
+
+ class Square
+
+ attr :oval, TRUE
+ attr :row
+ attr :col
+
+ def initialize(view, row, col)
+ @view = view
+ @id = @view.e("create rectangle",
+ *(view.tk_rect(view.left + col,
+ view.top + row,
+ view.left + col + 1,
+ view.top + row + 1) \
+ << "-fill #{BACK_GROUND_COLOR}") )
+ @row = row
+ @col = col
+ @view.e("itemconfigure", @id,
+ "-width 0.5m -outline #{BORDER_COLOR}")
+ @view.e("bind", @id, "<Any-Enter>", TclTkCallback.new($ip, proc{
+ if @oval == nil
+ view.e("itemconfigure", @id, "-fill #{HILIT_BG_COLOR}")
+ end
+ }))
+ @view.e("bind", @id, "<Any-Leave>", TclTkCallback.new($ip, proc{
+ view.e("itemconfigure", @id, "-fill #{BACK_GROUND_COLOR}")
+ }))
+ @view.e("bind", @id, "<ButtonRelease-1>", TclTkCallback.new($ip,
+ proc{
+ view.click_square(self)
+ }))
+ end
+
+ def blink(color)
+ @view.e("itemconfigure", @id, "-fill #{color}")
+ $update.e()
+ sleep(0.1)
+ @view.e("itemconfigure", @id, "-fill #{BACK_GROUND_COLOR}")
+ end
+ end #-----------------------> class Square ends here
+
+ def initialize(othello, board)
+ super($ip, $root, $canvas)
+ @othello = othello
+ @board = board
+ @board.add_observer(self)
+
+ @squares = Array.new(8)
+ for i in 0 .. 7
+ @squares[i] = Array.new(8)
+ end
+ @left = 1
+ @top = 0.5
+ @right = @left + 8
+ @bottom = @top + 8
+
+ i = self.e("create rectangle", *tk_rect(@left, @top, @right, @bottom))
+ self.e("itemconfigure", i,
+ "-width 1m -outline #{BORDER_COLOR} -fill #{BACK_GROUND_COLOR}")
+
+ for row in 0 .. 7
+ for col in 0 .. 7
+ @squares[row][col] = Square.new(self, row, col)
+ end
+ end
+
+ update
+ end
+
+ def tk_rect(left, top, right, bottom)
+ return left.to_s + "c", top.to_s + "c",
+ right.to_s + "c", bottom.to_s + "c"
+ end
+
+ def clear
+ each_square do |square|
+ if square.oval != nil
+ self.e("delete", square.oval)
+ square.oval = nil
+ end
+ end
+ end
+
+ def draw_disk(row, col, disk)
+ if disk == EMPTY
+ if @squares[row][col].oval != nil
+ self.e("delete", @squares[row][col].oval)
+ @squares[row][col].oval = nil
+ end
+ return
+ end
+
+ $update.e()
+ sleep(0.05)
+ oval = @squares[row][col].oval
+ if oval == nil
+ oval = self.e("create oval", *tk_rect(@left + col + 0.2,
+ @top + row + 0.2,
+ @left + col + 0.8,
+ @top + row + 0.8))
+ @squares[row][col].oval = oval
+ end
+ case disk
+ when BLACK
+ color = BLACK_COLOR
+ when WHITE
+ color = WHITE_COLOR
+ else
+ fail format("Unknown disk type: %d", disk)
+ end
+ self.e("itemconfigure", oval, "-outline #{color} -fill #{color}")
+ end
+
+ def update(row = nil, col = nil)
+ if row && col
+ draw_disk(row, col, @board.get_disk(row, col))
+ else
+ each_square do |square|
+ draw_disk(square.row, square.col,
+ @board.get_disk(square.row, square.col))
+ end
+ end
+ @othello.show_point
+ end
+
+ def each_square
+ @squares.each do |rows|
+ rows.each do |square|
+ yield(square)
+ end
+ end
+ end
+
+ def click_square(square)
+ if @othello.in_com_turn || @othello.game_over ||
+ @board.count_point(square.row,
+ square.col,
+ @board.man_disk) == 0
+ square.blink(STOP_COLOR)
+ return
+ end
+ @board.put_disk(square.row, square.col, @board.man_disk)
+ @othello.com_turn
+ end
+
+ private :draw_disk
+ public :update
+ end #----------------------> class BoardView ends here
+
+ def initialize
+ @msg_label = TclTkWidget.new($ip, $root, $label)
+ $pack.e(@msg_label)
+
+ @board = Board.new(self)
+ @board_view = BoardView.new(self, @board)
+ #### added by Y. Shigehiro
+ ## board_view の大きさを設定する.
