rewired signals and added savemanager and resource saving

entities/player/player.gd

@@ -1,12 +1,23 @@
 extends CharacterBody3D
 
 @onready var animated_mesh = $GobotSkin
-
 var in_battle: bool = false
-
 const SPEED = 5.0
 const JUMP_VELOCITY = 4.5
 
+func on_save_game(saved_data : Array[SavedData]):
+	var data = SavedData.new()
+	data.position = global_position
+	data.scene_path = scene_file_path
+	saved_data.append(data)
+	
+func on_before_load_game():
+	get_parent().remove_child(self)
+	queue_free()
+
+func on_load_game(saved_data: SavedData):
+	global_position = saved_data.position
+
 func _physics_process(delta: float) -> void:
 	if in_battle == true:
 		return

entities/player/player.tscn

@@ -6,7 +6,7 @@
 [sub_resource type="CapsuleShape3D" id="CapsuleShape3D_xuba7"]
 height = 1.7
 
-[node name="Player" type="CharacterBody3D"]
+[node name="Player" type="CharacterBody3D" groups=["save_nodes"]]
 axis_lock_angular_x = true
 axis_lock_angular_y = true
 axis_lock_angular_z = true

game.gd

@@ -10,14 +10,17 @@ func _ready() -> void:
 	if skip_menu == true:
 		UI.show_ingame_controls(!skip_menu)
 		UI.show_main_menu(!skip_menu)
-		_on_ui_on_new_game_started()
+		start_new_game()
 		return
 		
 	# On start of the game, the main menu is shown
+	UI.connect("on_new_game_started", start_new_game)
+	UI.connect("on_game_continued", continue_game)
 	UI.show_main_menu()
 	
+	
 # this event comes from the MainMenu Node in the UI
-func _on_ui_on_new_game_started() -> void:
+func start_new_game() -> void:
 	var world = preload("res://worlds/debug_level.tscn").instantiate()
 	UI.show_ingame_controls()
 	
@@ -28,7 +31,16 @@ func _on_ui_on_new_game_started() -> void:
 	var player = preload("res://entities/player/player.tscn").instantiate()
 	world.add_child(player)
 	
+	# Give the player a monster
+	var monster = MonsterData.new()
+	monster.set_data("debuggy")
+	SaveManager.current_save.party.push_back(monster)
+	
+	# Update the UI once
+	UI.update()
+
 # event comes from the MainMenu Node in the UI
-func _on_ui_on_game_continued() -> void:
+func continue_game() -> void:
-	SaveGame.load()
+	SaveManager.load_game()
 	UI.show_ingame_controls()
+	UI.update()

game.tscn

@@ -5,6 +5,7 @@
 
 [node name="Game" type="Node3D"]
 script = ExtResource("1_mfbtr")
+skip_menu = false
 
 [node name="UI" parent="." instance=ExtResource("2_ynhuf")]
 

globals/save_game.gd

@@ -1,70 +0,0 @@
-extends Node
-# save_game.gd - Responsible for saving and loading the game using a SaveData resource
-
-const SAVE_GAME_PATH := "user://savegame.save"
-const VERSION: int = 1
-
-func save() -> void:
-	var save_file = FileAccess.open(SAVE_GAME_PATH, FileAccess.WRITE)
-	
-	# Save the meta data like save game version and timestamps
-	var meta_data = {
-		"meta": {
-			"version" : VERSION,
-			"timestamp" : Time.get_datetime_string_from_system()
-		}
-	}
-	var meta_json_string = JSON.stringify(meta_data)
-	save_file.store_line(meta_json_string)
-		
-	# Save the player node's position
-	var player = get_tree().get_root().find_child("Player", true, false)
-	var player_node_data = player.save()
-	var player_json = JSON.stringify(player_node_data)
-	save_file.store_line(player_json)
-	
-	# Save all other stuff from the SaveData
-	var save_data = SaveData.call("save")
-	var json_string = JSON.stringify(save_data)
-	save_file.store_line(json_string)
-
-func load() -> void:
-	if not FileAccess.file_exists(SAVE_GAME_PATH):
-		print("No save file exists.")
-		return
-		
-	# NEXT STEP: How to load correctly and in which order?
-	# first the current world, then the player and their position and then the inventory?
-	
-	# Load the save file line by line and process the dictionary to restore
-	# the object it represents
-	var save_file = FileAccess.open(SAVE_GAME_PATH, FileAccess.READ)
-	while save_file.get_position() < save_file.get_length():
-		var json_string = save_file.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()
-		
-		if node_data.has("meta"):
-			print("Meta data ignored.")
-
-		# handle the player data (name, money, etc.)
-		if node_data.has("player_data"):
-			var world_to_load = load(node_data["player_data"].world)
-			var instance = world_to_load.instantiate()
-			instance.add_child(load("res://scenes/player/player.tscn").instantiate())
-			var level_container = get_tree().get_root().find_child("CurrentLevel", true, false)
-			level_container.add_child(instance)
-
-
-func savegame_exists() -> bool:
-	return FileAccess.file_exists(SAVE_GAME_PATH)

project.godot

@@ -18,9 +18,8 @@ config/icon="res://assets/logo/logo.png"
 
 [autoload]
 
+SaveManager="*res://resources/save_game/save_manager.gd"
 UI="*res://ui/ui.gd"
-SaveGame="*res://globals/save_game.gd"
-SaveData="*res://resources/save_data.gd"
 
