From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <Blake.Galbreath@GMail.com>
Date: Tue, 11 Feb 2020 21:56:48 -0600
Subject: [PATCH] EntityMoveEvent


diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 9e3dc2ba64b146d1715b81be7202ddbd0122382e..7ad22703d50667849e195d3e7b6792078104425c 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -1507,6 +1507,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
         while (iterator.hasNext()) {
             ServerLevel worldserver = (ServerLevel) iterator.next();
             worldserver.hasPhysicsEvent =  org.bukkit.event.block.BlockPhysicsEvent.getHandlerList().getRegisteredListeners().length > 0; // Paper
+            worldserver.hasEntityMoveEvent =  io.papermc.paper.event.entity.EntityMoveEvent.getHandlerList().getRegisteredListeners().length > 0; // Paper
 
             this.profiler.push(() -> {
                 return worldserver + " " + worldserver.dimension().location();
diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index 2af673fe240fbb0ce7667e207a833d09afa7074b..652b2c5dc17c6ba65eb59cbd3ac218d280fef044 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -217,6 +217,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
     public final LevelStorageSource.LevelStorageAccess convertable;
     public final UUID uuid;
     public boolean hasPhysicsEvent = true; // Paper
+    public boolean hasEntityMoveEvent = false; // Paper
     public static Throwable getAddToWorldStackTrace(Entity entity) {
         final Throwable thr = new Throwable(entity + " Added to world at " + new java.util.Date());
         io.papermc.paper.util.StacktraceDeobfuscator.INSTANCE.deobfuscateThrowable(thr);
diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index fcd670d1371dca3bb644dfea79f98670d75a68a4..276cdeb349c6b9c23ff4198beb807b5f090de3b6 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -3291,6 +3291,20 @@ public abstract class LivingEntity extends Entity implements Attackable {
 
         this.pushEntities();
         this.level.getProfiler().pop();
+        // Paper start
+        if (((ServerLevel) this.level).hasEntityMoveEvent && !(this instanceof net.minecraft.world.entity.player.Player)) {
+            if (this.xo != getX() || this.yo != this.getY() || this.zo != this.getZ() || this.yRotO != this.getYRot() || this.xRotO != this.getXRot()) {
+                Location from = new Location(this.level.getWorld(), this.xo, this.yo, this.zo, this.yRotO, this.xRotO);
+                Location to = new Location (this.level.getWorld(), this.getX(), this.getY(), this.getZ(), this.getYRot(), this.getXRot());
+                io.papermc.paper.event.entity.EntityMoveEvent event = new io.papermc.paper.event.entity.EntityMoveEvent(this.getBukkitLivingEntity(), from, to.clone());
+                if (!event.callEvent()) {
+                    absMoveTo(from.getX(), from.getY(), from.getZ(), from.getYaw(), from.getPitch());
+                } else if (!to.equals(event.getTo())) {
+                    absMoveTo(event.getTo().getX(), event.getTo().getY(), event.getTo().getZ(), event.getTo().getYaw(), event.getTo().getPitch());
+                }
+            }
+        }
+        // Paper end
         if (!this.level.isClientSide && this.isSensitiveToWater() && this.isInWaterRainOrBubble()) {
             this.hurt(this.damageSources().drown(), 1.0F);
         }