peace-performance-python 1.0.1

Rust binding for python. To calculate star ratings and performance points for all osu! gamemodes, and quickly parse Beatmap into python objects.

peace-performance-python

Fast, To calculate star ratings and performance points for all osu! gamemodes, And, quickly parse Beatmap into python objects.

PP Version: 21.07.27

peace-performance (Rust) binding for python based on PyO3.

Cross-platform support. Support synchronous and asynchronous(tokio and async_std).

Faster than oppai-ng, see the benchmark for details.

Install by pip

PyPI: https://pypi.org/project/peace-performance-python

pip install peace-performance-python

Reliability:

check_your_osu_songs.py

Testing on my local machine, about 70,000 maps can be calculated properly.

[ Walking (E:\osu\songs) Start... ]
[ 69146 ] .osu files founded...
[ Walking Done! ]
[ Start task ]
69146/69146; ok: 69142, err: 0; total time: 23825.90ms, avg: 0.34ms
[ All DONE ]

PP Calculate

Minimal Examples

from peace_performance_python.prelude import *

beatmap = Beatmap('path_to_osu_file') # Beatmap can be cached and reused!
beatmap = await Beatmap.create_async_rs('path_to_osu_file') # Async support!
result = Calculator(acc=98.8, miss=3).calculate(beatmap)

Full Examples

import asyncio

# import all
from peace_performance_python.prelude import *
# or
# from peace_performance_python.objects import Beatmap, Calculator

from tests import join_beatmap, HITORIGOTO, UNFORGIVING


# Initialize Rust logger (optional)
set_log_level('trace')
init_logger()


# Choose a style you like
def calculate(beatmap: Beatmap, calculator: Calculator) -> CalcResult:
    return calculator.calculate(beatmap)


def calculate_2(beatmap: Beatmap) -> CalcResult:
    # --
    c = Calculator()
    c.set_acc(98.8)
    c.set_miss(3)

    # or
    c.acc = 98.8
    c.miss = 3

    # or
    c.setattr('acc', 98.8)
    c.setattr('miss', 3)
    return calculate(beatmap, c)


def calculate_3(beatmap: Beatmap) -> CalcResult:
    c = Calculator()
    c.set_with_dict({'acc': 98.8, 'miss': 3})
    return calculate(beatmap, c)


def calculate_4(beatmap: Beatmap) -> CalcResult:
    return Calculator({'acc': 98.8, 'miss': 3}).calculate(beatmap)


def calculate_5(beatmap: Beatmap) -> CalcResult:
    return Calculator(acc=98.8, miss=3).calculate(beatmap)


async def main() -> None:
    path = join_beatmap(HITORIGOTO)
    # Load beatmap
    beatmap = Beatmap(path)
    # beatmap = Beatmap.create(path)

    # Async
    # beatmap = await Beatmap.create_async_rs(path)
    # beatmap = await Beatmap.create_async_py(path)
    # or
    # beatmap = await AsyncBeatmapRust(path)
    # beatmap = await AsyncBeatmapPython(path)
    print('\n**** Beatmap:', beatmap)

    # Calculate pp
    # result = calculate_5(beatmap)
    c = Calculator(acc=98.8, miss=3)
    print('\n***** Calculator as dict:', c.attrs_dict)
    result = c.calculate(beatmap)

    # Print results
    # print('\n***** result:', result)
    print('\n***** result.pp:', result.pp)
    print('\n***** result as dict:', result.attrs_dict)
    # print('\n***** result.raw_stars as dict:', result.raw_stars.attrs_dict)
    # print('\n***** result.raw_pp as dict:', result.raw_pp.attrs_dict)

    # Reset calculator
    c.reset()
    print('\n***** reseted Calculator as dict:', c.attrs_dict)

    # Calc again
    result2 = c.calculate(beatmap)
    print('\n***** result2 as dict:', result2.attrs_dict)

    # Load another .osu files
    path2 = join_beatmap(UNFORGIVING)
    beatmap.init(path2)
    print(beatmap)


if __name__ == '__main__':
    asyncio.run(main())

Running results

 TRACE peace_performance_python::methods::common > function=sync_read_file duration=73.3µs
 TRACE peace_performance_python::methods::pp     > function=sync_parse_beatmap duration=181.9µs

