you can now have as MANY checkpoints as you want, in as many rooms as you want!

Scripts/Classes/Editor/LevelEditor.gd

@@ -160,7 +160,7 @@ func _physics_process(delta: float) -> void:
 		elif current_state == EditorState.TILE_MENU:
 			close_tile_menu()
 	if Input.is_action_just_pressed("editor_play") and (current_state == EditorState.IDLE or current_state == EditorState.PLAYTESTING) and Global.current_game_mode == Global.GameMode.LEVEL_EDITOR:
-		Checkpoint.passed = false
+		Checkpoint.passed_checkpoints.clear()
 		if current_state == EditorState.PLAYTESTING:
 			stop_testing()
 		else:

Scripts/Classes/Entities/Objects/CheckpointFlag.gd

@@ -10,7 +10,7 @@ func _ready() -> void:
 		owner.queue_free()
 		return
 	owner.show()
-	if Checkpoint.passed:
+	if owner.passed:
 		sprite.hide()
 		activated.show()
 

Scripts/Classes/LevelClass.gd

@@ -159,7 +159,7 @@ func transition_to_next_level() -> void:
 	first_load = true
 	SaveManager.write_save()
 	Global.transition_to_scene("res://Scenes/Levels/LevelTransition.tscn")
-	Checkpoint.passed = false
+	Checkpoint.passed_checkpoints.clear()
 
 func reload_level() -> void:
 	LevelTransition.level_to_transition_to = Level.start_level_path

Scripts/Classes/Singletons/Global.gd

@@ -263,7 +263,7 @@ func activate_p_switch() -> void:
 
 func reset_values() -> void:
 	PlayerGhost.idx = 0
-	Checkpoint.passed = false
+	Checkpoint.passed_checkpoints.clear()
 	Checkpoint.sublevel_id = 0
 	Door.unlocked_doors = []
 	Checkpoint.unlocked_doors = []

Scripts/Parts/Checkpoint.gd

@@ -8,7 +8,7 @@ extends Node2D
 signal crossed(player: Player)
 signal respawned
 
-static var passed := false
+var passed := false
 static var respawn_position := Vector2.ZERO
 static var level := ""
 static var sublevel_id := 0
@@ -16,10 +16,13 @@ static var keys_collected := 0
 static var old_state := [[], []]
 static var unlocked_doors := []
 
+static var passed_checkpoints := []
+
+var id := ""
+
 func _enter_tree() -> void:
-	if Global.level_editor != null:
-		if sublevel_id != Global.level_editor.sub_level_id and passed:
-			passed = false
+	id = get_id()
+	passed = passed_checkpoints.has(id)
 	if passed:
 		LevelPersistance.active_nodes = old_state.duplicate(true)
 
@@ -31,7 +34,7 @@ func _ready() -> void:
 		hide()
 		if Settings.file.difficulty.checkpoint_style != 0:
 			queue_free()
-	if passed and PipeArea.exiting_pipe_id == -1 and Global.current_game_mode != Global.GameMode.LEVEL_EDITOR and Level.vine_return_level == "":
+	if passed and PipeArea.exiting_pipe_id == -1 and Global.current_game_mode != Global.GameMode.LEVEL_EDITOR and Level.vine_return_level == "" and passed_checkpoints[passed_checkpoints.size() - 1] == id:
 		for i in nodes_to_delete:
 			i.queue_free()
 		for i in get_tree().get_nodes_in_group("Players"):
@@ -50,6 +53,7 @@ func on_area_entered(area: Area2D) -> void:
 		var player: Player = area.owner
 		player.passed_checkpoint()
 		passed = true
+		passed_checkpoints.append(id)
 		keys_collected = KeyItem.total_collected
 		old_state = LevelPersistance.active_nodes.duplicate(true)
 		unlocked_doors = Door.unlocked_doors.duplicate()
@@ -62,6 +66,11 @@ func on_area_entered(area: Area2D) -> void:
 		respawn_position = global_position
 		crossed.emit(area.owner)
 
+func get_id() -> String:
+	if Global.level_editor != null:
+		return str(Global.level_editor.sub_level_id) + "," + str(Vector2i(global_position)) + "," + get_parent().name
+	else:
+		return Global.current_level.scene_file_path + "," + str(Vector2i(global_position)) + "," + get_parent().name
 
 func on_tree_exiting() -> void:
 	pass # Replace with function body.

Scripts/Parts/LevelTransition.gd

@@ -41,7 +41,7 @@ func _ready() -> void:
 	Global.p_switch_active = false
 	Lakitu.present = false
 	Global.p_switch_timer = -1
-	if Checkpoint.passed:
+	if Checkpoint.passed_checkpoints.is_empty() == false:
 		Door.unlocked_doors = Checkpoint.unlocked_doors.duplicate()
 	else:
 		Door.unlocked_doors = []

Scripts/Parts/WarpPipeArea.gd

@@ -29,7 +29,7 @@ func update_visuals() -> void:
 func run_player_check(player: Player) -> void:
 	if Global.player_action_pressed(get_input_direction(enter_direction), player.player_id) and can_enter:
 		can_enter = false
-		Checkpoint.passed = false
+		Checkpoint.passed_checkpoints.clear()
 		SpeedrunHandler.is_warp_run = true
 		Global.reset_values()
 		Level.first_load = true

Scripts/UI/CustomLevelMenu.gd

@@ -19,7 +19,7 @@ func _ready() -> void:
 	ResourceSetterNew.cache.clear()
 	ResourceSetter.cache.clear()
 	Global.get_node("GameHUD").hide()
-	Checkpoint.passed = false
+	Checkpoint.passed_checkpoints.clear()
 	Global.world_num = 1
 	Global.level_num = 1
 	Global.reset_values()