initial commit

Shared/Behaviours/TweenRotator.cs

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+using Engine.Core;
+using Engine.Systems.Tween;
+
+namespace MyUniverse.Shared.Behaviours;
+
+public class TweenRotator : Behaviour2D, IRotator, IFirstFrameUpdate, ILastFrameUpdate
+{
+    private float duration = 5f;
+    private float angle = 180;
+    private IEasing easeMethod = EaseInOutQuad.Instance;
+    private ITweenManager tweenManager = null!;
+    private ITween tween = null!;
+
+    public void FirstActiveFrame()
+    {
+        tweenManager = Universe.FindRequiredBehaviour<ITweenManager>();
+
+        TweenRotation();
+    }
+
+    private void TweenRotation()
+    {
+        if (Transform.Rotation >= 360f)
+            Transform.Rotation -= 360f;
+
+        tween = Transform.TweenRotation(tweenManager, duration, Transform.Rotation + angle)
+            .Ease(easeMethod)
+            .OnComplete(TweenRotation);
+    }
+
+    public void LastActiveFrame()
+    {
+        tweenManager.CancelTween(tween);
+    }
+}