>>>>> Beatmap: <Beatmap object (
        path: ./test_beatmaps/hitorigoto.osu, 
        is_initialized: True, 
        mode: 0, 
        mode_str: std, 
        version: 14, 
        n_circles: 207, 
        n_sliders: 132, 
        n_spinners: 1, 
        ar: 9, 
        od: 8.5, 
        cs: 4, 
        hp: 6, 
        sv: 1.7, 
        tick_rate: 1, 
        stack_leniency: None
    )>

>>>>> Calculator as dict: {
    'mode': None, 
    'mods': None, 
    'n50': None, 
    'n100': None, 
    'n300': None, 
    'katu': None, 
    'acc': 98.80000305175781, 
    'passed_obj': None, 
    'combo': None, 
    'miss': 3
    }
 TRACE peace_performance_python::methods::pp         > function=calc_with_any_pp duration=55.7µs
 TRACE peace_performance_python::objects::calculator > function=calc duration=103.2µs


>>>>> result.pp: 152.19204711914062


>>>>> result as dict: {
    'mode': 0, 
    'mods': 0, 
    'pp': 152.19204711914062, 
    'stars': 5.162832260131836, 
    'raw_pp': {
        'aim': 73.0337905883789, 
        'spd': 31.048368453979492, 
        'str': None, 
        'acc': 45.17241287231445, 
        'total': 152.19204711914062}, 
    'raw_stars': {
        'stars': 5.162832260131836, 
        'max_combo': 476, 
        'ar': 9.0, 
        'n_fruits': None, 
        'n_droplets': None, 
        'n_tiny_droplets': None, 
        'od': 8.5, 
        'speed_strain': 2.0723509788513184, 
        'aim_strain': 2.7511043548583984, 
        'n_circles': 207, 
        'n_spinners': 1
        }
    }

...

---

Beatmap parse

Examples

from peace_performance_python.prelude import *
from tests import join_beatmap, HITORIGOTO

# Initialize Rust logger (optional)
set_log_level('trace')
init_logger()


def main():
    path = join_beatmap(HITORIGOTO)
    # Load beatmap
    b = Beatmap(path)
    print('\n>>>>> Beatmap:', b)
    print('\n>>>>> Beatmap.hit_objects (0-3):', b.hit_objects[:3])
    print('\n>>>>> Beatmap.timing_points:', b.timing_points)
    print('\n>>>>> Beatmap.difficulty_points (0-3):', b.difficulty_points[:3])
    print('\n>>>>> Beatmap.hit_objects[0].pos:', b.hit_objects[0].pos)
    print('\n>>>>> Beatmap.hit_objects[3].kind:', b.hit_objects[3].kind)
    print('\n>>>>> Beatmap.hit_objects[3].kind.curve_points:',
          b.hit_objects[3].kind.curve_points)

    pos_0 = b.hit_objects[0].pos
    pos_1 = b.hit_objects[1].pos
    print('\n>>>>> Beatmap object(0):', b.hit_objects[0])
    print('\n>>>>> Beatmap object(1):', b.hit_objects[1])
    print('\n>>>>> Beatmap object pos(0):', pos_0)
    print('\n>>>>> Beatmap object pos(1):', pos_1)
    print('\n>>>>> Beatmap object pos(0) length, squared:',
          pos_0.length, pos_0.length_squared)
    print('\n>>>>> Beatmap object pos(0 and 1) distance:', pos_0.distance(pos_1))
    print('\n>>>>> Beatmap object pos(0 and 1) add:', pos_0.add(pos_1))
    print('\n>>>>> Beatmap object pos(0 and 1) sub:', pos_0.sub(pos_1))


if __name__ == '__main__':
    main()

Running results

 TRACE peace_performance_python::methods::common > function=sync_read_file duration=78.3µs
 TRACE peace_performance_python::methods::pp     > function=sync_parse_beatmap duration=193.4µs

>>>>> Beatmap: <Beatmap object (
        path: ./test_beatmaps/hitorigoto.osu, 
        is_initialized: True, 
        mode: 0, mode_str: std, version: 14, 
        n_circles: 207, n_sliders: 132, n_spinners: 1, 
        ar: 9, od: 8.5, cs: 4, hp: 6, sv: 1.7, tick_rate: 1, 
        stack_leniency: None
    ), hidden: hit_objects, timing_points, difficulty_points>

