rename game setting

demo/src/main.cpp

@@ -15,7 +15,7 @@
 int main() {
   Tyra::EngineOptions options;
 
-  if (Demo::IS_REAL_PS2) {
+  if (Demo::IS_REAL_PS2_VIA_USB) {
     options.writeLogsToFile = true;
     options.loadUsbDriver = true;
   }

demo/src/states/game/enemy/enemy_manager.cpp

@@ -45,7 +45,7 @@ EnemyManager::EnemyManager(Engine* engine, const Heightmap& heightmap) {
   auto* death = engine->audio.adpcm.load(
       FileUtils::fromCwd("game/models/zombie/death.adpcm"));
 
-  const int enemyCount = IS_REAL_PS2 ? 8 : 12;
+  const int enemyCount = IS_REAL_PS2_VIA_USB ? 8 : 12;
   for (int i = 0; i < enemyCount; i++) {
     EnemyInfo info;
     info.adpcmChannel = 9 + i;

demo/src/states/game/game_state.cpp

@@ -45,7 +45,7 @@ void GameState::onStart() {
 
   engine->audio.song.setVolume(85);
 
-  if (IS_REAL_PS2) engine->renderer.setFrameLimit(false);
+  if (IS_REAL_PS2_VIA_USB) engine->renderer.setFrameLimit(false);
 
   initialized = true;
 }