[bugfix] Fixed issue where playing backwards a tween that was complete caused errors in case the first update timeStep completely rewinded it

UnityTests.Unity5/Assets/_Tests/Bugs/IndexOutOfRange02.cs

@@ -17,7 +17,7 @@ public class IndexOutOfRange02 : BrainBase
 		foreach (Transform t in targets) t.DOMoveX(10, 10).Play();
 		yield return new WaitForSeconds(2);
 
-		// DOTween.Clear(true);
+		DOTween.Clear(true);
 	}
 
 	void OnDestroy()

UnityTests.Unity5/Assets/_Tests/Bugs/IndexOutOfRange03.cs

@@ -0,0 +1,24 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using DG.Tweening;
+
+public class IndexOutOfRange03 : MonoBehaviour
+{
+	public GameObject prefab;
+
+	IEnumerator Start()
+	{
+		DOTween.Init(true);
+
+		for (int i = 0; i < 100; ++i) {
+			GameObject go = Instantiate(prefab);
+			go.transform.DOMoveX(2, 4);
+		}
+
+		yield return new WaitForSeconds(2);
+
+		Debug.Log("Complete all");
+		DOTween.CompleteAll();
+	}
+}

UnityTests.Unity5/Assets/_Tests/Bugs/IndexOutOfRange03.cs.meta

@@ -0,0 +1,12 @@
+fileFormatVersion: 2
+guid: 5bf4bbdeeee14c44a88191908dbef3fa
+timeCreated: 1482833958
+licenseType: Pro
+MonoImporter:
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

UnityTests.Unity5/Assets/_Tests/Bugs/IndexOutOfRange03.unity.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 98991aed6c56e2e4e9b15b4455e150a9
+timeCreated: 1481284574
+licenseType: Pro
+DefaultImporter:
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

UnityTests.Unity5/Assets/_Tests/TempTests.cs

@@ -13,24 +13,16 @@ public class TempTests : BrainBase
 {
 	public Transform target;
 
-	Sequence sequence;
-
-    void Start()
+    IEnumerator Start()
     {
-    	sequence = DOTween.Sequence();
-		sequence.Append(target.DORotate(new Vector3(0,45f,0), 1f).SetEase(Ease.InOutCubic));
-		sequence.AppendInterval(2f);
-		sequence.SetLoops(-1, LoopType.Incremental);
-		sequence.SetRelative(true);
-    }
+    	Tween t = target.DORotate(new Vector3(0, 0, 90), 0.5f, RotateMode.LocalAxisAdd).SetEase(Ease.Linear)
+    		.SetAutoKill(false).Pause();
+    	t.SetUpdate(true);
+    	t.OnUpdate(()=> Debug.Log("UPDATE " + t.Elapsed() + "/" + t.IsPlaying()));
+    	yield return new WaitForSeconds(0.5f);
 
-    public void Pause()
-    {
-    	sequence.Pause();
-    }
-
-    public void Kil()
-    {
-    	sequence.Kill();
+    	t.Complete();
+    	// t.Rewind();
+    	t.PlayBackwards();
     }
 }

_DOTween.Assembly/DOTween/Core/TweenManager.cs

@@ -385,10 +385,24 @@ namespace DG.Tweening.Core
                 } else {
                     if (t.isBackwards) {
                         toPosition -= tDeltaTime;
-                        while (toPosition < 0 && toCompletedLoops > 0) {
+                        while (toPosition < 0 && toCompletedLoops > -1) {
                             toPosition += t.duration;
                             toCompletedLoops--;
                         }
+                        if (toCompletedLoops < 0 || wasEndPosition && toCompletedLoops < 1) {
+                            // Result is equivalent to a rewind, so set values according to it
+                            toPosition = 0;
+                            toCompletedLoops = wasEndPosition ? 1 : 0;
+                        }
+//                        while (toPosition < 0 && toCompletedLoops > 0) {
+//                            toPosition += t.duration;
+//                            toCompletedLoops--;
+//                        }
+//                        if (wasEndPosition && toCompletedLoops <= 0) {
+//                            // Force-rewind
+//                            Rewind(t, false);
+//                            continue;
+//                        }
                     } else {
                         toPosition += tDeltaTime;
                         while (toPosition >= t.duration && (t.loops == -1 || toCompletedLoops < t.loops)) {

_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 = "1.1.530";
+        public static readonly string Version = "1.1.540";
 
         ///////////////////////////////////////////////
         // Options ////////////////////////////////////