How do i create a login Screen

TheRedPandaKing

DaveTheCoder
The reason i am creating this is for a school submission, that is why i am looking to only have the message pop up after they come into a restriction.
The exact way you are explaining in 2. looks great the only problem is how do i learn or code it, as i said i am new to coding but i don't mind learning if their is a beginner friendly video which has all of this information that would be great since i have already looked on how to do this but i cant find a concrete tutorial on checking it with RegEx. If you could show me how that would be great.

DaveTheCoder

I can provide an example of using a RegEx for that.

Which special characters do you want to exclude?

TheRedPandaKing

DaveTheCoder
I somewhat under stand RegEx at this point in time, i want to under stand how to check i variable for things like if it has words inside that are apart of the RegEx. if i were to use a RegEx i would use "[A-Z0-9a-z]+@[A-Z0-9a-z]+.com" for the email and "[A-Z] for the password and "\w".
But i don't know how make a If statement that checks one of these variables at the same time as checking for no input or other things?

DaveTheCoder

Here's an example:

var username_regex: RegEx

func _ready() -> void:
	# Compile RegEx pattern for parsing username input.
	username_regex = RegEx.new()
	var regex_err: Error = username_regex.compile("\\s")
	assert(regex_err == OK)

func some_other_function(username_input: String) -> void:
	# Check if username input contains whitespace.
	var regex_match: RegExMatch = username_regex.search(username_input)
	if regex_match != null:
		print_debug("username contains whitespace")
	else:
		print_debug("username does not contain whitespace")

Ask if you need an explanation for the "\\s".

TheRedPandaKing

DaveTheCoder
I more want an explanation on the code ingeneral like what are the (asserts) and why is it (... == OK) and is RegExMatch used to search the var? im kinda lost with that. and what is (Error: )

DaveTheCoder

https://docs.godotengine.org/en/4.3/tutorials/scripting/gdscript/gdscript_basics.html#assert-keyword

Error is an enum type that's returned by many methods, including RegEx.compile. OK is the Error value that means that no error occurred.

RegExMatch is the type returned by RegEx.search. RegEx.search returns null if the pattern is not matched.

Since that code is only concerned with a match/no-match condition, it doesn't need to use any of RegExMatch's properties or methods, but only to check whether it's null.

I always use static typing in GDScript. It catches mistakes earlier, and makes the code more readable and more reliable.

TheRedPandaKing

DaveTheCoder

extends Control

var username_input:String = ""

func _ready() -> void:
	
	var username_regex = RegEx.new()
	var regex_err: Error = username_regex.compile("\\s")
	assert(regex_err == OK)

func _process(delta):
	pass
	


func _on_create_button_button_down(username_input) -> void:
	print("button down")
	username_input = $UsernameInput.text
	
	var regex_match: RegExMatch = username_regex.search(username_input)
	if regex_match != null:	
		print_debug("username has white sapce")
	else:
		print_debug("username does noit have white space")
		


func _on_create_button_pressed():
	print("button works")

I wanted to try and understand it so did this, but it says, username_regex not declared in current scope why is that
Whats print_debug and why not use Print is it due to you using assert?

DaveTheCoder

print_debug provides more information than print. It tells you its location, which makes it easier to remove it later.

TheRedPandaKing username_regex not declared in current scope

Compare your code with the code I posted.

TheRedPandaKing

DaveTheCoder
Mb was blind but now it's saying (cannot call method 'search' on a null value)

DaveTheCoder

Compare them again.

TheRedPandaKing

DaveTheCoder
Damm thanks, i May need help laiter down the line tho i hope not but this will help me greatly 🙂

