From 88b575539a32f14af65494ceb3fe631239cf99f9 Mon Sep 17 00:00:00 2001
From: Wojtek Figat <wojtek@figat.pl>
Date: Wed, 17 Feb 2021 16:05:59 +0100
Subject: [PATCH] Add more utilities to SceneReference

---
 Source/Engine/Engine/SceneReference.cs | 90 +++++++++++++++++++++++++-
 1 file changed, 89 insertions(+), 1 deletion(-)

diff --git a/Source/Engine/Engine/SceneReference.cs b/Source/Engine/Engine/SceneReference.cs
index 0cdadf2e9..c40035c2a 100644
--- a/Source/Engine/Engine/SceneReference.cs
+++ b/Source/Engine/Engine/SceneReference.cs
@@ -7,7 +7,7 @@ namespace FlaxEngine
     /// <summary>
     /// Represents the reference to the scene asset. Stores the unique ID of the scene to reference. Can be used to load the selected scene.
     /// </summary>
-    public struct SceneReference
+    public struct SceneReference : IComparable, IComparable<Guid>, IComparable<SceneReference>
     {
         /// <summary>
         /// The identifier of the scene asset (and the scene object).
@@ -22,5 +22,93 @@ namespace FlaxEngine
         {
             ID = id;
         }
+
+        /// <summary>
+        /// Compares two values and returns true if are equal or false if unequal.
+        /// </summary>
+        /// <param name="left">The left value.</param>
+        /// <param name="right">The right value.</param>
+        /// <returns>True if values are equal, otherwise false.</returns>
+        public static bool operator ==(SceneReference left, SceneReference right)
+        {
+            return left.ID == right.ID;
+        }
+
+        /// <summary>
+        /// Compares two values and returns false if are equal or true if unequal.
+        /// </summary>
+        /// <param name="left">The left value.</param>
+        /// <param name="right">The right value.</param>
+        /// <returns>True if values are not equal, otherwise false.</returns>
+        public static bool operator !=(SceneReference left, SceneReference right)
+        {
+            return left.ID != right.ID;
+        }
+
+        /// <summary>
+        /// Compares two values and returns true if are equal or false if unequal.
+        /// </summary>
+        /// <param name="left">The left value.</param>
+        /// <param name="right">The right value.</param>
+        /// <returns>True if values are equal, otherwise false.</returns>
+        public static bool operator ==(SceneReference left, Guid right)
+        {
+            return left.ID == right;
+        }
+
+        /// <summary>
+        /// Compares two values and returns false if are equal or true if unequal.
+        /// </summary>
+        /// <param name="left">The left value.</param>
+        /// <param name="right">The right value.</param>
+        /// <returns>True if values are not equal, otherwise false.</returns>
+        public static bool operator !=(SceneReference left, Guid right)
+        {
+            return left.ID != right;
+        }
+
+        /// <inheritdoc />
+        public int CompareTo(object obj)
+        {
+            if (obj is Guid id)
+                return CompareTo(id);
+            if (obj is SceneReference other)
+                return CompareTo(other);
+            return 0;
+        }
+
+        /// <inheritdoc />
+        public int CompareTo(Guid other)
+        {
+            return ID.CompareTo(other);
+        }
+
+        /// <inheritdoc />
+        public int CompareTo(SceneReference other)
+        {
+            return ID.CompareTo(other.ID);
+        }
+
+        /// <inheritdoc />
+        public override bool Equals(object obj)
+        {
+            if (obj is Guid id)
+                return ID == id;
+            if (obj is SceneReference other)
+                return ID == other.ID;
+            return false;
+        }
+
+        /// <inheritdoc />
+        public override int GetHashCode()
+        {
+            return ID.GetHashCode();
+        }
+
+        /// <inheritdoc />
+        public override string ToString()
+        {
+            return ID.ToString();
+        }
     }
 }