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0343cedd48
* General proofreading for grammar and spelling * General formatting * Addition of appropriate literals where appropriate, i.e. `&"foo"` for `StringName` cases and `^"foo/bar"` for `NodePath` cases
63 lines
2.1 KiB
GDScript
63 lines
2.1 KiB
GDScript
extends Button
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# This script shows how to save data using the JSON file format.
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# JSON is a widely used file format, but not all Godot types can be
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# stored natively. For example, integers get converted into doubles,
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# and to store Vector2 and other non-JSON types you need to convert
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# them, such as to a String using var_to_str.
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## The root game node (so we can get and instance enemies).
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@export var game_node: NodePath
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## The player node (so we can set/get its health and position).
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@export var player_node: NodePath
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const SAVE_PATH = "user://save_json.json"
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func save_game() -> void:
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var file := FileAccess.open(SAVE_PATH, FileAccess.WRITE)
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var player := get_node(player_node)
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# JSON doesn't support many of Godot's types such as Vector2.
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# var_to_str can be used to convert any Variant to a String.
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var save_dict := {
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player = {
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position = var_to_str(player.position),
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health = var_to_str(player.health),
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rotation = var_to_str(player.sprite.rotation),
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},
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enemies = [],
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}
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for enemy in get_tree().get_nodes_in_group(&"enemy"):
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save_dict.enemies.push_back({
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position = var_to_str(enemy.position),
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})
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file.store_line(JSON.stringify(save_dict))
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get_node(^"../LoadJSON").disabled = false
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func load_game() -> void:
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var file := FileAccess.open(SAVE_PATH, FileAccess.READ)
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var json := JSON.new()
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json.parse(file.get_line())
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var save_dict := json.get_data() as Dictionary
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var player := get_node(player_node) as Player
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# JSON doesn't support many of Godot's types such as Vector2.
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# str_to_var can be used to convert a String to the corresponding Variant.
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player.position = str_to_var(save_dict.player.position)
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player.health = str_to_var(save_dict.player.health)
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player.sprite.rotation = str_to_var(save_dict.player.rotation)
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# Remove existing enemies before adding new ones.
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get_tree().call_group(&"enemy", &"queue_free")
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# Ensure the node structure is the same when loading.
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var game := get_node(game_node)
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for enemy_config: Dictionary in save_dict.enemies:
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var enemy: Enemy = preload("res://enemy.tscn").instantiate()
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enemy.position = str_to_var(enemy_config.position)
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game.add_child(enemy)
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