1 files changed, 103 insertions, 0 deletions
diff --git a/Spigot-Server-Patches/0129-Entity-Tracking-Improvements.patch b/Spigot-Server-Patches/0129-Entity-Tracking-Improvements.patch
new file mode 100644
index 0000000000..349a9c13ad
--- /dev/null
+++ b/Spigot-Server-Patches/0129-Entity-Tracking-Improvements.patch
@@ -0,0 +1,103 @@
+From d0d65d40d665bd4857968bce815a16b73fb71992 Mon Sep 17 00:00:00 2001
+From: Aikar <[email protected]>
+Date: Mon, 17 Jun 2013 01:24:00 -0400
+Subject: [PATCH] Entity Tracking Improvements
+
+If any part of a Vehicle/Passenger relationship is visible to a player,
+send all passenger/vehicles to the player in the chain.
+
+diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
+index 0f4a1b66b..96b1e9a78 100644
+--- a/src/main/java/net/minecraft/server/Entity.java
++++ b/src/main/java/net/minecraft/server/Entity.java
+@@ -53,6 +53,7 @@ public abstract class Entity implements ICommandListener {
+ 
+     protected CraftEntity bukkitEntity;
+ 
++    EntityTrackerEntry tracker; // Paper
+     public CraftEntity getBukkitEntity() {
+         if (bukkitEntity == null) {
+             bukkitEntity = CraftEntity.getEntity(world.getServer(), this);
+diff --git a/src/main/java/net/minecraft/server/EntityTrackerEntry.java b/src/main/java/net/minecraft/server/EntityTrackerEntry.java
+index fbda70a39..c28b4bd44 100644
+--- a/src/main/java/net/minecraft/server/EntityTrackerEntry.java
++++ b/src/main/java/net/minecraft/server/EntityTrackerEntry.java
+@@ -49,6 +49,7 @@ public class EntityTrackerEntry {
+     // Paper end
+ 
+     public EntityTrackerEntry(Entity entity, int i, int j, int k, boolean flag) {
++        entity.tracker = this; // Paper
+         this.tracker = entity;
+         this.e = i;
+         this.f = j;
+@@ -446,17 +447,59 @@ public class EntityTrackerEntry {
+ 
+                     this.tracker.b(entityplayer);
+                     entityplayer.d(this.tracker);
++                    updatePassengers(entityplayer); // Paper
+                 }
+             } else if (this.trackedPlayers.contains(entityplayer)) {
+                 this.trackedPlayers.remove(entityplayer);
+                 this.tracker.c(entityplayer);
+                 entityplayer.c(this.tracker);
++                updatePassengers(entityplayer); // Paper
+             }
+ 
+         }
+     }
+ 
+     public boolean c(EntityPlayer entityplayer) {
++        // Paper start
++        if (tracker.isPassenger()) {
++            return isTrackedBy(tracker.getVehicle(), entityplayer);
++        } else if (hasPassengerInRange(tracker, entityplayer)) {
++            return true;
++        }
++
++        return isInRangeOfPlayer(entityplayer);
++    }
++    private static boolean hasPassengerInRange(Entity entity, EntityPlayer entityplayer) {
++        if (!entity.isVehicle()) {
++            return false;
++        }
++        for (Entity passenger : entity.passengers) {
++            if (passenger.tracker != null && passenger.tracker.isInRangeOfPlayer(entityplayer)) {
++                return true;
++            }
++            if (passenger.isVehicle()) {
++                if (hasPassengerInRange(passenger, entityplayer)) {
++                    return true;
++                }
++            }
++        }
++        return false;
++    }
++    private static boolean isTrackedBy(Entity entity, EntityPlayer entityplayer) {
++        return entity == entityplayer || entity.tracker != null && entity.tracker.trackedPlayers.contains(entityplayer);
++    }
++    private void updatePassengers(EntityPlayer player) {
++        if (tracker.isVehicle()) {
++            tracker.passengers.forEach((e) -> {
++                if (e.tracker != null) {
++                    e.tracker.updatePlayer(player);
++                }
++            });
++            player.playerConnection.sendPacket(new PacketPlayOutMount(this.tracker));
++        }
++    }
++    private boolean isInRangeOfPlayer(EntityPlayer entityplayer) {
++        // Paper end
+         double d0 = entityplayer.locX - (double) this.xLoc / 4096.0D;
+         double d1 = entityplayer.locZ - (double) this.zLoc / 4096.0D;
+         int i = Math.min(this.e, this.f);
+@@ -593,6 +636,7 @@ public class EntityTrackerEntry {
+             this.trackedPlayers.remove(entityplayer);
+             this.tracker.c(entityplayer);
+             entityplayer.c(this.tracker);
++            updatePassengers(entityplayer); // Paper
+         }
+ 
+     }
+-- 
+2.12.2.windows.2
+