Re-organize all projects (#4166)

Content.Client/Rotation/RotationVisualizer.cs

@@ -0,0 +1,67 @@
+using System;
+using Content.Shared.Rotation;
+using JetBrains.Annotations;
+using Robust.Client.Animations;
+using Robust.Client.GameObjects;
+using Robust.Shared.Animations;
+using Robust.Shared.Maths;
+
+namespace Content.Client.Rotation
+{
+    [UsedImplicitly]
+    public class RotationVisualizer : AppearanceVisualizer
+    {
+        public override void OnChangeData(AppearanceComponent component)
+        {
+            base.OnChangeData(component);
+
+            if (component.TryGetData<RotationState>(RotationVisuals.RotationState, out var state))
+            {
+                switch (state)
+                {
+                    case RotationState.Vertical:
+                        SetRotation(component, 0);
+                        break;
+                    case RotationState.Horizontal:
+                        SetRotation(component, Angle.FromDegrees(90));
+                        break;
+                }
+            }
+        }
+
+        private void SetRotation(AppearanceComponent component, Angle rotation)
+        {
+            var sprite = component.Owner.GetComponent<ISpriteComponent>();
+
+            if (!sprite.Owner.TryGetComponent(out AnimationPlayerComponent? animation))
+            {
+                sprite.Rotation = rotation;
+                return;
+            }
+
+            if (animation.HasRunningAnimation("rotate"))
+            {
+                animation.Stop("rotate");
+            }
+
+            animation.Play(new Animation
+            {
+                Length = TimeSpan.FromSeconds(0.125),
+                AnimationTracks =
+                {
+                    new AnimationTrackComponentProperty
+                    {
+                        ComponentType = typeof(ISpriteComponent),
+                        Property = nameof(ISpriteComponent.Rotation),
+                        InterpolationMode = AnimationInterpolationMode.Linear,
+                        KeyFrames =
+                        {
+                            new AnimationTrackProperty.KeyFrame(sprite.Rotation, 0),
+                            new AnimationTrackProperty.KeyFrame(rotation, 0.125f)
+                        }
+                    }
+                }
+            }, "rotate");
+        }
+    }
+}