PaperMC/nms-patches/EntityShulkerBullet.patch

--- a/net/minecraft/server/EntityShulkerBullet.java
+++ b/net/minecraft/server/EntityShulkerBullet.java
@@ -42,8 +42,29 @@
         this.target = entity;
         this.c = EnumDirection.UP;
         this.a(enumdirection_enumaxis);
+        projectileSource = (org.bukkit.entity.LivingEntity) entityliving.getBukkitEntity(); // CraftBukkit
     }
 
+    // CraftBukkit start
+    public EntityLiving getShooter() {
+        return this.shooter;
+    }
+
+    public void setShooter(EntityLiving e) {
+        this.shooter = e;
+    }
+
+    public Entity getTarget() {
+        return this.target;
+    }
+
+    public void setTarget(Entity e) {
+        this.target = e;
+        this.c = EnumDirection.UP;
+        this.a(EnumDirection.EnumAxis.X);
+    }
+    // CraftBukkit end
+
     public SoundCategory bV() {
         return SoundCategory.HOSTILE;
     }
@@ -287,6 +308,7 @@
     }
 
     protected void a(MovingObjectPosition movingobjectposition) {
+        org.bukkit.craftbukkit.event.CraftEventFactory.callProjectileHitEvent(this, movingobjectposition); // Craftbukkit - Call event
         if (movingobjectposition.entity == null) {
             ((WorldServer) this.world).a(Particles.u, this.locX, this.locY, this.locZ, 2, 0.2D, 0.2D, 0.2D, 0.0D);
             this.a(SoundEffects.ENTITY_SHULKER_BULLET_HIT, 1.0F, 1.0F);
@@ -296,7 +318,7 @@
             if (flag) {
                 this.a(this.shooter, movingobjectposition.entity);
                 if (movingobjectposition.entity instanceof EntityLiving) {
-                    ((EntityLiving) movingobjectposition.entity).addEffect(new MobEffect(MobEffects.LEVITATION, 200));
+                    ((EntityLiving) movingobjectposition.entity).addEffect(new MobEffect(MobEffects.LEVITATION, 200), org.bukkit.event.entity.EntityPotionEffectEvent.Cause.ATTACK); // CraftBukkit
                 }
             }
         }