Fix OpenRCT2#2287: Sound not disabled when starting without focus

Defer calling `PlayTitleMusic()` the first time when OpenRCT2 starts until
after SDL events have been polled. This allows the code to process focus
events to mute the audio before the title music starts playing.

contributors.md

@@ -238,6 +238,7 @@ Appreciation for contributors who have provided substantial work, but are no lon
 * Jan Kelemen (jan-kelemen)
 * Cory Ye (CoryfY)
 * Karsten Van Fossan (karstenvanf)
+* Daniel Lightbourn (Daniel-Lightbourn)
 
 ## Toolchain
 * (Balletie) - macOS

src/openrct2/Context.cpp

@@ -1100,6 +1100,14 @@ namespace OpenRCT2
 
             _uiContext->ProcessMessages();
 
+            // Start the title music now that focus events have been processed.
+            if (static bool firstTime = true; firstTime)
+            {
+                firstTime = false;
+
+                OpenRCT2::Audio::PlayTitleMusic();
+            }
+
             if (_ticksAccumulator < kGameUpdateTimeMS)
             {
                 const auto sleepTimeSec = (kGameUpdateTimeMS - _ticksAccumulator);

src/openrct2/title/TitleScreen.cpp

@@ -133,7 +133,16 @@ void TitleScreen::Load()
     ContextOpenWindow(WindowClass::MainWindow);
     CreateWindows();
     TitleInitialise();
-    OpenRCT2::Audio::PlayTitleMusic();
+
+    // Defer the title music until window messages can be processed.
+    if (static bool firstTime = true; firstTime)
+    {
+        firstTime = false;
+    }
+    else
+    {
+        OpenRCT2::Audio::PlayTitleMusic();
+    }
 
     if (gOpenRCT2ShowChangelog)
     {