Module: Chingu::Helpers::GameObject

Included in:
Console, GameState, Window
Defined in:
lib/chingu/helpers/game_object.rb

Overview

Convenience-methods for classes that hold game objects Mixed into Chingu::Window and Chingu::GameState

Instance Method Summary collapse

Instance Method Details

#add_game_object(object) ⇒ Object 



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# File 'lib/chingu/helpers/game_object.rb', line 31

def add_game_object(object)
  @game_objects.add_game_object(object)
end

#game_objects ⇒ Object 



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# File 'lib/chingu/helpers/game_object.rb', line 39

def game_objects
  @game_objects
end

#game_objects_of_class(klass) ⇒ Object

Fetch game objects of a certain type/class



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# File 'lib/chingu/helpers/game_object.rb', line 60

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

#hide_game_object(object) ⇒ Object 



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# File 'lib/chingu/helpers/game_object.rb', line 46

def hide_game_object(object)
  @game_objects.hide_game_object(object)
end

#load_game_objects(options = {}) ⇒ Object

Creates game objects from a Chingu-spezed game objects file (created with game state 'Edit')



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# File 'lib/chingu/helpers/game_object.rb', line 67

def load_game_objects(options = {})
  file = options[:file] || self.filename + ".yml"
  debug = options[:debug]
  except = Array(options[:except]) || []
  
  require 'yaml'
  
  puts "* Loading game objects from #{file}" if debug
  if File.exists?(file)
    objects = YAML.load_file(file)
    objects.each do |object|
      object.each_pair do |klassname, attributes|
        begin
          klass = Kernel::const_get(klassname)
          unless klass.class == "GameObject" && !except.include?(klass)
            puts "Creating #{klassname.to_s}: #{attributes.to_s}" if debug
            object = klass.create(attributes)
            object.options[:created_with_editor] = true if object.options
          end
        rescue
          puts "Couldn't create class '#{klassname}'"
        end
      end
    end
  end
end

#pause_game_object(object) ⇒ Object 



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# File 'lib/chingu/helpers/game_object.rb', line 49

def pause_game_object(object)
  @game_objects.pause_game_object(object)
end

#remove_game_object(object) ⇒ Object 



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# File 'lib/chingu/helpers/game_object.rb', line 35

def remove_game_object(object)
  @game_objects.remove_game_object(object)
end

#save_game_objects(options = {}) ⇒ Object

Save given game_objects to a file. Hashoptions

:file - a String, name of file to write to, default is current game_state class name. :game_objects - an Array, game objects to save :classes - an Array, save only game objects of theese classes

NOTE: To save a color do: :color => game_object.color.argb



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# File 'lib/chingu/helpers/game_object.rb', line 103

def save_game_objects(options = {})
  #
  # TODO: Move this to GameObjectList#save ?
  #
  file = options[:file] || "#{self.class.to_s.downcase}.yml"
  game_objects = options[:game_objects]
  classes = options[:classes]
  attributes = options[:attributes] || [:x, :y, :angle, :zorder, :factor_x, :factor_y, :alpha]
  
  require 'yaml'
  objects = []
  game_objects.each do |game_object|
    # Only save specified classes, if given.
    next if classes and !classes.empty? and !classes.include?(game_object.class)
    
    attr_hash = {}
    attributes.each do |attr| 
      begin
      attr_hash[attr] = game_object.send(attr)
      rescue NoMethodError
        # silently ignore attributes that doesn't exist on the particular game object
      end
    end
    objects << {game_object.class.to_s => attr_hash}
  end

  File.open(file, 'w') { |out| YAML.dump(objects, out) }
end

#show_game_object(object) ⇒ Object 



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# File 'lib/chingu/helpers/game_object.rb', line 43

def show_game_object(object)
  @game_objects.show_game_object(object)
end

#unpause_game_object(object) ⇒ Object 



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# File 'lib/chingu/helpers/game_object.rb', line 52

def unpause_game_object(object)
  @game_objects.unpause_game_object(object)
end