Lazy set Entity.projectileSource in AbstractProjectile#getShooter

Fixes #13475
Supersedes #13643
Supersedes 13481

Author: Owen1212055

paper-server/patches/sources/net/minecraft/world/entity/projectile/Projectile.java.patch

@@ -8,32 +8,6 @@
 
      protected Projectile(final EntityType<? extends Projectile> type, final Level level) {
          super(type, level);
-@@ -51,12 +_,25 @@
- 
-     protected void setOwner(final @Nullable EntityReference<Entity> owner) {
-         this.owner = owner;
-+        this.refreshProjectileSource(false); // Paper
-     }
- 
-     public void setOwner(final @Nullable Entity owner) {
-         this.setOwner(EntityReference.of(owner));
-     }
- 
-+    // Paper start - Refresh ProjectileSource for projectiles
-+    public void refreshProjectileSource(boolean fillCache) {
-+        if (fillCache) {
-+            this.getOwner();
-+        }
-+        Entity owner = this.getOwner();
-+        if (owner != null && this.projectileSource == null && owner.getBukkitEntity() instanceof org.bukkit.projectiles.ProjectileSource projSource) {
-+            this.projectileSource = projSource;
-+        }
-+    }
-+    // Paper end - Refresh ProjectileSource for projectiles
-+
-     @Override
-     public @Nullable Entity getOwner() {
-         return EntityReference.getEntity(this.owner, this.level());
 @@ -83,6 +_,7 @@
      @Override
      protected void readAdditionalSaveData(final ValueInput input) {

paper-server/src/main/java/org/bukkit/craftbukkit/entity/AbstractProjectile.java

@@ -63,7 +63,14 @@ public void hitEntity(org.bukkit.entity.Entity entity, org.bukkit.util.Vector ve
 
     @Override
     public final org.bukkit.projectiles.ProjectileSource getShooter() {
-        this.getHandle().refreshProjectileSource(true); // Paper - Refresh ProjectileSource for projectiles
+        net.minecraft.world.entity.projectile.Projectile handle = this.getHandle();
+
+        // Refresh the source if unset
+        Entity owner = handle.getOwner();
+        if (owner != null && handle.projectileSource == null && owner.getBukkitEntity() instanceof org.bukkit.projectiles.ProjectileSource projSource) {
+            handle.projectileSource = projSource;
+        }
+
         return this.getHandle().projectileSource;
     }