Class: Chingu::SimpleMenu

Inherits:
BasicGameObject show all
Includes:
Helpers::InputClient
Defined in:
lib/chingu/simple_menu.rb

Instance Attribute Summary collapse

Attributes inherited from BasicGameObject

#options, #parent, #paused

Instance Method Summary collapse

Methods included from Helpers::InputClient

#add_inputs, #holding?, #holding_all?, #holding_any?, #input, #input=, #on_input

Methods inherited from BasicGameObject

all, create, #destroy, destroy_all, destroy_if, #draw_trait, each, each_with_index, #filename, initialize_trait, #pause!, #paused?, select, #setup, #setup_trait, size, trait, #trait_options, traits, #unpause!, #update, #update_trait

Methods included from Helpers::ClassInheritableAccessor

included

Constructor Details

#initialize(options = {}) ⇒ SimpleMenu

Returns a new instance of SimpleMenu.



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# File 'lib/chingu/simple_menu.rb', line 30

def initialize(options = {})
  super
  
  @menu_items = options.delete(:menu_items)     # || {"Exit" => :exit}
  @x = options.delete(:x) || $window.width/2
  @y = options.delete(:y) || 100
  @spacing = options.delete(:spacing) || 100
  @items = []
  @visible = true
  
  y = @spacing
  menu_items.each do |key, value|
    item = if key.is_a? String
      Text.new(key, options.dup)
    elsif key.is_a? Image
      GameObject.new(options.merge!(:image => key))
    elsif key.is_a? GameObject
      menu_item.options.merge!(options.dup)
      menu_item
    end
    
    item.options[:on_select] = method(:on_select)
    item.options[:on_deselect] = method(:on_deselect)
    item.options[:action] = value
    
    item.rotation_center = :center_center
    item.x = @x
    item.y = y
    y += item.height + @spacing
    @items << item
  end      
  @selected = options[:selected] || 0
  step(0)
  
  self.input = {:up => lambda{step(-1)}, :down => lambda{step(1)}, [:return, :space] => :select}
end

Instance Attribute Details

Returns the value of attribute menu_items.



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# File 'lib/chingu/simple_menu.rb', line 28

def menu_items
  @menu_items
end

#visible ⇒ Object

Returns the value of attribute visible.



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# File 'lib/chingu/simple_menu.rb', line 28

def visible
  @visible
end

Instance Method Details

#draw ⇒ Object 



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# File 'lib/chingu/simple_menu.rb', line 91

def draw
  @items.each { |item| item.draw }
end

#on_deselect(object) ⇒ Object 



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# File 'lib/chingu/simple_menu.rb', line 83

def on_deselect(object)
  object.color = Color::WHITE
end

#on_select(object) ⇒ Object 



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# File 'lib/chingu/simple_menu.rb', line 87

def on_select(object)
  object.color = Color::RED
end

#select ⇒ Object 



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# File 'lib/chingu/simple_menu.rb', line 75

def select
  dispatch_action(selected.options[:action], self.parent)
end

#selected ⇒ Object 



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# File 'lib/chingu/simple_menu.rb', line 79

def selected
  @items[@selected]
end

#step(value) ⇒ Object 



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# File 'lib/chingu/simple_menu.rb', line 67

def step(value)
  selected.options[:on_deselect].call(selected)
  @selected += value
  @selected = @items.count-1  if @selected < 0
  @selected = 0               if @selected == @items.count
  selected.options[:on_select].call(selected)
end