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# how to simulate a class property that can be asigned only the first time, like a 'final' property in java or a 'readonly' property in C#

#class_name ReadOnly
extends Node

# READONLY NON OBJECT WITH SPECIFIC TYPE
var readonly_int:int:
	set(p):
		if readonly_int != 0:printerr('cannot set readonly property "readonly_int" a second time'); return
		readonly_int = p

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extends Node

func pack(p:Node)->PackedScene: var v = PackedScene.new(); v.pack(p); return v

class A extends Node:
	@export var m: String = "a"
	static func instantiate(p:PackedScene):
		var v: A = p.instantiate()
		v._post_init()
		return v

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extends Node

var info: Array = []

func _ready() -> void:
	add_child_test('Node')
	for i in ClassDB.get_inheriters_from_class('Node'):
		if not ClassDB.can_instantiate(i): continue
		add_child_test(i)
	info.sort_custom(func(l, r): return l.time < r.time)

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extends Node


func _notification(what: int) -> void:
	if what == Object.NOTIFICATION_PREDELETE:
		# post_delete is a static method, thus it can be called deferredly even by dying objects. Beware that an object can be "saved" from a queue_free call by calling cancel_free, but a free call (instead of queue_free) should kill it imediatly without chance for survival
		post_delete.call_deferred(get_instance_id(), get_path())


static func post_delete(id: int, path: NodePath) -> void:

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[gd_resource type="Theme" load_steps=3 format=3 uid="uid://ddcimt5j11lgc"]

[sub_resource type="Image" id="Image_8ojfe"]
data = {
"data": PackedByteArray(0, 0, 0, 0),
"format": "RGBA8",
"height": 1,
"mipmaps": false,
"width": 1
}

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RESUMINHO SIMPLES SOBRE ESTRUTURAS DE DADOS

- Em programação existem "dados simples":
	- numeros inteiros: -1, 0, 1, etc.
	- numeros reais: -1.5, 0.1, 9.9, etc
	- valores booleanos: verdadeiro ou falso, que no fim das contas eh um inteiro onde 0 significa falso e qualquer outra coisa eh verdadeiro
	- strings (texto): apenas uma sequencia de caracteres, os quais por sua vez sao inteiros
- E existem "dados compostos", que sao criados pelo programador para agrupar dados simples de forma a representar coisas mais complexas. Ex.: para representar uma pessoa podemos criar um dado composto com 2 membros (campos): idade (int) e nome (string)
- Tanto dados simples e compostos podem ser agrupados de forma homogenea em arrays (vetores), que são meramente o agrupamento linear contíguo de N dados daquele mesmo tipo

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class_name Utils
static func file_exists_(prespath:String, pforceexactmatch:bool=false)->bool:
	if prespath.begins_with('res://') and not pforceexactmatch:
		return FileAccess.file_exists(prespath) or FileAccess.file_exists(prespath+'.remap') or FileAccess.file_exists(prespath+'.import')
	else:
		return FileAccess.file_exists(prespath)

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# as of godot 4.1
_static_init
_init
_notification 20 Node.NOTIFICATION_SCENE_INSTANTIATED # only on instantiated scene roots
_notification 18 Node.NOTIFICATION_PARENTED
_enter_tree
tree_entered signal
_notification 27 Node.NOTIFICATION_POST_ENTER_TREE
_ready
ready signal

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[gd_resource type="Theme" load_steps=3 format=2]

[sub_resource type="Image" id=3]
data = {
"data": PackedByteArray( 0, 0, 0, 0 ),
"format": "RGBA8",
"height": 1,
"mipmaps": false,
"width": 1
}

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# ScriptTester.tscn
# ScriptTester.gd
@tool
extends Node
@export var mtool_do_test_scripts:bool:
	get: return false
	set(p):
		mtool_do_test_scripts = false
		if p: tool_do_test_scripts()
func _ready():