funny packets

Author: nothub

src/main/java/org/cloudanarchy/queueplugin/EventCanceler.java

@@ -9,6 +9,8 @@
 import org.bukkit.event.entity.EntitySpawnEvent;
 import org.bukkit.event.player.PlayerCommandPreprocessEvent;
 import org.bukkit.plugin.java.JavaPlugin;
+import org.cloudanarchy.queueplugin.packetwrapper.PacketGameState;
+import org.cloudanarchy.queueplugin.packetwrapper.PacketPlayerInfo;
 
 import java.util.HashSet;
 import java.util.Set;
@@ -35,21 +37,37 @@ public void onPacketReceiving(PacketEvent ev) {
 
     @Override
     public void onPacketSending(PacketEvent ev) {
+
         // these are needed or a notchian client will not join
         if (ev.getPacketType() == PacketType.Play.Server.KEEP_ALIVE) return;
-        if (ev.getPacketType() == PacketType.Play.Server.POSITION) return;
         if (ev.getPacketType() == PacketType.Play.Server.LOGIN) return;
+        if (ev.getPacketType() == PacketType.Play.Server.POSITION) return;
+
+        // for chat notifications
         if (ev.getPacketType() == PacketType.Play.Server.CHAT) return;
 
         // this keeps the player from falling (flying ability)
         if (ev.getPacketType() == PacketType.Play.Server.ABILITIES) return;
 
-        // if we dont send this, player has default skin lol
-        if (ev.getPacketType() == PacketType.Play.Server.PLAYER_INFO) return;
-
         // this keeps hacked clients from showing server as lagging
         if (ev.getPacketType() == PacketType.Play.Server.UPDATE_TIME) return;
 
+        // if we dont send this, player has default skin lol
+        if (ev.getPacketType() == PacketType.Play.Server.PLAYER_INFO) {
+            PacketPlayerInfo packet = new PacketPlayerInfo(ev.getPacket());
+            // send players only their own data? or dont send this packet at all...
+            if (packet.getData() != null)
+                packet.setData(packet.getData().stream().filter(data -> data.getProfile().getUUID().equals(ev.getPlayer().getUniqueId())).collect(Collectors.toList()));
+            return;
+        }
+
+        // this is for fun
+        if (ev.getPacketType() == PacketType.Play.Server.GAME_STATE_CHANGE) {
+            PacketGameState packet = new PacketGameState(ev.getPacket());
+            // allow credit screen
+            if (packet.getReason() == 4 && packet.getValue() == 1) return;
+        }
+
         ev.setCancelled(true);
     }
 

src/main/java/org/cloudanarchy/queueplugin/QueuePlugin.java

@@ -14,20 +14,32 @@
 import org.bukkit.event.player.PlayerRespawnEvent;
 import org.bukkit.plugin.java.JavaPlugin;
 import org.bukkit.scheduler.BukkitRunnable;
+import org.cloudanarchy.queueplugin.packetwrapper.PacketGameState;
 import org.jetbrains.annotations.NotNull;
 
 public final class QueuePlugin extends JavaPlugin implements Listener {
 
+    private static final PacketGameState creditScreenPacket = PacketGameState.creditScreenPacket();
+
     private void process(@NotNull Player player) {
         player.teleport(new Location(getServer().getWorlds().get(0), 0, 140, 0));
         player.setAllowFlight(true);
         player.setFlying(true);
+        player.setInvisible(true);
+        player.setInvulnerable(true);
         player.setGameMode(GameMode.SPECTATOR);
         for (Player p : getServer().getOnlinePlayers()) {
             if (player.equals(p)) continue;
             player.hidePlayer(this, p);
             p.hidePlayer(this, player);
         }
+        // win blockgame while some other players are in queue
+        if (getServer().getOnlinePlayers().size() < 4) return;
+        try {
+            creditScreenPacket.sendPacket(player);
+        } catch (RuntimeException ex) {
+            getLogger().warning("Unable to send fake packet: " + ex.getMessage());
+        }
     }
 
     @Override