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Mutant Standard for PursuedPyBear

Project description


This library provides convenient support for the Mutant Standard emoji for games using the PursuedPyBear engine.

This version is for PursuedPyBear v0.4.0 and Mutant Standard v0.3.0.

On Versions: This project is semi-semver: Whenever the matching PPB or Mutant dependencies are updated, the major version is changed (eg frome v0.4 to v0.5). Whenever the library itself is updated, the minor version is changed (eg from v0.4.0 to v0.4.1); this may introduce breaking changes.


  1. Install the ppb-mutant package through your preferred package management system. (pip, requirements.txt, pipenv, poetry, etc)



A demo showing all emoji can be found by running python -m


You can replace the use of image in your sprites with emoji like so:

class SlimeSprite(ppb_mutant.MutantSprite):
    emoji = 'people_animals/creatures/other/slime'

In addition, the formatting syntax with the variables morph and skin may be used for Mutant's customization features:

class PunchRightSprite(ppb_mutant.MutantSprite):
    emoji = 'fist_facing_right_{morph}_{skin}'
    morph = 'clw'
    tone = 'r2'  # "colour"

See the modifier guide for details on these.

Alternatively, most customizable emoji also have aliases defined:

class PunchRightSprite(ppb_mutant.MutantSprite):
    emoji = 'fist_facing_right'
    morph = 'clw'
    tone = 'r2'  # "colour"


SelectScene is a base for allowing you to handle mutant morph and tone (color) customization. It can be used like:

class CustomizeScene(SelectScene):
    class Sprite(SelectScene.Sprite): pass

    class BackSprite(Region, Sprite):
        emoji = 'tick'
        def on_button_pressed(self, mouse, signal):
            if self.contains(mouse.position) and mouse.button is ppb.buttons.Primary:
                mouse.scene.running = False

    def __init__(self, *p, **kw):
        super().__init__(*p, **kw)
        left = self.main_camera.frame_left
        self.add(self.BackSprite(pos=(left + 2.5, -1.5)))

    def do_update_morphtone(self):
        print(self.morph, self.tone)

Copyright Notice

This library uses Mutant Standard emoji, which are licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.


The compiled assets are not part of git.

If you just want a copy, pull them out of one of the PyPI packages and copy into ppb_mutant/_assets

To compile them fresh:

  1. Run ./
  2. Run ./ (Takes a long time)
  3. Run ./
  4. Run ./

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