PaperMC/Remapped-Spigot-Server-Patches/0664-EntityMoveEvent.patch

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 892ca65d258b0745be95d7ef4886c49899b24d92..bc44811f26076871848ba8f5c582ab26b1fd7170 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -13,6 +13,7 @@ import io.netty.buffer.ByteBuf;
 import io.netty.buffer.ByteBufOutputStream;
 import io.netty.buffer.Unpooled;
 import io.papermc.paper.adventure.PaperAdventure; // Paper
+import io.papermc.paper.event.entity.EntityMoveEvent;
 import it.unimi.dsi.fastutil.longs.LongIterator;
 import java.awt.image.BufferedImage;
 import java.io.BufferedWriter;
@@ -1458,6 +1459,7 @@ 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 =  EntityMoveEvent.getHandlerList().getRegisteredListeners().length > 0; // Paper
             HopperBlockEntity.skipHopperEvents = worldserver.paperConfig.disableHopperMoveEvents || org.bukkit.event.inventory.InventoryMoveItemEvent.getHandlerList().getRegisteredListeners().length == 0; // Paper
 
             this.profiler.push(() -> {
diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index 9f1838d12b13d64f10871eb672ed2aec78d9936e..338b4c382fb8ea349ce81f2009e96de1df7ac5e2 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -207,6 +207,7 @@ public class ServerLevel extends net.minecraft.world.level.Level implements Worl
     public final LevelStorageSource.LevelStorageAccess convertable;
     public final UUID uuid;
     public boolean hasPhysicsEvent = true; // Paper
+    public boolean hasEntityMoveEvent = false; // Paper
     private static Throwable getAddToWorldStackTrace(Entity entity) {
         return new Throwable(entity + " Added to world at " + new java.util.Date());
     }
diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index 02ddb84c563b3149c4f1b0e24899ce8a21ad61bb..8bc74878919ab7cf6a50d425da61f1b8a8b0ee44 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -10,6 +10,7 @@ import com.mojang.datafixers.util.Pair;
 import com.mojang.serialization.DataResult;
 import com.mojang.serialization.Dynamic;
 import com.mojang.serialization.DynamicOps;
+import io.papermc.paper.event.entity.EntityMoveEvent;
 import java.util.Collection;
 import java.util.ConcurrentModificationException;
 import java.util.Iterator;
@@ -2909,6 +2910,20 @@ public abstract class LivingEntity extends Entity {
 
         this.pushEntities();
         this.level.getProfiler().pop();
+        // Paper start
+        if (((ServerLevel) level).hasEntityMoveEvent) {
+            if (xo != getX() || yo != getY() || zo != getZ() || yRotO != yRot || xRotO != xRot) {
+                Location from = new Location(level.getWorld(), xo, yo, zo, yRotO, xRotO);
+                Location to = new Location (level.getWorld(), getX(), getY(), getZ(), yRot, xRot);
+                EntityMoveEvent event = new EntityMoveEvent(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(DamageSource.DROWN, 1.0F);
         }