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processing events in the engine thread

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git-svn-id: svn://anubis/anaglym/trunk@80 99a6e188-d820-4881-8870-2d33a10e2619
This commit is contained in:
Josh Holtrop 2009-10-14 01:27:54 +00:00
parent 917a226e0f
commit 59818a253d
1 changed files with 29 additions and 3 deletions
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32
anaglym.cc
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@ -22,7 +22,7 @@ static void update();
static void addEvent(const Event & event); static void addEvent(const Event & event);
static Uint32 updateCallback(Uint32 interval, void * param); static Uint32 updateCallback(Uint32 interval, void * param);
static bool lastDrawCompleted; static bool lastUpdateCompleted;
static bool engine_running; static bool engine_running;
static SDL_Event userEvent; static SDL_Event userEvent;
static SDL_cond * event_condition; static SDL_cond * event_condition;
@ -46,6 +46,31 @@ static int engine_thread(void * param)
{ {
SDL_mutexP(event_mutex); SDL_mutexP(event_mutex);
SDL_CondWait(event_condition, event_mutex); SDL_CondWait(event_condition, event_mutex);
bool moreEvents = true;
while (moreEvents)
{
Event event;
SDL_mutexP(event_queue_mutex);
if (event_queue.size() < 1)
moreEvents = false;
else
{
event = event_queue.front();
event_queue.pop();
}
SDL_mutexV(event_queue_mutex);
if (moreEvents)
{
/* process the event */
switch (event.type)
{
case EVENT_UPDATE:
g_engine->update();
lastUpdateCompleted = true;
break;
}
}
}
} }
} }
engine_running = false; engine_running = false;
@ -82,7 +107,7 @@ int main(int argc, char * argv[])
usage(); usage();
} }
lastDrawCompleted = true; lastUpdateCompleted = true;
engine_running = true; engine_running = true;
/* setup SDL update event */ /* setup SDL update event */
userEvent.type = SDL_USEREVENT; userEvent.type = SDL_USEREVENT;
@ -114,7 +139,7 @@ int main(int argc, char * argv[])
/* called by SDL when the update timer expires */ /* called by SDL when the update timer expires */
static Uint32 updateCallback(Uint32 interval, void * param) static Uint32 updateCallback(Uint32 interval, void * param)
{ {
if (lastDrawCompleted) if (lastUpdateCompleted)
SDL_PushEvent(&userEvent); SDL_PushEvent(&userEvent);
return interval; return interval;
} }
@ -157,6 +182,7 @@ static void update()
{ {
Event update_event; Event update_event;
update_event.type = EVENT_UPDATE; update_event.type = EVENT_UPDATE;
lastUpdateCompleted = false;
addEvent(update_event); addEvent(update_event);
} }