Bug in Godot?

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:bust_in_silhouette: Asked By gruen

I tryed to do an pathfinding movement for computer-controlled citizens in my game.

my objects are all the same but diefferent instances. and if an value drops under 5 they search for an other Object to reloard that value. ( if they have to go to toilet, they will )

I worked with this code (attached below). Most of the time it works but without changing anything, sometimes the citizens jumps to an other place and stand there.
i tested it out. i startet the game and it worked. i startet it again and it worked. and i started it again and it suddenly doesnt worked.
so i think i can say 8 times out of ten it works perfektly but 2 times the instances jumpes anywhere and stay there. so i think becaus i didnt changed annything but got also two differen resoults it must be an bug in godot.

here is my code.

extends Sprite

var speed = 400.0
var path = PoolVector2Array() 

onready var nav_2d = get_node("../Navigation2D")
onready var toilet = get_node("../../Toilette")

func _ready():

func _input(_event):
	if Input.is_action_just_pressed("ui_accept"):
		var new_path = nav_2d.get_simple_path(global_position, toilet.global_position)
		path = new_path

func _process(delta):
	var move_distance = speed * delta

func move_along_path(distance):
	var start_point = position
	for i in range(path.size()):
		var distance_to_next = start_point.distance_to(path[0])
		if distance <= distance_to_next and distance > 0.0 :
			position = start_point.linear_interpolate(path[0], distance / distance_to_next)
		elif distance < 0.0:
			position = path[0]
		distance -= distance_to_next
		start_point = path[0]

func set_path(value):
	if value.size() == 0:

Having a shot in the dark: does it change anything if you insert this in _ready:

path = PoolVector2Array()


func set_path(value):
    if value.size() == 0:

Why is set_path… not setting path?

Zylann | 2019-10-14 12:57

unfortunaly it doesnt change anything

that have to be a bug because there is no logical reason for changing that behavier without anny changes on code base.

gruen | 2019-10-14 20:22