One-to-one GameObject converter (#1472)

workers/unity/Packages/io.improbable.gdk.core/AssemblyInfo.cs

@@ -1,6 +1,7 @@
 using System.Runtime.CompilerServices;
 
 [assembly: InternalsVisibleTo("Improbable.Gdk.Core.EditmodeTests")]
+[assembly: InternalsVisibleTo("Improbable.Gdk.Core.Editor")]
 [assembly: InternalsVisibleTo("Improbable.Gdk.GameObjectCreation.EditmodeTests")]
 [assembly: InternalsVisibleTo("Improbable.Gdk.EditmodeTests")]
 [assembly: InternalsVisibleTo("Improbable.Gdk.PlaymodeTests")]

workers/unity/Packages/io.improbable.gdk.core/Editor/SceneAuthoring/ConvertToSingleEntityEditor.cs

@@ -0,0 +1,36 @@
+using Improbable.Gdk.Core.SceneAuthoring;
+using UnityEditor;
+
+namespace Improbable.Gdk.Core.Editor.SceneAuthoring
+{
+    [CustomEditor(typeof(ConvertToSingleEntity))]
+    public class ConvertToSingleEntityEditor : UnityEditor.Editor
+    {
+        private SerializedProperty useSpecificEntityIdProperty;
+        private SerializedProperty desiredEntityIdProperty;
+        private SerializedProperty readAclProperty;
+
+        private void OnEnable()
+        {
+            useSpecificEntityIdProperty = serializedObject.FindProperty(nameof(ConvertToSingleEntity.UseSpecificEntityId));
+            desiredEntityIdProperty = serializedObject.FindProperty(nameof(ConvertToSingleEntity.DesiredEntityId));
+            readAclProperty = serializedObject.FindProperty(nameof(ConvertToSingleEntity.ReadAcl));
+        }
+
+        public override void OnInspectorGUI()
+        {
+            serializedObject.Update();
+
+            EditorGUILayout.PropertyField(useSpecificEntityIdProperty);
+
+            if (useSpecificEntityIdProperty.boolValue)
+            {
+                EditorGUILayout.PropertyField(desiredEntityIdProperty);
+            }
+
+            EditorGUILayout.PropertyField(readAclProperty);
+
+            serializedObject.ApplyModifiedProperties();
+        }
+    }
+}

workers/unity/Packages/io.improbable.gdk.core/SceneAuthoring/ConvertToSingleEntity.cs

@@ -0,0 +1,32 @@
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace Improbable.Gdk.Core.SceneAuthoring
+{
+    [AddComponentMenu("SpatialOS/Authoring Components/Convert to Single Entity")]
+    public class ConvertToSingleEntity : MonoBehaviour, IConvertGameObjectToSpatialOsEntity
+    {
+        [SerializeField] internal bool UseSpecificEntityId;
+        [SerializeField] internal long DesiredEntityId;
+        [SerializeField] internal string[] ReadAcl = { };
+
+        public List<ConvertedEntity> Convert()
+        {
+            var components = GetComponents<ISpatialOsAuthoringComponent>();
+            var template = new EntityTemplate();
+
+            foreach (var component in components)
+            {
+                component.WriteTo(template);
+            }
+
+            template.SetReadAccess(ReadAcl);
+
+            var entity = UseSpecificEntityId
+                ? new ConvertedEntity(new EntityId(DesiredEntityId), template)
+                : new ConvertedEntity(template);
+
+            return new List<ConvertedEntity> { entity };
+        }
+    }
+}