## PlayerPrefs.json example
"""
{
	"i":{
		"useMusic":1,
		"hyperCam":0
	},
	"f":{
		"camDist":3.422428
	},
	"s":{
		"playerName":"MarsRacer"
	}
}
"""

class_name PlayerPrefs;
extends Object;

const _prefs_path : String = "user://PlayerPrefs.json";

static var _prefs_loaded : bool = false;

static var _int_prefs : Dictionary = {};
static var _float_prefs : Dictionary = {};
static var _string_prefs : Dictionary = {};

static func _load_prefs():
	_prefs_loaded = true;
	
	var jsonfile : FileAccess = FileAccess.open(_prefs_path, FileAccess.READ);
	if jsonfile == null: return;
	
	var jsontxt : String = jsonfile.get_as_text(true);
	var json : Variant = JSON.parse_string(jsontxt);
	
	if json == null || \
		typeof(json) != TYPE_DICTIONARY:
		
		return;
	
	var jdict : Dictionary = json;
	if jdict.has("i") && typeof(jdict["i"]) == TYPE_DICTIONARY:
		_int_prefs = jdict["i"];
	if jdict.has("f") && typeof(jdict["f"]) == TYPE_DICTIONARY:
		_float_prefs = jdict["f"];
	if jdict.has("s") && typeof(jdict["s"]) == TYPE_DICTIONARY:
		_string_prefs = jdict["s"];

static func _save_prefs():
	var json : Dictionary = {};
	json["i"] = _int_prefs;
	json["f"] = _float_prefs;
	json["s"] = _string_prefs;
	
	var jsonfile = FileAccess.open(_prefs_path, FileAccess.WRITE);
	if jsonfile == null:
		push_error("Failed to open/create \"" + _prefs_path + "\" for writing!");
		return;
	
	if !jsonfile.store_string(JSON.stringify(json)):
		push_error("Failed to write PlayerPrefs to \"" + _prefs_path + "\"!");

static func GetInt(key : String, default_value : int) -> int:
	if !_prefs_loaded:
		_load_prefs();
	
	if _int_prefs.has(key) && (_int_prefs[key] as int) != null:
		return _int_prefs[key];
	else:
		return default_value;

static func SetInt(key: String, value: int) -> void:
	if !_prefs_loaded:
		_load_prefs();
	
	if _int_prefs.has(key) and (_int_prefs[key] as int) == value:
		return
	
	_int_prefs[key] = value;
	_save_prefs();

static func GetFloat(key : String, default_value : float) -> float:
	if !_prefs_loaded:
		_load_prefs();
	
	if _float_prefs.has(key) && (_float_prefs[key] as float) != null:
		return _float_prefs[key];
	else:
		return default_value;

static func SetFloat(key: String, value: float) -> void:
	if !_prefs_loaded:
		_load_prefs();
	
	if _float_prefs.has(key) and (_float_prefs[key] as float) == value:
		return
	
	_float_prefs[key] = value;
	_save_prefs();

static func GetString(key : String, default_value : String) -> String:
	if !_prefs_loaded:
		_load_prefs();
	
	if _string_prefs.has(key) && (_string_prefs[key] as String) != null:
		return _string_prefs[key];
	else:
		return default_value;

static func SetString(key: String, value: String) -> void:
	if !_prefs_loaded:
		_load_prefs();
	
	if _string_prefs.has(key) and (_string_prefs[key] as String) == value:
		return
	
	_string_prefs[key] = value;
	_save_prefs();