sim

type Faded struct {
	// Real-time timestamp when the aircraft disappeared.
	Timestamp time.Time
	// Mission time when the aircraft disappeared.
	MissionTimestamp time.Time
	// UnitID of the aircraft that disappeared.
	UnitID uint32
}

type Sim interface {
	// Stream aircraft updates from the sim to the provided channels.
	// The first channel receives updates for active aircraft.
	// The second channel receives messages when an aircraft disappears.
	// This function blocks until the context is cancelled.
	Stream(context.Context, chan<- Updated, chan<- Faded)
	// Bullseye returns the coalition's bullseye center.
	Bullseye(coalitions.Coalition) orb.Point
	// Time returns the starting time of the mission.
	// This is useful for looking up magnetic variation.
	Time() time.Time
}

type Updated struct {
	// Labels contains the aircraft's identity.
	Labels trackfiles.Labels
	// Frame contains the aircraft's observed position data.
	Frame trackfiles.Frame
}