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Attention | Topic was automatically imported from the old Question2Answer platform. |
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Asked By | Freya |
I noticed that if a new node with physics is created, it will only detect collisions after couple of moments. In my current project for example I want to randomly generate forests and therefore I spawn a tree, which then checks wether or not it is overlapping with other trees. But even if it is overlapping it wont detect that, unless I let the node yield for about 0.1 seconds and check afterwards. That is quite a bother since many trees have to be spawned and waiting for each and every one of them takes a couple of minutes. Is there a way to change the need to wait or reduce the required time? Or maybe a workaround without using physics?
how do you check if objects collide? code snippet?
volzhs | 2018-02-07 14:28
I use the get_overlapping_bodies() function of an Area2d, which is a child of the said tree. It returns an empty Array if I don’t let it wait.
My scene tree is a StaticBody2D with a CollisionShape2D, a Sprite and an Area2D with its own collisionshape
This is the code for the tree:
extends StaticBody2D
func _ready():
pass
func check_kill():
var timer=Timer.new()
timer.set_wait_time(0.1)
timer.set_one_shot(true)
add_child(timer)
timer.start()
yield(timer, "timeout")
timer.queue_free()
var area=get_node("Area2D")
var bodies=area.get_overlapping_bodies()
if(!bodies.empty()):
if(!bodies==[self]):
queue_free()
area.queue_free()
Freya | 2018-02-07 15:17
(the underscrores from my code got messed up but I hope it should dtill be readable. Couldnt figure out how to paste more than one line into the code sample)
Freya | 2018-02-07 15:19
Area2D has signal for collistion
- Godot 3.0 -
body_entered - Godot 2.x -
body_enter
you’d better connect this signal to Area2D to check collision.
don’t need to wait specific time.
func _ready():
area.connect("body_entered", self, "on_body_entered")
func on_body_entered(body):
# check which body collided
volzhs | 2018-02-07 15:27
It worked, thanks!
How can I mark this question as answered though, since this has been a comment?
Freya | 2018-02-07 16:36