pgcooldown 0.2.7

A cooldown/counter class to wait for stuff in games

pgcooldown

Cooldown & co...

This module started with just the Cooldown class, which can be used check if a specified time has passed. It is mostly indended to be used to control objects in a game loop, but it is general enough for other purposes as well.

    fire_cooldown = Cooldown(1, cold=True)
    while True:
        if fire_shot and fire_cooldown.cold:
            fire_cooldown.reset()
            launch_bullet()

        ...

With the usage of Cooldown on ramp data (e.g. a Lerp between an opaque and a fully transparent sprite over the time of n seconds), I came up with the LerpThing. The LerpThing gives you exactly that. A lerp between from and to mapped onto a duration.

    alpha = LerpThing(0, 255, 5)
    while True:
        ...
        sprite.set_alpha(alpha())
        # or sprite.set_alpha(alpha.v)

        if alpha.finished:
            sprite.kill()

Finally, the need to use Cooldown for scheduling the creations of game objects, the CronD class was added. It schedules functions to run after a wait period.

Note, that CronD doesn't do any magic background timer stuff, it needs to be updated in the game loop.

    crond = CronD()
    crond.add(1, create_enemy(screen.center))
    crond.add(2, create_enemy(screen.center))
    crond.add(3, create_enemy(screen.center))
    crond.add(4, create_enemy(screen.center))

    while True:
        ...
        crond.update()

Installation

The project home is https://github.com/dickerdackel/pgcooldown

Installing HEAD from github directly

pip install git+https://github.com/dickerdackel/pgcooldown

Getting it from pypi

pip install pgcooldown

Tarball from github

Found at https://github.com/dickerdackel/pgcooldown/releases

Licensing stuff

This lib is under the MIT license.