+ x1, y1, x2, y2 = @board_view.e("bbox all").split(/ /).collect{|i| i.to_f}
+ @board_view.e("configure -width", x2 - x1)
+ @board_view.e("configure -height", y2 - y1)
+ ## scrollregion を設定する.
+ @board_view.e("configure -scrollregion {", @board_view.e("bbox all"),
+ "}")
+ #### ここまで
+ $pack.e(@board_view, "-fill both -expand true")
+
+ panel = TclTkWidget.new($ip, $root, $frame)
+
+ @play_black = TclTkWidget.new($ip, panel, $checkbutton,
+ "-text {com is black} -command", TclTkCallback.new($ip, proc{
+ switch_side
+ }))
+ $pack.e(@play_black, "-side left")
+
+ quit = TclTkWidget.new($ip, panel, $button, "-text Quit -command",
+ TclTkCallback.new($ip, proc{
+ exit
+ }))
+ $pack.e(quit, "-side right -fill x")
+
+ reset = TclTkWidget.new($ip, panel, $button, "-text Reset -command",
+ TclTkCallback.new($ip, proc{
+ reset_game
+ }))
+ $pack.e(reset, "-side right -fill x")
+
+ $pack.e(panel, "-side bottom -fill x")
+
+# root = Tk.root
+ $wm.e("title", $root, "Othello")
+ $wm.e("iconname", $root, "Othello")
+
+ @board.com_disk = WHITE
+ @game_over = FALSE
+
+ TclTk.mainloop
+ end
+
+ def switch_side
+ if @in_com_turn
+ @play_black.e("toggle")
+ else
+ @board.com_disk = @board.man_disk
+ com_turn unless @game_over
+ end
+ end
+
+ def reset_game
+ if @board.com_disk == BLACK
+ @board.com_disk = WHITE
+ @play_black.e("toggle")
+ end
+ @board_view.clear
+ @board.reset
+ $wm.e("title", $root, "Othello")
+ @game_over = FALSE
+ end
+
+ def com_turn
+ @in_com_turn = TRUE
+ $update.e()
+ sleep(0.5)
+ begin
+ com_disk = @board.count_disk(@board.com_disk)
+ man_disk = @board.count_disk(@board.man_disk)
+ if @board.count_disk(EMPTY) == 0
+ if man_disk == com_disk
+ $wm.e("title", $root, "{Othello - Draw!}")
+ elsif man_disk > com_disk
+ $wm.e("title", $root, "{Othello - You Win!}")
+ else
+ $wm.e("title", $root, "{Othello - You Loose!}")
+ end
+ @game_over = TRUE
+ break
+ elsif com_disk == 0
+ $wm.e("title", $root, "{Othello - You Win!}")
+ @game_over = TRUE
+ break
+ elsif man_disk == 0
+ $wm.e("title", $root, "{Othello - You Loose!}")
+ @game_over = TRUE
+ break
+ end
+ row, col = @board.search(@board.com_disk)
+ break if row == nil || col == nil
+ @board.put_disk(row, col, @board.com_disk)
+ end while @board.search(@board.man_disk) == [nil, nil]
+ @in_com_turn = FALSE
+ end
+
+ def show_point
+ black = @board.count_disk(BLACK)
+ white = @board.count_disk(WHITE)
+ @msg_label.e("configure -text",
+ %Q/{#{format("BLACK: %.2d WHITE: %.2d", black, white)}}/)
+ end
+end #----------------------> class Othello ends here
+
+Othello.new
+
+#----------------------------------------------> othello.rb ends here