Add core game components including ConfigFileHandler, GameManager, SaveSystem, and UIManager

scripts/components/FlashingComponent.cs

@@ -0,0 +1,83 @@
+using Godot;
+
+namespace Mr.BrickAdventures.scripts.components;
+
+public partial class FlashingComponent : Node
+{
+    [Export] public Node2D Sprite { get; set; }
+    [Export] public float FlashDuration { get; set; } = 0.5f;
+    [Export] public float FlashTime { get; set; } = 0.1f;
+    [Export] public bool UseModulate { get; set; } = true;
+    [Export] public HealthComponent HealthComponent { get; set; }
+
+    private Tween _tween;
+
+    public override void _Ready()
+    {
+        if (HealthComponent != null)
+        {
+            HealthComponent.HealthChanged += OnHealthChanged;
+            HealthComponent.Death += OnDeath;
+        }
+
+        if (Sprite == null)
+        {
+            GD.PushError("FlashingComponent: Sprite node is not set.");
+            return;
+        }
+    }
+
+    public void StartFlashing()
+    {
+        if (Sprite == null) return;
+
+        _tween?.Kill();
+
+        _tween = CreateTween();
+        _tween.SetParallel(true);
+
+        var flashes = (int)(FlashDuration / FlashTime);
+        for (var i = 0; i < flashes; i++)
+        {
+            if (UseModulate)
+            {
+                var opacity = i % 2 == 0 ? 1.0f : 0.3f;
+                _tween.TweenProperty(Sprite, "modulate:a", opacity, FlashTime);
+            }
+            else
+            {
+                var visible = i % 2 == 0;
+                _tween.TweenProperty(Sprite, "visible", visible, FlashTime);
+            }
+        }
+
+        _tween.TweenCallback(Callable.From(StopFlashing));
+    }
+
+    public void StopFlashing()
+    {
+        if (UseModulate)
+        {
+            var modulateColor = Sprite.GetModulate();
+            modulateColor.A = 1.0f;
+            Sprite.SetModulate(modulateColor);
+        }
+        else
+        {
+            Sprite.SetVisible(true);
+        }
+    }
+
+    private void OnHealthChanged(float delta, float totalHealth)
+    {
+        if (delta < 0f)
+        {
+            StartFlashing();
+        }
+    }
+    
+    private void OnDeath()
+    {
+        StopFlashing();
+    }
+}