/*
* timer - event timer
*/
void
timer(void)
{
register struct peer *peer, *next_peer;
u_int n;
long delta;
/*
* The basic timerevent is one second. This is used to adjust
* the system clock in time and frequency, implement the
* kiss-o'-deatch function and implement the association
* polling function..
*/
current_time += nap_time;
get_systime(&sys_time);
nap_time = (u_long)-1;
if (do_adjtime) {
if (adjust_timer <= current_time) {
adjust_timer += 1;
adj_host_clock();
#ifdef REFCLOCK
for (n = 0; n < NTP_HASH_SIZE; n++) {
for (peer = peer_hash[n]; peer != 0; peer = next_peer) {
next_peer = peer->next;
if (peer->flags & FLAG_REFCLOCK)
refclock_timer(peer);
}
}
#endif /* REFCLOCK */
}
nap_time = 1;
}
if (awake_timer) {
if (awake_timer <= current_time) {
for (n = 0; n < NTP_HASH_SIZE; n++) {
for (peer = peer_hash[n]; peer != 0; peer = peer->next) {
peer->burst = NSTAGE;
peer->nextdate = current_time;
peer->throttle = 0;
}
}
allow_panic = TRUE; /* Allow for large time offsets */
init_loopfilter();
state = EVNT_NSET;
awake_timer = 0;
} else {
delta = awake_timer - current_time;
if (delta < nap_time) {
nap_time = delta;
}
}
}
/*
* Now dispatch any peers whose event timer has expired. Be
* careful here, since the peer structure might go away as the
* result of the call.
*/
for (n = 0; n < NTP_HASH_SIZE; n++) {
for (peer = peer_hash[n]; peer != 0; peer = next_peer) {
next_peer = peer->next;
if (peer->action && peer->nextaction <= current_time)
peer->action(peer);
/*
* Restrain the non-burst packet rate not more
* than one packet every 16 seconds. This is
* usually tripped using iburst and minpoll of
* 128 s or less.
*/
if (peer->throttle > 0)
peer->throttle--;
if (peer->nextdate <= current_time) {
#ifdef REFCLOCK
if (peer->flags & FLAG_REFCLOCK)
refclock_transmit(peer);
else
transmit(peer);
#else /* REFCLOCK */
transmit(peer);
#endif /* REFCLOCK */
}
if (peer->action && peer->nextaction >= current_time) {
delta = peer->nextaction - current_time;
if (delta < nap_time) {
nap_time = delta;
}
} else if (peer->nextdate >= current_time) {
delta = peer->nextdate - current_time;
if (delta < nap_time) {
nap_time = delta;
}
}
}
}
/*
* Orphan mode is active when enabled and when no servers less
* than the orphan statum are available. A server with no other
* synchronization source is an orphan It shows offset zero and
* reference ID the loopback address.
*/
if (sys_orphan < STRATUM_UNSPEC && sys_peer == NULL) {
if (sys_leap == LEAP_NOTINSYNC) {
sys_leap = LEAP_NOWARNING;
#ifdef OPENSSL
if (crypto_flags)
crypto_update();
#endif /* OPENSSL */
}
sys_stratum = (u_char)sys_orphan;
if (sys_stratum > 1)
sys_refid = htonl(LOOPBACKADR);
else
memcpy(&sys_refid, "LOOP", 4);
sys_offset = 0;
sys_rootdelay = 0;
sys_rootdisp = 0;
}
/*
* Leapseconds. If a leap is pending, decrement the time
* remaining. If less than one day remains, set the leap bits.
* When no time remains, clear the leap bits and increment the
* TAI. If kernel suppport is not available, do the leap
* crudely. Note a leap cannot be pending unless the clock is
* set.
