From a5c1b6c2b4422386d546f9354bd34ed7aab3cc06 Mon Sep 17 00:00:00 2001
From: Ellpeck <megamaximal@gmail.com>
Date: Thu, 13 Aug 2020 19:46:49 +0200
Subject: [PATCH] allow sprite animations to be updated by a time span

---
 MLEM/Animations/SpriteAnimation.cs      | 12 ++++++++----
 MLEM/Animations/SpriteAnimationGroup.cs |  9 +++++++--
 2 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/MLEM/Animations/SpriteAnimation.cs b/MLEM/Animations/SpriteAnimation.cs
index d35b29f..a85af4c 100644
--- a/MLEM/Animations/SpriteAnimation.cs
+++ b/MLEM/Animations/SpriteAnimation.cs
@@ -112,13 +112,17 @@ namespace MLEM.Animations {
         /// </summary>
         /// <param name="time">The game's time</param>
         public void Update(GameTime time) {
-            this.SetTime(this.TimeIntoAnimation + time.ElapsedGameTime.TotalSeconds * this.SpeedMultiplier);
+            this.Update(time.ElapsedGameTime);
         }
-        
-        internal void SetTime(double totalTime) {
+
+        /// <summary>
+        /// Updates this animation, causing <see cref="TimeIntoAnimation"/> to be increased and the <see cref="CurrentFrame"/> to be updated.
+        /// </summary>
+        /// <param name="elapsed">The amount of time that has passed</param>
+        public void Update(TimeSpan elapsed) {
             if (this.IsFinished || this.IsPaused)
                 return;
-            this.TimeIntoAnimation = totalTime;
+            this.TimeIntoAnimation += elapsed.TotalSeconds * this.SpeedMultiplier;
             if (this.TimeIntoAnimation >= this.TotalTime) {
                 if (!this.IsLooping) {
                     this.IsFinished = true;
diff --git a/MLEM/Animations/SpriteAnimationGroup.cs b/MLEM/Animations/SpriteAnimationGroup.cs
index c52bba8..e7f8146 100644
--- a/MLEM/Animations/SpriteAnimationGroup.cs
+++ b/MLEM/Animations/SpriteAnimationGroup.cs
@@ -62,11 +62,16 @@ namespace MLEM.Animations {
             return this;
         }
 
-        /// <inheritdoc cref="SpriteAnimation.Update"/>
+        /// <inheritdoc cref="SpriteAnimation.Update(GameTime)"/>
         public void Update(GameTime time) {
+            this.Update(time.ElapsedGameTime);
+        }
+
+        /// <inheritdoc cref="SpriteAnimation.Update(TimeSpan)"/>
+        public void Update(TimeSpan elapsed) {
             this.FindAnimationToPlay();
             if (this.CurrAnimation != null)
-                this.CurrAnimation.Animation.Update(time);
+                this.CurrAnimation.Animation.Update(elapsed);
         }
 
         /// <summary>