From 696ab0aadc346f1046f35419a558c291097c521f Mon Sep 17 00:00:00 2001
From: Freya Murphy <freya@freyacat.org>
Date: Sat, 22 Nov 2025 00:12:34 -0500
Subject: audio: add temp changing

---
 graphics/src/audio/program.rs | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'graphics/src/audio/program.rs')

diff --git a/graphics/src/audio/program.rs b/graphics/src/audio/program.rs
index f31be06..91f0608 100644
--- a/graphics/src/audio/program.rs
+++ b/graphics/src/audio/program.rs
@@ -1,5 +1,5 @@
 use crate::audio::{
-	Channels,
+	AUDIO_FPS, Channels,
 	channel::{Channel, DutyCycle},
 	parse,
 };
@@ -16,6 +16,7 @@ pub enum ChanSpec {
 pub enum Instruction {
 	Pause,
 	Jump(usize),
+	Tempo(u32),
 	SetVolume(ChanSpec, u8),
 	SetPitch(ChanSpec, u8),
 	SetPulseDutyA(DutyCycle),
@@ -98,11 +99,14 @@ impl Program {
 		match ins {
 			I::Pause => {
 				// pause execution until next `exec` call
-				self.pause = self.tempo / 60;
+				self.pause = (AUDIO_FPS * 4) / self.tempo.clamp(1, 240);
 			}
 			I::Jump(pc) => {
 				self.pc = pc;
 			}
+			I::Tempo(tempo) => {
+				self.tempo = tempo;
+			}
 			I::SetVolume(chan_spec, volume) => {
 				// set the volume (amplitude) on a given channel
 				use ChanSpec as C;
-- 
cgit v1.2.3-freya