*/
if (leapsec > 0) {
leapsec--;
if (leapsec == 0) {
sys_leap = LEAP_NOWARNING;
sys_tai = leap_tai;
#ifdef KERNEL_PLL
if (!(pll_control && kern_enable))
step_systime(-1.0);
#else /* KERNEL_PLL */
#ifndef SYS_WINNT /* WinNT port has its own leap second handling */
step_systime(-1.0);
#endif /* SYS_WINNT */
#endif /* KERNEL_PLL */
report_event(EVNT_LEAP, NULL, NULL);
} else {
if (leapsec < DAY)
sys_leap = LEAP_ADDSECOND;
if (leap_tai > 0)
sys_tai = leap_tai - 1;
}
}
/*
* Update huff-n'-puff filter.
*/
if (huffpuff_timer <= current_time) {
huffpuff_timer += HUFFPUFF;
huffpuff();
}
if (huffpuff_timer >= current_time) {
delta = huffpuff_timer - current_time;
if (delta < nap_time) {
nap_time = delta;
}
}
#ifdef OPENSSL
/*
* Garbage collect expired keys.
*/
if (keys_timer <= current_time) {
keys_timer += 1 << sys_automax;
auth_agekeys();
}
if (keys_timer >= current_time) {
delta = keys_timer - current_time;
if (delta < nap_time) {
nap_time = delta;
}
}
/*
* Garbage collect key list and generate new private value. The
* timer runs only after initial synchronization and fires about
* once per day.
*/
if (revoke_timer <= current_time && sys_leap !=
LEAP_NOTINSYNC) {
revoke_timer += 1 << sys_revoke;
RAND_bytes((u_char *)&sys_private, 4);
}
if (revoke_timer >= current_time) {
delta = revoke_timer - current_time;
if (delta < nap_time) {
nap_time = delta;
}
}
#endif /* OPENSSL */
/*
* Interface update timer
*/
if (interface_interval && interface_timer <= current_time) {
timer_interfacetimeout(current_time +
interface_interval);
DPRINTF(2, ("timer: interface update\n"));
interface_update(NULL, NULL);
}
if (interface_interval && interface_timer >= current_time) {
delta = interface_timer - current_time;
if (delta < nap_time) {
nap_time = delta;
}
}
if (dns_timer && (dns_timer <= current_time)) {
dns_timer = update_dns_peers();
}
if (dns_timer >= current_time) {
delta = dns_timer - current_time;
if (delta < nap_time) {
nap_time = delta;
}
}
/*
* Finally, write hourly stats.
*/
if (stats_timer <= current_time) {
stats_timer += HOUR;
write_stats();
if (sys_tai != 0 && sys_time.l_ui > leap_expire)
report_event(EVNT_LEAPVAL, NULL, NULL);
} else if (!do_adjtime && drift_file_sw) {
write_stats(); /* update more frequently for pacemaker */
}
if (stats_timer >= current_time) {
delta = stats_timer - current_time;
if (delta < nap_time) {
nap_time = delta;
}
}
if (nap_time == 0) {
nap_time = 1;
}
if (debug) {
msyslog(LOG_INFO, "%s: current_time: %ld, nap_time: %ld", __FUNCTION__,
current_time, nap_time);
}
itimer.it_interval.tv_sec = itimer.it_value.tv_sec = nap_time;
setitimer(ITIMER_REAL, &itimer, (struct itimerval *)0);
}
/*
* timer - event timer
*/
void
timer(void)
{
struct peer * p;
struct peer * next_peer;
l_fp now;
time_t tnow;
/*
* The basic timerevent is one second. This is used to adjust the
* system clock in time and frequency, implement the kiss-o'-death
* function and the association polling function.
*/
current_time++;
if (adjust_timer <= current_time) {
adjust_timer += 1;
adj_host_clock();
#ifdef REFCLOCK
for (p = peer_list; p != NULL; p = next_peer) {
next_peer = p->p_link;
if (FLAG_REFCLOCK & p->flags)
refclock_timer(p);
}
#endif /* REFCLOCK */
}
/*
* Now dispatch any peers whose event timer has expired. Be
* careful here, since the peer structure might go away as the
* result of the call.
