SSS operand implemented

src/scripting/tsc/text_script.rs

@@ -1637,11 +1637,10 @@ impl TextScriptVM {
                 exec_state = TextScriptExecutionState::Running(event, cursor.position() as u32);
             }
             TSCOpCode::SSS => {
-                let _freq = read_cur_varint(&mut cursor)?;
+                let freq = read_cur_varint(&mut cursor)? as f32 / 2205.0;
 
-                // todo change freq
-                state.sound_manager.loop_sfx(40);
-                state.sound_manager.loop_sfx(41);
+                state.sound_manager.loop_sfx_freq(40, freq);
+                state.sound_manager.loop_sfx_freq(41, freq);
 
                 exec_state = TextScriptExecutionState::Running(event, cursor.position() as u32);
             }

src/sound/mod.rs

@@ -122,6 +122,13 @@ impl SoundManager {
         let _ = self.tx.send(PlaybackMessage::LoopSample(id));
     }
 
+    pub fn loop_sfx_freq(&self, id: u8, freq: f32) {
+        if self.no_audio {
+            return;
+        }
+        let _ = self.tx.send(PlaybackMessage::LoopSampleFreq(id, freq));
+    }
+
     pub fn stop_sfx(&self, id: u8) {
         if self.no_audio {
             return;
@@ -394,6 +401,7 @@ pub(in crate::sound) enum PlaybackMessage {
     PlayOggSongMultiPart(Box<OggStreamReader<File>>, Box<OggStreamReader<File>>),
     PlaySample(u8),
     LoopSample(u8),
+    LoopSampleFreq(u8, f32),
     StopSample(u8),
     SetSpeed(f32),
     SaveState,
@@ -520,6 +528,9 @@ where
                     Ok(PlaybackMessage::LoopSample(id)) => {
                         pixtone.loop_sfx(id);
                     }
+                    Ok(PlaybackMessage::LoopSampleFreq(id, freq)) => {
+                        pixtone.loop_sfx_freq(id, freq);
+                    }
                     Ok(PlaybackMessage::StopSample(id)) => {
                         pixtone.stop_sfx(id);
                     }

src/sound/pixtone.rs

@@ -182,6 +182,7 @@ pub struct PlaybackState {
     pos: f32,
     tag: u32,
     looping: bool,
+    freq: f32,
 }
 
 pub struct PixTonePlayback {
@@ -226,7 +227,7 @@ impl PixTonePlayback {
             }
         }
 
-        self.playback_state.push(PlaybackState { id, pos: 0.0, tag: 0, looping: false });
+        self.playback_state.push(PlaybackState { id, pos: 0.0, tag: 0, looping: false, freq: 1.0 });
     }
 
     pub fn loop_sfx(&mut self, id: u8) {
@@ -237,7 +238,18 @@ impl PixTonePlayback {
             }
         }
 
-        self.playback_state.push(PlaybackState { id, pos: 0.0, tag: 0, looping: true });
+        self.playback_state.push(PlaybackState { id, pos: 0.0, tag: 0, looping: true, freq: 1.0 });
+    }
+
+    pub fn loop_sfx_freq(&mut self, id: u8, freq: f32) {
+        for state in &mut self.playback_state {
+            if state.id == id && state.tag == 0 {
+                state.looping = true;
+                return;
+            }
+        }
+
+        self.playback_state.push(PlaybackState { id, pos: 0.0, tag: 0, looping: true, freq });
     }
 
     pub fn stop_sfx(&mut self, id: u8) {
@@ -247,7 +259,7 @@ impl PixTonePlayback {
     }
 
     pub fn play_concurrent(&mut self, id: u8, tag: u32) {
-        self.playback_state.push(PlaybackState { id, pos: 0.0, tag, looping: false });
+        self.playback_state.push(PlaybackState { id, pos: 0.0, tag, looping: false, freq: 1.0 });
     }
 
     pub fn mix(&mut self, dst: &mut [u16], sample_rate: f32) {
@@ -285,7 +297,7 @@ impl PixTonePlayback {
                     let sam = (*result ^ 0x8000) as i16;
                     *result = sam.saturating_add(s as i16) as u16 ^ 0x8000;
 
-                    state.pos += delta;
+                    state.pos += delta * state.freq;
                 }
 
                 if remove {