Class: GamesParadise::TicTacToe::Board

Inherits:
Object
  • Object
show all
Defined in:
lib/games_paradise/gui/gosu/tic_tac_toe/board.rb

Constant Summary collapse

WIN_CONDITIONS =
#

WIN_CONDITIONS

#
[
  [ [0,0], [1,0], [2,0] ], # top row
  [ [0,1], [1,1], [2,1] ], # middle row
  [ [0,2], [1,2], [2,2] ], # bottom row
  [ [0,0], [0,1], [0,2] ], # left column
  [ [1,0], [1,1], [1,2] ], # middle column
  [ [2,0], [2,1], [2,2] ], # right column
  [ [0,0], [1,1], [2,2] ], # diagonal top left
  [ [2,0], [1,1], [0,2] ], # diagonal bottom left
]

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(w, h) ⇒ Board

#

initialize

#


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# File 'lib/games_paradise/gui/gosu/tic_tac_toe/board.rb', line 32

def initialize(w, h)
  @w = w
  @h = h
  reset
end

Instance Attribute Details

#margin ⇒ Object (readonly)

Returns the value of attribute margin.



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# File 'lib/games_paradise/gui/gosu/tic_tac_toe/board.rb', line 13

def margin
  @margin
end

Instance Method Details

#bottom ⇒ Object

#

bottom

#


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# File 'lib/games_paradise/gui/gosu/tic_tac_toe/board.rb', line 244

def bottom
  @h - @margin
end

#bottom_box_y ⇒ Object

#

bottom_box_y

#


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# File 'lib/games_paradise/gui/gosu/tic_tac_toe/board.rb', line 159

def bottom_box_y
  square_at(0, 2).window_coordinates[1]
end

#check_win? ⇒ Boolean

#

check_win?

#

Returns:

  • (Boolean) 


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# File 'lib/games_paradise/gui/gosu/tic_tac_toe/board.rb', line 73

def check_win?
  winning_squares = WIN_CONDITIONS.select {|wc|
    squares = wc.map {|coords| square_at(*coords)}
    letters = squares.map(&:letter)
    !letters.any?(&:nil?) && letters.uniq.length == 1
  }.first

  if winning_squares
    squares = winning_squares.map {|c| square_at(*c) }
    @strike_points = [
      squares.first.center_point,
      squares.last.center_point
    ].flatten
    true
  else
    false
  end
end

#coords_from_point(x, y) ⇒ Object

#

coords_from_point

#


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# File 'lib/games_paradise/gui/gosu/tic_tac_toe/board.rb', line 179

def coords_from_point(x, y)
  pct_across_x = x/@w
  cx = case
       when pct_across_x < 0.3
         0
       when pct_across_x > 0.6
         2
       else
         1
       end

  pct_across_y = y / @h
  cy = case
       when pct_across_y < 0.3
         0
       when pct_across_y > 0.6
         2
       else
         1
       end
  [cx, cy]
end

#draw ⇒ Object

#

draw

#


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# File 'lib/games_paradise/gui/gosu/tic_tac_toe/board.rb', line 52

def draw
  draw_grid
  @squares.each(&:draw)
  draw_winning_strike
end

#draw_grid ⇒ Object

#

draw_grid

#


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# File 'lib/games_paradise/gui/gosu/tic_tac_toe/board.rb', line 102

def draw_grid
  x1 = middle_box_x
  x2 = right_box_x
  y1 = middle_box_y
  y2 = bottom_box_y

  Gosu.draw_line x1, top, @color, x1, bottom, @color
  Gosu.draw_line x2, top, @color, x2, bottom, @color
  Gosu.draw_line left, y1, @color, right, y1, @color
  Gosu.draw_line left, y2, @color, right, y2, @color
end

#draw_winning_strike ⇒ Object

#

draw_winning_strike

#


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# File 'lib/games_paradise/gui/gosu/tic_tac_toe/board.rb', line 61

def draw_winning_strike
  return unless @strike_points
  x1, y1, x2, y2 = @strike_points
  if x1 && x2 && y1 && y2
    c = Gosu::Color::RED
    Gosu.draw_line(x1, y1, c, x2, y2, c)
  end
end

#full? ⇒ Boolean

#

full?

#

Returns:

  • (Boolean) 


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# File 'lib/games_paradise/gui/gosu/tic_tac_toe/board.rb', line 95

def full?
  @squares.all?(&:occupied?)
end

#generate_board ⇒ Object

#

generate_board

#


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# File 'lib/games_paradise/gui/gosu/tic_tac_toe/board.rb', line 166

def generate_board
  9.times.map { |i|
    bx = i % 3
    by = i.div(3)
    wx = bx * square_size + margin
    wy = by * square_size + margin
    Square.new([bx, by], [wx, wy], square_size)
  }
end

#left ⇒ Object

#

left

#


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# File 'lib/games_paradise/gui/gosu/tic_tac_toe/board.rb', line 230

def left
  @margin
end

#left_box_x ⇒ Object

#

left_box_x

#


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# File 'lib/games_paradise/gui/gosu/tic_tac_toe/board.rb', line 124

def left_box_x
  @margin
end

#mark_letter(letter, x, y) ⇒ Object

#

mark_letter

#


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# File 'lib/games_paradise/gui/gosu/tic_tac_toe/board.rb', line 205

def mark_letter(letter, x, y)
  coords = coords_from_point(x, y)
  cx = coords[0]
  cy = coords[1]
  sq = square_at(cx, cy)
  if sq.occupied?
    false
  else
    sq.mark_letter(letter)
    true
  end
end

#middle_box_x ⇒ Object

#

middle_box_x

#


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# File 'lib/games_paradise/gui/gosu/tic_tac_toe/board.rb', line 131

def middle_box_x
  square_at(1, 0).window_coordinates[0]
end

#middle_box_y ⇒ Object

#

middle_box_y

#


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# File 'lib/games_paradise/gui/gosu/tic_tac_toe/board.rb', line 152

def middle_box_y
  square_at(0, 1).window_coordinates[1]
end

#reset ⇒ Object Also known as: clear

#

reset

#


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# File 'lib/games_paradise/gui/gosu/tic_tac_toe/board.rb', line 41

def reset
  @margin = 40
  @color = Gosu::Color.argb(0xff_666666)
  @font = Gosu::Font.new(100)
  @squares = generate_board
  @strike_points = nil
end

#right ⇒ Object

#

right

#


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# File 'lib/games_paradise/gui/gosu/tic_tac_toe/board.rb', line 251

def right
  @w - @margin
end

#right_box_x ⇒ Object

#

right_box_x

#


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# File 'lib/games_paradise/gui/gosu/tic_tac_toe/board.rb', line 138

def right_box_x
  square_at(2, 0).window_coordinates[0]
end

#square_at(x, y) ⇒ Object

#

square_at

#


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# File 'lib/games_paradise/gui/gosu/tic_tac_toe/board.rb', line 221

def square_at(x, y)
  @squares.select {|entry|
    entry.board_coordinates == [x,y]
  }.first
end

#square_size ⇒ Object

#

square_size

#


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# File 'lib/games_paradise/gui/gosu/tic_tac_toe/board.rb', line 117

def square_size
  (@w - @margin * 2) / 3
end

#top ⇒ Object

#

top

#


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# File 'lib/games_paradise/gui/gosu/tic_tac_toe/board.rb', line 237

def top
  @margin
end

#top_box_y ⇒ Object

#

top_box_y

#


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# File 'lib/games_paradise/gui/gosu/tic_tac_toe/board.rb', line 145

def top_box_y
  @margin
end