*/
for (p = peer_list; p != NULL; p = next_peer) {
next_peer = p->p_link;
/*
* Restrain the non-burst packet rate not more
* than one packet every 16 seconds. This is
* usually tripped using iburst and minpoll of
* 128 s or less.
*/
if (p->throttle > 0)
p->throttle--;
if (p->nextdate <= current_time) {
#ifdef REFCLOCK
if (FLAG_REFCLOCK & p->flags)
refclock_transmit(p);
else
#endif /* REFCLOCK */
transmit(p);
}
}
/*
* Orphan mode is active when enabled and when no servers less
* than the orphan stratum are available. A server with no other
* synchronization source is an orphan. It shows offset zero and
* reference ID the loopback address.
*/
if (sys_orphan < STRATUM_UNSPEC && sys_peer == NULL &&
current_time > orphwait) {
if (sys_leap == LEAP_NOTINSYNC) {
set_sys_leap(LEAP_NOWARNING);
#ifdef AUTOKEY
if (crypto_flags)
crypto_update();
#endif /* AUTOKEY */
}
sys_stratum = (u_char)sys_orphan;
if (sys_stratum > 1)
sys_refid = htonl(LOOPBACKADR);
else
memcpy(&sys_refid, "LOOP", 4);
sys_offset = 0;
sys_rootdelay = 0;
sys_rootdisp = 0;
}
get_systime(&now);
time(&tnow);
/*
* Leapseconds. Get time and defer to worker if either something
* is imminent or every 8th second.
*/
if (leapsec > LSPROX_NOWARN || 0 == (current_time & 7))
check_leapsec(now.l_ui, &tnow,
(sys_leap == LEAP_NOTINSYNC));
if (sys_leap != LEAP_NOTINSYNC) {
if (leapsec >= LSPROX_ANNOUNCE && leapdif) {
if (leapdif > 0)
set_sys_leap(LEAP_ADDSECOND);
else
set_sys_leap(LEAP_DELSECOND);
} else {
set_sys_leap(LEAP_NOWARNING);
}
}
/*
* Update huff-n'-puff filter.
*/
if (huffpuff_timer <= current_time) {
huffpuff_timer += HUFFPUFF;
huffpuff();
}
#ifdef AUTOKEY
/*
* Garbage collect expired keys.
*/
if (keys_timer <= current_time) {
keys_timer += 1 << sys_automax;
auth_agekeys();
}
/*
* Generate new private value. This causes all associations
* to regenerate cookies.
*/
if (revoke_timer && revoke_timer <= current_time) {
revoke_timer += 1 << sys_revoke;
RAND_bytes((u_char *)&sys_private, 4);
}
#endif /* AUTOKEY */
/*
* Interface update timer
*/
if (interface_interval && interface_timer <= current_time) {
timer_interfacetimeout(current_time +
interface_interval);
DPRINTF(2, ("timer: interface update\n"));
interface_update(NULL, NULL);
}
if (worker_idle_timer && worker_idle_timer <= current_time)
worker_idle_timer_fired();
/*
* Finally, write hourly stats and do the hourly
* and daily leapfile checks.
*/
if (stats_timer <= current_time) {
stats_timer += SECSPERHR;
write_stats();
if (leapf_timer <= current_time) {
leapf_timer += SECSPERDAY;
check_leap_file(TRUE, now.l_ui, &tnow);
} else {
check_leap_file(FALSE, now.l_ui, &tnow);
}
}
}
/*
* timer - dispatch anyone who needs to be
*/
void
timer(void)
{
register struct peer *peer, *next_peer;
#ifdef OPENSSL
char statstr[NTP_MAXSTRLEN]; /* statistics for filegen */
#endif /* OPENSSL */
u_int n;
current_time += (1<<EVENT_TIMEOUT);
/*
* Adjustment timeout first.
