Class: Lotu::Actor

Inherits:
GameEntity show all
Extended by:
Behavior
Includes:
Helpers::Util
Defined in:
lib/lotu/actor.rb

Direct Known Subclasses

Cursor, TextBox

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 = {}) ⇒ Actor

Returns a new instance of Actor.



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

def initialize(opts={})
  # if debug is set, print out class info
  class_debug_info if $lotu.debug

  default_opts = {
    :x => 0,
    :y => 0,
    :z => 0,
    :angle => 0.0,
    :center_x => 0.5,
    :center_y => 0.5,
    :factor_x => 1.0,
    :factor_y => 1.0,
    :color => 0xffffffff,
    :mode => :default,
    :parent => $lotu
  }

  opts = default_opts.merge!(opts)
  @parent = opts[:parent]
  @parent.manage_me(self)
  set_image(opts[:image], opts) if opts[:image]
  parse_options(opts)
  @color = rand_color if opts[:rand_color]
  set_keys(opts[:keys]) unless opts[:keys].nil?

  # start behaving as
  init_behavior opts

  # if debug is set, print out instance info
  instance_debug_info if $lotu.debug
end

Instance Attribute Details

#angle ⇒ Object

Returns the value of attribute angle.



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# File 'lib/lotu/actor.rb', line 11

def angle
  @angle
end

#center_x ⇒ Object

Returns the value of attribute center_x.



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# File 'lib/lotu/actor.rb', line 11

def center_x
  @center_x
end

#center_y ⇒ Object

Returns the value of attribute center_y.



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# File 'lib/lotu/actor.rb', line 11

def center_y
  @center_y
end

#color ⇒ Object

Returns the value of attribute color.



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# File 'lib/lotu/actor.rb', line 11

def color
  @color
end

#factor_x ⇒ Object

Returns the value of attribute factor_x.



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# File 'lib/lotu/actor.rb', line 11

def factor_x
  @factor_x
end

#factor_y ⇒ Object

Returns the value of attribute factor_y.



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# File 'lib/lotu/actor.rb', line 11

def factor_y
  @factor_y
end

#height ⇒ Object

Returns the value of attribute height.



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# File 'lib/lotu/actor.rb', line 11

def height
  @height
end

#image ⇒ Object

Returns the value of attribute image.



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# File 'lib/lotu/actor.rb', line 11

def image
  @image
end

#mode ⇒ Object

Returns the value of attribute mode.



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# File 'lib/lotu/actor.rb', line 11

def mode
  @mode
end

#parent ⇒ Object

Returns the value of attribute parent.



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# File 'lib/lotu/actor.rb', line 11

def parent
  @parent
end

#width ⇒ Object

Returns the value of attribute width.



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# File 'lib/lotu/actor.rb', line 11

def width
  @width
end

#x ⇒ Object

Returns the value of attribute x.



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# File 'lib/lotu/actor.rb', line 11

def x
  @x
end

#y ⇒ Object

Returns the value of attribute y.



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# File 'lib/lotu/actor.rb', line 11

def y
  @y
end

#z ⇒ Object

Returns the value of attribute z.



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# File 'lib/lotu/actor.rb', line 11

def z
  @z
end

Instance Method Details

#adjust_width_and_height(opts) ⇒ Object 



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# File 'lib/lotu/actor.rb', line 107

def adjust_width_and_height(opts)
  if(opts[:width] && opts[:height])
    @width = Float(opts[:width])
    @height = Float(opts[:height])
  elsif(opts[:width])
    @width = Float(opts[:width])
    @height = @width * @image.height / @image.width
  elsif(opts[:height])
    @height = Float(opts[:height])
    @width = @height * @image.width / @image.height
  else
    @width = Float(@image.width)
    @height = Float(@image.height)
  end
end

#calc_zoom ⇒ Object 



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# File 'lib/lotu/actor.rb', line 123

def calc_zoom
  @zoom_x = Float(@width)/@image.width
  @zoom_y = Float(@height)/@image.height
end

#die ⇒ Object

Remove ourselves from the update queue



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# File 'lib/lotu/actor.rb', line 129

def die
  # to call die on behaviors (that in turn wil call
  # die on systems, for example)
  super
  @parent.kill_me(self)
end

#draw ⇒ Object 



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# File 'lib/lotu/actor.rb', line 142

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

  unless @image.nil?
    @image.draw_rot(@x, @y, @z, @angle, @center_x, @center_y, @factor_x*@zoom_x, @factor_y*@zoom_y, @color, @mode)
    draw_debug if $lotu.debug?
  end
end

#draw_box(x, y, w, h, c = 0xffff0000) ⇒ Object 



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# File 'lib/lotu/actor.rb', line 158

def draw_box(x, y, w, h, c = 0xffff0000)
  $lotu.draw_line(x, y, c, x+w, y, c)
  $lotu.draw_line(x, y, c, x, y+h, c)
  $lotu.draw_line(x+w, y+h, c, x+w, y, c)
  $lotu.draw_line(x+w, y+h, c, x, y+h, c)
end

#draw_debug ⇒ Object 



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# File 'lib/lotu/actor.rb', line 153

def draw_debug
  draw_box(@x-@image.width/2, @y-@image.height/2, @image.width, @image.height)
  draw_box(@x-@width/2, @y-@height/2, @width, @height, 0xff00ff00)
end

#dt ⇒ Object

Easy access to delta-time



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# File 'lib/lotu/actor.rb', line 50

def dt
  $lotu.dt
end

#factor=(factor) ⇒ Object 



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# File 'lib/lotu/actor.rb', line 71

def factor= factor
  @factor_x = @factor_y = factor
end

#parse_options(opts) ⇒ Object 



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# File 'lib/lotu/actor.rb', line 54

def parse_options(opts)
  @x = opts[:x] || @x
  @y = opts[:y] || @y
  @z = opts[:z] || @z
  @angle = opts[:angle] || @angle
  @center_x = opts[:center_x] || @center_x
  @center_y = opts[:center_y] || @center_y
  @factor_x = opts[:factor_x] || @factor_x
  @factor_y = opts[:factor_y] || @factor_y
  @width = opts[:width]
  @color = opts[:color] || @color
  if @color.kind_of?(Integer)
    @color = Gosu::Color.new(opts[:color])
  end
  @mode = opts[:mode] || @mode
end

#rand_color ⇒ Object 



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# File 'lib/lotu/actor.rb', line 75

def rand_color
  Gosu::Color.from_hsv(rand(360), 1, 1)
end

#set_gosu_image(image, opts = {}) ⇒ Object 



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# File 'lib/lotu/actor.rb', line 90

def set_gosu_image(image, opts={})
  @image = image
  parse_options(opts)
  adjust_width_and_height(opts)
  calc_zoom
end

#set_image(image, opts = {}) ⇒ Object 



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# File 'lib/lotu/actor.rb', line 79

def set_image(image, opts={})
  @image = @parent.image(image)
  if @image.nil?
    puts "Image \"#{image}\" not found".red
    return
  end
  parse_options(opts)
  adjust_width_and_height(opts)
  calc_zoom
end

#update ⇒ Object 



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# File 'lib/lotu/actor.rb', line 136

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