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/* Public domain */
/*
* This test ensures Agar can be destroyed and re-initialized.
*/
#include <agar/core/core.h>
#include <agar/gui/gui.h>
#include <agar/gui/label.h>
#include <agar/gui/button.h>
#include <agar/gui/window.h>
int pressedKey = 0; /* Last pressed key */
int xClick = 0, yClick = 0; /* Last clicked x,y */
int curFPS = 0; /* Measured frame rate */
const int nominalFPS = 1000 / 30; /* Nominal frame rate */
/*
* Our custom event loop routine.
*/
static void
MyEventLoop(void)
{
AG_Driver *drv;
AG_Window *win;
Uint32 t1, t2;
AG_DriverEvent dev;
t1 = AG_GetTicks();
for (;;) {
t2 = AG_GetTicks();
if (t2 - t1 >= nominalFPS) {
/*
* Case 1: Update the video display.
*/
AG_LockVFS(&agDrivers);
/* Render the Agar windows */
if (agDriverSw) {
/*
* We are using a single-window driver
* (e.g., sdlfb). If one of the windows is
* marked dirty, all windows must be redrawn.
*/
AG_FOREACH_WINDOW(win, agDriverSw) {
if (win->dirty)
break;
}
if (win != NULL) {
AG_BeginRendering(agDriverSw);
AG_FOREACH_WINDOW(win, agDriverSw) {
if (!win->visible) {
continue;
}
AG_ObjectLock(win);
AG_WindowDraw(win);
AG_ObjectUnlock(win);
}
AG_EndRendering(agDriverSw);
}
}
else {
/*
* We are using a multiple-window driver
* (e.g., glx). Windows marked dirty are
* redrawn.
*/
AGOBJECT_FOREACH_CHILD(drv, &agDrivers,
ag_driver) {
if (!AGDRIVER_MULTIPLE(drv)) {
continue;
}
win = AGDRIVER_MW(drv)->win;
if (!win->visible || !win->dirty) {
continue;
}
AG_BeginRendering(drv);
AG_ObjectLock(win);
AG_WindowDraw(win);
AG_ObjectUnlock(win);
AG_EndRendering(drv);
}
}
AG_UnlockVFS(&agDrivers);
t1 = AG_GetTicks();
curFPS = nominalFPS - (t1 - t2);
if (curFPS < 1) { curFPS = 1; }
}
else if (AG_PendingEvents(NULL) > 0) {
/*
* Case 2: There are events waiting to be processed.
*/
do {
/* Retrieve the next queued event. */
if (AG_GetNextEvent(NULL, &dev) == 1) {
switch (dev.type) {
case AG_DRIVER_MOUSE_BUTTON_DOWN:
xClick = dev.data.button.x;
yClick = dev.data.button.y;
printf("Click at %d,%d!\n",
dev.data.button.x,
dev.data.button.y);
break;
case AG_DRIVER_KEY_DOWN:
pressedKey = (int)dev.data.key.ks;
printf("Key down: %d (0x%x)\n",
(int)dev.data.key.ks,
(Uint)dev.data.key.ucs);
break;
default:
break;
}
/* Forward the event to Agar. */
if (AG_ProcessEvent(NULL, &dev) == -1)
return;
}
} while (AG_PendingEvents(NULL) > 0);
}
else if (AG_TIMEOUTS_QUEUED()) {
/*
* Case 3: There are AG_Timeout(3) callbacks to run.
*/
AG_ProcessTimeouts(t2);
}
else {
/*
* Case 4: Nothing to do, idle.
*/
AG_Delay(1);
}
}
}
int
main(int argc, char *argv[])
{
AG_Window *win;
char *driverSpec = NULL, *optArg;
int c;
while ((c = AG_Getopt(argc, argv, "?hd:", &optArg, NULL)) != -1) {
switch (c) {
case 'd':
driverSpec = optArg;
break;
case '?':
case 'h':
default:
printf("Usage: agarevloop [-d agar-driver-spec]\n");
return (1);
}
}
if (AG_InitCore(NULL, 0) == -1 ||
AG_InitGraphics(driverSpec) == -1) {
fprintf(stderr, "%s\n", AG_GetError());
return (1);
}
#ifdef __APPLE__
AG_BindGlobalKey(AG_KEY_Q, AG_KEYMOD_META, AG_QuitGUI);
#else
AG_BindGlobalKey(AG_KEY_ESCAPE, AG_KEYMOD_ANY, AG_QuitGUI);
#endif
win = AG_WindowNew(0);
AG_WindowSetCaption(win, "Agar custom event loop demo");
AG_LabelNewPolled(win, AG_LABEL_EXPAND,
"Testing custom event loop\n"
"Frame rate = %d\n"
"Pressed key = %d\n"
"Clicked at %d,%d\n",
&curFPS, &pressedKey, &xClick, &yClick);
AG_ButtonNewFn(win, AG_BUTTON_HFILL, "Quit", AGWINDETACH(win));
AG_WindowSetGeometry(win, -1, -1, 300, 128);
AG_WindowShow(win);
MyEventLoop();
AG_Destroy();
return (0);
}
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