be able to wake neko up with SIGUSR1

README

@@ -17,4 +17,3 @@ The following features are missing from this fork for now:
 - Neko does not yet behave differently at night.
 - Idle detection is working but implemented sloppily.
 - Pointer following is currently removed.
-- Waking up Neko with a signal is something that should be possible.

wayneko.1

@@ -111,6 +111,15 @@ close the surface for a different reason.
 .RE
 .
 .
+.SH SIGNALS
+.P
+\fBSIGUSR1\fR
+.RS
+You can send `wayneko` this signal to wake Neko up spontaneously. Neko won't notice
+anything it she is already awake. Example: `pkill -10 wayneko`
+.RE
+.
+.
 .SH AUTHOR
 .P
 Original code by

wayneko.c

@@ -99,6 +99,8 @@ uint32_t phase_sleep_max = 1800;
 uint32_t phase_awake_min = 120;
 uint32_t phase_awake_max = 600;
 
+bool wakeup_shock = false; /* will force a shock, used when woken up */
+
 struct Seat
 {
 	struct wl_list link;
@@ -230,6 +232,8 @@ static void handle_term (int signum)
 	loop = false;
 }
 
+static void wakeup(int signum);
+
 /**
  * Set up signal handlers.
  */
@@ -240,6 +244,8 @@ static void init_signals (void)
 
 	signal(SIGINT, handle_term);
 	signal(SIGTERM, handle_term);
+
+	signal(SIGUSR1, wakeup);
 }
 
 /************
@@ -930,6 +936,14 @@ static bool animation_next_state_with_hotspot (uint32_t x)
 /** Returns true if new frame is needed. */
 static bool animation_next_state_awake (void)
 {
+    /* neko was just suddenly woken up */
+    if (wakeup_shock) {
+        animation_neko_do_shock();
+
+        wakeup_shock = false;
+        return true;
+    }
+
 	switch (current_neko) {
 		case NEKO_STARE:
 			switch (rand() % 24)
@@ -1044,6 +1058,16 @@ static void check_phase(void) {
     }
 }
 
+/** called as a signal handler to wake up neko */
+static void wakeup(int signum) {
+    // already awake
+    if (current_phase == PHASE_AWAKE) return;
+
+    animation_ticks_until_next_frame = 0;
+    ticks_until_phase_change = 0; // will trigger a phase change to awake
+    wakeup_shock = true;
+}
+
 /** Returns true if new frame is needed. */
 static bool animation_next_state (void)
 {
@@ -1578,6 +1602,7 @@ int main (int argc, char *argv[])
 			}
 		}
 
+
 		/* Flush pending Wayland events/requests. */
 		while ( wl_display_prepare_read(wl_display) != 0 )
 		{
@@ -1588,6 +1613,7 @@ int main (int argc, char *argv[])
 				goto exit_main_loop;
 			}
 		}
+
 		while (true)
 		{
 			/* Returns the amount of bytes flushed. */
@@ -1606,11 +1632,12 @@ int main (int argc, char *argv[])
 
 		if ( poll(pollfds, 1, current_timeout) < 0 )
 		{
-			if ( errno == EINTR ) /* Interrupt: Signal received. */
-				continue;
-			fprintf(stderr, "ERROR: poll(): %s.\n", strerror(errno));
-			ret = EXIT_FAILURE;
-			break;
+			if ( errno != EINTR ) {
+			    /* Interrupt is NOT a signal */
+			    fprintf(stderr, "ERROR: poll(): %s.\n", strerror(errno));
+				ret = EXIT_FAILURE;
+				break;
+			}
 		}
 
 		if ( wl_display_read_events(wl_display) == -1 )
@@ -1618,6 +1645,7 @@ int main (int argc, char *argv[])
 			fprintf(stderr, "ERROR: wl_display_read_events(): %s.\n", strerror(errno));
 			break;
 		}
+
 		if ( wl_display_dispatch_pending(wl_display) == -1 )
 		{
 			fprintf(stderr, "ERROR: wl_display_dispatch_pending(): %s.\n", strerror(errno));