problem with passing dictionary values

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:bust_in_silhouette: Asked By Nitsuga

I have run into a problem and wanted to know if it is a Godot error or my ignorance.

func _ready():
var path = [Vector2(0, 1), Vector2(1, 1)]
var player_path = path
player_path[0] = Vector2(32, 32)
print(player_path)
print(path)

What prints is this:
[(32, 32), (1, 1)]
[(32, 32), (1, 1)]
And what I expected it to print is this:
[(32, 32), (1, 1)]
[(0, 1), (1, 1)]

Why when I change player_path values ​​do path values ​​change?

Please choose better titles. Somthing like ‘Problem with Dictionary’

whiteshampoo | 2021-01-30 08:09

2
:bust_in_silhouette: Reply From: whiteshampoo

Solution:

var player_path = path.duplicate()

Dictionaries and Arrays are a bit tricky. You set the reference with ‘=’, not the values/data.
Very similar to Python.