VX Draw Text Test

class Scene_DrawTextTest < Scene_Base
  TEST_TEXT = "The green area is the rect given by Bitmap#text_size." # +
  "  And this is just an extra optional line that can be added to the above to demonstrate the error."
  # the green area is the rect given by Bitmap#text_size for the above string,
  # and the text is drawn to this rect
  # by definition, the text should be of approximately the same size as the rect
  # and should not shift if alignment is changed, but neither is true

  # if you make the above string really long (as in, for horizonally scrolling text)
  # the draw text will collapse over itself (uncomment the plus to see)
  ALIGN = 0 # text_size issue is really ovbious when aligned left
  # but try center with longer text, to show text drawing over itself for no reason
  # to make matters worse, it doesnt even properly center when this happens

  def start
    @sprite = Sprite_Base.new
    rect = Cache.empty_bitmap.text_size(TEST_TEXT)
    @sprite.bitmap = Bitmap.new(rect.width, rect.height)
    @sprite.bitmap.fill_rect(rect, Color.new(0, 128, 0))
    @sprite.bitmap.draw_text(rect, TEST_TEXT, ALIGN)
    center_sprite(@sprite)
  end

  def update
    super
    @sprite.update
    exit if Input.trigger?(:C)
  end

  def center_sprite(sprite)
    sprite.ox = sprite.bitmap.width / 2
    sprite.oy = sprite.bitmap.height / 2
    sprite.x = Graphics.width / 2
    sprite.y = Graphics.height / 2
  end

  def terminate
  end

end


module Cache
  def self.empty_bitmap
    Bitmap.new(32, 32)
  end
end


$scene = Scene_DrawTextTest.new
$scene.main while $scene