63 lines
1.8 KiB
GDScript
63 lines
1.8 KiB
GDScript
extends Button
|
|
# This script shows how to save data using the JSON file format.
|
|
# JSON is a widely used file format, but not all Godot types can be
|
|
# stored natively. For example, integers get converted into doubles,
|
|
# and to store Vector2 and other non-JSON types you need `var2str()`.
|
|
|
|
# The root game node (so we can get and instance enemies).
|
|
export(NodePath) var game_node
|
|
# The player node (so we can set/get its health and position).
|
|
export(NodePath) var player_node
|
|
|
|
const SAVE_PATH = "user://save_json.json"
|
|
|
|
|
|
func save_game():
|
|
var file = File.new()
|
|
file.open(SAVE_PATH, File.WRITE)
|
|
|
|
var player = get_node(player_node)
|
|
# JSON doesn't support complex types such as Vector2.
|
|
# `var2str()` can be used to convert any Variant to a String.
|
|
var save_dict = {
|
|
player = {
|
|
position = var2str(player.position),
|
|
health = var2str(player.health),
|
|
},
|
|
enemies = []
|
|
}
|
|
|
|
for enemy in get_tree().get_nodes_in_group("enemy"):
|
|
save_dict.enemies.push_back({
|
|
position = var2str(enemy.position),
|
|
})
|
|
|
|
file.store_line(to_json(save_dict))
|
|
|
|
get_node("../LoadJSON").disabled = false
|
|
|
|
|
|
# `load()` is reserved.
|
|
func load_game():
|
|
var file = File.new()
|
|
file.open(SAVE_PATH, File.READ)
|
|
var save_dict = parse_json(file.get_line())
|
|
|
|
var player = get_node(player_node)
|
|
# JSON doesn't support complex types such as Vector2.
|
|
# `str2var()` can be used to convert a String to the corresponding Variant.
|
|
player.position = str2var(save_dict.player.position)
|
|
player.health = str2var(save_dict.player.health)
|
|
|
|
# Remove existing enemies and add new ones.
|
|
for enemy in get_tree().get_nodes_in_group("enemy"):
|
|
enemy.queue_free()
|
|
|
|
# Ensure the node structure is the same when loading.
|
|
var game = get_node(game_node)
|
|
|
|
for enemy_config in save_dict.enemies:
|
|
var enemy = preload("res://enemy.tscn").instance()
|
|
enemy.position = str2var(enemy_config.position)
|
|
game.add_child(enemy)
|