*/
if (adjust_timer <= current_time) {
adjust_timer += 1;
adj_host_clock();
kod_proto();
#ifdef REFCLOCK
for (n = 0; n < NTP_HASH_SIZE; n++) {
for (peer = peer_hash[n]; peer != 0; peer = next_peer) {
next_peer = peer->next;
if (peer->flags & FLAG_REFCLOCK)
refclock_timer(peer);
}
}
#endif /* REFCLOCK */
}
/*
* Now dispatch any peers whose event timer has expired. Be careful
* here, since the peer structure might go away as the result of
* the call.
*/
for (n = 0; n < NTP_HASH_SIZE; n++) {
for (peer = peer_hash[n]; peer != 0; peer = next_peer) {
next_peer = peer->next;
if (peer->action && peer->nextaction <= current_time)
peer->action(peer);
if (peer->nextdate <= current_time) {
#ifdef REFCLOCK
if (peer->flags & FLAG_REFCLOCK)
refclock_transmit(peer);
else
transmit(peer);
#else /* REFCLOCK */
transmit(peer);
#endif /* REFCLOCK */
}
}
}
/*
* Garbage collect expired keys.
*/
if (keys_timer <= current_time) {
keys_timer += MINUTE;
auth_agekeys();
}
/*
* Huff-n'-puff filter
*/
if (huffpuff_timer <= current_time) {
huffpuff_timer += HUFFPUFF;
huffpuff();
}
#ifdef OPENSSL
/*
* Garbage collect old keys and generate new private value
*/
if (revoke_timer <= current_time) {
revoke_timer += RANDPOLL(sys_revoke);
expire_all();
sprintf(statstr, "refresh ts %u", ntohl(hostval.tstamp));
record_crypto_stats(NULL, statstr);
#ifdef DEBUG
if (debug)
printf("timer: %s\n", statstr);
#endif
}
#endif /* OPENSSL */
/*
* interface update timer
*/
if (interface_interval && interface_timer <= current_time) {
timer_interfacetimeout(current_time + interface_interval);
DPRINTF(1, ("timer: interface update\n"));
interface_update(NULL, NULL);
}
/*
* Finally, periodically write stats.
*/
if (stats_timer <= current_time) {
if (stats_timer != 0)
write_stats();
stats_timer += stats_write_period;
}
}
/* game_loop() has been turned into a SDL based loop.
The code for one iteration of the original game_loop is
in game_loop_iter. */
static void
game_loop()
{
/* FPS */
int fps = 0;
int fps_ema = 0;
int fps_target = 25;
const float ema_alpha = 0.003;
int drag_button = 0;
unsigned int last_down[3] = {0};
unsigned int last_click[3] = {0};
unsigned int current_ticks = SDL_GetTicks();
unsigned int accum = 0;
unsigned int accum_frames = 0;
SDL_Event event;
gui_event_t ev;
game_loop_run = 1;
while (game_loop_run) {
if (SDL_PollEvent(&event)) {
switch (event.type) {
case SDL_MOUSEBUTTONUP:
if (drag_button == event.button.button) {
ev.type = GUI_EVENT_TYPE_DRAG_END;
ev.x = event.button.x;
ev.y = event.button.y;
ev.button = drag_button;
gui_object_handle_event((gui_object_t *)&interface, &ev);
drag_button = 0;
}
ev.type = GUI_EVENT_TYPE_BUTTON_UP;
ev.x = event.button.x;
ev.y = event.button.y;
ev.button = event.button.button;
gui_object_handle_event((gui_object_t *)&interface, &ev);
if (event.button.button <= 3 &&
current_ticks - last_down[event.button.button-1] < MOUSE_SENSITIVITY) {
ev.type = GUI_EVENT_TYPE_CLICK;
ev.x = event.button.x;
ev.y = event.button.y;
ev.button = event.button.button;
gui_object_handle_event((gui_object_t *)&interface, &ev);
