Major collision detection improvements, more file organization, and added key interactable

Enemies/Glowing Ghost.gd

@@ -9,20 +9,20 @@ var velocity: Vector2 = Vector2.ZERO
 func _physics_process(_delta: float) -> void:
     velocity = Vector2.ZERO
 
-    if player:
+    if player and position.distance_to(player.position) > 1:
         velocity = position.direction_to(player.position).normalized() * SPEED
 
     velocity = move_and_slide(velocity)
     return
 
 
-func _on_player_detector_area_entered(area: Area2D) -> void:
-    if area.get_parent().name == 'Player':
-        player = area.get_parent()
+func _on_player_detector_body_entered(body: Node) -> void:
+    if 'player' in body.get_groups():
+        player = body
     return
 
 
-func _on_player_detector_area_exited(area: Area2D):
-    if area.get_parent().name == 'Player':
+func _on_player_detector_body_exited(body: Node) -> void:
+    if 'player' in body.get_groups():
         player = null
     return