added the game

Scripts/Parts/Checkpoint.gd

@@ -0,0 +1,60 @@
+class_name Checkpoint
+extends Node2D
+
+@export var nodes_to_delete: Array[Node] = []
+
+@export var optional := false
+
+signal crossed(player: Player)
+signal respawned
+
+static var passed := false
+static var respawn_position := Vector2.ZERO
+static var level := ""
+static var sublevel_id := 0
+
+static var old_state := [[], []]
+
+func _enter_tree() -> void:
+	if passed:
+		LevelPersistance.active_nodes = old_state.duplicate(true)
+
+func _ready() -> void:
+	if [Global.GameMode.CHALLENGE, Global.GameMode.MARATHON_PRACTICE].has(Global.current_game_mode):
+		queue_free()
+		return
+	if has_meta("is_flag") == false:
+		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 == "":
+		for i in nodes_to_delete:
+			i.queue_free()
+		for i in get_tree().get_nodes_in_group("Players"):
+			i.global_position = self.global_position
+			i.reset_physics_interpolation()
+			i.recenter_camera()
+		respawned.emit()
+
+
+func _exit_tree() -> void:
+	pass
+
+func on_area_entered(area: Area2D) -> void:
+	if area.owner is Player and not passed:
+		var player: Player = area.owner
+		player.passed_checkpoint()
+		passed = true
+		old_state = LevelPersistance.active_nodes.duplicate(true)
+		Level.start_level_path = Global.current_level.scene_file_path
+		if Global.current_game_mode == Global.GameMode.LEVEL_EDITOR or Global.current_game_mode == Global.GameMode.CUSTOM_LEVEL:
+			sublevel_id = Global.level_editor.sub_level_id
+		if Settings.file.difficulty.checkpoint_style == 2 and has_meta("is_flag"):
+			if player.power_state.state_name == "Small":
+				player.get_power_up("Big")
+		respawn_position = global_position
+		crossed.emit(area.owner)
+
+
+func on_tree_exiting() -> void:
+	pass # Replace with function body.