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path: root/Spigot-Server-Patches/0251-EndermanEscapeEvent.patch
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From fe971f1d83405580471c21f76c03dedbe9ba515e Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Mon, 30 Apr 2018 13:15:55 -0400
Subject: [PATCH] EndermanEscapeEvent

Fires an event anytime an enderman intends to teleport away from the player

You may cancel this, enabling ranged attacks to damage the enderman for example.

diff --git a/src/main/java/net/minecraft/server/EntityEnderman.java b/src/main/java/net/minecraft/server/EntityEnderman.java
index d5d1be8b6..8949529e6 100644
--- a/src/main/java/net/minecraft/server/EntityEnderman.java
+++ b/src/main/java/net/minecraft/server/EntityEnderman.java
@@ -1,6 +1,7 @@
 package net.minecraft.server;
 
 import java.util.Optional;
+import com.destroystokyo.paper.event.entity.EndermanEscapeEvent; // Paper
 import java.util.Random;
 import java.util.UUID;
 import java.util.function.Function;
@@ -48,6 +49,12 @@ public class EntityEnderman extends EntityMonster {
         setGoalTarget(entityliving, org.bukkit.event.entity.EntityTargetEvent.TargetReason.UNKNOWN, true);
     }
 
+    // Paper start
+    private boolean tryEscape(EndermanEscapeEvent.Reason reason) {
+        return new EndermanEscapeEvent((org.bukkit.craftbukkit.entity.CraftEnderman) this.getBukkitEntity(), reason).callEvent();
+    }
+    // Paper end
+
     @Override
     public boolean setGoalTarget(EntityLiving entityliving, org.bukkit.event.entity.EntityTargetEvent.TargetReason reason, boolean fireEvent) {
         if (!super.setGoalTarget(entityliving, reason, fireEvent)) {
@@ -160,7 +167,7 @@ public class EntityEnderman extends EntityMonster {
         if (this.world.L() && this.ticksLived >= this.bE + 600) {
             float f = this.az();
 
-            if (f > 0.5F && this.world.e(new BlockPosition(this)) && this.random.nextFloat() * 30.0F < (f - 0.4F) * 2.0F) {
+            if (f > 0.5F && this.world.e(new BlockPosition(this)) && this.random.nextFloat() * 30.0F < (f - 0.4F) * 2.0F && tryEscape(EndermanEscapeEvent.Reason.RUNAWAY)) { // Paper
                 this.setGoalTarget((EntityLiving) null);
                 this.dz();
             }
@@ -239,7 +246,7 @@ public class EntityEnderman extends EntityMonster {
     public boolean damageEntity(DamageSource damagesource, float f) {
         if (this.isInvulnerable(damagesource)) {
             return false;
-        } else if (damagesource instanceof EntityDamageSourceIndirect) {
+        } else if (damagesource instanceof EntityDamageSourceIndirect && tryEscape(EndermanEscapeEvent.Reason.INDIRECT)) { // Paper
             for (int i = 0; i < 64; ++i) {
                 if (this.dz()) {
                     return true;
@@ -250,7 +257,7 @@ public class EntityEnderman extends EntityMonster {
         } else {
             boolean flag = super.damageEntity(damagesource, f);
 
-            if (damagesource.ignoresArmor() && this.random.nextInt(10) != 0) {
+            if (damagesource.ignoresArmor() && this.random.nextInt(10) != 0 && tryEscape(damagesource == DamageSource.DROWN ? EndermanEscapeEvent.Reason.DROWN : EndermanEscapeEvent.Reason.CRITICAL_HIT)) { // Paper
                 this.dz();
             }
 
@@ -339,7 +346,7 @@ public class EntityEnderman extends EntityMonster {
 
     static class PathfinderGoalPlayerWhoLookedAtTarget extends PathfinderGoalNearestAttackableTarget<EntityHuman> {
 
-        private final EntityEnderman i;
+        private final EntityEnderman i; public EntityEnderman getEnderman() { return i; } // Paper - OBFHELPER
         private EntityHuman j;
         private int k;
         private int l;
@@ -391,7 +398,7 @@ public class EntityEnderman extends EntityMonster {
             } else {
                 if (this.d != null) {
                     if (this.i.f((EntityHuman) this.d)) {
-                        if (((EntityHuman) this.d).h(this.i) < 16.0D) {
+                        if (((EntityHuman) this.d).h(this.i) < 16.0D && this.getEnderman().tryEscape(EndermanEscapeEvent.Reason.STARE)) { // Paper
                             this.i.dz();
                         }
 
-- 
2.21.0