Class: NoughtsAndCrosses

Inherits:
Game
  • Object
show all
Defined in:
lib/noughts_and_crosses.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Game

#display, #reload_position

Constructor Details

#initialize ⇒ NoughtsAndCrosses

Returns a new instance of NoughtsAndCrosses.



6
7
8
9
10
 
# File 'lib/noughts_and_crosses.rb', line 6

def initialize
  @position = {:A1 => 0, :B1 => 0, :C1 => 0, :A2 => 0, :B2  => 0, :C2 => 0, :A3 => 0, :B3 => 0, :C3 => 0}
  @next_player = 0
  @move_list = []
end

Instance Attribute Details

#move_list ⇒ Object (readonly)

Returns the value of attribute move_list.



4
5
6
 
# File 'lib/noughts_and_crosses.rb', line 4

def move_list
  @move_list
end

#next_player ⇒ Object (readonly)

Returns the value of attribute next_player.



4
5
6
 
# File 'lib/noughts_and_crosses.rb', line 4

def next_player
  @next_player
end

#quiet ⇒ Object

Returns the value of attribute quiet.



5
6
7
 
# File 'lib/noughts_and_crosses.rb', line 5

def quiet
  @quiet
end

#verbose ⇒ Object

Returns the value of attribute verbose.



5
6
7
 
# File 'lib/noughts_and_crosses.rb', line 5

def verbose
  @verbose
end

#winner ⇒ Object (readonly)

Returns the value of attribute winner.



4
5
6
 
# File 'lib/noughts_and_crosses.rb', line 4

def winner
  @winner
end

Instance Method Details

#current_position ⇒ Object 



93
94
95
 
# File 'lib/noughts_and_crosses.rb', line 93

def current_position
  return @position
end

#drawn? ⇒ Boolean

Returns:

  • (Boolean) 


132
133
134
135
136
137
138
139
140
 
# File 'lib/noughts_and_crosses.rb', line 132

def drawn?
  unless legal_moves.count == 0
    return false
  end
  if won?
    return false
  end
  true
end

#legal_moves ⇒ Object 



39
40
41
42
43
44
45
46
47
 
# File 'lib/noughts_and_crosses.rb', line 39

def legal_moves
  legal_moves = []
  @position.each do |move|
    if move[1] == 0
      legal_moves << move[0].to_s
    end
  end
  legal_moves
end

#name ⇒ Object 



12
13
14
 
# File 'lib/noughts_and_crosses.rb', line 12

def name
  "NoughtsAndCrosses"
end

#play_move(player, move) ⇒ Object 



49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
 
# File 'lib/noughts_and_crosses.rb', line 49

def play_move(player, move)
  sym_move = move.to_sym
  unless player == @next_player
    display "not player #{player}'s turn"
    return false
  end
  unless @position[sym_move] == 0
    display "illegal move by player #{player}"
    return false
  end
  if won?
    display "player #{winner} has already won"
    return false
  elsif drawn?
    display "game was drawn"
    return false
  end

  @move_list << [player,move]
  
  if player == 1
    @position[sym_move] = 1
  else
    @position[sym_move] = -1
  end
  if won?
    display "player #{player} wins!"
    @winner = player
  elsif drawn?
    display "game drawn"
  end
  
  if @next_player == 1
    @next_player = 0
  else
    @next_player = 1
  end
  if @verbose
    display show_board
    display @position
  end
  true      
end

#show_board ⇒ Object 



16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
 
# File 'lib/noughts_and_crosses.rb', line 16

def show_board
  board = " - - - \n"
  i = 0
  @position.each do |move|
    i += 1   
    board += "|"
    if move[1] == 0
      board += " "
    elsif move[1] == 1
      board += "X"
    else
      board += "O"
    end  

    if i == 3
      board += "|\n _ _ _\n"
      i = 0
    end   

  end
  board
end

#won? ⇒ Boolean

Returns:

  • (Boolean) 


97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
 
# File 'lib/noughts_and_crosses.rb', line 97

def won?
  if @position[:A1] != 0
    if @position[:A1] == @position[:A2] && @position[:A2] == @position[:A3]
      return true
    elsif @position[:A1] == @position[:B2] && @position[:B2] == @position[:C3]
      return true
    elsif @position[:A1] == @position[:B1] && @position[:B1] == @position[:C1]
      return true
    end
  end
  if @position[:B1] != 0
    if @position[:B1] == @position[:B2] && @position[:B2] == @position[:B3]
      return true
    end
  end
  if @position[:C1] != 0
    if @position[:C1] == @position[:C2] && @position[:C2] == @position[:C3]
      return true
    elsif @position[:C1] == @position[:B2] && @position[:B2] == @position[:A3]
      return true
    end
  end
  if @position[:A2] != 0
    if @position[:A2] == @position[:B2] && @position[:B2] == @position[:C2]
      return true
    end
  end
  if @position[:A3] != 0
    if @position[:A3] == @position[:B3] && @position[:B3] == @position[:C3]
      return true
    end
  end
  false
end