add train control game

scripts/trainjourney.gd

@@ -0,0 +1,129 @@
+extends Node3D
+
+@onready var track_generator: TrackGenerator = $TrackGenerator
+@onready var train: Train = $Train
+@onready var camera: TrainJourneyCamera = $TrainCamera
+
+@onready var speed_label : Label = $HUD/speed_label
+@onready var camera_label : Label = $HUD/camera_label
+@onready var distance_label : Label = $HUD/tripdistance_label
+@onready var total_distance_label : Label = $HUD/totaldistance_label
+@onready var time_label : Label = $HUD/triptime_label
+@onready var totaltime_label : Label = $HUD/totaltime_label
+@onready var auto_save_timer = $AutoSaveTimer
+@onready var trip_timer = $TripTime
+
+var savegame_path: String = "user://savegame.save"
+var total_time_in_secs : int = 0
+@export var main_scene: PackedScene
+
+
+func _ready() -> void:
+	# caricamento stato gioco
+	load_game()
+
+	# avvia autosaver
+	auto_save_timer.start()
+	# time
+	trip_timer.start()
+
+	train.track_generator = track_generator
+	camera.train = train
+	
+	# Terreno
+	var ground = MeshInstance3D.new()
+	ground.name = "Ground"
+	var plane = PlaneMesh.new()
+	plane.size = Vector2(2000, 2000)
+	ground.mesh = plane
+	
+	var ground_mat = StandardMaterial3D.new()
+	ground_mat.albedo_color = Color(0.35, 0.48, 0.28)
+	ground_mat.roughness = 1.0
+	ground.material_override = ground_mat
+	ground.position.y = -0.15
+	add_child(ground)
+
+
+func _process(_delta: float) -> void:
+	_update_ui()
+	_update_ground()
+	
+	if Input.is_action_just_pressed("ui_cancel"):
+		SceneSwitcher.switch_scene(main_scene.resource_path)
+
+
+func _update_ui() -> void:
+	if speed_label and train:
+		var kmh = train.get_speed() * 3.6
+		speed_label.text = "Velocità: %.0f km/h" % kmh
+	
+	if distance_label and train:
+		var km = train.distance_traveled / 1000.0
+		distance_label.text = "Distanza viaggio: %.2f km" % km
+
+	if total_distance_label and train:
+		Gamestate.total_distance = train.distance_traveled
+		var km = (Gamestate.total_distance + Gamestate.initial_distance) / 1000
+		total_distance_label.text = "Distanza totale: %.2f km" % km
+
+	if time_label and train:
+		var h = int(total_time_in_secs / 3600.0)
+		var m = int(total_time_in_secs / 60.0)
+		var s = total_time_in_secs - m * 60		
+		time_label.text = "Tempo viaggio: %02d:%02d:%02d" % [h, m, s]
+	
+	if totaltime_label and train:
+		Gamestate.total_time = total_time_in_secs
+		var tot = Gamestate.total_time + Gamestate.initial_time
+		var h = int(tot / 3600.0)
+		var m = int(tot / 60.0)
+		var s = tot - m * 60		
+		totaltime_label.text = "Tempo totale: %02d:%02d:%02d" % [h, m, s]
+		
+	if camera_label and camera:
+		camera_label.text = "Camera: %s" % camera.get_mode_name()
+
+
+func _update_ground() -> void:
+	var ground = get_node_or_null("Ground")
+	if ground and train:
+		var pos = train.get_locomotive_position()
+		ground.position.x = pos.x
+		ground.position.z = pos.z
+
+
+func save_game():
+	var save_file = FileAccess.open(savegame_path, FileAccess.WRITE)
+	var save_nodes = get_tree().get_nodes_in_group("save_data")
+	
+	for node in save_nodes:
+		if !node.has_method("save"):
+			continue
+		var node_data = node.call("save")  # ogni nodo implementa il suo save()
+		save_file.store_line(JSON.stringify(node_data))
+
+
+func load_game():
+	if not FileAccess.file_exists(savegame_path):
+		return  # nessun salvataggio trovato
+
+	var save_file = FileAccess.open(savegame_path, FileAccess.READ)
+	while save_file.get_position() < save_file.get_length():
+		var json_string = save_file.get_line()
+		var node_data = JSON.parse_string(json_string)
+		
+		if node_data == null:
+			continue
+		
+		if node_data["filename"] == "res://scenes/gamestate.tscn" and node_data["parent"] == "/root":
+			Gamestate.SetInitialValue(node_data["total_distance"], node_data["total_time"])
+
+
+func _on_timer_timeout() -> void:
+	save_game()
+
+
+func _on_trip_time_timeout() -> void:
+	total_time_in_secs += 1
+