Struct Wave 

pub struct Wave { /* private fields */ }

Channel 3’s settings, which play whatever load_wave last put in wave RAM.

There is no envelope here, and the volume is the four steps of WaveLevel.

Implementations

impl Wave

pub const fn new(level: WaveLevel) -> Self

The wave at level, at the lowest period.

pub const fn note(self, note: Note, octave: u8) -> Self

Tune to note at octave.

This channel reads its waveform half as fast as a pulse channel, so its range sits an octave below theirs: C1 through B4 within about five cents, nothing lower to reach, and the same drift above.

pub const fn at_period(self, period: u16) -> Self

Tune to a period value, which counts up rather than down: the larger it is, the higher the pitch. At most $7FF.

pub const fn length(self, ticks: u16) -> Self

Stop the channel after ticks of a 256 Hz count, at most 256.

pub fn play(&self)

Play on channel 3.

Triggering the channel while it is already playing can corrupt wave RAM on an original Game Boy. stop first avoids that and costs a click.

pub fn retune(&self)

Change the pitch without starting the waveform over.

pub fn set_level(&self)

Change the output level without starting the waveform over.

Channel 3 has no envelope, so this is how its volume moves during a note.

Trait Implementations

impl Clone for Wave

fn clone(&self) -> Wave

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Wave

impl Eq for Wave

impl PartialEq for Wave

fn eq(&self, other: &Wave) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Wave