From 26e2ea6f7f563be44fdc37919251dae52d6142c5 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Fri, 28 Nov 2014 00:24:18 -0600
Subject: [PATCH] Teleport passenger/vehicle with player


diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index b0a90d7..1e5f057 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -40,6 +40,13 @@ public abstract class Entity implements ICommandListener {
         return tag.hasKey("Bukkit.updateLevel") && tag.getInt("Bukkit.updateLevel") >= level;
     }
     // CraftBukikt end
+    // PaperSpigot start - Teleport passenger vehicle with player
+    public void retrack() {
+        final EntityTracker entityTracker = ((WorldServer) world).getTracker();
+        entityTracker.untrackEntity(this);
+        entityTracker.track(this);
+    }
+    // PaperSpigot end
 
     private static final AxisAlignedBB a = new AxisAlignedBB(0.0D, 0.0D, 0.0D, 0.0D, 0.0D, 0.0D);
     private static int entityCount;
@@ -1949,7 +1956,7 @@ public abstract class Entity implements ICommandListener {
             // minecraftserver.getPlayerList().changeWorld(this, j, worldserver, worldserver1);
             boolean before = worldserver1.chunkProviderServer.forceChunkLoad;
             worldserver1.chunkProviderServer.forceChunkLoad = true;
-            worldserver1.getMinecraftServer().getPlayerList().repositionEntity(this, exit, portal);
+            //worldserver1.getMinecraftServer().getPlayerList().repositionEntity(this, exit, portal); // PaperSpigot - no... this entity is dead
             worldserver1.chunkProviderServer.forceChunkLoad = before;
             // CraftBukkit end
             this.world.methodProfiler.c("reloading");
@@ -1957,6 +1964,10 @@ public abstract class Entity implements ICommandListener {
 
             if (entity != null) {
                 entity.n(this);
+                // PaperSpigot start - move entity to new location
+                exit.getBlock(); // force load
+                entity.setLocation(exit.getX(), exit.getY(), exit.getZ(), exit.getYaw(), exit.getPitch());
+                // PaperSpigot end
                 /* CraftBukkit start - We need to do this...
                 if (j == 1 && i == 1) {
                     BlockPosition blockposition = this.world.r(worldserver1.getSpawn());
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index d1f69dc..8a2d6e0 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -451,7 +451,27 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
         }
 
         // If this player is riding another entity, we must dismount before teleporting.
-        entity.mount(null);
+        // PaperSpigot start
+        entity.mount(null); // Comment out when fully working, until then leave this
+
+        Entity vehicle = entity.vehicle;
+        Entity passenger = entity.passenger;
+        if (vehicle != null) {
+            vehicle.passenger = null;
+            vehicle.teleportTo(location, false);
+            vehicle = vehicle.getBukkitEntity().getHandle();
+            entity.vehicle = vehicle;
+            vehicle.passenger = entity;
+        }
+
+        if (passenger != null) {
+            passenger.vehicle = null;
+            passenger.teleportTo(location, false);
+            passenger = passenger.getBukkitEntity().getHandle();
+            entity.passenger = passenger;
+            passenger.vehicle = entity;
+        }
+        // PaperSpigot end
 
         // Update the From Location
         from = event.getFrom();
@@ -472,6 +492,17 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
         } else {
             server.getHandle().moveToWorld(entity, toWorld.dimension, true, to, true);
         }
+
+        // PaperSpigot start
+        if (vehicle != null) {
+            vehicle.retrack();
+        }
+
+        if (passenger != null) {
+            passenger.retrack();
+        }
+        // PaperSpigot end
+
         return true;
     }
 
-- 
1.9.1