if (current_ticks - last_click[event.button.button-1] < MOUSE_SENSITIVITY) {
ev.type = GUI_EVENT_TYPE_DBL_CLICK;
ev.x = event.button.x;
ev.y = event.button.y;
ev.button = event.button.button;
gui_object_handle_event((gui_object_t *)&interface, &ev);
}
last_click[event.button.button-1] = current_ticks;
}
break;
case SDL_MOUSEBUTTONDOWN:
ev.type = GUI_EVENT_TYPE_BUTTON_DOWN;
ev.x = event.button.x;
ev.y = event.button.y;
ev.button = event.button.button;
gui_object_handle_event((gui_object_t *)&interface, &ev);
if (event.button.button <= 3) last_down[event.button.button-1] = current_ticks;
break;
case SDL_MOUSEMOTION:
if (drag_button == 0) {
/* Move pointer normally. */
interface_set_cursor(&interface, event.motion.x, event.motion.y);
}
for (int button = 1; button <= 3; button++) {
if (event.motion.state & SDL_BUTTON(button)) {
if (drag_button == 0) {
drag_button = button;
ev.type = GUI_EVENT_TYPE_DRAG_START;
ev.x = event.motion.x;
ev.y = event.motion.y;
ev.button = drag_button;
gui_object_handle_event((gui_object_t *)&interface, &ev);
}
ev.type = GUI_EVENT_TYPE_DRAG_MOVE;
ev.x = event.motion.x;
ev.y = event.motion.y;
ev.button = drag_button;
gui_object_handle_event((gui_object_t *)&interface, &ev);
break;
}
}
break;
case SDL_KEYDOWN:
if (event.key.keysym.sym == SDLK_q &&
(event.key.keysym.mod & KMOD_CTRL)) {
game_loop_quit();
break;
}
switch (event.key.keysym.sym) {
/* Map scroll */
case SDLK_UP: {
viewport_t *viewport = interface_get_top_viewport(&interface);
viewport_move_by_pixels(viewport, 0, -1);
}
break;
case SDLK_DOWN: {
viewport_t *viewport = interface_get_top_viewport(&interface);
viewport_move_by_pixels(viewport, 0, 1);
}
break;
case SDLK_LEFT: {
viewport_t *viewport = interface_get_top_viewport(&interface);
viewport_move_by_pixels(viewport, -1, 0);
}
break;
case SDLK_RIGHT: {
viewport_t *viewport = interface_get_top_viewport(&interface);
viewport_move_by_pixels(viewport, 1, 0);
}
break;
/* Panel click shortcuts */
case SDLK_1: {
panel_bar_t *panel = interface_get_panel_bar(&interface);
panel_bar_activate_button(panel, 0);
}
break;
case SDLK_2: {
panel_bar_t *panel = interface_get_panel_bar(&interface);
panel_bar_activate_button(panel, 1);
}
break;
case SDLK_3: {
panel_bar_t *panel = interface_get_panel_bar(&interface);
panel_bar_activate_button(panel, 2);
}
break;
case SDLK_4: {
panel_bar_t *panel = interface_get_panel_bar(&interface);
panel_bar_activate_button(panel, 3);
}
break;
case SDLK_5: {
panel_bar_t *panel = interface_get_panel_bar(&interface);
panel_bar_activate_button(panel, 4);
}
break;
/* Game speed */
case SDLK_PLUS:
case SDLK_KP_PLUS:
if (game.game_speed < 40) game.game_speed += 1;
LOGI("main", "Game speed: %u", game.game_speed);
break;
case SDLK_MINUS:
case SDLK_KP_MINUS:
if (game.game_speed >= 1) game.game_speed -= 1;
LOGI("main", "Game speed: %u", game.game_speed);
break;
case SDLK_0:
game.game_speed = DEFAULT_GAME_SPEED;
LOGI("main", "Game speed: %u", game.game_speed);
break;
case SDLK_p:
if (game.game_speed == 0) game_pause(0);
else game_pause(1);
break;
/* Audio */
case SDLK_s:
sfx_enable(!sfx_is_enabled());
break;
case SDLK_m:
