fix snow and exposure

core/main_scene_ui/main_scene_ui.gd

@@ -196,8 +196,8 @@ func _on_photo_taken_finished() -> void:
 	StatsManager.store()
 
 func _on_choo_choo_button_pressed() -> void:
-	#play sfx
-	pass
+	UIEvents.toot_toot.emit(true)
+	AchievementManager.is_unlocked("ACH_CHANGE_TRAIN_COLOR")
 
 func _set_buttons_mouse_filter(ignore: bool) -> void:
 	var filter = Control.MOUSE_FILTER_IGNORE if ignore else Control.MOUSE_FILTER_STOP