70 lines
2.4 KiB
GDScript
70 lines
2.4 KiB
GDScript
extends Node
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# save_game.gd - Responsible for saving and loading the game using a SaveData resource
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const SAVE_GAME_PATH := "user://savegame.save"
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const VERSION: int = 1
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func save() -> void:
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var save_file = FileAccess.open(SAVE_GAME_PATH, FileAccess.WRITE)
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# Save the meta data like save game version and timestamps
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var meta_data = {
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"meta": {
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"version" : VERSION,
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"timestamp" : Time.get_datetime_string_from_system()
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}
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}
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var meta_json_string = JSON.stringify(meta_data)
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save_file.store_line(meta_json_string)
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# Save the player node's position
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var player = get_tree().get_root().find_child("Player", true, false)
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var player_node_data = player.save()
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var player_json = JSON.stringify(player_node_data)
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save_file.store_line(player_json)
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# Save all other stuff from the SaveData
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var save_data = SaveData.call("save")
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var json_string = JSON.stringify(save_data)
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save_file.store_line(json_string)
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func load() -> void:
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if not FileAccess.file_exists(SAVE_GAME_PATH):
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print("No save file exists.")
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return
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# NEXT STEP: How to load correctly and in which order?
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# first the current world, then the player and their position and then the inventory?
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# Load the save file line by line and process the dictionary to restore
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# the object it represents
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var save_file = FileAccess.open(SAVE_GAME_PATH, FileAccess.READ)
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while save_file.get_position() < save_file.get_length():
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var json_string = save_file.get_line()
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# Creates the helper class to interact with JSON
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var json = JSON.new()
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# Check if there is any error while parsing the JSON string, skip in case of failure
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var parse_result = json.parse(json_string)
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if not parse_result == OK:
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print("JSON Parse Error: ", json.get_error_message(), " in ", json_string, " at line", json.get_error_line())
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continue
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# Get the data from the JSON object
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var node_data = json.get_data()
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if node_data.has("meta"):
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print("Meta data ignored.")
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# handle the player data (name, money, etc.)
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if node_data.has("player_data"):
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var world_to_load = load(node_data["player_data"].world)
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var instance = world_to_load.instantiate()
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instance.add_child(load("res://scenes/player/player.tscn").instantiate())
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var level_container = get_tree().get_root().find_child("CurrentLevel", true, false)
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level_container.add_child(instance)
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func savegame_exists() -> bool:
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return FileAccess.file_exists(SAVE_GAME_PATH)
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