Invalid call to function 'get_var' in base '_File'. Expected 0 arguments.

Question

I'm writing a load and save singleton and I'm getting this error:

Invalid call to function 'getvar' in base 'File'. Expected 0 arguments.

Here is the code:

extends Node

# This class loads, save and applies player's game data

var STATE = {
    "PLAYER_NAME": "Player",
    "PLAYER_LEVEL": 1,
    "PLAYER_XP": 0,
    "MAP": "Forest"
    }

var FilePath = "user://game_state.dat"

var Key = "99876827" # encryptation key

func _ready():
    var file = File.new()
    if file.file_exists(FilePath):
        _loadState()
    else:
        _createState()

func _loadState():
    var file = File.new()
    file.open_encrypted_with_pass(FilePath, File.READ, Key)

    STATE.PLAYER_NAME = file.get_var("PLAYER_NAME")
    print(STATE.PLAYER_NAME)
    STATE.PLAYER_XP = file.get_var("PLAYER_XP")
    STATE.MAP = file.get_var("MAP")
    file.close()

func _createState():
    var file = File.new()
    file.open_encrypted_with_pass(FilePath, File.WRITE, Key)

    file.store_string(STATE.PLAYER_NAME)
    file.store_real(STATE.PLAYER_LEVEL)
    file.store_real(STATE.PLAYER_XP)
    file.store_string(STATE.MAP)

    file.close()

func _deleteState():
    var dir = Directory.new()
    var file = File.new()
    if file.file_exists(FilePath):
        dir.remove(FilePath)
        print("State file deleted")
    else:
        print("The state file does not exist")

Answer 1

Hi,
That error means that you must not pass any arguments to functin get_var. As the docs says, get_var returns the next Variant value from file. You cannot specify a parameter to tell the function what you want, it will just return the next.