💫 Better build effects

Scripts/Tiles/BaseTile.cs

@@ -1,4 +1,4 @@
-using System.Numerics;
+using System.Threading.Tasks;
 using AceFieldNewHorizon.Scripts.System;
 using Godot;
 using Vector2 = Godot.Vector2;
@@ -7,9 +7,14 @@ namespace AceFieldNewHorizon.Scripts.Tiles;
 
 public partial class BaseTile : Node2D
 {
+    [Export] public string TileId { get; set; }
+    
+    public BuildingData TileData { get; set; }
+
     private CollisionShape2D _collisionShape;
     private Sprite2D _sprite;
     private ColorRect _progressOverlay;
+    private AudioStreamPlayer _completionSound;
 
     public override void _Ready()
     {
@@ -18,6 +23,15 @@ public partial class BaseTile : Node2D
         _progressOverlay = GetNodeOrNull<ColorRect>("ProgressOverlay");
         if (_progressOverlay != null)
             _progressOverlay.Visible = false;
+
+        // Setup audio player
+        _completionSound = new AudioStreamPlayer();
+        AddChild(_completionSound);
+        var sound = GD.Load<AudioStream>("res://Sounds/Events/ConstructionComplete.wav");
+        if (sound != null)
+        {
+            _completionSound.Stream = sound;
+        }
     }
 
     public void SetGhostMode(bool canPlace)
@@ -47,6 +61,7 @@ public partial class BaseTile : Node2D
         var texSize = new Vector2(GridUtils.TileSize, GridUtils.TileSize);
 
         _progressOverlay.Visible = true;
+        _progressOverlay.Modulate = Colors.White;
         _progressOverlay.Color = new Color(0, 0, 1, 0.4f); // semi-transparent blue
 
         async void RunProgress()
@@ -67,9 +82,33 @@ public partial class BaseTile : Node2D
                 );
             }
 
-            _progressOverlay.Visible = false;
+            // Fade out the overlay instead of making it instantly disappear
+            await FadeOutOverlay(0.5f);
         }
 
         RunProgress();
     }
+
+    private async Task FadeOutOverlay(float duration)
+    {
+        var elapsed = 0f;
+        var startAlpha = _progressOverlay.Modulate.A;
+
+        // Play completion sound
+        if (_completionSound?.Stream != null)
+        {
+            _completionSound.Play();
+        }
+
+        while (elapsed < duration)
+        {
+            await ToSignal(GetTree(), SceneTree.SignalName.ProcessFrame);
+            elapsed += (float)GetProcessDeltaTime();
+            var alpha = Mathf.Lerp(startAlpha, 0f, elapsed / duration);
+            _progressOverlay.Modulate = new Color(1, 1, 1, alpha);
+        }
+
+        _progressOverlay.Visible = false;
+        _progressOverlay.Modulate = Colors.White; // Reset alpha for next use
+    }
 }