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IndexOutOfRangeException error without any reason

Discussion in 'Entity Component System' started by Michelle_Ca, May 27, 2020.

  1. Michelle_Ca

    Michelle_Ca

    Joined:
    Aug 19, 2019
    Posts:
    113
    Hi,please can someone tell me why this error happened, and what does it mean?

    IndexOutOfRangeException: Index 23 is out of range of '23' Length.
    Unity.Collections.NativeArray`1[T].FailOutOfRangeError (System.Int32 index) (at <94c5f4c38cdc42d2b006f8badef04394>:0)
    Unity.Collections.NativeArray`1[T].CheckElementReadAccess (System.Int32 index) (at <94c5f4c38cdc42d2b006f8badef04394>:0)
    Unity.Collections.NativeArray`1[T].get_Item (System.Int32 index) (at <94c5f4c38cdc42d2b006f8badef04394>:0)
    Unity.Entities.Editor.EntityArrayListAdapter+Enumerator.UpdateIndexInChunk () (at Library/PackageCache/com.unity.entities@0.6.0-preview.24/Unity.Entities.Editor/EntityDebugger/EntityArrayListAdapter.cs:58)
    Unity.Entities.Editor.EntityArrayListAdapter+Enumerator.MoveToIndex (System.Int32 newLinearIndex) (at Library/PackageCache/com.unity.entities@0.6.0-preview.24/Unity.Entities.Editor/EntityDebugger/EntityArrayListAdapter.cs:68)
    Unity.Entities.Editor.EntityArrayListAdapter.get_Item (System.Int32 linearIndex) (at Library/PackageCache/com.unity.entities@0.6.0-preview.24/Unity.Entities.Editor/EntityDebugger/EntityArrayListAdapter.cs:132)
    UnityEditor.IMGUI.Controls.TreeViewDataSource.GetItem (System.Int32 row) (at <9a184ab867bb42c296d20ace04f48df3>:0)
    UnityEditor.IMGUI.Controls.TreeViewController.IterateVisibleItems (System.Int32 firstRow, System.Int32 numVisibleRows, System.Single rowWidth, System.Boolean hasFocus) (at <9a184ab867bb42c296d20ace04f48df3>:0)
    UnityEditor.IMGUI.Controls.TreeViewController.OnGUI (UnityEngine.Rect rect, System.Int32 keyboardControlID) (at <9a184ab867bb42c296d20ace04f48df3>:0)
    UnityEditor.IMGUI.Controls.TreeView.TreeViewWithMultiColumnHeader (UnityEngine.Rect rect) (at <9a184ab867bb42c296d20ace04f48df3>:0)
    UnityEditor.IMGUI.Controls.TreeView.OnGUI (UnityEngine.Rect rect) (at <9a184ab867bb42c296d20ace04f48df3>:0)
    Unity.Entities.Editor.EntityDebugger.EntityList () (at Library/PackageCache/com.unity.entities@0.6.0-preview.24/Unity.Entities.Editor/EntityDebugger/EntityDebugger.cs:487)
    Unity.Entities.Editor.EntityDebugger.OnGUI () (at Library/PackageCache/com.unity.entities@0.6.0-preview.24/Unity.Entities.Editor/EntityDebugger/EntityDebugger.cs:567)
    System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at <437ba245d8404784b9fbab9b439ac908>:0)
    Rethrow as TargetInvocationException: Exception has been thrown by the target of an invocation.
    System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at <437ba245d8404784b9fbab9b439ac908>:0)
    System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) (at <437ba245d8404784b9fbab9b439ac908>:0)
    UnityEditor.HostView.Invoke (System.String methodName, System.Object obj) (at <9a184ab867bb42c296d20ace04f48df3>:0)
    UnityEditor.HostView.Invoke (System.String methodName) (at <9a184ab867bb42c296d20ace04f48df3>:0)
    UnityEditor.HostView.InvokeOnGUI (UnityEngine.Rect onGUIPosition, UnityEngine.Rect viewRect) (at <9a184ab867bb42c296d20ace04f48df3>:0)
    UnityEditor.DockArea.DrawView (UnityEngine.Rect viewRect, UnityEngine.Rect dockAreaRect) (at <9a184ab867bb42c296d20ace04f48df3>:0)
    UnityEditor.DockArea.OldOnGUI () (at <9a184ab867bb42c296d20ace04f48df3>:0)
    UnityEngine.UIElements.IMGUIContainer.DoOnGUI (UnityEngine.Event evt, UnityEngine.Matrix4x4 parentTransform, UnityEngine.Rect clippingRect, System.Boolean isComputingLayout, UnityEngine.Rect layoutSize, System.Boolean canAffectFocus) (at <57fa7f4ad1c34ed185465e0a9f71c244>:0)
    UnityEngine.UIElements.IMGUIContainer.HandleIMGUIEvent (UnityEngine.Event e, UnityEngine.Matrix4x4 worldTransform, UnityEngine.Rect clippingRect, System.Boolean canAffectFocus) (at <57fa7f4ad1c34ed185465e0a9f71c244>:0)
    UnityEngine.UIElements.IMGUIContainer.HandleIMGUIEvent (UnityEngine.Event e, System.Boolean canAffectFocus) (at <57fa7f4ad1c34ed185465e0a9f71c244>:0)
    UnityEngine.UIElements.IMGUIContainer.SendEventToIMGUI (UnityEngine.UIElements.EventBase evt, System.Boolean canAffectFocus) (at <57fa7f4ad1c34ed185465e0a9f71c244>:0)
    UnityEngine.UIElements.IMGUIContainer.HandleEvent (UnityEngine.UIElements.EventBase evt) (at <57fa7f4ad1c34ed185465e0a9f71c244>:0)
    UnityEngine.UIElements.EventDispatchUtilities.PropagateEvent (UnityEngine.UIElements.EventBase evt) (at <57fa7f4ad1c34ed185465e0a9f71c244>:0)
    UnityEngine.UIElements.MouseEventDispatchingStrategy.DispatchEvent (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel) (at <57fa7f4ad1c34ed185465e0a9f71c244>:0)
    UnityEngine.UIElements.EventDispatcher.ProcessEvent (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel) (at <57fa7f4ad1c34ed185465e0a9f71c244>:0)
    UnityEngine.UIElements.EventDispatcher.ProcessEventQueue () (at <57fa7f4ad1c34ed185465e0a9f71c244>:0)
    UnityEngine.UIElements.EventDispatcher.OpenGate () (at <57fa7f4ad1c34ed185465e0a9f71c244>:0)
    UnityEngine.UIElements.EventDispatcherGate.Dispose () (at <57fa7f4ad1c34ed185465e0a9f71c244>:0)
    UnityEngine.UIElements.EventDispatcher.ProcessEvent (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel) (at <57fa7f4ad1c34ed185465e0a9f71c244>:0)
    UnityEngine.UIElements.EventDispatcher.Dispatch (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel, UnityEngine.UIElements.DispatchMode dispatchMode) (at <57fa7f4ad1c34ed185465e0a9f71c244>:0)
    UnityEngine.UIElements.BaseVisualElementPanel.SendEvent (UnityEngine.UIElements.EventBase e, UnityEngine.UIElements.DispatchMode dispatchMode) (at <57fa7f4ad1c34ed185465e0a9f71c244>:0)
    UnityEngine.UIElements.UIElementsUtility.DoDispatch (UnityEngine.UIElements.BaseVisualElementPanel panel) (at <57fa7f4ad1c34ed185465e0a9f71c244>:0)
    UnityEngine.UIElements.UIElementsUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr) (at <57fa7f4ad1c34ed185465e0a9f71c244>:0)
    UnityEngine.GUIUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr) (at <59837000ebf54955a9cb1d31caa86097>:0)
     
