first commit

scripts/user_interface/ButtonCommon.cs

@@ -0,0 +1,16 @@
+using Godot;
+using System;
+
+public class ButtonCommon : Button
+{
+    AudioStreamPlayer audio;
+
+    public override void _Ready() {
+        this.Connect("pressed", this, nameof(event_Btn_pressed));
+        audio = GetNode<AudioStreamPlayer>("AudioClick");
+    }
+
+    private void event_Btn_pressed() {
+        audio.Play();
+    }
+}