Interface FollowerState

Where the follower believes the performer is.

interface FollowerState {
    cursor: number;
    fit: TempoFit | null;
    fixedFit: TempoFit | null;
    heardAtCursor: HeardNote[];
    lastAttackMs: number | null;
    lostCount: number;
    pairs: TempoPair[];
    spreadMs: number | null;
    unexplained: UnexplainedAttack[];
}

Properties

cursor: number

Index of the last matched event, −1 before the first

fit: TempoFit | null

fixedFit: TempoFit | null

A set tempo: fit is always this, and timing is judged against it rather than the performer's own

heardAtCursor: HeardNote[]

Notes of the event at the cursor heard so far — the chord as far as it has been played

lastAttackMs: number | null

lostCount: number

Consecutive attacks whose notes matched no nearby position

Matched (position, time) pairs of the current run, oldest first

spreadMs: number | null

How far the recent matched events scatter around the fit, in milliseconds; null until three are in

Attacks since the last matched event that explained nothing, oldest first