增加了开始按钮，缺纹理。

objects/main_menu/main_menu.gd

@@ -1,5 +1,6 @@
 extends AnimatedSprite2D
 
+var ChapterMenu = preload("res://levels/chapter_menu/chapter_menu.tscn")
 
 # Called when the node enters the scene tree for the first time.
 func _ready():
@@ -15,4 +16,8 @@ func _process(delta):
 
 func _on_animation_finished():
 	play("wait_for_start")
-	pass # Replace with function body.
+
+
+func _on_start_button_pressed():
+	get_tree().root.add_child(ChapterMenu.instantiate())
+	queue_free()

objects/main_menu/main_menu.tscn

@@ -81,4 +81,11 @@ sprite_frames = SubResource("SpriteFrames_b4517")
 centered = false
 script = ExtResource("14_npy3s")
 
+[node name="start_button" type="Button" parent="."]
+offset_left = 88.8
+offset_top = 76.8
+offset_right = 104.8
+offset_bottom = 92.8
+
 [connection signal="animation_finished" from="." to="." method="_on_animation_finished"]
+[connection signal="pressed" from="start_button" to="." method="_on_start_button_pressed"]