use std::fs::File;
use rosu_pp::{Beatmap, BeatmapExt};

let file = match File::open("/path/to/file.osu") {
    Ok(file) => file,
    Err(why) => panic!("Could not open file: {}", why),
};

// Parse the map yourself
let map = match Beatmap::parse(file) {
    Ok(map) => map,
    Err(why) => panic!("Error while parsing map: {}", why),
};

// If `BeatmapExt` is included, you can make use of
// some methods on `Beatmap` to make your life simpler.
let result = map.pp()
    .mods(24) // HDHR
    .combo(1234)
    .misses(2)
    .accuracy(99.2)
    .calculate();

println!("PP: {}", result.pp());

// If you intend to reuse the current map-mod combination,
// make use of the previous result!
// If attributes are given, then stars & co don't have to be recalculated.
let next_result = map.pp()
    .mods(24) // HDHR
    .attributes(result) // recycle
    .combo(543)
    .misses(5)
    .n50(3)
    .passed_objects(600)
    .accuracy(96.5)
    .calculate();

println!("Next PP: {}", next_result.pp());

let stars = map.stars(16, None).stars(); // HR
let max_pp = map.max_pp(16).pp();

println!("Stars: {} | Max PP: {}", stars, max_pp);

With async

If either the async_tokio or async_std feature is enabled, beatmap parsing will be async.

use async_std::fs::File;
// use tokio::fs::File;

let file = match File::open("/path/to/file.osu").await {
    Ok(file) => file,
    Err(why) => panic!("Could not open file: {}", why),
};

// Parse the map asynchronously
let map = match Beatmap::parse(file).await {
    Ok(map) => map,
    Err(why) => panic!("Error while parsing map: {}", why),
};

// The rest stays the same
let result = map.pp()
    .mods(24) // HDHR
    .combo(1234)
    .misses(2)
    .accuracy(99.2)
    .calculate();

println!("PP: {}", result.pp());

Features

Flag	Description
`default`	Enable all modes.
`osu`	Enable osu!standard.
`taiko`	Enable osu!taiko.
`fruits`	Enable osu!ctb.
`mania`	Enable osu!mania.
`async_tokio`	Beatmap parsing will be async through tokio
`async_std`	Beatmap parsing will be async through async-std

Benchmarks (TODO, update w.r.t removed feature flags)

Comparing the PP calculation speed between osu-perf (alternative rust pp calculculation crate), an oppai-ng rust binding, and rosu-pp's no_sliders_no_leniency:

Comparing the PP calculation speed between rosu-pp's all_included, no_leniency, and no_sliders_no_leniency versions:

Comparing the PP (in)accuracy between rosu-pp's all_included, no_leniency, and no_sliders_no_leniency versions:

Comparing the stars (in)accuracy between rosu-pp's all_included, no_leniency, and no_sliders_no_leniency versions: