choose

type Chart struct {
	MusicFS  fs.FS
	Base     string // For comparing fsys.
	Filename string
	Hash     string // md5 with 16 bytes

	mode.ChartHeader
	Duration         int32
	MainBPM          float64
	MinBPM           float64
	MaxBPM           float64
	AddAtTime        time.Time
	LastUpdateAtTime time.Time
	Level            float64
	NoteCounts       []int
	// Attributes can be added by user, such as
	// Genre, Language, Levels from game clients
	Attributes map[string]any
}

type Node struct {
	Parent                   *Node
	PrevSibling, NextSibling *Node
	FirstChild, LastChild    *Node

	Type NodeType
	Data string
}

type NodeType int

type PreviewMusicPlayer struct {
	*audios.MusicPlayer
	// MusicVolume *float64
	StartTime  time.Time
	EffectMode int
}

type Scene struct {
	*scene.Config
	*scene.Asset

	ctrl.UIKeyListener

	PreviewMusicPlayer

	KeyHandleMusicVolume          func() bool
	KeyHandleSoundVolume          func() bool
	KeyHandleMusicOffset          func() bool
	KeyHandleBackgroundBrightness func() bool
	KeyHandleDebugPrint           func() bool

	// Todo: key handle mode and sub mode.
	// Todo: add 'NoRepeat' option to KeyHandle.
	// KeyHandleMode       func() bool
	// KeyHandleSubMode    func() bool
	KeyHandleSpeedScale func() bool
	// contains filtered or unexported fields
}