>>>>> Beatmap.hit_objects (0-3): [
    <HitObject object (
        start_time: 536, sound: 4, end_time: 536, kind: circle, pos: (44, 136))>, 
    <HitObject object (
        start_time: 717, sound: 0, end_time: 717, kind: circle, pos: (315, 196))>, 
    <HitObject object (
        start_time: 899, sound: 0, end_time: 899, kind: slider, pos: (152, 304))>]

>>>>> Beatmap.timing_points: [<TimingPoint object (time: 536, beat_len: 363.63635)>]

>>>>> Beatmap.difficulty_points (0-3): [
    <DifficultyPoint object (time: 23808, speed_multiplier: 1)>, 
    <DifficultyPoint object (time: 35445, speed_multiplier: 0.8)>, 
    <DifficultyPoint object (time: 41263, speed_multiplier: 1)>]

>>>>> Beatmap.hit_objects[0].pos: <Pos2 object (x: 44, y: 136)>

>>>>> Beatmap.hit_objects[3].kind: <HitObjectKind object (
    kind: slider, pixel_len: Some(85.0), repeats: Some(1), 
    path_type: Some("perfect_curve"), end_time: None)>

>>>>> Beatmap.hit_objects[3].kind.curve_points: [
    <Pos2 object (x: 315, y: 196)>, 
    <Pos2 object (x: 277, y: 176)>, 
    <Pos2 object (x: 248, y: 145)>]

>>>>> Beatmap object(0): <HitObject object (
    start_time: 536, sound: 4, end_time: 536, kind: circle, pos: (44, 136))>

>>>>> Beatmap object(1): <HitObject object (
    start_time: 717, sound: 0, end_time: 717, kind: circle, pos: (315, 196))>

>>>>> Beatmap object pos(0): <Pos2 object (x: 44, y: 136)>

>>>>> Beatmap object pos(1): <Pos2 object (x: 315, y: 196)>

>>>>> Beatmap object pos(0) length, squared: 142.9405517578125 20432.0

>>>>> Beatmap object pos(0 and 1) distance: 277.5625915527344

>>>>> Beatmap object pos(0 and 1) add: <Pos2 object (x: 359, y: 332)>

>>>>> Beatmap object pos(0 and 1) sub: <Pos2 object (x: -271, y: -60)>

---

Building

This package is intended to be built using rust, maturin or setuptools_rust.

1. Install Rust

posix

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

windows

https://static.rust-lang.org/rustup/dist/x86_64-pc-windows-msvc/rustup-init.exe

2. Install python dev dependencies

pip install -r requirements-dev.txt

3. Build native python lib

maturin develop --release

OR

python setup.py develop

Compile to .whl to use pip installation

maturin build --release

OR

python setup.py bdist_wheel

install .whl

# maturin build
pip install target/wheels/<name>.whl

# setup.py build
pip install dist/<name>.whl

---

Run tests and benchmarks

Once built, you can run the tests and benchmakrs using pytest

pytest

or bench and draw a image

pytest --benchmark-histogram

Complete bench

pytest --benchmark-disable-gc --benchmark-warmup=True --benchmark-histogram

Run examples

python examples.py

---

Features

Flag	Description
default	Enable async_tokio, all modes and choose the all_included version for osu!standard.
peace_edition	Buff ScoreV2 (STD) - acc *= 1.2
relax_nerf	Nerf relax and autopilot pp. Relax: aim * 0.9, spd * 0.3, acc *0.8; Autopilot: aim * 0.3, spd * 0.9, acc * 0.8
taiko	Enable osu!taiko.
fruits	Enable osu!ctb.
mania	Enable osu!mania.
osu	Enable osu!standard. Requires to also enable exactly one of the features no_leniency, no_sliders_no_leniency, or all_included.
no_leniency	When calculating difficulty attributes in osu!standard, ignore stack leniency but consider sliders. Solid middleground between performance and precision, hence the default version.
no_sliders_no_leniency	When calculating difficulty attributes in osu!standard, ignore stack leniency and sliders. Best performance but slightly less precision than no_leniency.
all_included	When calculating difficulty attributes in osu!standard, consider both stack leniency and sliders. Best precision but significantly worse performance than no_leniency.
async_tokio	Beatmap parsing will be async through tokio
async_std	Beatmap parsing will be async through async-std

Vs Oppai-ng

peace-performance Python bindings vs C89 oppai-ng Python bindings.

