feat(sound): add SESound::SetMasterVolume

src/sound/SESound.cpp

@@ -715,6 +715,20 @@ void SESound::SetChannelGroupVolume(const char* name, float volume) {
     channelGroup->m_dirty = true;
 }
 
+void SESound::SetMasterVolume(float volume) {
+    if (!SESound::s_Initialized) {
+        return;
+    }
+
+    if (volume < 0.0f || volume > 1.0f) {
+        return;
+    }
+
+    auto masterChannelGroup = &SESound::s_ChannelGroups[0];
+    masterChannelGroup->m_volume = volume;
+    masterChannelGroup->m_dirty = true;
+}
+
 void SESound::CompleteLoad() {
     if (!this->m_internal) {
         return;

src/sound/SESound.hpp

@@ -39,6 +39,7 @@ class SESound {
         static void Log_Write(int32_t line, const char* file, FMOD_RESULT result, const char* fmt, ...);
         static void MuteChannelGroup(const char* name, bool mute);
         static void SetChannelGroupVolume(const char* name, float volume);
+        static void SetMasterVolume(float volume);
 
         // Public member functions
         void CompleteLoad();