level select and save improvments

- level select starts on the stage you just came from
- default time from save file is INF, so any actual time will get saved
- INF renders as "-:--:--" to indicate a time has not been set

game.gd

@@ -100,11 +100,13 @@ func save():
 
 #Convert seconds into M:SS:MS
 func timeify(input):
+	if input < 600:
 		var minutes = str(floor(input / 60))
 		var seconds = floor(fmod(input,60))
 		var milliseconds := floor(fmod(input, 1) * 100)
-	if input < 600:
 		return minutes + ":" + ("%02d" % seconds) + ":" + ("%02d" % milliseconds)
+	elif input == INF:
+		return "-:--:--"
 	else:
 		return "9:59:99"
 

maps/level_select.gd

@@ -27,7 +27,7 @@ var current_shard = 0
 
 # Called when the node enters the scene tree for the first time.
 func _ready():
-	change_current_level(0)
+	change_current_level(Game.current_level)
 	Game.ac_music.stop()
 
 func _physics_process(delta):

scripts/save.gd

@@ -15,10 +15,10 @@ func get_level_data(save_id):
 	return {
 		# any% score and time
 		score_any = file.get_value(save_id, "score_any", 0),
-		time_any = file.get_value(save_id, "time_any", 0),
+		time_any = file.get_value(save_id, "time_any", INF),
 		# 100% score and time
 		score_100 = file.get_value(save_id, "score_100", 0),
-		time_100 = file.get_value(save_id, "time_100", 0),
+		time_100 = file.get_value(save_id, "time_100", INF),
 		shards = shards
 	}