osuplusplus/include/config_def.hpp

#ifndef CONFIG
#define CONFIG_DEFINED

#define CONFIG(name, ...)
#define SECTION(name, ...)

#define VAR_UINT(section, name)
#define VAR_UINT_P(section, name, prefix)
#define VAR_UINT_D(section, name, default)

#define VAR_INT(section, name)
#define VAR_INT_P(section, name, prefix)
#define VAR_INT_D(section, name, default)

#define VAR_STRING(section, name)
#define VAR_STRING_P(section, name, prefix)
#define VAR_STRING_D(section, name, default)

#define VAR_BOOL(section, name)
#define VAR_BOOL_P(section, name, prefix)
#define VAR_BOOL_D(section, name, default)

#define VAR_FLOAT(section, name)
#define VAR_FLOAT_P(section, name, prefix)
#define VAR_FLOAT_D(section, name, default)

#define VAR_COLOUR(section, name)
#define VAR_COLOUR_P(section, name, prefix)
#define VAR_COLOUR_D(section, name, default)

#define ENUM(name, ...)
#define VAR_ENUM(section, name, enum_type)
#define VAR_ENUM_P(section, name, prefix)
#define VAR_ENUM_D(section, name, enum_type, default)

#define STRUCT(name, ...)
#define VAR_STRUCT(section, name, struct_type)
#define VAR_STRUCT_P(section, name, prefix)
#define VAR_STRUCT_D(section, name, struct_type, default)

#define STRUCT_INPUT_STREAM_OP(name, ...)
#define STRUCT_OUTPUT_STREAM_OP(name, ...)
#define STRUCT_STREAM_OPS(name, ...)

#define VAR_LIST(section, name, type)
#define VAR_LIST_SEP(section, name, type, sep)
#define VAR_LIST_SEP_P(section, name, type, sep, prefix)
#define VAR_LIST_NUMBERED(section, name, type)
#endif // CONFIG

ENUM(Countdown,
    NONE,
    NORMAL,
    HALF,
    DOUBLE
)

ENUM(SampleSet,
    DEFAULT,
    NORMAL,
    SOFT,
    DRUM
)

ENUM(Mode,
    STANDARD,
    TAIKO,
    CATCH,
    MANIA
)

ENUM(OverlayPosition,
    NO_CHANGE,
    BELOW,
    ABOVE
)

STRUCT(TimingPoint,
    VAR_UINT(, time)
    VAR_FLOAT(, beatLength)
    VAR_UINT(, meter)
    VAR_ENUM(, sampleSet, SampleSet)
    VAR_UINT(, sampleIndex)
    VAR_UINT(, volume)
    VAR_BOOL(, uninherited)
    VAR_UINT(, effects)
)
STRUCT_STREAM_OPS(TimingPoint, time, beatLength, meter, sampleSet, sampleIndex, volume, uninherited, effects)

STRUCT(HitObjectType,
    VAR_UINT(, hitCircle)
    VAR_UINT(, slider)
    VAR_UINT(, newCombo)
    VAR_UINT(, spinner)
    VAR_UINT(, colourHax)
    VAR_UINT(, holdNote)
)
STRUCT_STREAM_OPS(HitObjectType, hitCircle, slider, newCombo, spinner, colourHax, holdNote)

STRUCT(HitSound,
    VAR_UINT(, normal)
    VAR_UINT(, whistle)
    VAR_UINT(, finish)
    VAR_UINT(, clap)
)
STRUCT_STREAM_OPS(HitSound, normal, whistle, finish, clap)

STRUCT(HitObject,
    VAR_INT(, x)
    VAR_INT(, y)
    VAR_INT(, time)
    VAR_STRUCT(, type, HitObjectType)
    VAR_STRUCT(, hitSound ,HitSound)
)
STRUCT_STREAM_OPS(HitObject, x, y, time, type, hitSound)