TheRedPandaKing

DaveTheCoder

extends Control

@onready var ULT = $UsernameInput/UsernameLengthTag
@onready var UCT = $UsernameInput/UsernameCharactersTag
@onready var UNIT = $UsernameInput/UsernameNoInputTag

var username_regex1: RegEx
var username_input:String = ""

var username_check1 = false
var username_check2 = false
var finalusername:String = ""

func _ready() -> void:
	UCT.hide()
	UNIT.hide()
	ULT.hide()

	username_regex1 = RegEx.new() #Username Regex that does white space
	var regex_err: Error = username_regex1.compile("[^A-Z0-9a-z]") #since this Goes off a opposite check i make it only look for everything that is a letter and number
	assert(regex_err == OK) #no idea
	

func _process(delta):
	pass

func _on_create_button_button_down(username_input) -> void:
	pass

func _on_create_button_pressed():
	
	username_input = $UsernameInput.text #converts the present text inside the UsernameInput into a varible to then check laiter
	
	var regex_match: RegExMatch = username_regex1.search(username_input) #searchs the usernam_input which is taken from the text inside the Lineedit
	if regex_match != null: #no idea
		print_debug("username has either spaces or Special characters")
		UCT.show() 
		username_check1 = false
	else:
		print_debug("Username only has letters and numbers")
		UCT.hide()
		username_check1 = true
	
	if username_input == "":
		print_debug("No input inside the username") #checks for no input
		UNIT.show()
		username_check2 = false
	else:
		print_debug("username has a input")
		UNIT.hide()
		username_check2 = true
	
	
	if username_check1 || username_check2 == true :
		username_input = finalusername # this should see if all the checks are true and if to do this
		print(finalusername)
	else:
		print("this works?")


func _on_username_input_text_changed(new_text):
	
	if new_text.length() >= 12: #see's if the current text inside the UsernameInput is longer or equal to 12
		print("Username is Cant be longer then 12 Characters")
		ULT.show() 
	elif new_text.length() <= 12:
		ULT.hide()
		print("Username is not long")

why is my if username_check1 || username_check2 == true: not working at all, im trying to check if all the statements im checking for are not true and setting a variable to true or not true to then set the username_input into the final_username

DaveTheCoder

TheRedPandaKing if username_check1 || username_check2 == true:

Should be:
if username_check1 and username_check2:

TheRedPandaKing if new_text.length() >= 12:

Should be:
if new_text.length() > 12:

TheRedPandaKing elif new_text.length() <= 12:

That's valid, but this is equivalent (since you know that new_text.length() is not > 12):
else:

TheRedPandaKing

DaveTheCoder
Thx 🙂

TheRedPandaKing

DaveTheCoder
Welp, im trying to save my username, password and email then use them on another scene how do i do this rn im trying,

             func save_game()
		var save_file = FileAccess.open("user://save.data", FileAccess.READ)
		if save_file != null:
			saved_username = save_file.get_as_text(currentusername)
			saved_email = save_file.get_as_text(currentemail)
			saved_password = save_file.get_as_texg(currentpassword)
		else:
			print("no data")
			
		save_game()
		
		print(saved_username)
		print(saved_email)
		print(saved_password)

func save_game():
	var save_file = FileAccess.open("user://save.data", FileAccess.WRITE)
	save_file. store_pascal_string(currentemail)
	save_file. store_pascal_string(currentemail)
	save_file. store_pascal_string(currentpassword)

but it says "Invaild argument for "get_as_text" function argument shoulb be "bool" but is "string"" and i don't now the length of the text so i can't use get_buffer.....

xyz

TheRedPandaKing This thread is getting psychoactive. Is your homework deadline nearing? 🙂

TheRedPandaKing

xyz
I just never knew from the start what exactly was the best way, which is kind of why it went into "chaos" at least it was all talking bout aLine Edit and how to use inputs from them.

TheRedPandaKing
but still should get_as_text be working?

TheRedPandaKing

xyz
maybe or maybe not. im trying to not ask for to much help so i always do some research but im not very smart. should i start i new thread for other types of help?

xyz

TheRedPandaKing should i start i new thread for other types of help?

Probably yes.
You should also mark the post that was most helpful to you as the best answer.

TheRedPandaKing

xyz
Ight, ive changed the name so it's less chaos, but ill keep that in mind

xyz

TheRedPandaKing Broadening the question is often not a good idea. You'll much more likely get useful responses if you do the opposite. Separate into sub-problems and narrow each down as much as possible. Divide and conquer! That approach will also help you with learning. Digest small chunks, one at a time.

Tomcat

TheRedPandaKing Ight, ive changed the name so it's less chaos, but ill keep that in mind

Best of all, it's:

Return the original title of the topic.
Select “Best Answer”.
Start a new topic with a new question.

xyz Divide and conquer!

I suspected that deep down inside, you are a politician. 😹

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