Esempio n. 1
0
	public void CreateVariation(DynamicSoundGroup group, AudioClip clip) {
		var resourceFileName = string.Empty;
		if (group.bulkVariationMode == MasterAudio.AudioLocation.ResourceFile) {
			resourceFileName = DTGUIHelper.GetResourcePath(clip);
			if (string.IsNullOrEmpty(resourceFileName)) {
				resourceFileName = clip.name;
			}
		}
		
		var clipName = clip.name;
		
		if (group.transform.FindChild(clipName) != null) {
			DTGUIHelper.ShowAlert("You already have a Variation for this Group named '" + clipName + "'. \n\nPlease rename these Variations when finished to be unique, or you may not be able to play them by name if you have a need to.");
		}
		
		var newVar = (GameObject) GameObject.Instantiate(_group.variationTemplate, _group.transform.position, Quaternion.identity);
		UndoHelper.CreateObjectForUndo(newVar, "create Variation");
		
		newVar.transform.name = clipName;
		newVar.transform.parent = group.transform;
		var variation = newVar.GetComponent<DynamicGroupVariation>();
		
		if (group.bulkVariationMode == MasterAudio.AudioLocation.ResourceFile) {
			variation.audLocation = MasterAudio.AudioLocation.ResourceFile;
			variation.resourceFileName = resourceFileName;
		} else {
			newVar.audio.clip = clip;
		}
	}
    private void CreateVariation(Transform aGroup, AudioClip aClip)
    {
        if (_creator.variationTemplate == null)
        {
            DTGUIHelper.ShowAlert("Your 'Variation Template' field is empty, please assign it in debug mode. Drag the 'DynamicGroupVariation' prefab from MasterAudio/Sources/Prefabs into that field, then switch back to normal mode.");
            return;
        }

        var resourceFileName = string.Empty;

        if (_creator.bulkVariationMode == MasterAudio.AudioLocation.ResourceFile)
        {
            resourceFileName = DTGUIHelper.GetResourcePath(aClip);
            if (string.IsNullOrEmpty(resourceFileName))
            {
                resourceFileName = aClip.name;
            }
        }

        var clipName = UtilStrings.TrimSpace(aClip.name);

        var myGroup = aGroup.GetComponent <DynamicSoundGroup>();

        var matches = myGroup.groupVariations.FindAll(delegate(DynamicGroupVariation obj) {
            return(obj.name == clipName);
        });

        if (matches.Count > 0)
        {
            DTGUIHelper.ShowAlert("You already have a variation for this Group named '" + clipName + "'. \n\nPlease rename these variations when finished to be unique, or you may not be able to play them by name if you have a need to.");
        }

        var spawnedVar = (GameObject)GameObject.Instantiate(_creator.variationTemplate, _creator.transform.position, Quaternion.identity);

        spawnedVar.name = clipName;

        spawnedVar.transform.parent = aGroup;

        var dynamicVar = spawnedVar.GetComponent <DynamicGroupVariation>();

        if (_creator.bulkVariationMode == MasterAudio.AudioLocation.ResourceFile)
        {
            dynamicVar.audLocation      = MasterAudio.AudioLocation.ResourceFile;
            dynamicVar.resourceFileName = resourceFileName;
        }
        else
        {
            dynamicVar.audio.clip = aClip;
        }
    }
    // ReSharper disable once FunctionComplexityOverflow
    public override void OnInspectorGUI()
    {
        EditorGUI.indentLevel = 0;
        var isDirty = false;

        _variation = (SoundGroupVariation)target;

        if (MasterAudioInspectorResources.LogoTexture != null)
        {
            DTGUIHelper.ShowHeaderTexture(MasterAudioInspectorResources.LogoTexture);
        }

        var parentGroup = _variation.ParentGroup;

        if (parentGroup == null)
        {
            DTGUIHelper.ShowLargeBarAlert("This file cannot be edited in Project View.");
            return;
        }

        AudioSource previewer;

        EditorGUILayout.BeginHorizontal(EditorStyles.toolbar);
        GUI.contentColor = DTGUIHelper.BrightButtonColor;
        if (GUILayout.Button(new GUIContent("Back to Group", "Select Group in Hierarchy"), EditorStyles.toolbarButton, GUILayout.Width(90)))
        {
            Selection.activeObject = _variation.transform.parent.gameObject;
        }
        GUILayout.FlexibleSpace();

        if (Application.isPlaying)
        {
            // ReSharper disable once ConvertIfStatementToConditionalTernaryExpression
            if (_variation.IsPlaying && _variation.VarAudio.clip != null)   // wait for Resource files to load
            {
                GUI.color = Color.green;

                var label = "Playing ({0}%)";

                if (AudioUtil.IsAudioPaused(_variation.VarAudio))
                {
                    GUI.color = Color.yellow;
                    label     = "Paused ({0}%)";
                }

                var percentagePlayed = (int)(_variation.VarAudio.time / _variation.VarAudio.clip.length * 100);