// https://osu.ppy.sh/wiki/en/Client/File_formats/osu_%28file_format%29
CONFIG(Difficulty,
    VAR_UINT_P(, formatVersion, "osu file format v")
    SECTION(general,
        VAR_STRING(.general, audioFilename)
        VAR_UINT_D(.general, audioLeadIn, 0)
        VAR_INT_D(.general, previewTime, -1)
        VAR_ENUM_D(.general, countdown, Countdown, NORMAL)
        VAR_ENUM_D(.general, sampleSet, SampleSet, NORMAL)
        VAR_FLOAT_D(.general, stackLeniency, 0.7)
        VAR_ENUM_D(.general, mode, Mode, STANDARD)
        VAR_BOOL_D(.general, letterboxInBreaks, false)
        VAR_BOOL_D(.general, useSkinSprites, false)
        VAR_ENUM_D(.general, overlayPosition, OverlayPosition, NO_CHANGE)
        VAR_STRING(.general, skinPreference)
        VAR_BOOL_D(.general, epilepsyWarning, false)
        VAR_UINT_D(.general, countdownOffset, 0)
        VAR_BOOL_D(.general, specialStyle, false)
        VAR_BOOL_D(.general, widescreenStoryboard, false)
        VAR_BOOL_D(.general, sampleMatchPlaybackRate, false)
    )
    SECTION(editor,
        VAR_LIST_SEP(.editor, bookmarks, uint, ',')
        VAR_FLOAT(.editor, distanceSpacing)
        VAR_UINT(.editor, beatDivisor)
        VAR_UINT(.editor, gridSize)
        VAR_FLOAT(.editor, timelineZoom)
    )
    SECTION(metadata,
        VAR_STRING(.metadata, title)
        VAR_STRING(.metadata, titleUnicode)
        VAR_STRING(.metadata, artist)
        VAR_STRING(.metadata, artistUnicode)
        VAR_STRING(.metadata, creator)
        VAR_STRING(.metadata, version)
        VAR_STRING(.metadata, source)
        VAR_LIST_SEP_P(.metadata, tags, std::string, ' ', "Tags:")
        VAR_UINT(.metadata, beatmapID)
        VAR_UINT(.metadata, beatmapSetID)
    )
    SECTION(difficulty,
        VAR_FLOAT_P(.difficulty, hpDrainRate, "HPDrainRate:")
        VAR_FLOAT(.difficulty, circleSize)
        VAR_FLOAT(.difficulty, overallDifficulty)
        VAR_FLOAT(.difficulty, approachRate)
        VAR_FLOAT(.difficulty, sliderMultiplier)
        VAR_FLOAT(.difficulty, sliderTickRate)
    )
    SECTION(timingPoints,
        VAR_LIST(.timingPoints, timingPoints, TimingPoint)
    )
    SECTION(colours,
        VAR_LIST_NUMBERED(.colours, combo, sf::Color)
        VAR_COLOUR(.colours, sliderTrackOverride)
        VAR_COLOUR(.colours, sliderBorder)
    )

    SECTION(hitObjects,
        VAR_LIST(.hitObjects, hitObjects, HitObject)
    )
)
STRUCT_OUTPUT_STREAM_OP(Difficulty,
    formatVersion,
    general.audioFilename,
    general.audioLeadIn,
    general.previewTime,
    general.countdown,
    general.sampleSet,
    general.stackLeniency,
    general.mode,
    general.letterboxInBreaks,
    general.useSkinSprites,
    general.overlayPosition,
    general.skinPreference,
    general.epilepsyWarning,
    general.countdownOffset,
    general.specialStyle,
    general.widescreenStoryboard,
    general.sampleMatchPlaybackRate,
    editor.bookmarks,
    editor.distanceSpacing,
    editor.beatDivisor,
    editor.gridSize,
    editor.timelineZoom,
    metadata.title,
    metadata.titleUnicode,
    metadata.artist,
    metadata.artistUnicode,
    metadata.creator,
    metadata.version,
    metadata.source,
    metadata.tags,
    metadata.beatmapID,
    metadata.beatmapSetID,
    difficulty.hpDrainRate,
    difficulty.circleSize,
    difficulty.overallDifficulty,
    difficulty.approachRate,
    difficulty.sliderMultiplier,
    difficulty.sliderTickRate,
    timingPoints.timingPoints,
    colours.combo,
    colours.sliderTrackOverride,
    colours.sliderBorder,
    hitObjects.hitObjects
)

#ifdef CONFIG_DEFINED
#undef CONFIG
#undef SECTION

#undef VAR_UINT
#undef VAR_UINT_P
#undef VAR_UINT_D

#undef VAR_INT
#undef VAR_INT_P
#undef VAR_INT_D

#undef VAR_STRING
#undef VAR_STRING_P
#undef VAR_STRING_D

#undef VAR_BOOL
#undef VAR_BOOL_P
#undef VAR_BOOL_D

#undef VAR_FLOAT
#undef VAR_FLOAT_P
#undef VAR_FLOAT_D

#undef VAR_COLOUR
#undef VAR_COLOUR_P
#undef VAR_COLOUR_D

#undef ENUM
#undef VAR_ENUM
#undef VAR_ENUM_P
#undef VAR_ENUM_D

#undef STRUCT
#undef VAR_STRUCT
#undef VAR_STRUCT_P
#undef VAR_STRUCT_D

#undef STRUCT_INPUT_STREAM_OP
#undef STRUCT_OUTPUT_STREAM_OP
#undef STRUCT_STREAM_OPS

#undef VAR_LIST
#undef VAR_LIST_SEP
#undef VAR_LIST_SEP_P
#undef VAR_LIST_NUMBERED
#endif // CONFIG_DEFINED