Fix: Resolve unexpected teleport confirmation ID kick on 1.9+ servers

Author: Ghost-Kokoro

viaforge-mc189/src/main/java/com/viaversion/viaforge/mixin/impl/MixinNetHandlerPlayClient.java

@@ -18,8 +18,8 @@
 
 package com.viaversion.viaforge.mixin.impl;
 
-import com.viaversion.viaforge.mixin.impl.interfaces.IS08;
 import com.viaversion.viarewind.protocol.v1_9to1_8.Protocol1_9To1_8;
+import com.viaversion.viarewind.protocol.v1_9to1_8.storage.PlayerPositionTracker;
 import com.viaversion.viaversion.api.connection.UserConnection;
 import com.viaversion.viaversion.api.protocol.packet.PacketWrapper;
 import com.viaversion.viaversion.api.protocol.version.ProtocolVersion;
@@ -59,9 +59,15 @@ public void handleTeleportPacket(S08PacketPlayerPosLook packetIn, CallbackInfo c
         }
 
         if (ViaForgeCommon.getManager().getTargetVersion().newerThanOrEqualTo(ProtocolVersion.v1_9)) {
-            PacketWrapper packet = PacketWrapper.create(ServerboundPackets1_9.ACCEPT_TELEPORTATION, connection);
-            packet.write(Types.VAR_INT, ((IS08)packetIn).getTeleportId());
-            packet.sendToServer(Protocol1_9To1_8.class);
+            PlayerPositionTracker tracker = connection.get(PlayerPositionTracker.class);
+            if (tracker != null && tracker.getConfirmId() != -1) {
+
+                PacketWrapper packet = PacketWrapper.create(ServerboundPackets1_9.ACCEPT_TELEPORTATION, connection);
+                packet.write(Types.VAR_INT, tracker.getConfirmId());
+                packet.sendToServer(Protocol1_9To1_8.class);
+
+                tracker.setConfirmId(-1);
+            }
         }
     }
 }

viaforge-mc189/src/main/java/com/viaversion/viaforge/mixin/impl/MixinS08PacketPlayerPosLook.java

@@ -11,7 +11,6 @@
     "MixinGuiScreenAddServer",
     "MixinGuiScreenServerList",
     "MixinNetHandlerPlayClient",
-    "MixinS08PacketPlayerPosLook",
     "MixinServerData",
     "compatibility.patcher.MixinProtocolVersionDetector",
     "connect.MixinGuiConnecting_1",