Fix bug with maps

connector/src/main/java/org/geysermc/connector/network/session/GeyserSession.java

@@ -48,6 +48,7 @@ import com.nukkitx.protocol.bedrock.BedrockServerSession;
 import com.nukkitx.protocol.bedrock.data.*;
 import com.nukkitx.protocol.bedrock.packet.*;
 import it.unimi.dsi.fastutil.longs.Long2ObjectMap;
+import it.unimi.dsi.fastutil.longs.Long2ObjectMaps;
 import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
 import it.unimi.dsi.fastutil.objects.Object2LongMap;
 import it.unimi.dsi.fastutil.objects.Object2LongOpenHashMap;
@@ -107,7 +108,7 @@ public class GeyserSession implements CommandSender {
     private TeleportCache teleportCache;
 
     @Getter
-    private final Long2ObjectMap<ClientboundMapItemDataPacket> storedMaps = new Long2ObjectOpenHashMap<>();
+    private final Long2ObjectMap<ClientboundMapItemDataPacket> storedMaps = Long2ObjectMaps.synchronize(new Long2ObjectOpenHashMap<>());
 
     /**
      * A map of Vector3i positions to Java entity IDs.

connector/src/main/java/org/geysermc/connector/network/translators/bedrock/BedrockMapInfoRequestTranslator.java

@@ -25,6 +25,7 @@
 
 package org.geysermc.connector.network.translators.bedrock;
 
+import com.nukkitx.protocol.bedrock.packet.ClientboundMapItemDataPacket;
 import com.nukkitx.protocol.bedrock.packet.MapInfoRequestPacket;
 import org.geysermc.connector.GeyserConnector;
 import org.geysermc.connector.network.session.GeyserSession;
@@ -39,16 +40,14 @@ public class BedrockMapInfoRequestTranslator extends PacketTranslator<MapInfoReq
     @Override
     public void translate(MapInfoRequestPacket packet, GeyserSession session) {
         long mapID = packet.getUniqueMapId();
-        if (mapID <= -1l) {
-            mapID = 0l;
-        }
 
         if (session.getStoredMaps().containsKey(mapID)) {
             // Delay the packet 100ms to prevent the client from ignoring the packet
-            long finalMapID = mapID;
             GeyserConnector.getInstance().getGeneralThreadPool().schedule(() -> {
-                session.sendUpstreamPacket(session.getStoredMaps().get(finalMapID));
+                ClientboundMapItemDataPacket mapPacket = session.getStoredMaps().remove(mapID);
-                session.getStoredMaps().remove(finalMapID);
+                if (mapPacket != null) {
+                    session.sendUpstreamPacket(mapPacket);
+                }
             }, 100, TimeUnit.MILLISECONDS);
         }
     }

connector/src/main/java/org/geysermc/connector/network/translators/java/world/JavaMapDataTranslator.java

@@ -85,11 +85,7 @@ public class JavaMapDataTranslator extends PacketTranslator<ServerMapDataPacket>
 
         // Store the map to send when the client requests it, as bedrock expects the data after a MapInfoRequestPacket
         if (shouldStore) {
-            long uniqueMapId = mapItemDataPacket.getUniqueMapId();
+            session.getStoredMaps().put(mapItemDataPacket.getUniqueMapId(), mapItemDataPacket);
-            if (uniqueMapId <= -1l) {
-                uniqueMapId = 0l;
-            }
-            session.getStoredMaps().put(uniqueMapId, mapItemDataPacket);
         }
 
         // Send anyway just in case