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Attention | Topic was automatically imported from the old Question2Answer platform. |
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Asked By | Eclair |
When Area2D in the array was destroyed, [Deleted Object] was displayed.
I want to detect it with code.
I compare it with null in line 5, but it did not work.
How can I detect [Deleted Object] in the array?
var enemies = []
func _process(delta):
print(enemies) # [[Area2D:1445], [Deleted Object], [Area2D:1453]]
for i in enemies.size():
if enemies[i] == null: # not working........
print("empty")
func _on_Player_area_entered(area):
enemies.append(area) # append Area2D
How is this Area deleted? Normally it shouldn’t be deleted unless all references (including reference in the array) are gone.
So if an Object is deleted with queue_free() the object should give true for is_queued_for_deletion() until the array entry is overwritten or deleted.
Anyway, you could try testing with enemies[i] is null because null is supposed to be a special type in GDScript.
Or: Delete the array entry in enemies at the moment you’re deleting the Area. (All indices will change)
Or: Use a hash instead of an array. That way you can directly remove the hash entry on deleting the area. You would have to keep a counter though.
wombatstampede | 2019-02-10 11:56
Thank you for your reply, wombatstampede !
Player (Area2D) has an enemies array. (above code)
There is PlayerBullet (Area2D) which is a class different from Player.
When PlayerBullet hits the enemy, it automatically deletes the enemy.
queue_free() is executed using area_entered signal.
func _on_PlayerBullet_area_entered(area):
area.queue_free()
I want to detect and delete those destroyed in the enemies array.
It was not detected by null.
So, I am trying this now. → https://forum.godotengine.org/2773/detect-if-an-object-reference-is-freed
Eclair | 2019-02-10 12:59