    Michelle_Ca, May 27, 2020
    #1

  2. UnconventionalWarfare

    UnconventionalWarfare

    Joined:
    Jul 11, 2019
    Posts:
    23
    Your NativeArray has 23 elements. The first one is 0 and the last one is 22. Array[23] would be the 24th element, which doesn't exist.
     
    UnconventionalWarfare, May 27, 2020
    #2
    Michelle_Ca likes this.

  3. Michelle_Ca

    Michelle_Ca

    Joined:
    Aug 19, 2019
    Posts:
    113
    yes but i dont have a NativeArray with 23 elements,i don’t know why this error appears and it always says Index 23 is out of range of '23' Length regardless of entities number in the scene
     
    Michelle_Ca, May 27, 2020
    #3

  4. eizenhorn

    eizenhorn

    Joined:
    Oct 17, 2016
    Posts:
    2,655
    Does this error appear when EntityDebugger enabled with selected entity and you exit play mode? Because it's entity debugger UI error which doesn't affect any your gameplay logic.
     
    eizenhorn, May 27, 2020
    #4
    Michelle_Ca likes this.

  5. Michelle_Ca

    Michelle_Ca

    Joined:
    Aug 19, 2019
    Posts:
    113
    yes EntityDebugger enabled but the error appear during the play mode and there is no specific time, it just happens suddenly
     
    Michelle_Ca, May 27, 2020
    #5