update

scripts/portal/portal.gd

@@ -1,4 +1,13 @@
 extends StaticBody3D
 
 func _ready() -> void:
-  add_to_group("targetable")
+  add_to_group("portals")
+  EventBus.entity_died.connect(_on_entity_died)
+
+func _on_entity_died(entity: Node) -> void:
+  if entity == self:
+    queue_free()
+
+func _on_detection_area_body_entered(body: Node3D) -> void:
+  if body is CharacterBody3D and body.name == "Player":
+    EventBus.enemy_engaged.emit(self, body)