Class: ChessRB::Piece

Inherits:
Object
  • Object
show all
Defined in:
lib/chess_rb/piece.rb

Constant Summary collapse

E = 
0
WP = 
1
WN = 
2
WLB = 
3
WDB = 
4
WR = 
5
WQ = 
6
WK = 
7
BP = 
11
BN = 
12
BLB = 
13
BDB = 
14
BR = 
15
BQ = 
16
BK = 
17

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(code) ⇒ Piece

Returns a new instance of Piece.



8
9
10
11
12
 
# File 'lib/chess_rb/piece.rb', line 8

def initialize(code)
  @code = code
  @desc = ChessRB::Piece.constants.select{
    |v| ChessRB::Piece.const_get(v) == code }[0].to_s
end

Instance Attribute Details

#code ⇒ Object (readonly)

Returns the value of attribute code.



6
7
8
 
# File 'lib/chess_rb/piece.rb', line 6

def code
  @code
end

#desc ⇒ Object (readonly)

Returns the value of attribute desc.



6
7
8
 
# File 'lib/chess_rb/piece.rb', line 6

def desc
  @desc
end

Instance Method Details

#color ⇒ Object 



18
19
20
 
# File 'lib/chess_rb/piece.rb', line 18

def color
  self.desc[0]
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


22
23
24
 
# File 'lib/chess_rb/piece.rb', line 22

def empty?
  return @code == 0
end

#to_s(d) ⇒ Object 



26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
 
# File 'lib/chess_rb/piece.rb', line 26

def to_s(d)
  case @code
  when WP
    d ? "♟" : "♙"
  when WN
    d ? "♞" : "♘"
  when WLB
    d ? "♝" : "♗"
  when WDB
    d ? "♝" : "♗"
  when WR
    d ? "♜" : "♖"
  when WQ
    d ? "♛" : "♕"
  when WK
    d ? "♚" : "♔"
  when BP
    d ? "♙" : "♟"
  when BN
    d ? "♘" : "♞"
  when BLB
    d ? "♗" : "♝"
  when BDB
    d ? "♗" : "♝"
  when BR
    d ? "♖" : "♜"
  when BQ
    d ? "♕" : "♛"
  when BK
    d ? "♔" : "♚"
  end
end

#type ⇒ Object 



14
15
16
 
# File 'lib/chess_rb/piece.rb', line 14

def type
  self.desc[-1, 1]
end