                EditorGUILayout.LabelField(string.Format(label, percentagePlayed),
                                           EditorStyles.miniButtonMid, GUILayout.Height(16), GUILayout.Width(240));

                _variation.frames++;
                isDirty = true;

                GUI.color = DTGUIHelper.BrightButtonColor;
                if (_variation.ObjectToFollow != null || _variation.ObjectToTriggerFrom != null)
                {
                    if (GUILayout.Button("Select Caller", EditorStyles.miniButton, GUILayout.Width(80)))
                    {
                        if (_variation.ObjectToFollow != null)
                        {
                            Selection.activeGameObject = _variation.ObjectToFollow.gameObject;
                        }
                        else
                        {
                            Selection.activeGameObject = _variation.ObjectToTriggerFrom.gameObject;
                        }
                    }
                }
            }
            else
            {
                GUI.color = Color.red;
                EditorGUILayout.LabelField("Not playing", EditorStyles.miniButtonMid, GUILayout.Height(16), GUILayout.Width(240));
            }
        }

        GUI.color        = Color.white;
        GUI.contentColor = Color.white;

        _ma = MasterAudio.Instance;
        var maInScene = _ma != null;

        var canPreview = !DTGUIHelper.IsPrefabInProjectView(_variation);

        if (maInScene)
        {
            var buttonPressed = DTGUIHelper.DTFunctionButtons.None;
            if (canPreview)
            {
                buttonPressed = DTGUIHelper.AddVariationButtons();
            }

            switch (buttonPressed)
            {
            case DTGUIHelper.DTFunctionButtons.Play:
                previewer = MasterAudioInspector.GetPreviewer();

                if (Application.isPlaying)
                {
                    MasterAudio.PlaySound3DAtVector3AndForget(_variation.ParentGroup.name, previewer.transform.position, 1f, null, 0f, _variation.name);
                }
                else
                {
                    isDirty = true;

                    var randPitch = GetRandomPreviewPitch(_variation);
                    var varVol    = GetRandomPreviewVolume(_variation);

                    if (_variation.audLocation != MasterAudio.AudioLocation.FileOnInternet)
                    {
                        if (previewer != null)
                        {
                            MasterAudioInspector.StopPreviewer();
                            previewer.pitch = randPitch;
                        }
                    }

                    var calcVolume = varVol * parentGroup.groupMasterVolume;

                    switch (_variation.audLocation)
                    {
                    case MasterAudio.AudioLocation.ResourceFile:
                        if (previewer != null)
                        {
                            var fileName = AudioResourceOptimizer.GetLocalizedFileName(_variation.useLocalization, _variation.resourceFileName);
                            previewer.PlayOneShot(Resources.Load(fileName) as AudioClip, calcVolume);
                        }
                        break;

                    case MasterAudio.AudioLocation.Clip:
                        if (previewer != null)
                        {
                            previewer.PlayOneShot(_variation.VarAudio.clip, calcVolume);
                        }
                        break;

                    case MasterAudio.AudioLocation.FileOnInternet:
                        if (!string.IsNullOrEmpty(_variation.internetFileUrl))
                        {
                            Application.OpenURL(_variation.internetFileUrl);
                        }
                        break;
                    }
                }
                break;

            case DTGUIHelper.DTFunctionButtons.Stop:
                if (Application.isPlaying)
                {
                    MasterAudio.StopAllOfSound(_variation.transform.parent.name);
                }
                else
                {
                    if (_variation.audLocation != MasterAudio.AudioLocation.FileOnInternet)
                    {
                        MasterAudioInspector.StopPreviewer();
                    }
                }
                break;
            }
        }

        EditorGUILayout.EndHorizontal();

        DTGUIHelper.HelpHeader("http://www.dtdevtools.com/docs/masteraudio/SoundGroupVariations.htm", "http://www.dtdevtools.com/API/masteraudio/class_dark_tonic_1_1_master_audio_1_1_sound_group_variation.html");

        if (maInScene && !Application.isPlaying)
        {
            DTGUIHelper.ShowColorWarning(MasterAudio.PreviewText);
        }

        var oldLocation = _variation.audLocation;

