"deferred block updates": falling sand and flowing water

src/main.c

@@ -595,6 +595,10 @@ int main () {
     // Check if it's time to yield to the idle task
     task_yield();
 
+    if (deferred_block_updates_count == MAX_DEFERRED_BLOCK_UPDATES) {
+      printf("WARNING: Deferred block update queue maxed out\n");
+    }
+
     // Attempt to accept a new connection
     for (int i = 0; i < MAX_PLAYERS; i ++) {
       if (clients[i] != -1) continue;