mutable

Classes for things in the skool that change appearance depending on their state. For example, a cup that may be empty or contain water or sherry.

class mutable.Bike(x, y)

Represents the portion of the tree that may or may not have a bike chained to it.

Parameters:
  • x – The x-coordinate of the bike-on-a-tree image.
  • y – The y-coordinate of the bike-on-a-tree image.
build_images()
Build the images for the bike. This method is called after rescaling the screen or loading a saved game.
chain()
Return a 2-tuple containing a list of the images to use when the bike is chained to the tree, and the coordinates of the images.
get_images()
Return a 2-tuple containing a list of images of the current state of the bike, and the coordinates at which to draw the bike.
set_images(unchained_images, chained_images)

Define the images to use for the bike-on-a-tree.

Parameters:
  • unchained_images – A list of images to use when the bike is not chained to the tree.
  • chained_images – A list of images to use when the bike is chained to the tree.
unchain()
Return a 3-tuple containing a list of the images to use when the bike is not chained to the tree, and the coordinates of the images.
class mutable.Cup(cup_id, coords, water_id, sherry_id)

A cup that may be empty or filled with water or sherry.

Parameters:
  • cup_id – The ID of the cup.
  • coords – The coordinates of the cup.
  • water_id – The ID of the liquid for which the water-filled image should be used.
  • sherry_id – The ID of the liquid for which the sherry-filled image should be used.
build_images()
Build the images for the cup. This method is called after rescaling the screen or loading a saved game.
fill(contents)

Fill the cup with a liquid, or empty it.

Parameter:contents – The liquid to fill the cup with, or None to empty it.
Returns:The images for and location of the cup.
get_images()
Return a 2-tuple containing a list of images of the current state of the cup, and the coordinates at which to draw the cup.
insert_frog(frog)

Insert a frog into the cup.

Parameter:frog (Frog) – The frog.
is_empty()
Return whether the cup is empty (contains no liquid or frogs).
remove_frog(frog)

Remove a frog from the cup.

Parameter:frog (Frog) – The frog.
set_images(empty_images, water_images, sherry_images)

Define the images to use for the cup.

Parameters:
  • empty_images – A list of images of the cup when empty.
  • water_images – A list of images of the cup when filled with water.
  • sherry_images – A list of images of the cup when filled with sherry.
class mutable.Flashable(x, y, images, inverse_images, score=0)

Abstract superclass for objects that flash (shields and the safe).

Parameters:
  • x – The x-coordinate of the object.
  • y – The y-coordinate of the object.
  • images – A list of normal images of the object.
  • inverse_images – A list of inverse images of the object.
  • score – The points awarded for hitting the object.
build_images()
Build the images for this object. This method is called after rescaling the screen or loading a saved game.
flash()
Mark the object as flashing.
get_images(inverse)

Return a 2-tuple containing a list of images of the object, and the coordinates at which it should be drawn.

Parameter:inverse – If True, return the inverse images; otherwise return the normal images.
unflash()
Mark the object as not flashing.
class mutable.Safe(x, y, images, inverse_images, score=0)
A safe that will flash or unflash when hit.
class mutable.Shield(x, y, images, inverse_images, score=0)
A shield that will flash or unflash when hit.

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