fix restart+game over crash

autoloads/game.gd

@@ -46,6 +46,7 @@ var enemy_speed_factor: float = 1.0 # multiplier of enemy speed
 var is_easy_mode: bool = false # whether to do easy-specific behaviors
 var use_lives: bool = false
 var can_pause: bool = true
+var can_restart: bool = true
 var current_palette: String = "default"
 var still_playing: bool = false
 
@@ -225,6 +226,7 @@ func format_time(seconds: float) -> String:
 
 #Restart level
 func restart_level():
+	if can_restart:
 		clear_collectibles()
 		Audio.ac_climb.stop()
 		Audio.ac_die.stop()
@@ -248,7 +250,8 @@ func has_collection_bonus():
 # called when player dies
 func _on_player_died() -> void:
 	deaths += 1
-	if lives <= 0 and use_lives:
+	if use_lives and lives <= 0:
+		can_restart = false
 		Audio.play_sound(Audio.a_game_over, Audio.ac_die)
 		get_tree().get_nodes_in_group("player")[0].queue_free()
 		var time_tween = create_tween()
@@ -262,6 +265,7 @@ func _on_player_died() -> void:
 		var map = get_map()
 		var gover = load("res://menus/game_over.tscn").instance()
 		map.add_child(gover)
+		can_restart = true
 	else:
 		# count death
 		lives -= 1