test stats anche achievements

core/biome_generator/rails.gd

@@ -1,5 +1,8 @@
 extends Path3D
 
+const STEAM_DISTANCE_STAT: String = "stat_distance_km"
+const STEAM_DISTANCE_KM_PER_UNIT: float = 1#0.001
+
 @export_group("Train")
 ##train speed
 @export var train_speed: float = 6.0	
@@ -79,6 +82,7 @@ var tween_restart: Tween
 var environment_config: EnvironmentConfig
 var wagon_instances: Array[Node3D] = []
 var wagon_progress_offsets: Array[float] = []
+var _pending_steam_distance_km: float = 0.0
 
 func _ready() -> void:
 	randomize()
@@ -328,6 +332,7 @@ func train_move(delta: float) -> void:
 			
 			var current_speed = train_speed * stop_multiply
 			train_progress += current_speed * delta
+			_track_steam_distance(abs(current_speed) * delta)
 			
 			if enable_stops and stop_offset.size() > 0:
 				var target_offset = stop_offset[next_stop_index]
@@ -385,6 +390,29 @@ func train_move(delta: float) -> void:
 			train_instance.rotation.z += curve_roll
 			train_instance.rotation.x += curve_pitch
 
+#Calculate train distance for steam stats
+func _track_steam_distance(distance_units: float) -> void:
+	if distance_units <= 0.0 or not SteamManager.is_on_steam:
+		return
+
+	_pending_steam_distance_km += distance_units * STEAM_DISTANCE_KM_PER_UNIT
+	var whole_km: int = int(floor(_pending_steam_distance_km))
+	if whole_km <= 0:
+		return
+
+	_pending_steam_distance_km -= float(whole_km)
+	var total_distance_km: int = StatsManager.get_int(STEAM_DISTANCE_STAT) + whole_km
+	StatsManager.set_int(STEAM_DISTANCE_STAT, total_distance_km)
+	_check_distance_achievements(total_distance_km)
+	StatsManager.store()
+
+#Check achievements
+func _check_distance_achievements(total_distance_km: int) -> void:
+	if total_distance_km >= 100:
+		AchievementManager.unlock("ACH_DISTANCE_100")
+	if total_distance_km >= 200:
+		AchievementManager.unlock("ACH_DISTANCE_200")
+
 func _execute_stop(go_forward: bool = true) -> void:
 	stop_ongoing = true
 	stop_multiply = 0.0