BACKENDS: Add init() to OSystem

backends/platform/androidsdl/androidsdl-main.cpp

@@ -35,7 +35,7 @@ int main(int argc, char *argv[]) {
 	assert(g_system);
 
 	// Pre initialize the backend
-	((OSystem_POSIX *)g_system)->init();
+	g_system->init();
 
 	// Invoke the actual ScummVM main entry point:
 	int res = scummvm_main(argc, argv);

backends/platform/dingux/main.cpp

@@ -32,7 +32,7 @@ int main(int argc, char* argv[]) {
 	g_system = new OSystem_SDL_Dingux();
 	assert(g_system);
 
-	((OSystem_SDL_Dingux *)g_system)->init();
+	g_system->init();
 
 #ifdef DYNAMIC_MODULES
 	PluginManager::instance().addPluginProvider(new SDLPluginProvider());

backends/platform/gph/gph-main.cpp

@@ -33,7 +33,7 @@ int main(int argc, char *argv[]) {
 	assert(g_system);
 
 	// Pre initialize the backend
-	((OSystem_GPH *)g_system)->init();
+	g_system->init();
 
 #ifdef DYNAMIC_MODULES
 	PluginManager::instance().addPluginProvider(new SDLPluginProvider());

backends/platform/maemo/main.cpp

@@ -30,7 +30,7 @@ int main(int argc, char* argv[]) {
 	g_system = new Maemo::OSystem_SDL_Maemo();
 	assert(g_system);
 
-	((Maemo::OSystem_SDL_Maemo *)g_system)->init();
+	g_system->init();
 
 #ifdef DYNAMIC_MODULES
 	PluginManager::instance().addPluginProvider(new SDLPluginProvider());

backends/platform/openpandora/op-main.cpp

@@ -33,7 +33,7 @@ int main(int argc, char *argv[]) {
 	assert(g_system);
 
 	// Pre initialize the backend
-	((OSystem_OP *)g_system)->init();
+	g_system->init();
 
 #ifdef DYNAMIC_MODULES
 	PluginManager::instance().addPluginProvider(new SDLPluginProvider());

backends/platform/samsungtv/main.cpp

@@ -40,7 +40,7 @@ extern "C" int Game_Main(char *path, char *) {
 	assert(g_system);
 
 	// Pre initialize the backend
-	((OSystem_POSIX *)g_system)->init();
+	g_system->init();
 
 #ifdef DYNAMIC_MODULES
 	PluginManager::instance().addPluginProvider(new SDLPluginProvider());

backends/platform/sdl/amigaos/amigaos-main.cpp

@@ -69,7 +69,7 @@ int main(int argc, char *argv[]) {
 	assert(g_system);
 
 	// Pre-initialize the backend.
-	((OSystem_AmigaOS *)g_system)->init();
+	g_system->init();
 
 #ifdef DYNAMIC_MODULES
 	PluginManager::instance().addPluginProvider(new SDLPluginProvider());

backends/platform/sdl/macosx/macosx-main.cpp

@@ -35,7 +35,7 @@ int main(int argc, char *argv[]) {
 	assert(g_system);
 
 	// Pre initialize the backend
-	((OSystem_MacOSX *)g_system)->init();
+	g_system->init();
 
 #ifdef DYNAMIC_MODULES
 	PluginManager::instance().addPluginProvider(new SDLPluginProvider());

backends/platform/sdl/posix/posix-main.cpp

@@ -35,7 +35,7 @@ int main(int argc, char *argv[]) {
 	assert(g_system);
 
 	// Pre initialize the backend
-	((OSystem_POSIX *)g_system)->init();
+	g_system->init();
 
 #ifdef DYNAMIC_MODULES
 	PluginManager::instance().addPluginProvider(new SDLPluginProvider());

backends/platform/sdl/ps3/ps3-main.cpp

@@ -40,7 +40,7 @@ int main(int argc, char *argv[]) {
 	assert(g_system);
 
 	// Pre initialize the backend
-	((OSystem_PS3 *)g_system)->init();
+	g_system->init();
 
 #ifdef DYNAMIC_MODULES
 	PluginManager::instance().addPluginProvider(new SDLPluginProvider());

backends/platform/sdl/psp2/psp2-main.cpp

@@ -46,7 +46,7 @@ int main(int argc, char *argv[]) {
 	assert(g_system);
 
 	// Pre initialize the backend
-	((OSystem_PSP2 *)g_system)->init();
+	g_system->init();
 
 #ifdef DYNAMIC_MODULES
 	PluginManager::instance().addPluginProvider(new SDLPluginProvider());

backends/platform/sdl/riscos/riscos-main.cpp

@@ -35,7 +35,7 @@ int main(int argc, char *argv[]) {
 	assert(g_system);
 
 	// Pre initialize the backend
-	((OSystem_RISCOS *)g_system)->init();
+	g_system->init();
 
 #ifdef DYNAMIC_MODULES
 	PluginManager::instance().addPluginProvider(new SDLPluginProvider());

backends/platform/sdl/sdl.h

@@ -46,7 +46,7 @@ public:
 	 * instantiating the backend. Early needed managers are
 	 * created here.
 	 */
-	virtual void init();
+	virtual void init() override;
 
 	/**
 	 * Get the Mixer Manager instance. Not to confuse with getMixer(),

backends/platform/sdl/switch/switch-main.cpp

@@ -39,7 +39,7 @@ int main(int argc, char *argv[]) {
 	assert(g_system);
 
 	// Pre initialize the backend
-	((OSystem_Switch *)g_system)->init();
+	g_system->init();
 
 #ifdef DYNAMIC_MODULES
 	PluginManager::instance().addPluginProvider(new SDLPluginProvider());

backends/platform/sdl/win32/win32-main.cpp

@@ -61,7 +61,7 @@ int main(int argc, char *argv[]) {
 	assert(g_system);
 
 	// Pre initialize the backend
-	((OSystem_Win32 *)g_system)->init();
+	g_system->init();
 
 #ifdef DYNAMIC_MODULES
 	PluginManager::instance().addPluginProvider(new SDLPluginProvider());

backends/platform/symbian/src/SymbianMain.cpp

@@ -79,7 +79,7 @@ int main(int argc, char *argv[]) {
 	assert(g_system);
 
 	// Pre initialize the backend
-	((OSystem_SDL_Symbian *)g_system)->init();
+	g_system->init();
 
 #ifdef DYNAMIC_MODULES
 	PluginManager::instance().addPluginProvider(new SDLPluginProvider());

common/system.h

@@ -243,6 +243,11 @@ public:
 	 */
 	void destroy();
 
+	/**
+	 * The following method should be called once, after g_system is created.
+	 */
+	virtual void init() {}
+
 	/**
 	 * The following method is called once, from main.cpp, after all
 	 * config data (including command line params etc.) are fully loaded.