static void BoostAppPri()
{
if(!ChangeAppPri())
return;
#ifdef _WINDOWS
/* We just want a slight boost, so we don't skip needlessly if something happens
* in the background. We don't really want to be high-priority--above normal should
* be enough. However, ABOVE_NORMAL_PRIORITY_CLASS is only supported in Win2000
* and later. */
OSVERSIONINFO version;
version.dwOSVersionInfoSize=sizeof(version);
if(!GetVersionEx(&version))
{
LOG->Warn(werr_ssprintf(GetLastError(), "GetVersionEx failed"));
return;
}
#ifndef ABOVE_NORMAL_PRIORITY_CLASS
#define ABOVE_NORMAL_PRIORITY_CLASS 0x00008000
#endif
DWORD pri = HIGH_PRIORITY_CLASS;
if(version.dwMajorVersion >= 5)
pri = ABOVE_NORMAL_PRIORITY_CLASS;
/* Be sure to boost the app, not the thread, to make sure the
* sound thread stays higher priority than the main thread. */
SetPriorityClass(GetCurrentProcess(), pri);
#endif
}
static void RestoreAppPri()
{
if(!ChangeAppPri())
return;
#ifdef _WINDOWS
SetPriorityClass(GetCurrentProcess(), NORMAL_PRIORITY_CLASS);
#endif
}
static void CheckFocus()
{
if( !HOOKS->AppFocusChanged() )
return;
/* If we lose focus, we may lose input events, especially key releases. */
INPUTFILTER->Reset();
if( ChangeAppPri() )
{
if( HOOKS->AppHasFocus() )
HOOKS->BoostPriority();
else
HOOKS->UnBoostPriority();
}
}
void GameLoop::RunGameLoop()
{
/* People may want to do something else while songs are loading, so do
* this after loading songs. */
if( ChangeAppPri() )
HOOKS->BoostPriority();
while( !ArchHooks::UserQuit() )
{
if( !g_sNewTheme.empty() )
DoChangeTheme();
/*
* Update
*/
float fDeltaTime = g_GameplayTimer.GetDeltaTime();
if( g_fConstantUpdateDeltaSeconds > 0 )
fDeltaTime = g_fConstantUpdateDeltaSeconds;
CheckGameLoopTimerSkips( fDeltaTime );
fDeltaTime *= g_fUpdateRate;
/* XXX
PitchDetectionTest::Update();
*/
CheckFocus();
/* Update SOUNDMAN early (before any RageSound::GetPosition calls), to flush position data. */
SOUNDMAN->Update();
/* Update song beat information -before- calling update on all the classes that
* depend on it. If you don't do this first, the classes are all acting on old
* information and will lag. (but no longer fatally, due to timestamping -glenn) */
SOUND->Update( fDeltaTime );
TEXTUREMAN->Update( fDeltaTime );
GAMESTATE->Update( fDeltaTime );
SCREENMAN->Update( fDeltaTime );
MEMCARDMAN->Update();
NSMAN->Update( fDeltaTime );
/* Important: Process input AFTER updating game logic, or input will be acting on song beat from last frame */
HandleInputEvents( fDeltaTime );
if( INPUTMAN->DevicesChanged() )
{
INPUTFILTER->Reset(); // fix "buttons stuck" if button held while unplugged
INPUTMAN->LoadDrivers();
RString sMessage;
if( INPUTMAPPER->CheckForChangedInputDevicesAndRemap(sMessage) )
SCREENMAN->SystemMessage( sMessage );
}
LIGHTSMAN->Update( fDeltaTime );
/*
* Render
*/
SCREENMAN->Draw();
}
/* If we ended mid-game, finish up. */
GAMESTATE->SaveLocalData();
if( ChangeAppPri() )
HOOKS->UnBoostPriority();
}
