I think that only one Input.is_action_just_pressed() can be true.
What exactly is your cheat code? Pressing multiple keys in a sequence?
How would I add a cheat code to a title screen
You need to check input in _input or _unhandled_input.
https://docs.godotengine.org/en/stable/tutorials/inputs/inputevent.html
And the way you wrote it, you check if ALL is pressed at once.
No I wanted it to check if the inputs are pressed one by one
Raptorkillz You should at least work through introductory tutorials in Godot docs before attempting anything else, to get some basic understanding of how things work.
xyz Okay but in the code there's this line
var cheatCodes = {
"gm_up gm_up gm_down gm_down gm_up gm_up gm_up gm_up": "konami"
}
Raptorkillz that is no konami master code. konami master code was 
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Raptorkillz Okay but in the code there's this line
Yeah, but there are other lines as well 
Here's an automatic class that listens to action sequences, and when it finds something, it notifies about that via a signal:
class_name CheatCodeListener extends Node
signal code_entered(name)
var s: String
var cheats = {"ui_up ui_down ui_up" : "some cheat", "ui_left ui_right" : "some other cheat"}
func _input(e):
for a in InputMap.get_actions().filter(func(aa): return e.is_action_pressed(aa)).slice(0,1):
s += a if not s else " " + a
for k in cheats.keys(): if s.contains(k): code_entered.emit(cheats[k]); s = ""Now the only thing left to do is to make a game to cheat at. Easy peasy 
xyz Okay but how would I make it play a sound
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Raptorkillz Okay but how would I make it play a sound
print(String.chr(0x07)). But you'll need to start a console version of Godot for this to work.
xyz I am on mobile
Raptorkillz Well then you play it the same way you play the music. You already have that in the code you posted in one of your questions.
Konami cheat in a SEGA game? Is this allowed? 
xyz Okay but now when I press a button is pressed it plays the sound but I want it to play the sound when the cheat is successfully entered
- Edited
xyz Can you make it work with a resource similar to this https://github.com/Hugo4IT/CheatCoder
- Edited
Raptorkillz That addon works with keys, not with actions.
I wrote you the complete thing. Just connect the signal and do whatever you want (play sound etc...) in the signal handling function. If you don't understand what I'm talking about, you really need to go through the introductory tutorial I mentioned earlier.
konami code is not patented, thankfully..
- Edited
xyz Now its not playing a sound
class_name CheatCodeListener extends Node
signal code_entered(name)
var s: String
var cheats = {"gm_up gm_up gm_down gm_down gm_up gm_up gm_up gm_up" : "sonic 3 level select"}
func _input(e):
for a in InputMap.get_actions().filter(func(aa): return e.is_action_pressed(aa)).slice(0,1):
s += a if not s else " " + a
for k in cheats.keys(): if s.contains(k): code_entered.emit(cheats[k]); s = ""
code_entered.connect(Play_sound)
func Play_sound():
Global.debug =1
$"../Node2D/AudioStreamPlayer2".play()```