Class: Chingu::GameObjectList

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Defined in:
lib/chingu/game_object_list.rb

Overview

Manages a list of game objects An instance of GameObjectList is automaticly created as “game_objects” if using Chingu::Window

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ GameObjectList

Returns a new instance of GameObjectList.


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# File 'lib/chingu/game_object_list.rb', line 34

def initialize(options = {})
  @game_objects = options[:game_objects] || []
  @visible_game_objects = []
  @unpaused_game_objects = []
end

Instance Attribute Details

#unpaused_game_objects ⇒ Object (readonly)

Returns the value of attribute unpaused_game_objects


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# File 'lib/chingu/game_object_list.rb', line 32

def unpaused_game_objects
  @unpaused_game_objects
end

#visible_game_objects ⇒ Object (readonly)

Returns the value of attribute visible_game_objects


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# File 'lib/chingu/game_object_list.rb', line 32

def visible_game_objects
  @visible_game_objects
end

Instance Method Details

#add_game_object(object) ⇒ Object 


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# File 'lib/chingu/game_object_list.rb', line 72

def add_game_object(object)
  @game_objects.push(object)
  @visible_game_objects.push(object)  if object.respond_to?(:visible)  && object.visible
  @unpaused_game_objects.push(object) if object.respond_to?(:paused)   && !object.paused
end

#destroy_all ⇒ Object Also known as: clear, remove_all 


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# File 'lib/chingu/game_object_list.rb', line 53

def destroy_all
  @game_objects.each { |game_object| game_object.destroy }
end

#destroy_if ⇒ Object 


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# File 'lib/chingu/game_object_list.rb', line 84

def destroy_if
  @game_objects.select { |object| object.destroy if yield(object) }
end

#draw ⇒ Object 


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# File 'lib/chingu/game_object_list.rb', line 95

def draw
  @visible_game_objects.each { |go| go.draw_trait; go.draw; }
end

#draw_relative(x = 0, y = 0, zorder = 0, angle = 0, center_x = 0, center_y = 0, factor_x = 0, factor_y = 0) ⇒ Object 


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# File 'lib/chingu/game_object_list.rb', line 102

def draw_relative(x=0, y=0, zorder=0, angle=0, center_x=0, center_y=0, factor_x=0, factor_y=0)
  @visible_game_objects.each do |object| 
    object.draw_trait
    object.draw_relative(x, y, zorder, angle, center_x, center_y, factor_x, factor_y)
  end
end

#each ⇒ Object 


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# File 'lib/chingu/game_object_list.rb', line 110

def each
  @game_objects.dup.each { |object| yield object }
end

#each_with_index ⇒ Object 


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# File 'lib/chingu/game_object_list.rb', line 114

def each_with_index
  @game_objects.dup.each_with_index { |object, index| yield object, index }
end

#force_draw ⇒ Object 


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# File 'lib/chingu/game_object_list.rb', line 98

def force_draw
  @game_objects.each { |go| go.draw_trait; go.draw }
end

#force_update ⇒ Object 


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

def force_update
  @game_objects.each { |go| go.update_trait; go.update; }
end

#hide! ⇒ Object Also known as: hide

Disable automatic calling of draw and draw_trait each game loop for all game objects


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# File 'lib/chingu/game_object_list.rb', line 145

def hide!
  @game_objects.each { |object| object.hide! }
end

#hide_game_object(object) ⇒ Object 


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# File 'lib/chingu/game_object_list.rb', line 62

def hide_game_object(object)
  @visible_game_objects.delete(object)
end

#map ⇒ Object 


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# File 'lib/chingu/game_object_list.rb', line 122

def map
  @game_objects.map { |object| yield object }
end

#of_class(klass) ⇒ Object 


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# File 'lib/chingu/game_object_list.rb', line 49

def of_class(klass)
  @game_objects.select { |game_object| game_object.is_a? klass }
end

#pause! ⇒ Object Also known as: pause

Disable automatic calling of update() and update_trait() each game loop for all game objects


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# File 'lib/chingu/game_object_list.rb', line 129

def pause!
  @game_objects.each { |object| object.pause! }
end

#pause_game_object(object) ⇒ Object 


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# File 'lib/chingu/game_object_list.rb', line 65

def pause_game_object(object)
  @unpaused_game_objects.delete(object)
end

#remove_game_object(object) ⇒ Object 


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# File 'lib/chingu/game_object_list.rb', line 78

def remove_game_object(object)
  @game_objects.delete(object)
  @visible_game_objects.delete(object)
  @unpaused_game_objects.delete(object)
end

#select ⇒ Object 


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# File 'lib/chingu/game_object_list.rb', line 118

def select
  @game_objects.dup.select { |object| yield object }
end

#show! ⇒ Object Also known as: show

Enable automatic calling of draw and draw_trait each game loop for all game objects


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# File 'lib/chingu/game_object_list.rb', line 153

def show!
  @game_objects.each { |object| object.show! }
end

#show_game_object(object) ⇒ Object 


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# File 'lib/chingu/game_object_list.rb', line 59

def show_game_object(object)
  @visible_game_objects.push(object)
end

#to_s ⇒ Object 


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# File 'lib/chingu/game_object_list.rb', line 45

def to_s
  "#{@game_objects.size} game objects."
end

#unpause! ⇒ Object Also known as: unpause

Enable automatic calling of update() and update_trait() each game loop for all game objects


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# File 'lib/chingu/game_object_list.rb', line 137

def unpause!
  @game_objects.each { |object| object.unpause! }
end

#unpause_game_object(object) ⇒ Object 


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# File 'lib/chingu/game_object_list.rb', line 68

def unpause_game_object(object)
  @unpaused_game_objects.push(object)
end

#update ⇒ Object 


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# File 'lib/chingu/game_object_list.rb', line 88

def update
  @unpaused_game_objects.each { |go| go.update_trait; go.update; }
end