Added door closing. Fixed death in the air

game/doors/closed_door.gd

@@ -2,17 +2,26 @@ class_name ClosedDoor
 extends Door
 
 
+var _unlocked := false
+
+
 func _is_key(_node: Node) -> bool:
 	return false
 
 
 func _can_open(body: Node2D) -> bool:
+	if _unlocked: return true
 	if not body.has_node("Pickups"): return false
 	if not body.has_method("remove_pickup"): return false
 	
 	for pickup in body.get_node("Pickups").get_children():
 		if _is_key(pickup):
 			body.remove_pickup(pickup)
+			_unlocked = true
 			return true
 	
 	return false
+
+
+func _can_close(_body: Node2D) -> bool:
+	return _unlocked