did a lot of stuff holy shit

scripts/autoloads/level_manager.gd

@@ -0,0 +1,26 @@
+extends Node
+
+@onready var transition: CanvasLayer = $Transition
+
+@export var levels: Array[PackedScene]
+var level_pointer: int = 0
+
+const PROGRESS_SAVE_PATH: String = "user://save.cfg"
+var progress_save: ConfigFile = ConfigFile.new()
+
+func  _ready() -> void:
+	progress_save.load(PROGRESS_SAVE_PATH)
+
+func next_level() -> void:
+	level_pointer += 1
+	if level_pointer < levels.size():
+		transition.show()
+		await get_tree().create_timer(1).timeout
+		get_tree().change_scene_to_packed(levels[level_pointer])
+		await get_tree().create_timer(2).timeout
+		transition.hide()
+	else:
+		get_tree().change_scene_to_file("res://scenes/gui/menus/game_finished.tscn")
+
+func start_last_level() -> void:
+	pass

scripts/autoloads/window_manager.gd

@@ -7,14 +7,14 @@ var fullscreen: bool
 
 func _ready() -> void:
 	process_mode = Node.PROCESS_MODE_ALWAYS
-	close_request_window = preload("res://scenes/close_game_confirmation.tscn").instantiate()
+	close_request_window = preload("res://scenes/gui/menus/close_game_confirmation.tscn").instantiate()
 	add_child(close_request_window)
 	pause_menu = preload("res://scenes/gui/menus/pause_menu.tscn").instantiate()
 	add_child(pause_menu)
 	
 	fullscreen = DisplayServer.window_get_mode() == 4
 
-func _process(delta: float) -> void:
+func _process(_delta: float) -> void:
 	if Input.is_action_just_released("fullscreen"):
 		fullscreen = !fullscreen
 		toggle_fullscreen()

scripts/close_game_confirmation.gd

@@ -8,3 +8,7 @@ func _on_main_menu_pressed() -> void:
 	hide()
 	WindowManager.pause_menu.hide()
 	get_tree().change_scene_to_file("res://scenes/gui/menus/main_menu.tscn")
+
+func _process(_delta: float) -> void:
+	if Input.is_action_just_pressed("pause"):
+		hide()

scripts/game_over.gd

@@ -0,0 +1,7 @@
+extends CanvasLayer
+
+
+
+func _on_button_pressed() -> void:
+	get_tree().paused = false
+	get_tree().reload_current_scene()

scripts/level_finish_area.gd

@@ -0,0 +1,5 @@
+extends Area3D
+
+func _on_body_entered(body: Node3D) -> void:
+	if body is Player:
+		LevelManager.next_level()

scripts/menus/game_finished.gd

@@ -0,0 +1,7 @@
+extends Control
+
+func _ready() -> void:
+	Input.mouse_mode = Input.MOUSE_MODE_VISIBLE
+
+func _on_button_pressed() -> void:
+	get_tree().change_scene_to_file("res://scenes/gui/menus/main_menu.tscn")

scripts/menus/level_selection.gd

@@ -1,11 +1 @@
 extends PanelContainer
-
-
-# Called when the node enters the scene tree for the first time.
-func _ready() -> void:
-	pass # Replace with function body.
-
-
-# Called every frame. 'delta' is the elapsed time since the previous frame.
-func _process(delta: float) -> void:
-	pass

scripts/menus/main_menu.gd

@@ -3,6 +3,7 @@ class_name MainMenu
 
 func _ready() -> void:
 	Input.mouse_mode = Input.MOUSE_MODE_VISIBLE
+	LevelManager.level_pointer = 0
 
 func _on_start_game_pressed() -> void:
 	get_tree().change_scene_to_file("res://scenes/levels/lvl_1.tscn")

scripts/player.gd

@@ -28,6 +28,10 @@ func _ready() -> void:
 	WindowManager.pause_menu.continued.connect(capture)
 
 func _physics_process(delta: float) -> void:
+	if position.y < -33:
+		$GameOver.show()
+		Input.mouse_mode = Input.MOUSE_MODE_VISIBLE
+		get_tree().paused = true
 	gun_cam.transform = camera.transform
 	
 	if not is_on_floor():