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LD53/src/music.rs

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use crate::wasm4::*;
const FRAMES_PER_SIXTEENTH: f32 = 6.0f32;
const SLOWDOWN_RATE: f32 = 0.001f32;
const SLOWDOWN_REVERT_RATE: f32 = 0.002f32;
const SLOWDOWN_MIN: f32 = 0.6f32;
const SPEEDUP_RATE: f32 = 1.00f32;
const SPEEDUP_REVERT_RATE: f32 = 0.1f32;
const SPEEDUP_MAX: f32 = 1.6f32;
#[derive(Debug, Copy, Clone, PartialEq)]
pub enum Pitch {
C0,
D0,
E0,
F0,
G0,
A0,
B0,
C1,
D1,
E1,
F1,
G1,
A1,
B1,
C2,
D2,
E2,
F2,
G2,
A2,
B2,
C3,
D3,
E3,
F3,
G3,
A3,
B3,
C4,
D4,
E4,
F4,
G4,
A4,
B4,
C5,
D5,
E5,
F5,
G5,
A5,
B5,
C6,
D6,
E6,
F6,
G6,
A6,
B6,
C7,
D7,
E7,
F7,
G7,
A7,
B7,
C8,
D8,
E8,
F8,
G8,
A8,
B8,
}
impl Into<f32> for Pitch {
fn into(self) -> f32 {
match self {
Pitch::C0 => 16.35,
Pitch::D0 => 17.32,
Pitch::E0 => 20.6,
Pitch::F0 => 21.83,
Pitch::G0 => 24.5,
Pitch::A0 => 27.5,
Pitch::B0 => 30.87,
Pitch::C1 => 32.70,
Pitch::D1 => 36.71,
Pitch::E1 => 41.2,
Pitch::F1 => 43.65,
Pitch::G1 => 49.0,
Pitch::A1 => 55.0,
Pitch::B1 => 61.74,
Pitch::C2 => 65.41,
Pitch::D2 => 73.42,
Pitch::E2 => 82.41,
Pitch::F2 => 87.31,
Pitch::G2 => 98.0,
Pitch::A2 => 110.0,
Pitch::B2 => 123.47,
Pitch::C3 => 130.81,
Pitch::D3 => 146.83,
Pitch::E3 => 164.81,
Pitch::F3 => 174.61,
Pitch::G3 => 196.0,
Pitch::A3 => 220.0,
Pitch::B3 => 246.94,
Pitch::C4 => 261.63,
Pitch::D4 => 293.66,
Pitch::E4 => 329.63,
Pitch::F4 => 349.23,
Pitch::G4 => 392.0,
Pitch::A4 => 440.0,
Pitch::B4 => 493.88,
Pitch::C5 => 523.25,
Pitch::D5 => 587.33,
Pitch::E5 => 659.25,
Pitch::F5 => 698.46,
Pitch::G5 => 783.99,
Pitch::A5 => 880.0,
Pitch::B5 => 987.77,
Pitch::C6 => 1046.5,
Pitch::D6 => 1174.66,
Pitch::E6 => 1318.51,
Pitch::F6 => 1396.91,
Pitch::G6 => 1567.98,
Pitch::A6 => 1760.00,
Pitch::B6 => 1975.53,
Pitch::C7 => 2093.0,
Pitch::D7 => 2349.32,
Pitch::E7 => 2637.02,
Pitch::F7 => 2793.83,
Pitch::G7 => 3135.96,
Pitch::A7 => 3520.00,
Pitch::B7 => 3951.07,
Pitch::C8 => 4186.01,
Pitch::D8 => 4698.63,
Pitch::E8 => 5274.04,
Pitch::F8 => 5587.65,
Pitch::G8 => 6271.93,
Pitch::A8 => 7040.0,
Pitch::B8 => 7902.13,
}
}
}
impl Pitch {
pub fn to_u32(self) -> u32 {
(Into::<f32>::into(self) + 0.5f32) as u32
}
pub fn to_u32_mult(self, mult: f32) -> u32 {
(Into::<f32>::into(self) * mult + 0.5f32) as u32
}
}
#[derive(Debug, Copy, Clone, PartialEq)]
enum Duration {
SIXTEENTH,
EIGHTH,
QUARTER,
HALF,
FULL,
}
impl Into<f32> for Duration {
fn into(self) -> f32 {
match self {
Duration::SIXTEENTH => 1f32,
Duration::EIGHTH => 2f32,
Duration::QUARTER => 4f32,
Duration::HALF => 8f32,
Duration::FULL => 16f32,
}
}
}
const PULSE1_NOTES: [(Pitch, Duration, u8); 63] = [
// m1
(Pitch::G4, Duration::EIGHTH, 40),
(Pitch::E4, Duration::EIGHTH, 40),
(Pitch::D4, Duration::EIGHTH, 40),
(Pitch::F4, Duration::EIGHTH, 40),
(Pitch::E4, Duration::EIGHTH, 40),
(Pitch::C6, Duration::EIGHTH, 40),
(Pitch::B5, Duration::EIGHTH, 40),
(Pitch::G5, Duration::EIGHTH, 40),
// m2
(Pitch::D5, Duration::EIGHTH, 40),
(Pitch::G5, Duration::EIGHTH, 40),
(Pitch::A5, Duration::EIGHTH, 40),
(Pitch::A4, Duration::EIGHTH, 40),
(Pitch::G5, Duration::EIGHTH, 40),
(Pitch::G4, Duration::EIGHTH, 40),
(Pitch::G4, Duration::QUARTER, 40),
