Chamges to make Mac bundle

- Removed subdir for SDL_mixer.h (shouldn't need it)
- Changed SDL BasePath to SDL_PrefPath on Mac. Files can be found in bundle in '~/Library/Application Support/Akhenaten'

Author: tomkidd

src/platform/akhenaten.cpp

@@ -149,7 +149,11 @@ static bool pre_init(pcstr custom_data_dir) {
 #if !defined(GAME_PLATFORM_ANDROID)
     // ...then from the executable base path...
     static_assert(SDL_VERSION_ATLEAST(2, 0, 1), "SDL version too old");
+#if defined(GAME_PLATFORM_MACOSX)
+    char* tmp_path = SDL_GetPrefPath("", "Akhenaten");
+#else
     char* tmp_path = SDL_GetBasePath();
+#endif
     bstring512 base_path(tmp_path);
     SDL_free(tmp_path);
     if (pre_init_dir_attempt(base_path, "Attempting to load game from base path %s")) {

src/platform/prefs.cpp

@@ -14,8 +14,12 @@ static FILE* open_pref_file(const char* filename, const char* mode) {
     static_assert(SDL_VERSION_ATLEAST(2, 0, 1), "SDL version too old");
 #if defined(GAME_PLATFORM_ANDROID)
     bstring512 dir_path = SDL_AndroidGetExternalStoragePath();
+#else
+#if defined(GAME_PLATFORM_MACOSX)
+    char* tmp_path = SDL_GetPrefPath("", "Akhenaten");
 #else
     char* tmp_path = SDL_GetBasePath();
+#endif
     bstring512 dir_path(tmp_path);
     SDL_free(tmp_path);
 #endif

src/sound/sound.cpp

@@ -1,10 +1,6 @@
 #include <SDL.h>
 
-#ifdef __APPLE__
-#include <SDL2_mixer/SDL_mixer.h>
-#else
 #include <SDL_mixer.h>
-#endif
 
 #include "sound/sound.h"
 #include "core/game_environment.h"