73 lines
2.4 KiB
GDScript
73 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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# List all the nodes and resouces to save
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var save_data: Resource = SaveData.new()
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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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# for now, only save the savedata resource from above
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if !save_data.has_method("save"):
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print("Resource '%s' is missing a save() function, skipped" %save_data.resource_name)
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return
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# Call the node's / resource's save function
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var node_data = save_data.call("save")
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# Serialize the JSON string
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var json_string = JSON.stringify(node_data)
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# Store the save dictionary as a new line in the save file
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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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# 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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# handle the player data (name, money, etc.)
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if node_data.has("player_data"):
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print("save_game.gd: ", node_data)
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# Firstly, we need to create the object and add it to the tree and set its position.
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#var new_object = load(node_data["filename"]).instantiate()
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#get_node(node_data["parent"]).add_child(new_object)
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#new_object.position = Vector2(node_data["pos_x"], node_data["pos_y"])
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# Now we set the remaining variables.
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#for i in node_data.keys():
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# if i == "filename" or i == "parent" or i == "pos_x" or i == "pos_y":
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# continue
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# new_object.set(i, node_data[i])
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