Class: Lotu::Game

Inherits:
Gosu::Window
  • Object
show all
Extended by:
Behavior
Includes:
Helpers::Util
Defined in:
lib/lotu/game.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Behavior

behave_like, inherited

Methods included from Helpers::Util

#class_debug_info, #instance_debug_info, #parse_cli_options

Constructor Details

#initialize(opts = {}) ⇒ Game

Returns a new instance of Game.



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# File 'lib/lotu/game.rb', line 16

def initialize(opts={})
  # parse and merge options passed from
  # the CLI (Command Line Interface)
  # CLI options have the greatest precedence
  if opts[:parse_cli_options] || opts[:parse_cli_options].nil?
    opts.merge!(parse_cli_options)
  end

  # set some sane default opts
  default_opts = {
    :width => 1024,
    :height => 768,
    :fullscreen => false,
    :debug => false
  }
  # fill in any missing options using the defaults
  opts = default_opts.merge!(opts)

  # Handy global window variable
  $lotu = self

  # Game setup
  @debug = opts[:debug]
  @pause = false
  setup_containers

  # if debug is set, print out class info
  class_debug_info if @debug

  # call the Gosu::Window constructor
  super(opts[:width], opts[:height], opts[:fullscreen])

  # For timer initialization
  @last_time = Gosu::milliseconds

  # start behaving as
  init_behavior opts

  # Call hook methods
  load_resources
  setup_actors
  setup_input
  setup_events

  # if debug is set, print out instance info
  instance_debug_info if @debug
end

Instance Attribute Details

#debug ⇒ Object (readonly)

Accessors for elapsed time since last update (time delta) and debug



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# File 'lib/lotu/game.rb', line 12

def debug
  @debug
end

#draw_queue ⇒ Object

Accessors for queues



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# File 'lib/lotu/game.rb', line 14

def draw_queue
  @draw_queue
end

#dt ⇒ Object (readonly)

Accessors for elapsed time since last update (time delta) and debug



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# File 'lib/lotu/game.rb', line 12

def dt
  @dt
end

#input_listeners ⇒ Object

Accessors for queues



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# File 'lib/lotu/game.rb', line 14

def input_listeners
  @input_listeners
end

#update_queue ⇒ Object

Accessors for queues



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# File 'lib/lotu/game.rb', line 14

def update_queue
  @update_queue
end

Instance Method Details

#button_down(id) ⇒ Object

These are for managing input



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# File 'lib/lotu/game.rb', line 138

def button_down(id)
  @input_register[id].each do |item|
    item.button_down(id)
  end
end

#button_up(id) ⇒ Object 



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# File 'lib/lotu/game.rb', line 144

def button_up(id)
  @input_register[id].each do |item|
    item.button_up(id)
  end
end

#debug! ⇒ Object 



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# File 'lib/lotu/game.rb', line 76

def debug!
  @debug = !@debug
end

#debug? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lotu/game.rb', line 80

def debug?
  @debug
end

#draw ⇒ Object

Main draw loop



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# File 'lib/lotu/game.rb', line 115

def draw
  # to call draw on behaviors (that in turn will call
  # draw on systems, for example)
  super

  # Draw each actor in queue
  @draw_queue.each do |actor|
    actor.draw
  end
end

#fps ⇒ Object 



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# File 'lib/lotu/game.rb', line 64

def fps
  Gosu::fps
end

#kill_me(actor) ⇒ Object 



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# File 'lib/lotu/game.rb', line 132

def kill_me(actor)
  @draw_queue.delete(actor)
  @update_queue.delete(actor)
end

#load_resources ⇒ Object

Hook methods, these are meant to be replaced by subclasses



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# File 'lib/lotu/game.rb', line 85

def load_resources; end

#manage_me(actor) ⇒ Object

For actor management



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# File 'lib/lotu/game.rb', line 127

def manage_me(actor)
  @draw_queue << actor
  @update_queue << actor
end

#pause! ⇒ Object 



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# File 'lib/lotu/game.rb', line 68

def pause!
  @pause = !@pause
end

#paused? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lotu/game.rb', line 72

def paused?
  @pause
end

#register_for_input(controller) ⇒ Object 



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# File 'lib/lotu/game.rb', line 150

def register_for_input(controller)
  controller.keys.each_key do |key|
    @input_register[key] << controller
  end
  @update_queue << controller
end

#setup_actors ⇒ Object 



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# File 'lib/lotu/game.rb', line 86

def setup_actors; end

#setup_containers ⇒ Object

Setup various containers



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# File 'lib/lotu/game.rb', line 91

def setup_containers
  # For queues
  @update_queue = []
  @draw_queue = []
  @input_register = Hash.new{|hash,key| hash[key] = []}
end

#setup_events ⇒ Object 



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# File 'lib/lotu/game.rb', line 88

def setup_events; end

#setup_input ⇒ Object 



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# File 'lib/lotu/game.rb', line 87

def setup_input; end

#update ⇒ Object

Main update loop



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# File 'lib/lotu/game.rb', line 99

def update
  new_time = Gosu::milliseconds
  @dt = (new_time - @last_time)/1000.0
  @last_time = new_time

  # to call update on behaviors (that in turn wil call
  # update on systems, for example)
  super

  # Update each actor
  @update_queue.each do |actor|
    actor.update
  end unless paused?
end