#776: Add ability to cancel ProjectileHitEvent

By: Martoph <sager1018@gmail.com>

paper-server/nms-patches/net/minecraft/world/entity/projectile/EntityArrow.patch

@@ -13,6 +13,15 @@
  public abstract class EntityArrow extends IProjectile {
  
      private static final DataWatcherObject<Byte> f = DataWatcher.a(EntityArrow.class, DataWatcherRegistry.a);
+@@ -181,7 +187,7 @@
+                 }
+ 
+                 if (object != null && !flag) {
+-                    this.a((MovingObjectPosition) object);
++                    this.preOnHit((MovingObjectPosition) object); // CraftBukkit - projectile hit event
+                     this.impulse = true;
+                 }
+ 
 @@ -328,7 +334,13 @@
          int k = entity.getFireTicks();