midi_enable(!midi_is_enabled());
break;
/* Misc */
case SDLK_ESCAPE:
if (BIT_TEST(interface.click, 7)) { /* Building road */
interface_build_road_end(&interface);
} else if (interface.clkmap != 0) {
interface_close_popup(&interface);
}
break;
/* Debug */
case SDLK_g:
interface.viewport.layers ^= VIEWPORT_LAYER_GRID;
break;
case SDLK_j: {
int current = 0;
for (int i = 0; i < 4; i++) {
if (interface.player == game.player[i]) {
current = i;
break;
}
}
for (int i = (current+1) % 4; i != current; i = (i+1) % 4) {
if (PLAYER_IS_ACTIVE(game.player[i])) {
interface.player = game.player[i];
LOGD("main", "Switched to player %i.", i);
break;
}
}
}
break;
case SDLK_z:
if (event.key.keysym.mod & KMOD_CTRL) {
save_game(0);
}
break;
default:
break;
}
break;
case SDL_QUIT:
game_loop_quit();
break;
}
}
unsigned int new_ticks = SDL_GetTicks();
int delta_ticks = new_ticks - current_ticks;
current_ticks = new_ticks;
accum += delta_ticks;
while (accum >= TICK_LENGTH) {
game_update();
/* Autosave periodically */
if ((game.const_tick % AUTOSAVE_INTERVAL) == 0 &&
game.game_speed > 0) {
int r = save_game(1);
if (r < 0) LOGW("main", "Autosave failed.");
}
/* FPS */
fps = 1000*((float)accum_frames / accum);
if (fps_ema > 0) fps_ema = ema_alpha*fps + (1-ema_alpha)*fps_ema;
else if (fps > 0) fps_ema = fps;
if ((game.const_tick % (10*TICKS_PER_SEC)) == 0) {
LOGV("main", "FPS: %i", fps_ema);
}
accum -= TICK_LENGTH;
accum_frames = 0;
}
/* Update and draw interface */
interface_update(&interface);
interface.flags &= ~BIT(4);
interface.flags &= ~BIT(7);
gui_object_redraw((gui_object_t *)&interface, game.frame);
/* TODO very crude dirty marking algortihm: mark everything. */
sdl_mark_dirty(0, 0, sdl_frame_get_width(game.frame),
sdl_frame_get_height(game.frame));
/* Swap video buffers */
sdl_swap_buffers();
accum_frames += 1;
/* Reduce framerate to target */
if (fps_target > 0) {
int delay = 0;
if (fps_ema > 0) delay = (1000/fps_target) - (1000/fps_ema);
if (delay > 0) SDL_Delay(delay);
}
}
}
/* game_loop() has been turned into a SDL based loop.
The code for one iteration of the original game_loop is
in game_loop_iter. */
static void
game_loop()
{
/* FPS */
int fps = 0;
float fps_ema = 0;
int fps_target = 25;
/* TODO: compute alpha dynamically based on frametime */
const float ema_alpha = 0.07;
const int frametime_target = 1000 / fps_target; /* in milliseconds */
int last_frame = SDL_GetTicks();
int drag_button = 0;
unsigned int last_down[3] = {0};
unsigned int last_click[3] = {0};
unsigned int current_ticks = SDL_GetTicks();
unsigned int accum = 0;
SDL_Event event;
gui_event_t ev;
game_loop_run = 1;
while (game_loop_run) {
while (SDL_PollEvent(&event)) {
switch (event.type) {
case SDL_MOUSEBUTTONUP:
if (drag_button == event.button.button) {
ev.type = GUI_EVENT_TYPE_DRAG_END;
ev.x = event.button.x;
ev.y = event.button.y;
ev.button = drag_button;
gui_object_handle_event((gui_object_t *)&interface, &ev);
drag_button = 0;
}
ev.type = GUI_EVENT_TYPE_BUTTON_UP;
ev.x = event.button.x;
ev.y = event.button.y;
ev.button = event.button.button;
gui_object_handle_event((gui_object_t *)&interface, &ev);
