File Access

Read from File

Create a script that will be Autoloaded called data_characters.gd:

extends Node

const DATA_CHARACTERS = "res://data/character/db_characters.json"
var _data : Dictionary

func _ready():
    self._load_characters_data()


ffunc _load_characters_data():
	var _file := FileAccess.open(DATA_CHARACTERS, FileAccess.READ)
	var _json_object := JSON.new()
	
	var parse_error := _json_object.parse(_file.get_as_text())
	if parse_error != OK:
		printerr("JSON File: '", DATA_CHARACTERS, "' could not be parsed.")
		return
	
	_file = null # Close File
	self._data = _json_object.get_data()