Hoooly shit it seems to be working now

src/custom_sfml_audio/note_claps.cpp

@@ -2,6 +2,7 @@
 
 #include <SFML/Audio/SoundBuffer.hpp>
 #include <SFML/System/Time.hpp>
+#include <algorithm>
 #include <limits>
 #include <memory>
 #include <stdexcept>
@@ -96,6 +97,7 @@ std::shared_ptr<NoteClaps> NoteClaps::with(
 
 bool NoteClaps::onGetData(sf::SoundStream::Chunk& data) {
     if (timing != nullptr and notes != nullptr) {
+        long_note_ends.clear();
         const auto absolute_buffer_start = first_sample_of_next_buffer;
         const std::int64_t absolute_buffer_end = first_sample_of_next_buffer + static_cast<std::int64_t>(output_buffer.size());
         const auto start_time = samples_to_music_time(absolute_buffer_start);
@@ -112,6 +114,16 @@ bool NoteClaps::onGetData(sf::SoundStream::Chunk& data) {
             }
         };
 
+        const auto add_long_note_end = [&](const Fraction beat){
+            const auto time = timing->time_at(beat); 
+            const auto sample = static_cast<std::int64_t>(music_time_to_samples(time));
+            // we don't want claps that *start* at the end sample since
+            // absolute_buffer_end is an *exculsive* end
+            if (sample < absolute_buffer_end) {
+                long_note_ends.insert(sample);
+            }
+        };
+
         const auto add_claps_of_note = VariantVisitor {
             [&](const better::TapNote& t) {
                 count_clap_at(t.get_time());
@@ -119,7 +131,7 @@ bool NoteClaps::onGetData(sf::SoundStream::Chunk& data) {
             [&](const better::LongNote& l) {
                 count_clap_at(l.get_time());
                 if (play_long_note_ends) {
-                    count_clap_at(l.get_end());
+                    add_long_note_end(l.get_end());
                 }
             },
         };
@@ -130,6 +142,11 @@ bool NoteClaps::onGetData(sf::SoundStream::Chunk& data) {
         if (not play_chords) {
             std::erase_if(notes_at_sample, [](const auto& it){return it.second > 1;});
         }
+        if (play_long_note_ends) {
+            for (const auto& it : long_note_ends) {
+                notes_at_sample[it] = 1;
+            }
+        }
         copy_sample_at_points(
             sample,
             output_buffer,

src/custom_sfml_audio/note_claps.hpp

@@ -52,6 +52,7 @@ protected:
 
 private:
     std::map<std::int64_t, unsigned int> notes_at_sample;
+    std::set<std::int64_t> long_note_ends;
     bool play_chords = true;
     bool play_long_note_ends = false;
 

src/custom_sfml_audio/synced_sound_streams.cpp

@@ -63,16 +63,20 @@ SyncedSoundStreams::~SyncedSoundStreams() {
     awaitStreamingThread();
 }
 
-void SyncedSoundStreams::change_streams(std::function<void()> callback) {
+void SyncedSoundStreams::change_streams(
+    std::function<void()> callback,
+    std::optional<float> new_pitch
+) {
     const auto oldStatus = getStatus();
-    pause();
-    setPitch(pitch);
     const auto position = getPlayingOffset();
     stop();
 
     callback();
 
     reload_sources();
+    if (new_pitch) {
+        setPitch(*new_pitch);
+    }
     setPlayingOffset(position);
     if (oldStatus == sf::SoundSource::Playing) {
         play();
@@ -81,17 +85,21 @@ void SyncedSoundStreams::change_streams(std::function<void()> callback) {
 
 void SyncedSoundStreams::update_streams(
     const std::map<std::string, NewStream>& to_add,
-    const std::initializer_list<std::string>& to_remove
+    const std::initializer_list<std::string>& to_remove,
+    std::optional<float> new_pitch
 ) {
-    change_streams([&](){
-        for (const auto& name : to_remove) {
-            remove_stream_internal(name);
-        }
-        for (const auto& [name, new_stream] : to_add) {
-            remove_stream_internal(name);
-            add_stream_internal(name, new_stream);
-        }
-    });
+    change_streams(
+        [&](){
+            for (const auto& name : to_remove) {
+                remove_stream_internal(name);
+            }
+            for (const auto& [name, new_stream] : to_add) {
+                remove_stream_internal(name);
+                add_stream_internal(name, new_stream);
+            }
+        },
+        new_pitch
+    );
 }
 
 

src/custom_sfml_audio/synced_sound_streams.hpp

@@ -59,7 +59,8 @@ public:
 
     void update_streams(
         const std::map<std::string, NewStream>& to_add,
-        const std::initializer_list<std::string>& to_remove = {}
+        const std::initializer_list<std::string>& to_remove = {},
+        std::optional<float> new_pitch = {}
     );
     void add_stream(const std::string& name, NewStream s);
     void remove_stream(const std::string& name);
@@ -86,7 +87,10 @@ protected:
     void setProcessingInterval(sf::Time interval);
 
 private:
-    void change_streams(std::function<void()> callback);
+    void change_streams(
+        std::function<void()> callback,
+        std::optional<float> new_pitch = {}
+    );
     void add_stream_internal(const std::string& name, NewStream s);
     void remove_stream_internal(const std::string& name);
     void streamData();

src/editor_state.cpp

@@ -216,10 +216,7 @@ void EditorState::set_pitch(float pitch) {
         chord_claps = chord_claps->with_pitch(pitch);
         update[chord_clap_stream] = {chord_claps, true};
     }
-    // setPitch has to be called before update_streams to avoid problems in
-    // the internal call to setPlaybackPosition
-    audio.setPitch(pitch);
-    audio.update_streams(update);
+    audio.update_streams(update, {}, pitch);
 }
 
 float EditorState::get_pitch() const {