#include <agar/config/have_opengl.h>

#include <agar/core.h>
#include <agar/gui.h>
#include <agar/gui/opengl.h>

static void
MyEventLoop(void)
{
	SDL_Event ev;
	AG_Window *win;
	Uint32 Tr1 = SDL_GetTicks(), Tr2 = 0;

	for (;;) {
		Tr2 = SDL_GetTicks();
		if (Tr2-Tr1 >= agView->rNom) {		/* Time to redraw? */
			AG_LockVFS(agView);

			/* Render GUI elements */
			AG_BeginRendering();
			AG_TAILQ_FOREACH(win, &agView->windows, windows) {
				AG_ObjectLock(win);
				AG_WindowDraw(win);
				AG_ObjectUnlock(win);
			}
			AG_EndRendering();
			AG_UnlockVFS(agView);

			/* Recalibrate the effective refresh rate. */
			Tr1 = SDL_GetTicks();
			agView->rCur = agView->rNom - (Tr1-Tr2);
			if (agView->rCur < 1) {
				agView->rCur = 1;
			}
		} else if (SDL_PollEvent(&ev) != 0) {
			/* Send all SDL events to Agar-GUI. */
			AG_ProcessEvent(&ev);
		} else if (AG_TAILQ_FIRST(&agTimeoutObjQ) != NULL) {
			/* Advance the timing wheels. */
			AG_ProcessTimeout(Tr2);
		} else if (agView->rCur > agIdleThresh) {
			/* Idle the rest of the time. */
			SDL_Delay(agView->rCur - agIdleThresh);
		}
	}
}

int
main(int argc, char *argv[])
{
	AG_Window *win;
	AG_Table *tbl;

	if (AG_InitCore("event1", 0) == -1 ||
	    AG_InitVideo(320, 240, 32, AG_VIDEO_RESIZABLE) == -1) {
		return (1);
	}
	win = AG_WindowNew(0);
	AG_LabelNewStatic(win, 0, "Hello, world!");
	AG_WindowShow(win);
	MyEventLoop();
	return (0);
}