bugfix enemy spawner

levels/enemy_spawner.gd

@@ -30,11 +30,12 @@ func _process(_delta: float) -> void:
 
 	var col_mask := 16 # floor collision layer
 	var params := PhysicsRayQueryParameters3D.create(
-		v, v + Vector3.DOWN * 100., col_mask
+		v, v + Vector3.DOWN * 100., 1 # detect any level geometry
 	)
 	var raycast := get_world_3d().direct_space_state.intersect_ray(params)
 	
-	if not raycast.is_empty():
+	# if the raycast hit and the hit was the floor...
+	if not raycast.is_empty() and raycast.collider.collision_layer & col_mask:
 		var hitpos: Vector3 = raycast.position
 		
 		if points.size() < MAX_CACHED_POINTS:
@@ -45,13 +46,15 @@ func _process(_delta: float) -> void:
 			doomed_point_idx = doomed_point_idx % MAX_CACHED_POINTS
 
 func _on_timer_timeout() -> void:
-	if points.is_empty(): return
+	if points.is_empty(): 
+		push_warning("tried to spawn enemy, but can't find a point!")
+		return
 
 	var pos: Vector3 = points.pick_random()
 	pos += Vector3.UP * 0.02
 	var scene := preload("res://enemies/police_car/police_car.tscn")
 	var car: Node3D = scene.instantiate()
-	car.global_position = pos
+	car.position = pos
 	get_tree().current_scene.add_child(car)