From 96f03d906578da759c1cf1d4caff7e7cd49cf18c Mon Sep 17 00:00:00 2001
From: md_5 <git@md-5.net>
Date: Fri, 23 Dec 2016 22:39:33 +1100
Subject: [PATCH] SPIGOT-2127: Add DamageCause.ENTITY_SWEEP_ATTACK

---
 nms-patches/DamageSource.patch                | 21 +++++++++++++++++++
 nms-patches/EntityHuman.patch                 |  2 +-
 .../craftbukkit/event/CraftEventFactory.java  |  2 +-
 3 files changed, 23 insertions(+), 2 deletions(-)
 create mode 100644 nms-patches/DamageSource.patch

diff --git a/nms-patches/DamageSource.patch b/nms-patches/DamageSource.patch
new file mode 100644
index 000000000..ac9ca78e7
--- /dev/null
+++ b/nms-patches/DamageSource.patch
@@ -0,0 +1,21 @@
+--- a/net/minecraft/server/DamageSource.java
++++ b/net/minecraft/server/DamageSource.java
+@@ -34,6 +34,18 @@
+     private boolean C;
+     private boolean D;
+     public String translationIndex;
++    // CraftBukkit start
++    private boolean sweep;
++
++    public boolean isSweep() {
++        return sweep;
++    }
++
++    public DamageSource sweep() {
++        this.sweep = true;
++        return this;
++    }
++    // CraftBukkit end
+ 
+     public static DamageSource mobAttack(EntityLiving entityliving) {
+         return new EntityDamageSource("mob", entityliving);
diff --git a/nms-patches/EntityHuman.patch b/nms-patches/EntityHuman.patch
index fce5fd79b..7bc17380f 100644
--- a/nms-patches/EntityHuman.patch
+++ b/nms-patches/EntityHuman.patch
@@ -279,7 +279,7 @@
  
                                  if (entityliving != this && entityliving != entity && !this.r(entityliving) && this.h(entityliving) < 9.0D) {
 +                                    // CraftBukkit start - Only apply knockback if the damage hits
-+                                    if (entityliving.damageEntity(DamageSource.playerAttack(this), f4)) {
++                                    if (entityliving.damageEntity(DamageSource.playerAttack(this).sweep(), f4)) {
                                      entityliving.a(this, 0.4F, (double) MathHelper.sin(this.yaw * 0.017453292F), (double) (-MathHelper.cos(this.yaw * 0.017453292F)));
 -                                    entityliving.damageEntity(DamageSource.playerAttack(this), f4);
 +                                    }
diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
index 74faf9955..a6c152834 100644
--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
@@ -464,7 +464,7 @@ public class CraftEventFactory {
             return event;
         } else if (source instanceof EntityDamageSource) {
             Entity damager = source.getEntity();
-            DamageCause cause = DamageCause.ENTITY_ATTACK;
+            DamageCause cause = (source.isSweep()) ? DamageCause.ENTITY_SWEEP_ATTACK : DamageCause.ENTITY_ATTACK;
 
             if (source instanceof EntityDamageSourceIndirect) {
                 damager = ((EntityDamageSourceIndirect) source).getProximateDamageSource();