Akatosh

Akatosh is a light-weighted disceret event simulation library. Unlike popular library Simpy which is progress-oriented and you have to write generator function for simulated events or events interaction, Akatosh is fully object-oriented that events are encapsulated as Event with states and priority. The actual impact of events are simply regular python functions ( or async function ). You could create events all at once, or create event within event. In addition, Akatosh is async which means event that are happening at the same simulated time will be executed simultaneously for real, unless they have different priority.

Akatosh also support Resource, provide all functionalities as it is in Simpy with extra utilities for telemetries collection and interaction with Entity. The Entity is unique to Akatosh which represents a abstract entity with a life-cycle, for example a follower NPC. The Entity supports utility functions to interact with Resource and automatically releases all its occupied resources upon termination.

You probably already noticed that Akatosh is the name of "Dragon God of Time" in elder scroll serie, therefore the singleton class Mundus is the core of the simulation. The Mundus will schedule the events, move forward time and engage async execution.

This work is licensed under CC BY-NC-ND 4.0. To view a copy of this license, visit https://creativecommons.org/licenses/by-nc-nd/4.0/

Real Time

Since version 3.0.0+, Akatosh also supports for real time simulation with time step of 0.1s. Real time simulation can be simply enabled by Mundus.enable_realtime(). Please note that due to async event loop overhead, there is about 10% delay from all time steps.

Quick Start

To use Akatosh:

pip install -U Akatosh

A basic example is showing below, for more information please look at Examples and API Reference, full documentation is available at https://ulfaric.github.io/Akatosh/.

import asyncio
from Akatosh.universe import universe
from Akatosh.resource import Resource
from Akatosh.entity import Entity
from Akatosh.event import Event

# create a resource with capacity of 100 and current level 50
res = Resource(100.0, 50.0)

# create a instance event happens at 0.9s
lock = Event(0.9,0.9, lambda: print("Unlocked!"))

# indicate a user entity should be created after lock event ended, wait till 1.1s.
user = Entity(lock, 1.1, "User")

# indicate user entity engage a event at 1.2s
@user.event(1.2,1.2, "Use Resource")
def user_event():
    if res.distribute(user, 1):
        print(res.level)
    else:
        print("Not enough resource")


# run simulation for 1.2s
asyncio.run(universe.simulate(1.2))