Reworked main menu. Fixed projectiles bug

menu/credits.gd

@@ -1,15 +1,21 @@
-extends Node
+extends Control
 
 
-signal show_main_menu
+signal back
 
 
-@onready var main_menu_button := $%MainMenuButton
+@onready var main_menu_button := $%BackButton
 
 
 func _ready() -> void:
 	main_menu_button.grab_focus()
 
 
-func _on_main_menu_button_pressed() -> void:
-	show_main_menu.emit()
+func _on_visibility_changed() -> void:
+	if not is_node_ready(): return
+	if not visible: return
+	
+	main_menu_button.grab_focus()
+
+func _on_back_button_pressed() -> void:
+	back.emit()