Class: Difficulty

Inherits:
MenuItem show all
Defined in:
lib/menuitem.rb

Constant Summary collapse

MAX_DIFFICULTY = 
10

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from MenuItem

#draw, #on_enter, #select, #unselect

Constructor Details

#initialize(x, y, window) ⇒ Difficulty 



79
80
81
82
83
 
# File 'lib/menuitem.rb', line 79

def initialize(x, y, window)
  super(x, y, window)
  @difficulty = 0
  update_text
end

Instance Attribute Details

#difficulty ⇒ Object (readonly)

Returns the value of attribute difficulty.



77
78
79
 
# File 'lib/menuitem.rb', line 77

def difficulty
  @difficulty
end

Instance Method Details

#button_down(id) ⇒ Object 



85
86
87
88
89
90
91
92
93
94
 
# File 'lib/menuitem.rb', line 85

def button_down(id)
  case id
  when Gosu::KB_LEFT
    change_difficulty(-1)
  when Gosu::KB_RIGHT
    change_difficulty(1)
  else
    super
  end
end

#change_difficulty(direction) ⇒ Object 



96
97
98
99
100
101
102
103
 
# File 'lib/menuitem.rb', line 96

def change_difficulty(direction)
  if direction.positive?
    @difficulty += 1 if @difficulty < MAX_DIFFICULTY
  elsif @difficulty.positive?
    @difficulty -= 1
  end
  update_text
end

#update_text ⇒ Object 



105
106
107
 
# File 'lib/menuitem.rb', line 105

def update_text
  @text = "Difficulty: #{@difficulty.zero? ? 'Dynamic' : @difficulty}"
end