Move transform interp to an entity system.

2026-09-06 17:58:05 +02:00 · 2020-06-19 00:18:59 +02:00
parent 67efd69679
commit 77b7d4f683
5 changed files with 110 additions and 100 deletions
@@ -0,0 +1,52 @@
+using JetBrains.Annotations;
+using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components.Transform;
+using Robust.Shared.GameObjects.Systems;
+using Robust.Shared.Interfaces.Timing;
+using Robust.Shared.IoC;
+using Robust.Shared.Maths;
+
+namespace Robust.Client.GameObjects.EntitySystems
+{
+    /// <summary>
+    ///     Handles interpolation of transform positions.
+    /// </summary>
+    [UsedImplicitly]
+    internal sealed class TransformSystem : EntitySystem
+    {
+        [Dependency] private readonly IGameTiming _gameTiming = default!;
+
+        public override void Initialize()
+        {
+            base.Initialize();
+
+            EntityQuery = new TypeEntityQuery<TransformComponent>();
+        }
+
+        public override void FrameUpdate(float frameTime)
+        {
+            base.FrameUpdate(frameTime);
+
+            var step = (float) (_gameTiming.TickRemainder.TotalSeconds / _gameTiming.TickPeriod.TotalSeconds);
+
+            foreach (var entity in RelevantEntities)
+            {
+                var transform = (TransformComponent) entity.Transform;
+
+                if (transform.LerpDestination != null)
+                {
+                    var oldNext = transform.LerpDestination.Value;
+                    transform.LocalPosition = Vector2.Lerp(transform.LerpSource, oldNext, step);
+                    transform.LerpDestination = oldNext;
+                }
+
+                if (transform.LerpAngle != null)
+                {
+                    var oldNext = transform.LerpAngle.Value;
+                    transform.LocalRotation = Angle.Lerp(transform.LerpSourceAngle, oldNext, step);
+                    transform.LerpAngle = oldNext;
+                }
+            }
+        }
+    }
+}