// m3
(Pitch::A4, Duration::EIGHTH, 40),
(Pitch::G4, Duration::EIGHTH, 40),
(Pitch::F4, Duration::EIGHTH, 40),
(Pitch::E4, Duration::EIGHTH, 40),
(Pitch::G4, Duration::EIGHTH, 40),
(Pitch::F4, Duration::EIGHTH, 40),
(Pitch::E4, Duration::EIGHTH, 40),
(Pitch::D4, Duration::EIGHTH, 40),
// m4
(Pitch::C4, Duration::EIGHTH, 40),
(Pitch::C5, Duration::EIGHTH, 40),
(Pitch::D5, Duration::EIGHTH, 40),
(Pitch::G5, Duration::EIGHTH, 40),
(Pitch::C4, Duration::EIGHTH, 40),
(Pitch::G5, Duration::EIGHTH, 40),
(Pitch::C6, Duration::EIGHTH, 40),
(Pitch::G5, Duration::EIGHTH, 40),
// m5
(Pitch::A4, Duration::EIGHTH, 40),
(Pitch::B4, Duration::EIGHTH, 40),
(Pitch::C5, Duration::EIGHTH, 40),
(Pitch::E5, Duration::EIGHTH, 40),
(Pitch::G4, Duration::EIGHTH, 40),
(Pitch::A4, Duration::EIGHTH, 40),
(Pitch::B4, Duration::EIGHTH, 40),
(Pitch::D5, Duration::EIGHTH, 40),
// m6
(Pitch::C5, Duration::EIGHTH, 40),
(Pitch::B4, Duration::EIGHTH, 40),
(Pitch::A4, Duration::EIGHTH, 40),
(Pitch::G4, Duration::EIGHTH, 40),
(Pitch::B5, Duration::EIGHTH, 40),
(Pitch::C5, Duration::EIGHTH, 40),
(Pitch::G5, Duration::EIGHTH, 40),
(Pitch::C5, Duration::EIGHTH, 40),
// m7
(Pitch::A5, Duration::EIGHTH, 40),
(Pitch::G5, Duration::EIGHTH, 40),
(Pitch::F5, Duration::EIGHTH, 40),
(Pitch::E5, Duration::EIGHTH, 40),
(Pitch::D5, Duration::EIGHTH, 40),
(Pitch::C5, Duration::EIGHTH, 40),
(Pitch::B4, Duration::EIGHTH, 40),
(Pitch::A4, Duration::EIGHTH, 40),
// m8
(Pitch::G4, Duration::EIGHTH, 40),
(Pitch::F4, Duration::EIGHTH, 40),
(Pitch::E4, Duration::EIGHTH, 40),
(Pitch::D4, Duration::EIGHTH, 40),
(Pitch::C4, Duration::EIGHTH, 40),
(Pitch::G4, Duration::EIGHTH, 40),
(Pitch::C5, Duration::EIGHTH, 40),
(Pitch::C4, Duration::EIGHTH, 40),
];
const TRI_NOTES: [(Pitch, Duration, u8); 37] = [
// m1
(Pitch::E4, Duration::QUARTER, 40),
(Pitch::G4, Duration::QUARTER, 40),
(Pitch::C4, Duration::QUARTER, 40),
(Pitch::G4, Duration::QUARTER, 40),
// m2
(Pitch::F5, Duration::QUARTER, 40),
(Pitch::A4, Duration::QUARTER, 40),
(Pitch::A4, Duration::QUARTER, 40),
(Pitch::G5, Duration::QUARTER, 40),
// m3
(Pitch::F5, Duration::QUARTER, 40),
(Pitch::G5, Duration::QUARTER, 40),
(Pitch::C5, Duration::QUARTER, 40),
(Pitch::G5, Duration::QUARTER, 40),
// m4
(Pitch::B4, Duration::QUARTER, 40),
(Pitch::G5, Duration::QUARTER, 40),
(Pitch::C4, Duration::EIGHTH, 40),
(Pitch::G4, Duration::EIGHTH, 40),
(Pitch::C4, Duration::QUARTER, 40),
// m5
(Pitch::A4, Duration::QUARTER, 40),
(Pitch::A4, Duration::QUARTER, 40),
(Pitch::B4, Duration::EIGHTH, 40),
(Pitch::A4, Duration::EIGHTH, 40),
(Pitch::B4, Duration::EIGHTH, 40),
(Pitch::E5, Duration::EIGHTH, 40),
// m6
(Pitch::C5, Duration::QUARTER, 40),
(Pitch::E5, Duration::QUARTER, 40),
(Pitch::D5, Duration::QUARTER, 40),
(Pitch::C5, Duration::QUARTER, 40),
// m7
(Pitch::A5, Duration::QUARTER, 40),
(Pitch::E5, Duration::QUARTER, 40),
(Pitch::A5, Duration::QUARTER, 40),
(Pitch::E5, Duration::QUARTER, 40),
// m8
(Pitch::G5, Duration::QUARTER, 40),
(Pitch::D5, Duration::QUARTER, 40),
(Pitch::C5, Duration::EIGHTH, 40),
(Pitch::B4, Duration::EIGHTH, 40),
(Pitch::C5, Duration::EIGHTH, 40),
(Pitch::C5, Duration::EIGHTH, 40),
];
pub struct Music {
started: bool,