if (event.button.button <= 3 &&
current_ticks - last_down[event.button.button-1] < MOUSE_SENSITIVITY) {
ev.type = GUI_EVENT_TYPE_CLICK;
ev.x = event.button.x;
ev.y = event.button.y;
ev.button = event.button.button;
gui_object_handle_event((gui_object_t *)&interface, &ev);
if (current_ticks - last_click[event.button.button-1] < MOUSE_SENSITIVITY) {
ev.type = GUI_EVENT_TYPE_DBL_CLICK;
ev.x = event.button.x;
ev.y = event.button.y;
ev.button = event.button.button;
gui_object_handle_event((gui_object_t *)&interface, &ev);
}
last_click[event.button.button-1] = current_ticks;
}
break;
case SDL_MOUSEBUTTONDOWN:
ev.type = GUI_EVENT_TYPE_BUTTON_DOWN;
ev.x = event.button.x;
ev.y = event.button.y;
ev.button = event.button.button;
gui_object_handle_event((gui_object_t *)&interface, &ev);
if (event.button.button <= 3) last_down[event.button.button-1] = current_ticks;
break;
case SDL_MOUSEMOTION:
if (drag_button == 0) {
/* Move pointer normally. */
interface_set_cursor(&interface, event.motion.x, event.motion.y);
}
for (int button = 1; button <= 3; button++) {
if (event.motion.state & SDL_BUTTON(button)) {
if (drag_button == 0) {
drag_button = button;
ev.type = GUI_EVENT_TYPE_DRAG_START;
ev.x = event.motion.x;
ev.y = event.motion.y;
ev.button = drag_button;
gui_object_handle_event((gui_object_t *)&interface, &ev);
}
ev.type = GUI_EVENT_TYPE_DRAG_MOVE;
ev.x = event.motion.x;
ev.y = event.motion.y;
ev.button = drag_button;
gui_object_handle_event((gui_object_t *)&interface, &ev);
break;
}
}
break;
case SDL_KEYDOWN:
if (event.key.keysym.sym == SDLK_q &&
(event.key.keysym.mod & KMOD_CTRL)) {
game_loop_quit();
break;
}
switch (event.key.keysym.sym) {
/* Map scroll */
case SDLK_UP: {
viewport_t *viewport = interface_get_top_viewport(&interface);
viewport_move_by_pixels(viewport, 0, -1);
}
break;
case SDLK_DOWN: {
viewport_t *viewport = interface_get_top_viewport(&interface);
viewport_move_by_pixels(viewport, 0, 1);
}
break;
case SDLK_LEFT: {
viewport_t *viewport = interface_get_top_viewport(&interface);
viewport_move_by_pixels(viewport, -1, 0);
}
break;
case SDLK_RIGHT: {
viewport_t *viewport = interface_get_top_viewport(&interface);
viewport_move_by_pixels(viewport, 1, 0);
}
break;
/* Panel click shortcuts */
case SDLK_1: {
panel_bar_t *panel = interface_get_panel_bar(&interface);
panel_bar_activate_button(panel, 0);
}
break;
case SDLK_2: {
panel_bar_t *panel = interface_get_panel_bar(&interface);
panel_bar_activate_button(panel, 1);
}
break;
case SDLK_3: {
panel_bar_t *panel = interface_get_panel_bar(&interface);
panel_bar_activate_button(panel, 2);
}
break;
case SDLK_4: {
panel_bar_t *panel = interface_get_panel_bar(&interface);
panel_bar_activate_button(panel, 3);
}
break;
case SDLK_5: {
panel_bar_t *panel = interface_get_panel_bar(&interface);
panel_bar_activate_button(panel, 4);
}
break;
case SDLK_TAB:
if (event.key.keysym.mod & KMOD_SHIFT) {
interface_return_from_message(&interface);
} else {
interface_open_message(&interface);
}
break;
/* Game speed */
case SDLK_PLUS:
case SDLK_KP_PLUS:
if (game.game_speed < 40) game.game_speed += 1;
