Fix for Flash ease not appearing fluid when moving slowly

UnityCompatibilityTests.Unity35/Assets/Demigiant/DOTween/DOTween.XML

@@ -2040,16 +2040,16 @@
             <summary>Sets the ease of the tween.
             <para>If applied to Sequences eases the whole sequence animation</para></summary>
             <param name="overshoot">
-            Eventual overshoot to use with Back or Flash ease (default is 1.70158).
+            Eventual overshoot to use with Back or Flash ease (default is 1.70158 - 1 for Flash).
-            <para>In case of Flash ease it sets the total number of flashes that will happen.
+            <para>In case of Flash ease it must be an intenger and sets the total number of flashes that will happen.
             Using an even number will complete the tween on the starting value, while an odd one will complete it on the end value.</para>
             </param>
         </member>
         <member name="M:DG.Tweening.TweenSettingsExtensions.SetEase``1(``0,DG.Tweening.Ease,System.Single,System.Single)">
             <summary>Sets the ease of the tween.
             <para>If applied to Sequences eases the whole sequence animation</para></summary>
-            <param name="amplitude">Eventual amplitude to use with Elastic easeType or overshoot to use with Flash easeType (default is 1.70158).
+            <param name="amplitude">Eventual amplitude to use with Elastic easeType or overshoot to use with Flash easeType (default is 1.70158 - 1 for Flash).
-            <para>In case of Flash ease it sets the total number of flashes that will happen.
+            <para>In case of Flash ease it must be an integer and sets the total number of flashes that will happen.
             Using an even number will complete the tween on the starting value, while an odd one will complete it on the end value.</para>
             </param>
             <param name="period">Eventual period to use with Elastic or Flash easeType (default is 0).

UnityTests.Unity4/Assets/Demigiant/DOTween/DOTween.XML

@@ -2040,16 +2040,16 @@
             <summary>Sets the ease of the tween.
             <para>If applied to Sequences eases the whole sequence animation</para></summary>
             <param name="overshoot">
-            Eventual overshoot to use with Back or Flash ease (default is 1.70158).
+            Eventual overshoot to use with Back or Flash ease (default is 1.70158 - 1 for Flash).
-            <para>In case of Flash ease it sets the total number of flashes that will happen.
+            <para>In case of Flash ease it must be an intenger and sets the total number of flashes that will happen.
             Using an even number will complete the tween on the starting value, while an odd one will complete it on the end value.</para>
             </param>
         </member>
         <member name="M:DG.Tweening.TweenSettingsExtensions.SetEase``1(``0,DG.Tweening.Ease,System.Single,System.Single)">
             <summary>Sets the ease of the tween.
             <para>If applied to Sequences eases the whole sequence animation</para></summary>
-            <param name="amplitude">Eventual amplitude to use with Elastic easeType or overshoot to use with Flash easeType (default is 1.70158).
+            <param name="amplitude">Eventual amplitude to use with Elastic easeType or overshoot to use with Flash easeType (default is 1.70158 - 1 for Flash).
-            <para>In case of Flash ease it sets the total number of flashes that will happen.
+            <para>In case of Flash ease it must be an integer and sets the total number of flashes that will happen.
             Using an even number will complete the tween on the starting value, while an odd one will complete it on the end value.</para>
             </param>
             <param name="period">Eventual period to use with Elastic or Flash easeType (default is 0).

UnityTests.Unity5/Assets/Demigiant/DOTween/DOTween.XML

@@ -2040,16 +2040,16 @@
             <summary>Sets the ease of the tween.
             <para>If applied to Sequences eases the whole sequence animation</para></summary>
             <param name="overshoot">
-            Eventual overshoot to use with Back or Flash ease (default is 1.70158).
+            Eventual overshoot to use with Back or Flash ease (default is 1.70158 - 1 for Flash).
-            <para>In case of Flash ease it sets the total number of flashes that will happen.
+            <para>In case of Flash ease it must be an intenger and sets the total number of flashes that will happen.
             Using an even number will complete the tween on the starting value, while an odd one will complete it on the end value.</para>
             </param>
         </member>
         <member name="M:DG.Tweening.TweenSettingsExtensions.SetEase``1(``0,DG.Tweening.Ease,System.Single,System.Single)">
             <summary>Sets the ease of the tween.
             <para>If applied to Sequences eases the whole sequence animation</para></summary>
-            <param name="amplitude">Eventual amplitude to use with Elastic easeType or overshoot to use with Flash easeType (default is 1.70158).
+            <param name="amplitude">Eventual amplitude to use with Elastic easeType or overshoot to use with Flash easeType (default is 1.70158 - 1 for Flash).
-            <para>In case of Flash ease it sets the total number of flashes that will happen.
+            <para>In case of Flash ease it must be an integer and sets the total number of flashes that will happen.
             Using an even number will complete the tween on the starting value, while an odd one will complete it on the end value.</para>
             </param>
             <param name="period">Eventual period to use with Elastic or Flash easeType (default is 0).

