Godsim/scripts/world.gd

extends Node

var world_seed = 0;
var world_info = {
	"seed": 0,
	"name": "world"
}

func _ready():
	#new_world()
	pass

func new_world():
	world_info.seed = round(Time.get_unix_time_from_system())
	print("World seed is " + str(world_info.seed))
	print("World name is " + str(world_info.name))

func save_world():
	print("Saving world")
	var save_game = FileAccess.open("user://%s.save" % world_info.name, FileAccess.WRITE)
	
	# Saving world info
	save_game.store_line(JSON.stringify(world_info))
	
	var save_nodes = get_tree().get_nodes_in_group("Persistent")
	
	for node in save_nodes:
		# Check the node is an instanced scene so it can be instanced again during load.
		if node.scene_file_path.is_empty():
			print("persistent node '%s' is not an instanced scene, skipped" % node.name)
			continue

		# Check the node has a save function.
		if !node.has_method("save"):
			print("persistent node '%s' is missing a save() function, skipped" % node.name)
			continue

		# Call the node's save function.
		var node_data = node.call("save")
		#print(node_data)
		if (node_data == {}): continue
		# JSON provides a static method to serialized JSON string.
		var json_string = JSON.stringify(node_data)

		# Store the save dictionary as a new line in the save file.
		save_game.store_line(json_string)

func load_world(save_name):
	if not FileAccess.file_exists("user://%s.save" % save_name):
		return # Error! We don't have a save to load.

	# We need to revert the game state so we're not cloning objects
	# during loading. This will vary wildly depending on the needs of a
	# project, so take care with this step.
	# For our example, we will accomplish this by deleting saveable objects.
	var save_nodes = get_tree().get_nodes_in_group("Persistent")
	for i in save_nodes:
		i.queue_free()

	# Load the file line by line and process that dictionary to restore
	# the object it represents.
	var save_game = FileAccess.open("user://%s.save" % save_name, FileAccess.READ)
	
	var json_string_world = save_game.get_line()

	var json_world = JSON.new()

	var parse_result_world = json_world.parse(json_string_world)
	if not parse_result_world == OK:
		print("JSON Parse Error: ", json_world.get_error_message(), " in ", json_string_world, " at line ", json_world.get_error_line())
		return

	world_info = json_world.get_data()
	
	while save_game.get_position() < save_game.get_length():
		var json_string = save_game.get_line()

		# Creates the helper class to interact with JSON
		var json = JSON.new()

		# Check if there is any error while parsing the JSON string, skip in case of failure
		var parse_result = json.parse(json_string)
		if not parse_result == OK:
			print("JSON Parse Error: ", json.get_error_message(), " in ", json_string, " at line ", json.get_error_line())
			continue

		# Get the data from the JSON object
		var node_data = json.get_data()

		# Firstly, we need to create the object and add it to the tree and set its position.
		#var new_object = load(node_data["filename"]).instantiate()
		var new_object
		match node_data["node"]:
			"tile":
				new_object = load("res://scenes/models/tile.tscn").instantiate()
				#print(str(get_tree().root.get_node("world/Earth")))
				get_tree().root.get_node("world/Earth").add_child(new_object)
		
		new_object.position = Vector3(node_data["pos_x"], node_data["pos_y"], node_data["pos_z"])

		# Now we set the remaining variables.
		for i in node_data.keys():
			if i == "node" or "pos" in i:
				continue
			new_object.set(i, node_data[i])
			new_object.call("update_tile")
	get_tree().root.get_node("world/Earth").call("mark_free_tiles")