LOGI("main", "Game speed: %u", game.game_speed);
break;
case SDLK_MINUS:
case SDLK_KP_MINUS:
if (game.game_speed >= 1) game.game_speed -= 1;
LOGI("main", "Game speed: %u", game.game_speed);
break;
case SDLK_0:
game.game_speed = DEFAULT_GAME_SPEED;
LOGI("main", "Game speed: %u", game.game_speed);
break;
case SDLK_p:
if (game.game_speed == 0) game_pause(0);
else game_pause(1);
break;
/* Audio */
case SDLK_s:
sfx_enable(!sfx_is_enabled());
break;
case SDLK_m:
midi_enable(!midi_is_enabled());
break;
/* Video */
case SDLK_f:
if (event.key.keysym.mod & KMOD_CTRL) {
sdl_set_fullscreen(!sdl_is_fullscreen());
}
break;
/* Misc */
case SDLK_ESCAPE:
if (GUI_OBJECT(&interface.popup)->displayed) {
interface_close_popup(&interface);
} else if (interface.building_road) {
interface_build_road_end(&interface);
}
break;
/* Debug */
case SDLK_g:
interface.viewport.layers ^= VIEWPORT_LAYER_GRID;
break;
case SDLK_b:
interface.viewport.show_possible_build = !interface.viewport.show_possible_build;
break;
case SDLK_j: {
int current = 0;
for (int i = 0; i < 4; i++) {
if (interface.player == game.player[i]) {
current = i;
break;
}
}
for (int i = (current+1) % 4; i != current; i = (i+1) % 4) {
if (PLAYER_IS_ACTIVE(game.player[i])) {
interface.player = game.player[i];
LOGD("main", "Switched to player %i.", i);
break;
}
}
}
break;
case SDLK_z:
if (event.key.keysym.mod & KMOD_CTRL) {
save_game(0);
}
break;
case SDLK_F10:
interface_open_game_init(&interface);
break;
default:
break;
}
break;
case SDL_VIDEORESIZE:
sdl_set_resolution(event.resize.w, event.resize.h, 0);
frame_t *screen = sdl_get_screen_frame();
int width = sdl_frame_get_width(screen);
int height = sdl_frame_get_height(screen);
screen_frame.clip.w = width;
screen_frame.clip.h = height;
gui_object_set_size((gui_object_t *)&interface, width, height);
break;
case SDL_QUIT:
game_loop_quit();
break;
}
}
unsigned int new_ticks = SDL_GetTicks();
int delta_ticks = new_ticks - current_ticks;
current_ticks = new_ticks;
/* Update FPS EMA per frame */
fps = 1000*(1.0 / (float)delta_ticks);
if (fps_ema > 0) fps_ema = ema_alpha*fps + (1-ema_alpha)*fps_ema;
else if (fps > 0) fps_ema = fps;
accum += delta_ticks;
while (accum >= TICK_LENGTH) {
game_update();
/* Autosave periodically */
if ((game.const_tick % AUTOSAVE_INTERVAL) == 0 &&
game.game_speed > 0) {
int r = save_game(1);
if (r < 0) LOGW("main", "Autosave failed.");
}
/* Print FPS */
if ((game.const_tick % (10*TICKS_PER_SEC)) == 0) {
LOGV("main", "FPS: %i", (int)fps_ema);
}
accum -= TICK_LENGTH;
}
/* Update and draw interface */
interface_update(&interface);
gui_object_redraw(GUI_OBJECT(&interface), game.frame);
/* TODO very crude dirty marking algortihm: mark everything. */
sdl_mark_dirty(0, 0, sdl_frame_get_width(game.frame),
sdl_frame_get_height(game.frame));
/* Swap video buffers */
sdl_swap_buffers();
/* Reduce framerate to target if we finished too fast */
int now = SDL_GetTicks();
int frametime_spent = now - last_frame;
if (frametime_spent < frametime_target) {
SDL_Delay(frametime_target - frametime_spent);
}
last_frame = SDL_GetTicks();
}
}