UnityTests.Unity5/Assets/_Tests/TempTests.cs

@@ -10,11 +10,15 @@ using UnityEngine.UI;
 public class TempTests : BrainBase
 {
     public Transform target;
+    public float duration = 8;
+    public Ease ease;
+    public float amplitude = 8;
+    public float period = 1;
 
     IEnumerator Start()
     {
     	yield return new WaitForSeconds(0.5f);
 
-    	target.DOMoveY(2, 5).SetRelative().SetEase(Ease.InOutFlash, 8, 1);
+    	target.DOMoveY(2, duration).SetRelative().SetEase(ease, amplitude, period);
     }
 }

_DOTween.Assembly/DOTween/Core/Easing/EaseManager.cs

@@ -345,5 +345,17 @@ namespace DG.Tweening.Core.Easing
                 return (float time, float duration, float overshootOrAmplitude, float period) => -(time /= duration) * (time - 2);
             }
         }
+
+        internal static bool IsFlashEase(Ease ease)
+        {
+            switch (ease) {
+            case Ease.Flash:
+            case Ease.InFlash:
+            case Ease.OutFlash:
+            case Ease.InOutFlash:
+                return true;
+            }
+            return false;
+        }
     }
 }

_DOTween.Assembly/DOTween/Core/Easing/Flash.cs

@@ -64,6 +64,10 @@ namespace DG.Tweening.Core.Easing
         {
             float easedRes = 0;
             float finalDecimals = 0;
+            // Use previous stepIndex in case of odd ones, so that back ease is not clamped
+            if (dir > 0 && (int)overshootOrAmplitude % 2 == 0) stepIndex++;
+            else if (dir < 0 && (int)overshootOrAmplitude % 2 != 0) stepIndex++;
+
             if (period > 0) {
                 float finalTruncated = (float)Math.Truncate(overshootOrAmplitude);
                 finalDecimals = overshootOrAmplitude - finalTruncated;

_DOTween.Assembly/DOTween/DOTween.cs

@@ -32,7 +32,7 @@ namespace DG.Tweening
     public class DOTween
     {
         /// <summary>DOTween's version</summary>
-        public static readonly string Version = "1.1.140";
+        public static readonly string Version = "1.1.145";
 
         ///////////////////////////////////////////////
         // Options ////////////////////////////////////

_DOTween.Assembly/DOTween/TweenSettingsExtensions.cs

@@ -121,14 +121,16 @@ namespace DG.Tweening
             if (t == null || !t.active) return t;
 
             t.easeType = ease;
+            if (EaseManager.IsFlashEase(ease)) t.easeOvershootOrAmplitude = (int)t.easeOvershootOrAmplitude;
+            
             t.customEase = null;
             return t;
         }
         /// <summary>Sets the ease of the tween.
         /// <para>If applied to Sequences eases the whole sequence animation</para></summary>
         /// <param name="overshoot">
-        /// Eventual overshoot to use with Back or Flash ease (default is 1.70158).
+        /// Eventual overshoot to use with Back or Flash ease (default is 1.70158 - 1 for Flash).
-        /// <para>In case of Flash ease it sets the total number of flashes that will happen.
+        /// <para>In case of Flash ease it must be an intenger and sets the total number of flashes that will happen.
         /// Using an even number will complete the tween on the starting value, while an odd one will complete it on the end value.</para>
         /// </param>
         public static T SetEase<T>(this T t, Ease ease, float overshoot) where T : Tween
@@ -136,14 +138,15 @@ namespace DG.Tweening
             if (t == null || !t.active) return t;
 
             t.easeType = ease;
+            if (EaseManager.IsFlashEase(ease)) overshoot = (int)overshoot;
             t.easeOvershootOrAmplitude = overshoot;
             t.customEase = null;
             return t;
         }
         /// <summary>Sets the ease of the tween.
         /// <para>If applied to Sequences eases the whole sequence animation</para></summary>
-        /// <param name="amplitude">Eventual amplitude to use with Elastic easeType or overshoot to use with Flash easeType (default is 1.70158).
+        /// <param name="amplitude">Eventual amplitude to use with Elastic easeType or overshoot to use with Flash easeType (default is 1.70158 - 1 for Flash).
-        /// <para>In case of Flash ease it sets the total number of flashes that will happen.
+        /// <para>In case of Flash ease it must be an integer and sets the total number of flashes that will happen.
         /// Using an even number will complete the tween on the starting value, while an odd one will complete it on the end value.</para>
         /// </param>
         /// <param name="period">Eventual period to use with Elastic or Flash easeType (default is 0).
@@ -155,6 +158,7 @@ namespace DG.Tweening
             if (t == null || !t.active) return t;
 
             t.easeType = ease;
+            if (EaseManager.IsFlashEase(ease)) amplitude = (int)amplitude;
             t.easeOvershootOrAmplitude = amplitude;
             t.easePeriod = period;
             t.customEase = null;

_DOTween.Assembly/bin/DOTween.XML

@@ -2040,16 +2040,16 @@
             <summary>Sets the ease of the tween.
             <para>If applied to Sequences eases the whole sequence animation</para></summary>
             <param name="overshoot">
-            Eventual overshoot to use with Back or Flash ease (default is 1.70158).
+            Eventual overshoot to use with Back or Flash ease (default is 1.70158 - 1 for Flash).
-            <para>In case of Flash ease it sets the total number of flashes that will happen.
+            <para>In case of Flash ease it must be an intenger and sets the total number of flashes that will happen.
             Using an even number will complete the tween on the starting value, while an odd one will complete it on the end value.</para>
             </param>
         </member>
         <member name="M:DG.Tweening.TweenSettingsExtensions.SetEase``1(``0,DG.Tweening.Ease,System.Single,System.Single)">
             <summary>Sets the ease of the tween.
             <para>If applied to Sequences eases the whole sequence animation</para></summary>
-            <param name="amplitude">Eventual amplitude to use with Elastic easeType or overshoot to use with Flash easeType (default is 1.70158).
+            <param name="amplitude">Eventual amplitude to use with Elastic easeType or overshoot to use with Flash easeType (default is 1.70158 - 1 for Flash).
-            <para>In case of Flash ease it sets the total number of flashes that will happen.
+            <para>In case of Flash ease it must be an integer and sets the total number of flashes that will happen.
             Using an even number will complete the tween on the starting value, while an odd one will complete it on the end value.</para>
             </param>
             <param name="period">Eventual period to use with Elastic or Flash easeType (default is 0).