Rename .env.example to .env and put proper values for both of its variables:
- PERF_CALC_PATH is going to be something like C:/osu-tools/PerformanceCalculator/bin/Release/net5.0/PerformanceCalculator.dll
- MAP_PATH is the path to the folder containing a bunch of {map_id}.osu files
- MAP_TAKE is the amount of maps for which values will be calculated
- MAP_SKIP is the amount of maps that will be skipped in the MAP_PATH folder after each calculation
Run cargo run --release. The program will use the PerformanceCalculator.dll to calculate the values and then store them in output.json.

Output format

The calculated values for each map for multiple different mod combinations will be stored in a JSON array. The array elements will be of the following form:

{
    "score": {
        "mode": integer,
        "map_id": integer,
        "mods": [string],
        "total_score": integer,
        "acc": double,
        "combo": integer,
        "stats": {
            "perfect": integer?,
            "great": integer,
            "good": integer?,
            "ok": integer,
            "meh": integer,
            "miss": integer,
        }
    },
    "performance": {
        "aim": double?,
        "speed": double?,
        "acc": double?,
        "flashlight": double?,
        "effective_miss_count": double?,
        "scaled_score": double?,
        "difficulty": double?,
        "pp": double,
    },
    "difficulty": {
        "stars": double,
        "max_combo": integer,
        "aim": double?,
        "speed": double?,
        "flashlight": double?,
        "slider_factor": double?,
        "stamina": double?,
        "rhythm": double?,
        "colour": double?,
        "ar": double?,
        "od": double?,
        "great_hit_window": double?,
        "score_multiplier": double?,
    }
}