Rust is Faster. The longer the map, the more obvious the advantages of rust.

peace-performance enables the no_sliders_no_leniency feature to be consistent with oppai's algorithm (faster, but loses precision).

If you need maximum precision (osu-performance) rather than performance, use all_included features.

This test was run on my subsystem and had performance issues with a minimum time greater than 1ms. (The minimum time in windows is 86us (padoru) and the next smallest is 192us (hitorigoto)

------------------------------------------------------------------------ benchmark 'bench-oppai-vs-rust': 12 tests -------------------------------------------------------------------------
Name (time in ms)               Min                Max               Mean            StdDev             Median               IQR            Outliers       OPS            Rounds  Iterations
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
test_rust_padoru             1.3805 (1.0)       1.7463 (1.0)       1.4447 (1.0)      0.0518 (1.0)       1.4301 (1.0)      0.0444 (1.01)        68;32  692.1759 (1.0)         358           1
test_rust_hitorigoto         1.6154 (1.17)      2.0133 (1.15)      1.7433 (1.21)     0.0587 (1.13)      1.7407 (1.22)     0.0439 (1.0)        129;82  573.6085 (0.83)        498           1
test_oppai_padoru            1.8734 (1.36)      2.3294 (1.33)      1.9799 (1.37)     0.0845 (1.63)      1.9659 (1.37)     0.0931 (2.12)        47;11  505.0744 (0.73)        204           1
test_oppai_hitorigoto        2.5925 (1.88)      3.1272 (1.79)      2.7537 (1.91)     0.0883 (1.70)      2.7357 (1.91)     0.0887 (2.02)        84;21  363.1464 (0.52)        346           1
test_rust_freedom_dive       3.0829 (2.23)      3.6729 (2.10)      3.1865 (2.21)     0.0687 (1.33)      3.1715 (2.22)     0.0685 (1.56)        70;18  313.8282 (0.45)        303           1
test_rust_sotarks            3.6848 (2.67)      4.0976 (2.35)      3.7886 (2.62)     0.0748 (1.45)      3.7676 (2.63)     0.0748 (1.70)        51;17  263.9489 (0.38)        240           1
test_rust_galaxy_burst       5.1418 (3.72)      5.7422 (3.29)      5.2629 (3.64)     0.0851 (1.64)      5.2349 (3.66)     0.0911 (2.08)         44;9  190.0092 (0.27)        184           1
test_oppai_freedom_dive      5.8532 (4.24)      6.3883 (3.66)      6.0279 (4.17)     0.1154 (2.23)      5.9971 (4.19)     0.1660 (3.78)         45;2  165.8948 (0.24)        161           1
test_oppai_sotarks           6.2822 (4.55)      7.0327 (4.03)      6.4706 (4.48)     0.1350 (2.61)      6.4400 (4.50)     0.1544 (3.52)         36;4  154.5453 (0.22)        145           1
test_oppai_galaxy_burst      8.2669 (5.99)      9.4358 (5.40)      8.5453 (5.91)     0.1838 (3.55)      8.5012 (5.94)     0.1732 (3.95)         25;8  117.0232 (0.17)        114           1
test_rust_unforgiving       10.9350 (7.92)     11.6170 (6.65)     11.1305 (7.70)     0.1289 (2.49)     11.1028 (7.76)     0.1701 (3.87)         26;2   89.8429 (0.13)         88           1
test_oppai_unforgiving      22.8311 (16.54)    23.7671 (13.61)    23.1481 (16.02)    0.2352 (4.54)     23.0818 (16.14)    0.2999 (6.83)         10;1   43.2001 (0.06)         43           1
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Simple Benchmarks

Native vs Wrapped beatmap object, Sync vs Async, Py async vs Rust async

Note: Rust has its own event loop (independent of python) and has performance issues due to rust's need to convert built-in futures to python coroutine. So rust async is the worst performer.

Read and parsing time spent on beatmap of different sizes (forgiving is a beatmap over 50 minutes long and takes the longest)

There are also subtle differences in the different calling methods

---

MIT

pure-peace