/**
** Wait for interactive input event for one frame.
**
** Handles system events, joystick, keyboard, mouse.
** Handles the network messages.
** Handles the sound queue.
**
** All events available are fetched. Sound and network only if available.
** Returns if the time for one frame is over.
*/
void WaitEventsOneFrame()
{
++FrameCounter;
Uint32 ticks = SDL_GetTicks();
if (ticks > NextFrameTicks) { // We are too slow :(
++SlowFrameCounter;
}
InputMouseTimeout(*GetCallbacks(), ticks);
InputKeyTimeout(*GetCallbacks(), ticks);
CursorAnimate(ticks);
int interrupts = 0;
for (;;) {
// Time of frame over? This makes the CPU happy. :(
ticks = SDL_GetTicks();
if (!interrupts && ticks < NextFrameTicks) {
SDL_Delay(NextFrameTicks - ticks);
ticks = SDL_GetTicks();
}
while (ticks >= NextFrameTicks) {
++interrupts;
FrameFraction += FrameRemainder;
if (FrameFraction > 10) {
FrameFraction -= 10;
++NextFrameTicks;
}
NextFrameTicks += FrameTicks;
}
SDL_Event event[1];
const int i = SDL_PollEvent(event);
if (i) { // Handle SDL event
SdlDoEvent(*GetCallbacks(), *event);
}
// Network
int s = 0;
if (IsNetworkGame()) {
s = NetworkFildes.HasDataToRead(0);
if (s > 0) {
GetCallbacks()->NetworkEvent();
}
}
// No more input and time for frame over: return
if (!i && s <= 0 && interrupts) {
break;
}
}
handleInput(NULL);
if (!SkipGameCycle--) {
SkipGameCycle = SkipFrames;
}
}
/**
** Wait for interactive input event for one frame.
**
** Handles system events, joystick, keyboard, mouse.
** Handles the network messages.
** Handles the sound queue.
**
** All events available are fetched. Sound and network only if available.
** Returns if the time for one frame is over.
*/
void WaitEventsOneFrame()
{
struct timeval tv;
fd_set rfds;
fd_set wfds;
Socket maxfd;
int i;
int s = 0;
SDL_Event event[1];
Uint32 ticks;
int interrupts;
++FrameCounter;
ticks = SDL_GetTicks();
if (ticks > NextFrameTicks) { // We are too slow :(
++SlowFrameCounter;
}
InputMouseTimeout(GetCallbacks(), ticks);
InputKeyTimeout(GetCallbacks(), ticks);
CursorAnimate(ticks);
interrupts = 0;
for (;;) {
//
// Time of frame over? This makes the CPU happy. :(
//
ticks = SDL_GetTicks();
if (!interrupts && ticks < NextFrameTicks) {
SDL_Delay(NextFrameTicks - ticks);
ticks = SDL_GetTicks();
}
while (ticks >= NextFrameTicks) {
++interrupts;
FrameFraction += FrameRemainder;
if (FrameFraction > 10) {
FrameFraction -= 10;
++NextFrameTicks;
}
NextFrameTicks += FrameTicks;
}
//
// Prepare select
//
maxfd = 0;
tv.tv_sec = tv.tv_usec = 0;
FD_ZERO(&rfds);
FD_ZERO(&wfds);
//
// Network
//
if (IsNetworkGame()) {
if (NetworkFildes > maxfd) {
maxfd = NetworkFildes;
}
FD_SET(NetworkFildes, &rfds);
}
#if 0
s = select(maxfd + 1, &rfds, &wfds, NULL,
(i = SDL_PollEvent(event)) ? &tv : NULL);
#else
// QUICK HACK to fix the event/timer problem
// The timer code didn't interrupt the select call.
// Perhaps I could send a signal to the process
// Not very nice, but this is the problem if you use other libraries
// The event handling of SDL is wrong designed = polling only.
// There is hope on SDL 1.3 which will have this fixed.
//s = select(maxfd + 1, &rfds, &wfds, NULL, &tv);
//printf("PollEvent\n");
i = SDL_PollEvent(event);
#endif
if (i) { // Handle SDL event
SdlDoEvent(GetCallbacks(), event);
}
if (s > 0) {
//
// Network
//
if (IsNetworkGame() && FD_ISSET(NetworkFildes, &rfds) ) {
GetCallbacks()->NetworkEvent();
}
}
//
// No more input and time for frame over: return
//
if (!i && s <= 0 && interrupts) {
break;
}
}
handleInput(NULL);
if (!SkipGameCycle--) {
SkipGameCycle = SkipFrames;
}
if (!UseOpenGL && (GameRunning || Editor.Running || PatchEditorRunning)) {
Video.ClearScreen();
}
}