Added main menu

title_screen.gd

@@ -0,0 +1,58 @@
+extends Node
+
+signal continue_game
+signal new_game
+signal quit_game
+
+var _current_scene: Node
+
+
+func _ready() -> void:
+    _show_main_menu()
+
+
+func _show_main_menu() -> void:
+    if _current_scene != null:
+        _current_scene.queue_free()
+    
+    var scene : Node = load("res://menu/main_menu.tscn").instantiate()
+    add_child(scene)
+    scene.continue_game.connect(_continue_game)
+    scene.new_game.connect(_new_game)
+    scene.show_options.connect(_show_options)
+    scene.quit_game.connect(_quit_game)
+    _current_scene = scene
+    
+
+func _continue_game() -> void:
+    continue_game.emit()
+    
+
+func _new_game() -> void:
+    new_game.emit()
+    
+    
+func _quit_game() -> void:
+    quit_game.emit()
+    
+
+func _show_options() -> void:
+    if _current_scene != null:
+        _current_scene.queue_free()
+    
+    var scene : Node = load("res://menu/options.tscn").instantiate()
+    add_child(scene)
+    scene.show_main_menu.connect(_show_main_menu)
+    scene.show_credits.connect(_show_credits)
+    _current_scene = scene
+
+
+func _show_credits() -> void:
+    if _current_scene != null:
+        _current_scene.queue_free()
+    
+    var scene : Node = load("res://menu/credits.tscn").instantiate()
+    add_child(scene)
+    scene.show_main_menu.connect(_show_main_menu)
+    _current_scene = scene
+