PackedScene Troubles:

[just_a_indie_dev]

Godot Version

Godot 4.4

Question

Packedscene won't register as packedscene when trying to check for new dictionary key:

I’m trying to make a dictionary that holds different packedscenes of bullets I’ve made for a main project I’m working on.

Issue:

the problem is that when I’m using the built in function I made (add_to_bullet_dictionary(key_name:String, _preload:PackedScene))

for some reason the packedscene I’m trying to add doesn’t register as one in the code, but shows in a error print i made as a packed scene:

Code below:

extends Node
class_name bullet_container

var global_dict: Dictionary = {}

extends CharacterBody2D
class_name bullet_logic




@export_group("physics")
@export var speed:int
@export var damage_over_time:int
@export var raw_damage: int




func _physics_process(_delta: float) -> void:
	move_and_slide()


func add_to_bullet_dictionary(key_name:String, _preload:PackedScene):
	if _preload != PackedScene:
		
		push_error("preload is not a packscene but is: ", _preload)
		
	if  _preload == null:
		push_error("_preload is null")
	
	# adds key to dictionary when _preload is a packscene and key_name is not found in dict:

	if not BulleftDict.global_dict.has(key_name) and _preload == PackedScene:
		BulleftDict[key_name] = _preload

extends bullet_logic

var bullet_name = "purple bullet"
@onready var _preload:PackedScene
func _ready() -> void:
	_preload = preload("res://Scene's/Bullets/purple_bullet.tscn")
	
	add_to_bullet_dictionary(bullet_name, _preload)
	print(BulleftDict.global_dict)


func _on_area_2d_mouse_entered() -> void:
	
	queue_free()
	print("mouse is in box")

[constanze3]

With != you are comparing between instances, to type check you should use is not instead i.e. _preload is not PackedScene.

[just_a_indie_dev]

I’ll try this and see if there’s a different outcome, I appreciate the input.

[just_a_indie_dev]

So I tweaked the code and now I’m getting an old error that pop-up before I started checking to see if the node was a packed scene. And that’s the invalid assignment to property error.

I know that it occurs when the type you’re trying to put through is wrong, but everything points to the item still being a packedscene so it’s somewhat confusing.

Code below:

extends CharacterBody2D
class_name bullet_logic




@export_group("physics")
@export var speed:int
@export var damage_over_time:int
@export var raw_damage: int




func _physics_process(_delta: float) -> void:
	move_and_slide()


func add_to_bullet_dictionary(key_name:String, _preload:PackedScene):
	if _preload is not PackedScene:
		
		push_error("preload is not a packscene but is: ", _preload)
		
	if  _preload == null:
		push_error("_preload is null")
	
	if not BulleftDict.global_dict.has(key_name) and _preload is PackedScene:
		BulleftDict[key_name] = _preload

extends bullet_logic

var bullet_name = "purple bullet"
@onready var _preload:PackedScene

func _ready() -> void:
	_preload = load("res://Scene's/Bullets/purple_bullet.tscn")
	var _load = _preload.instantiate()
	
	add_to_bullet_dictionary(bullet_name, _preload)
	print(BulleftDict.global_dict)


func _on_area_2d_mouse_entered() -> void:
	
	queue_free()
	print("mouse is in box")

[just_a_indie_dev]

So I figured out that no matter what value BulletDict.global_dict[key_name] is supposed to equal it will show the invalid assignment error.

For example:

BulletDict.global_dict[key_name] = raw_power

This would give me the same error except instead of saying packedscene it would say int.

[just_a_indie_dev]

The problem was that I wasn’t using the built in dictionary, but the global script to try and add a key.

all I had to do was put BulletDict.global_dict instead of just BulletDict when adding the key into the dictionary.

Thank you for trying to help @constanze3 on this very simple problem lol, I hope you have a good day.