static void Frame()
{
g_Profiler2.RecordFrameStart();
PROFILE2("frame");
g_Profiler2.IncrementFrameNumber();
PROFILE2_ATTR("%d", g_Profiler2.GetFrameNumber());
ogl_WarnIfError();
// get elapsed time
const double time = timer_Time();
g_frequencyFilter->Update(time);
// .. old method - "exact" but contains jumps
#if 0
static double last_time;
const double time = timer_Time();
const float TimeSinceLastFrame = (float)(time-last_time);
last_time = time;
ONCE(return); // first call: set last_time and return
// .. new method - filtered and more smooth, but errors may accumulate
#else
const float realTimeSinceLastFrame = 1.0 / g_frequencyFilter->SmoothedFrequency();
#endif
ENSURE(realTimeSinceLastFrame > 0.0f);
// decide if update/render is necessary
bool need_render = !g_app_minimized;
bool need_update = true;
// If we are not running a multiplayer game, disable updates when the game is
// minimized or out of focus and relinquish the CPU a bit, in order to make
// debugging easier.
if(g_PauseOnFocusLoss && !g_NetClient && !g_app_has_focus)
{
PROFILE3("non-focus delay");
need_update = false;
// don't use SDL_WaitEvent: don't want the main loop to freeze until app focus is restored
SDL_Delay(10);
}
// TODO: throttling: limit update and render frequency to the minimum.
// this is mostly relevant for "inactive" state, so that other windows
// get enough CPU time, but it's always nice for power+thermal management.
// this scans for changed files/directories and reloads them, thus
// allowing hotloading (changes are immediately assimilated in-game).
ReloadChangedFiles();
ProgressiveLoad();
RendererIncrementalLoad();
PumpEvents();
// if the user quit by closing the window, the GL context will be broken and
// may crash when we call Render() on some drivers, so leave this loop
// before rendering
if (quit)
return;
// respond to pumped resize events
if (g_ResizedW || g_ResizedH)
{
g_VideoMode.ResizeWindow(g_ResizedW, g_ResizedH);
g_ResizedW = g_ResizedH = 0;
}
if (g_NetClient)
g_NetClient->Poll();
ogl_WarnIfError();
g_GUI->TickObjects();
ogl_WarnIfError();
if (g_Game && g_Game->IsGameStarted() && need_update)
{
g_Game->Update(realTimeSinceLastFrame);
g_Game->GetView()->Update(float(realTimeSinceLastFrame));
}
// Immediately flush any messages produced by simulation code
if (g_NetClient)
g_NetClient->Flush();
g_UserReporter.Update();
g_Console->Update(realTimeSinceLastFrame);
ogl_WarnIfError();
if(need_render)
{
Render();
PROFILE3("swap buffers");
#if SDL_VERSION_ATLEAST(2, 0, 0)
SDL_GL_SwapWindow(g_VideoMode.GetWindow());
#else
SDL_GL_SwapBuffers();
#endif
}
ogl_WarnIfError();
g_Profiler.Frame();
g_GameRestarted = false;
}
static void Frame()
{
g_Profiler2.RecordFrameStart();
PROFILE2("frame");
g_Profiler2.IncrementFrameNumber();
PROFILE2_ATTR("%d", g_Profiler2.GetFrameNumber());
ogl_WarnIfError();
// get elapsed time
const double time = timer_Time();
g_frequencyFilter->Update(time);
// .. old method - "exact" but contains jumps
#if 0
static double last_time;
const double time = timer_Time();
const float TimeSinceLastFrame = (float)(time-last_time);
last_time = time;
ONCE(return); // first call: set last_time and return
// .. new method - filtered and more smooth, but errors may accumulate
#else
const float TimeSinceLastFrame = 1.0 / g_frequencyFilter->SmoothedFrequency();
#endif
ENSURE(TimeSinceLastFrame > 0.0f);
// decide if update/render is necessary
bool need_render = !g_app_minimized;
bool need_update = true;
// If we are not running a multiplayer game, disable updates when the game is
// minimized or out of focus and relinquish the CPU a bit, in order to make
// debugging easier.
if( g_PauseOnFocusLoss && !g_NetClient && !g_app_has_focus )
{
PROFILE3("non-focus delay");
need_update = false;
// don't use SDL_WaitEvent: don't want the main loop to freeze until app focus is restored
SDL_Delay(10);
}
// TODO: throttling: limit update and render frequency to the minimum.
// this is mostly relevant for "inactive" state, so that other windows
// get enough CPU time, but it's always nice for power+thermal management.
bool is_building_archive = ProgressiveBuildArchive();
// this scans for changed files/directories and reloads them, thus
// allowing hotloading (changes are immediately assimilated in-game).
// must not be done during archive building because it changes the
// archive file each iteration, but keeps it locked; reloading
// would trigger a warning because the file can't be opened.
if(!is_building_archive)
ReloadChangedFiles();
ProgressiveLoad();
RendererIncrementalLoad();
PumpEvents();
// if the user quit by closing the window, the GL context will be broken and
// may crash when we call Render() on some drivers, so leave this loop
// before rendering
if (quit)
return;
// respond to pumped resize events
if (g_ResizedW || g_ResizedH)
{
g_VideoMode.ResizeWindow(g_ResizedW, g_ResizedH);
g_ResizedW = g_ResizedH = 0;
}
if (g_NetClient)
g_NetClient->Poll();
ogl_WarnIfError();
g_GUI->TickObjects();
ogl_WarnIfError();
if (g_Game && g_Game->IsGameStarted() && need_update)
{
g_Game->Update(TimeSinceLastFrame);
g_Game->GetView()->Update(float(TimeSinceLastFrame));
CCamera* camera = g_Game->GetView()->GetCamera();
CMatrix3D& orientation = camera->m_Orientation;
float* pos = &orientation._data[12];
float* dir = &orientation._data[8];
float* up = &orientation._data[4];
// HACK: otherwise sound effects are L/R flipped. No idea what else
// is going wrong, because the listener and camera are supposed to
// coincide in position and orientation.
float down[3] = { -up[0], -up[1], -up[2] };
{
PROFILE3("sound update");
if (snd_update(pos, dir, down) < 0)
debug_printf(L"snd_update failed\n");
}
}
else
{
PROFILE3("sound update (0)");
if (snd_update(0, 0, 0) < 0)
debug_printf(L"snd_update (pos=0 version) failed\n");
}
// Immediately flush any messages produced by simulation code
if (g_NetClient)
g_NetClient->Flush();
g_UserReporter.Update();
g_Console->Update(TimeSinceLastFrame);
ogl_WarnIfError();
if(need_render)
{
Render();
PROFILE3("swap buffers");
#if SDL_VERSION_ATLEAST(2, 0, 0)
SDL_GL_SwapWindow(g_VideoMode.GetWindow());
#else
SDL_GL_SwapBuffers();
#endif
}
ogl_WarnIfError();
g_Profiler.Frame();
g_GameRestarted = false;
}
