def pbTextSprite(viewport = nil, type = "System")
  sprite = Sprite.new(viewport)
  sprite.z = 99999
  sprite.bitmap = Bitmap.new(Graphics.width, Graphics.height)
  eval("pbSet#{type}Font(sprite.bitmap)")
  return sprite
end

If you just want a sprite for a type icon, you can just do "mySprite = pbTypeSprite(type, viewport)" with this. Type should be a number or a "PBMove" object.

def pbTypeSprite(type, viewport = nil)
  type = type.type if type.is_a?(PBMove)
  sprite = Sprite.new(viewport)
  sprite.bmp("Graphics/Pictures/types")
  sprite.src_rect.height = sprite.bitmap.height / PBTypes.getCount
  sprite.src_rect.y = sprite.src_rect.height * type
  return sprite
end

Example:
mySprite = pbTypeSprite(0,  @viewport)

This sprite is now the icon of the Normal type. If it does not work properly, the types.txt PBS file and the types.png sheet may not have the same amount of types.