Chaos Project

#=======================================================================
# ** Additional Bitmap Methods
#-----------------------------------------------------------------------
#   By Untra
#   5/5/10
#   v0.5
#=======================================================================
  #---------------------------------------------------------------------
  # * Invert
  #   WARNING: Inverting colors is especially process consuming, and
  #     with frequent use can lag a game indefinitely. Use sparringly.  
  #   NOTE: calling an invert color method a second time will bring its 
  #     colors back to normal, assuming you didn't change its colors
  #     while in negative.
  #---------------------------------------------------------------------
  class Bitmap
  def invert
    for w in 0..(width - 1)
      for h in 0..(height - 1)
        color = get_pixel(w, h)
        r = 255 - color.red
        g = 255 - color.green
        b = 255 - color.blue
        a = color.alpha
        set_pixel(w, h, Color.new(r, g, b, a)) if a > 0
      end
    end
    return self
  end
end

#=======================================================================
# ** Additional Bitmap Methods Implemented
#=======================================================================

class Sprite_Character
  alias invert_update update
  def update
    invert_update
    if @character.inverting
      self.bitmap.invert
      @character.invert
    end
  end
end

class Game_Character
  attr_reader :inverting
  alias invert_init initialize
  def initialize
    invert_init
    @inverting = false
  end
  def invert
    @inverting = !@inverting
  end
end