bool CALL HGE_Impl::System_Start()
{
//Tu.NguyenHoang Gameloop here
if(!procFrameFunc) {
_PostError("System_Start: No frame function defined");
return false;
}
bActive=true;
// MAIN LOOP
bool done = false;
while (!done) {
SDL_Event event;
while (SDL_PollEvent(&event)) {
//ProcessInput : Will implement later
done = ProcessInput(&event);
if (done)
break;
}
//Process FrameRate
dt = SDL_GetTicks() - t0;
if (dt >= nFixedDelta)
{
fDeltaTime = dt / 1000.0f;
if (fDeltaTime > 0.2f){
if (nFixedDelta)
fDeltaTime = nFixedDelta / 1000.0f;
else
fDeltaTime = 0.01f;
}
fTime += fDeltaTime;
t0 = SDL_GetTicks();
if (t0 - t0fps < 1000)
cfps++;
else {
nFPS = cfps;
cfps = 0;
t0fps = t0;
}
//UpdateFrame
if (procFrameFunc()){
break;
}
_ClearQueue();
//Render
if (procRenderFunc)
procRenderFunc();
//_ClearQueue();
}
else{
if (nFixedDelta && dt + 3 < nFixedDelta)
SDL_Delay(1);
}
}
_ClearQueue();
bActive=false;
return true;
}
void CALL HGE_Impl::System_Shutdown()
{
System_Log("\nFinishing..");
_ClearQueue();
_SoundDone();
_GfxDone();
_DonePowerStatus();
SDL_Quit();
System_Log("The End.");
}
void CALL HGE_Impl::System_Shutdown()
{
System_Log("\nFinishing..");
timeEndPeriod(1);
_ClearQueue();
_SoundDone();
_GfxDone();
if(hwnd)
{
//ShowWindow(hwnd, SW_HIDE);
//SetWindowLong(hwnd, GWL_EXSTYLE, GetWindowLong(hwnd, GWL_EXSTYLE) | WS_EX_TOOLWINDOW);
//ShowWindow(hwnd, SW_SHOW);
DestroyWindow(hwnd);
hwnd=0;
}
if(hInstance) UnregisterClass(WINDOW_CLASS_NAME, hInstance);
System_Log("The End.");
}
bool CALL HGE_Impl::System_Start()
{
MSG msg;
if(!hwnd)
{
_PostError("System_Start: System_Initiate wasn't called");
return false;
}
if(!procFrameFunc) {
_PostError("System_Start: No frame function defined");
return false;
}
bActive=true;
// MAIN LOOP
for(;;)
{
// Process window messages if not in "child mode"
// (if in "child mode" the parent application will do this for us)
if(!hwndParent)
{
if (PeekMessage(&msg,NULL,0,0,PM_REMOVE))
{
if (msg.message == WM_QUIT) break;
// TranslateMessage(&msg);
DispatchMessage(&msg);
continue;
}
}
// Check if mouse is over HGE window for Input_IsMouseOver
_UpdateMouse();
// If HGE window is focused or we have the "don't suspend" state - process the main loop
if(bActive || bDontSuspend)
{
// Ensure we have at least 1ms time step
// to not confuse user's code with 0
do { dt=timeGetTime() - t0; } while(dt < 1);
// If we reached the time for the next frame
// or we just run in unlimited FPS mode, then
// do the stuff
if(dt >= nFixedDelta)
{
// fDeltaTime = time step in seconds returned by Timer_GetDelta
fDeltaTime=dt/1000.0f;
// Cap too large time steps usually caused by lost focus to avoid jerks
if(fDeltaTime > 0.2f)
{
fDeltaTime = nFixedDelta ? nFixedDelta/1000.0f : 0.01f;
}
// Update time counter returned Timer_GetTime
fTime += fDeltaTime;
// Store current time for the next frame
// and count FPS
t0=timeGetTime();
if(t0-t0fps <= 1000) cfps++;
else
{
nFPS=cfps; cfps=0; t0fps=t0;
_UpdatePowerStatus();
}
// Do user's stuff
if(procFrameFunc()) break;
if(procRenderFunc) procRenderFunc();
// If if "child mode" - return after processing single frame
if(hwndParent) break;
// Clean up input events that were generated by
// WindowProc and weren't handled by user's code
_ClearQueue();
// If we use VSYNC - we could afford a little
// sleep to lower CPU usage
// if(!bWindowed && nHGEFPS==HGEFPS_VSYNC) Sleep(1);
}
// If we have a fixed frame rate and the time
// for the next frame isn't too close, sleep a bit
else
{
if(nFixedDelta && dt+3 < nFixedDelta) Sleep(1);
}
}
// If main loop is suspended - just sleep a bit
// (though not too much to allow instant window
// redraw if requested by OS)
else Sleep(1);
}
_ClearQueue();
bActive=false;
return true;
}
bool CALL HGE_Impl::System_Start()
{
MSG msg;
POINT pt;
RECT rc;
if(!hwnd)
{
_PostError("System_Start: System_Initiate wasn't called");
return false;
}
if(!procFrameFunc) {
_PostError("System_Start: No frame function defined");
return false;
}
bActive=true;
for(;;)
{
if(!hwndParent)
{
if (PeekMessage(&msg,NULL,0,0,PM_REMOVE))
{
if (msg.message == WM_QUIT) break;
// TranslateMessage(&msg);
DispatchMessage(&msg);
continue;
}
}
GetCursorPos(&pt);
GetClientRect(hwnd, &rc);
MapWindowPoints(hwnd, NULL, (LPPOINT)&rc, 2);
if(bCaptured || (PtInRect(&rc, pt) && WindowFromPoint(pt)==hwnd)) bMouseOver=true;
else bMouseOver=false;
if(bActive || bDontSuspend) {
do { dt=timeGetTime() - t0; } while(dt < 1);
if(dt >= nFixedDelta)
{
fDeltaTime=dt/1000.0f;
if(fDeltaTime > 0.2f)
{
if(nFixedDelta) fDeltaTime=nFixedDelta/1000.0f;
else fDeltaTime=0.01f;
}
fTime+=fDeltaTime;
t0=timeGetTime();
if(t0-t0fps < 1000) cfps++;
else {nFPS=cfps; cfps=0; t0fps=t0;}
if(procFrameFunc()) break;
if(procRenderFunc) procRenderFunc();
if(hwndParent) break;
_ClearQueue();
if(!bWindowed && nHGEFPS==HGEFPS_VSYNC) Sleep(1);
}
else { if(nFixedDelta && dt+3 < nFixedDelta) Sleep(1); }
}
else Sleep(1);
}
_ClearQueue();
bActive=false;
return true;
}
