Transform Authoring Component (#1474)

workers/unity/Packages/io.improbable.gdk.transformsynchronization/MonoBehaviours/TransformFromGameObjectAuthoringComponent.cs

@@ -0,0 +1,20 @@
+using Improbable.Gdk.Core;
+using Improbable.Gdk.Core.SceneAuthoring;
+using UnityEngine;
+
+namespace Improbable.Gdk.TransformSynchronization
+{
+    [AddComponentMenu("SpatialOS/Authoring Components/Transform From GameObject Authoring Component")]
+    public class TransformFromGameObjectAuthoringComponent : MonoBehaviour, ISpatialOsAuthoringComponent
+    {
+#pragma warning disable 649
+        [SerializeField] private string writeAccess;
+#pragma warning restore 649
+
+        public void WriteTo(EntityTemplate template)
+        {
+            var transformSnapshot = TransformUtils.CreateTransformSnapshot(transform.position, transform.rotation);
+            template.AddComponent(transformSnapshot, writeAccess);
+        }
+    }
+}

workers/unity/Packages/io.improbable.gdk.transformsynchronization/Tests/Editmode/Improbable.Gdk.TransformSynchronization.EditmodeTests.asmdef

@@ -4,7 +4,9 @@
         "Improbable.Gdk.TransformSynchronization",
         "Unity.Entities",
         "UnityEngine.TestRunner",
-        "UnityEditor.TestRunner"
+        "UnityEditor.TestRunner",
+        "Improbable.Gdk.Generated",
+        "Improbable.Gdk.Core"
     ],
     "includePlatforms": [
         "Editor"
@@ -19,5 +21,6 @@
     "defineConstraints": [
         "UNITY_INCLUDE_TESTS"
     ],
-    "versionDefines": []
+    "versionDefines": [],
+    "noEngineReferences": false
 }

workers/unity/Packages/io.improbable.gdk.transformsynchronization/Tests/Editmode/TransformFromGameObjectTests.cs

@@ -0,0 +1,32 @@
+using Improbable.Gdk.Core;
+using NUnit.Framework;
+using UnityEngine;
+
+namespace Improbable.Gdk.TransformSynchronization.EditmodeTests
+{
+    [TestFixture]
+    public class TransformFromGameObjectTests
+    {
+        [Test]
+        public void WriteTo_uses_the_GameObject_position_and_rotation()
+        {
+            var gameObject = new GameObject();
+            gameObject.transform.position = new Vector3(100, 100, 100);
+            gameObject.transform.rotation = Quaternion.Euler(90, 0, 0);
+            var transformFromGameObject = gameObject.AddComponent<TransformFromGameObjectAuthoringComponent>();
+
+            var entityTemplate = new EntityTemplate();
+            transformFromGameObject.WriteTo(entityTemplate);
+
+            Assert.IsTrue(entityTemplate.TryGetComponent<TransformInternal.Snapshot>(out var transform));
+
+            var position = transform.Location.ToUnityVector();
+            var positionDifference = Vector3.Distance(gameObject.transform.position, position);
+            Assert.AreEqual(0.0, positionDifference, float.Epsilon);
+
+            var rotation = transform.Rotation.ToUnityQuaternion();
+            var rotationDifference = Quaternion.Angle(gameObject.transform.rotation, rotation);
+            Assert.AreEqual(0.0, rotationDifference, float.Epsilon);
+        }
+    }
+}