From f370fc6d1965924a7b6909f0607effca24c934e8 Mon Sep 17 00:00:00 2001
From: Archonic <55026152+Archonic944@users.noreply.github.com>
Date: Mon, 28 Mar 2022 13:03:26 -0700
Subject: [PATCH] Added better PlayerVelocityEvent support (#391)

- PlayerVelocityEvent now details if the event was fired from player attack knockback
---
 .../bukkit/event/player/PlayerVelocityEvent.java | 16 +++++++++++++++-
 .../java/net/minecraft/server/EntityHuman.java   |  2 +-
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/NachoSpigot-API/src/main/java/org/bukkit/event/player/PlayerVelocityEvent.java b/NachoSpigot-API/src/main/java/org/bukkit/event/player/PlayerVelocityEvent.java
index 69d2fce4a..b0bb08106 100644
--- a/NachoSpigot-API/src/main/java/org/bukkit/event/player/PlayerVelocityEvent.java
+++ b/NachoSpigot-API/src/main/java/org/bukkit/event/player/PlayerVelocityEvent.java
@@ -12,10 +12,16 @@ public class PlayerVelocityEvent extends PlayerEvent implements Cancellable {
     private static final HandlerList handlers = new HandlerList();
     private boolean cancel = false;
     private Vector velocity;
+    private final boolean fromAttack;
 
-    public PlayerVelocityEvent(final Player player, final Vector velocity) {
+    public PlayerVelocityEvent(final Player player, final Vector velocity, final boolean fromPlayerBeingAttacked) {
         super(player);
         this.velocity = velocity;
+        this.fromAttack = fromPlayerBeingAttacked;
+    }
+
+    public PlayerVelocityEvent(final Player player, final Vector velocity) {
+        this(player, velocity, false);
     }
 
     public boolean isCancelled() {
@@ -52,4 +58,12 @@ public HandlerList getHandlers() {
     public static HandlerList getHandlerList() {
         return handlers;
     }
+
+    /**
+     *
+     * @return Whether this velocity change was triggered due to the player being attacked by another player.
+     */
+    public boolean fromPlayerBeingAttacked(){
+        return fromAttack;
+    }
 }
diff --git a/NachoSpigot-Server/src/main/java/net/minecraft/server/EntityHuman.java b/NachoSpigot-Server/src/main/java/net/minecraft/server/EntityHuman.java
index d10c5472c..1539eb61e 100644
--- a/NachoSpigot-Server/src/main/java/net/minecraft/server/EntityHuman.java
+++ b/NachoSpigot-Server/src/main/java/net/minecraft/server/EntityHuman.java
@@ -1025,7 +1025,7 @@ public void attack(Entity entity) {
                         if (entity instanceof EntityPlayer && entity.velocityChanged) {
                             Player player = (Player) entity.getBukkitEntity();
                             final Vector velocity = new Vector(entity.motX, entity.motY, entity.motZ);
-                            PlayerVelocityEvent event = new PlayerVelocityEvent(player, velocity);
+                            PlayerVelocityEvent event = new PlayerVelocityEvent(player, velocity, true);
                             world.getServer().getPluginManager().callEvent(event);
 
                             if (!event.isCancelled()) {