pulse1_time: f32,
pulse1_idx: usize,
tri_time: f32,
tri_idx: usize,
factor: f32,
factor_slowing: Option<bool>,
factor_speeding: Option<bool>,
game_over: bool,
}
impl Music {
pub fn new() -> Self {
Self {
started: false,
pulse1_time: 0f32,
pulse1_idx: 0,
tri_time: 0f32,
tri_idx: 0,
factor: 1f32,
factor_slowing: None,
factor_speeding: None,
game_over: false,
}
}
pub fn reset(&mut self) {
self.started = false;
self.pulse1_time = 0f32;
self.pulse1_idx = 0;
self.tri_time = 0f32;
self.tri_idx = 0;
self.factor = 1f32;
self.factor_slowing = None;
self.factor_speeding = None;
self.game_over = false;
}
pub fn gameover(&mut self) {
self.game_over = true;
}
pub fn speed_up(&mut self) {
self.factor_slowing = None;
//self.factor_speeding = Some(true);
self.factor_speeding = None;
self.factor = 1f32;
crate::tone(
Pitch::C2.to_u32() | (Pitch::C7.to_u32() << 16),
30 | (30 << 8),
40,
TONE_PULSE2,
);
}
pub fn slow_down(&mut self) {
self.factor_slowing = Some(true);
self.factor_speeding = None;
self.factor = 1f32;
}
pub fn damaged(&self) {
if self.started {
crate::tone(
Pitch::D5.to_u32() | (Pitch::D1.to_u32() << 16),
30 << 8,
60,
TONE_NOISE,
)
}
}
fn get_factor(&self) -> f32 {
self.factor
}
pub fn start(&mut self) {
self.started = true;
}
pub fn update(&mut self) {
if !self.started {
return;
}
if self.game_over {
self.factor -= SLOWDOWN_RATE;
if self.factor <= 0f32 {
self.reset();
}
} else {
if let Some(not_reverting) = &mut self.factor_slowing {
if *not_reverting {
self.factor -= SLOWDOWN_RATE;
if self.factor <= SLOWDOWN_MIN {
*not_reverting = false;
self.factor = SLOWDOWN_MIN;
}
} else {
self.factor += SLOWDOWN_REVERT_RATE;
if self.factor >= 1f32 {
self.factor = 1f32;
self.factor_slowing.take();
}
}
} else if let Some(not_reverting) = &mut self.factor_speeding {
if *not_reverting {
self.factor += SPEEDUP_RATE;
if self.factor >= SPEEDUP_MAX {
*not_reverting = false;
self.factor = SPEEDUP_MAX;
}
} else {
self.factor -= SPEEDUP_REVERT_RATE;
if self.factor <= 1f32 {
self.factor = 1f32;
self.factor_speeding.take();
}
}
}
}
if self.pulse1_idx < PULSE1_NOTES.len() {
if self.pulse1_time <= 0f32 {
let frames =
Into::<f32>::into(PULSE1_NOTES[self.pulse1_idx].1) * FRAMES_PER_SIXTEENTH;
// / self.get_factor();
crate::tone(
PULSE1_NOTES[self.pulse1_idx]
.0
.to_u32_mult(self.get_factor()),
((frames + 0.5f32) as u32) << 8,
PULSE1_NOTES[self.pulse1_idx].2 as u32,
TONE_PULSE1,
);
self.pulse1_time += frames;
self.pulse1_idx += 1;
}
}
self.pulse1_time -= self.get_factor();
//self.pulse1_time -= 1f32;
if self.tri_idx < TRI_NOTES.len() {
if self.tri_time <= 0f32 {
let frames = Into::<f32>::into(TRI_NOTES[self.tri_idx].1) * FRAMES_PER_SIXTEENTH;
// / self.get_factor();
crate::tone(
TRI_NOTES[self.tri_idx].0.to_u32_mult(self.get_factor()),
((frames + 0.5f32) as u32) << 8,
TRI_NOTES[self.tri_idx].2 as u32,
TONE_TRIANGLE,
);
self.tri_time += frames;
self.tri_idx += 1;
}
}
self.tri_time -= self.get_factor();
//self.tri_time -= 1f32;
if self.pulse1_idx >= PULSE1_NOTES.len()
&& self.tri_idx >= TRI_NOTES.len()
&& self.pulse1_time <= 0f32
&& self.tri_time <= 0f32
{
self.pulse1_idx = 0;
self.tri_idx = 0;
}
}
}
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