Invert condition

SpigotCore_Main/src/de/steamwar/core/CheckpointUtils.java

@@ -60,27 +60,27 @@ public class CheckpointUtils {
         Bukkit.getOnlinePlayers().forEach(player -> player.kickPlayer(null));
 
         List<?> networkManagers = TinyProtocol.networkManagers.get(TinyProtocol.getServerConnection(Core.getInstance()));
-        if(networkManagers.isEmpty()) {
+        if(!networkManagers.isEmpty()) {
-            Path path = FileSystems.getDefault().getPath(checkpointFile);
+            Core.getInstance().getLogger().log(Level.INFO, "Waiting for players to disconnect for checkpointing");
-
+            Bukkit.getScheduler().runTaskLater(Core.getInstance(), CheckpointUtils::freeze, 1);
-            try {
-                freezeInternal(path);
-            } catch (Exception e) {
-                Bukkit.shutdown();
-                throw new SecurityException(e);
-            } finally {
-                // Delete checkpoint
-                try (Stream<Path> stream = Files.walk(path)) {
-                    stream.sorted(Comparator.reverseOrder()).map(Path::toFile).forEach(File::delete);
-                } catch (IOException e) {
-                    //ignore
-                }
-            }
             return;
         }
 
-        Core.getInstance().getLogger().log(Level.INFO, "Waiting for players to disconnect for checkpointing");
+        Path path = FileSystems.getDefault().getPath(checkpointFile);
-        Bukkit.getScheduler().runTaskLater(Core.getInstance(), CheckpointUtils::freeze, 1);
+
+        try {
+            freezeInternal(path);
+        } catch (Exception e) {
+            Bukkit.shutdown();
+            throw new SecurityException(e);
+        } finally {
+            // Delete checkpoint
+            try (Stream<Path> stream = Files.walk(path)) {
+                stream.sorted(Comparator.reverseOrder()).map(Path::toFile).forEach(File::delete);
+            } catch (IOException e) {
+                //ignore
+            }
+        }
     }
 
     private static final Reflection.FieldAccessor<List> channelFutures = Reflection.getField(TinyProtocol.serverConnection, List.class, 0, ChannelFuture.class);