 [display]
 
@@ -35,7 +34,6 @@ window/handheld/orientation=1
 folder_colors={
 "res://assets/": "red",
 "res://entities/": "blue",
-"res://globals/": "gray",
 "res://materials/": "pink",
 "res://resources/": "yellow",
 "res://ui/": "green"
@@ -43,7 +41,7 @@ folder_colors={
 
 [global_group]
 
-Persist="Contains all nodes that need to be saved"
+save_nodes=""
 
 [input]
 

resources/save_game/save_game.gd

@@ -0,0 +1,15 @@
+class_name SavedGame
+extends Resource
+# This resource collects all data to save, from the player and other nodes
+
+# Player info to save
+@export var player_money : int = 0
+@export var party: Array[MonsterData] = []
+
+# Environment info to save (daytime, current world, weather)
+@export var world : String = ""
+@export var daytime : float = 12.0
+@export var weather : String = "this should be a global enum"
+
+# All other nodes's data is collected here
+@export var saved_data: Array[SavedData] = []

resources/save_game/save_manager.gd

@@ -0,0 +1,74 @@
+extends Node
+
+# The group of nodes to save is named "save_nodes"
+
+# Reference to the currently loaded save game
+@onready var current_save : SavedGame = SavedGame.new()
+
+var world
+
+func save_game():
+	# Create a new empty save game
+	var saved_game := SavedGame.new()
+	
+	# Save the environment data
+	saved_game.world = "res://worlds/debug_level.tscn" #SceneManager.get_world()
+	saved_game.daytime = 12.5
+	saved_game.weather = "this should be an enum"
+	
+	# Save the party data
+	for monster in SaveManager.current_save.party:
+		saved_game.party.append(monster)
+	
+	# Create an array to store the data of all other nodes
+	var saved_data : Array[SavedData] = []
+	
+	# Use a group call to collect all the data from the other objects
+	get_tree().call_group("save_nodes", "on_save_game", saved_data)
+	
+	# Store the array in the saved game
+	saved_game.saved_data = saved_data
+	
+	# Store it into a file
+	ResourceSaver.save(saved_game, "user://savegame.tres")
+	
+
+func load_game():
+	# Load the saved game file
+	var saved_game : SavedGame = load("user://savegame.tres") as SavedGame
+	
+	# Return if no save file is found
+	if saved_game == null:
+		print("No savegame found.")
+		return
+	
+	# Save a reference to the current save game
+	current_save = saved_game
+	print(saved_game.party[0].display_name)
+	
+	# Clean up all non-static objects from the scene
+	get_tree().call_group("save_nodes", "on_before_load_game")
+	
+	# Restore world data
+	# doing it via get_tree, until the SceneManager exists
+	var _world : Node = load(saved_game.world).instantiate()
+	get_node("/root/Game/CurrentLevel").add_child(_world)
+	world = _world
+	#SceneManager.set_world(saved_game.world)
+	
+	# Restore all other nodes
+	for node in saved_game.saved_data:
+		# Instantiate the scene for the node
+		var scene := load(node.scene_path) as PackedScene
+		var restored_node = scene.instantiate()
+		
+		# Add the item to the world
+		# todo: add parent as value to save
+		world.add_child(restored_node)
+		
+		# run a callback to restore the item's state
+		if restored_node.has_method("on_load_game"):
+			restored_node.on_load_game(node)
+			
+func save_exists():
+	return FileAccess.file_exists("user://savegame.tres")

resources/save_game/saved_data.gd

@@ -0,0 +1,10 @@
+class_name SavedData
+extends Resource
+# Main class that can save a node's information
+# Every node's save data extends from this class
+
+# Position of the node to save
+@export var position : Vector3 = Vector3.ZERO
+
+# Path to the scene of the node
+@export var scene_path : String = ""

ui/ingame_controls.gd

@@ -19,7 +19,7 @@ func _process(delta) -> void:
 			save_timer = 0.0
 			
 			# Save the game
-			SaveGame.save()
+			SaveManager.save_game()
 			
 			save_button_held_down = false
 		else:

ui/ingame_menu.gd

@@ -12,12 +12,12 @@ func _on_close_button_pressed() -> void:
 	pass # Replace with function body.
 
 func _update_monster_list() -> void:
-	for i in SaveData.monsters.size():
+	for i in SaveManager.current_save.party.size():
-		var monster = SaveData.monsters[i]
+		var monster = SaveManager.current_save.party[i]
 		var entry = monster_list_entry.instantiate()
 		
 		# populate the new entry
-		entry.populate(SaveData.monsters[i])
+		entry.populate(SaveManager.current_save.party[i])
 		
 		# add it to the list
 		monster_list_entry_container.add_child(entry)

ui/main_menu.gd

@@ -5,7 +5,7 @@ signal on_game_continued
 
 # On ready, check which buttons to show
 func _ready() -> void:
-	if SaveGame.savegame_exists():
+	if SaveManager.save_exists():
 		%ContinueGameButton.visible = true
 		%NewGameButton.visible = false
 

ui/ui.gd

@@ -34,7 +34,7 @@ func _on_ingame_controls_menu_button_clicked() -> void:
 	ingame_menu.visible = true
 
 # Updates the whole UI
-func _update_ui() -> void:
+func update() -> void:
 	# Updating the player info
 	ingame_menu._update_player_info()