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ViewerEngineListener not tracking disconnects#72

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Merged
Tofaa2 merged 2 commits into from
Jul 7, 2026
Merged

ViewerEngineListener not tracking disconnects #72

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83eead7
fix: ViewerEngineListener not handling UserDisconnectEvent
Chubbyduck1 Jul 7, 2026
0d0c44a
fix: Disconnect sending packets, and running off executor
Chubbyduck1 Jul 7, 2026
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20 changes: 20 additions & 0 deletions api/src/main/java/me/tofaa/entitylib/ve/ViewerEngineListener.java
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Original file line numberDiff line numberDiff line change
Expand Up@@ -2,6 +2,7 @@

import com.github.retrooper.packetevents.event.PacketListenerAbstract;
import com.github.retrooper.packetevents.event.PacketSendEvent;
import com.github.retrooper.packetevents.event.UserDisconnectEvent;
import com.github.retrooper.packetevents.protocol.packettype.PacketType;
import com.github.retrooper.packetevents.protocol.packettype.PacketTypeCommon;
import com.github.retrooper.packetevents.protocol.player.User;
Expand All@@ -11,6 +12,7 @@
import me.tofaa.entitylib.utils.Check;
import me.tofaa.entitylib.wrapper.WrapperEntity;

import java.util.UUID;
import java.util.function.Consumer;

final class ViewerEngineListener extends PacketListenerAbstract {
Expand DownExpand Up@@ -81,6 +83,24 @@ else if (type == PacketType.Play.Server.CHUNK_DATA) {
}
}

@Override
public void onUserDisconnect(final UserDisconnectEvent event) {
engine.getExecutor().execute(() -> {
final UUID uniqueId = event.getUser().getUUID();

// Note from Chubbyduck1: While this says it's non-null, it can actually be null in this case. Not sure why. When run without this, it would spam NPEs for me.
if (uniqueId == null) {
return;
}

engine.getTracked0().forEach(entity -> {
if (entity.hasViewer(uniqueId)) {
entity.removeViewerSilently(uniqueId);
}
});
});
}

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private void genericSpawnCheck(int entityId, User user) {
WrapperEntity entity = EntityLib.getApi().getEntity(entityId);
if (entity == null) return;
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