        EditorGUILayout.BeginHorizontal();
        if (!Application.isPlaying)
        {
            var newLocation =
                (MasterAudio.AudioLocation)EditorGUILayout.EnumPopup("Audio Origin", _variation.audLocation);

            if (newLocation != oldLocation)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Audio Origin");
                _variation.audLocation = newLocation;
            }
        }
        else
        {
            EditorGUILayout.LabelField("Audio Origin", _variation.audLocation.ToString());
        }
        DTGUIHelper.AddHelpIcon("http://www.dtdevtools.com/docs/masteraudio/SoundGroupVariations.htm#AudioOrigin");
        EditorGUILayout.EndHorizontal();

        switch (_variation.audLocation)
        {
        case MasterAudio.AudioLocation.Clip:
            var newClip = (AudioClip)EditorGUILayout.ObjectField("Audio Clip", _variation.VarAudio.clip, typeof(AudioClip), false);

            if (newClip != _variation.VarAudio.clip)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation.VarAudio, "assign Audio Clip");
                _variation.VarAudio.clip = newClip;
            }
            break;

        case MasterAudio.AudioLocation.FileOnInternet:
            if (oldLocation != _variation.audLocation)
            {
                if (_variation.VarAudio.clip != null)
                {
                    Debug.Log("Audio clip removed to prevent unnecessary memory usage on File On Internet Variation.");
                }
                _variation.VarAudio.clip = null;
            }

            if (!Application.isPlaying)
            {
                var newUrl = EditorGUILayout.TextField("Internet File URL", _variation.internetFileUrl);
                if (newUrl != _variation.internetFileUrl)
                {
                    AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Internet File URL");
                    _variation.internetFileUrl = newUrl;
                }
            }
            else
            {
                EditorGUILayout.LabelField("Internet File URL", _variation.internetFileUrl);
                switch (_variation.internetFileLoadStatus)
                {
                case MasterAudio.InternetFileLoadStatus.Loading:
                    DTGUIHelper.ShowLargeBarAlert("Attempting to download.");
                    break;

                case MasterAudio.InternetFileLoadStatus.Loaded:
                    DTGUIHelper.ShowColorWarning("Downloaded and ready to play.");
                    break;

                case MasterAudio.InternetFileLoadStatus.Failed:
                    DTGUIHelper.ShowRedError("Failed Download.");
                    break;
                }
            }

            if (string.IsNullOrEmpty(_variation.internetFileUrl))
            {
                DTGUIHelper.ShowLargeBarAlert("You have not specified a URL for the File On Internet. This Variation will not be available to play without one.");
            }
            break;

        case MasterAudio.AudioLocation.ResourceFile:
            if (oldLocation != _variation.audLocation)
            {
                if (_variation.VarAudio.clip != null)
                {
                    Debug.Log("Audio clip removed to prevent unnecessary memory usage on Resource file Variation.");
                }
                _variation.VarAudio.clip = null;
            }

            EditorGUILayout.BeginVertical();
            var anEvent = Event.current;

            GUI.color = DTGUIHelper.DragAreaColor;
            var dragArea = GUILayoutUtility.GetRect(0f, 20f, GUILayout.ExpandWidth(true));
            GUI.Box(dragArea, "Drag Resource Audio clip here to use its name!");
            GUI.color = Color.white;

            string newFilename;

            switch (anEvent.type)
            {
            case EventType.DragUpdated:
            case EventType.DragPerform:
                if (!dragArea.Contains(anEvent.mousePosition))
                {
                    break;
                }

                DragAndDrop.visualMode = DragAndDropVisualMode.Copy;

                if (anEvent.type == EventType.DragPerform)
                {
                    DragAndDrop.AcceptDrag();

                    foreach (var dragged in DragAndDrop.objectReferences)
                    {
                        // ReSharper disable once ExpressionIsAlwaysNull
                        var aClip = dragged as AudioClip;
                        // ReSharper disable once ConditionIsAlwaysTrueOrFalse
                        if (aClip == null)
                        {
                            continue;
                        }

                        // ReSharper disable HeuristicUnreachableCode
                        var useLocalization = false;
                        newFilename = DTGUIHelper.GetResourcePath(aClip, ref useLocalization);
                        if (string.IsNullOrEmpty(newFilename))
                        {
                            newFilename = aClip.name;
                        }

                        AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Resource filename");
                        _variation.resourceFileName = newFilename;
                        _variation.useLocalization  = useLocalization;
                        break;
                        // ReSharper restore HeuristicUnreachableCode
                    }
                }
                Event.current.Use();
                break;
            }
            EditorGUILayout.EndVertical();

            newFilename = EditorGUILayout.TextField("Resource Filename", _variation.resourceFileName);
            if (newFilename != _variation.resourceFileName)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Resource filename");
                _variation.resourceFileName = newFilename;
            }

            EditorGUI.indentLevel = 1;

            var newLocal = EditorGUILayout.Toggle("Use Localized Folder", _variation.useLocalization);
            if (newLocal != _variation.useLocalization)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "toggle Use Localized Folder");
                _variation.useLocalization = newLocal;
            }

            break;
        }

        EditorGUI.indentLevel = 0;

        var newProbability = EditorGUILayout.IntSlider("Probability to Play (%)", _variation.probabilityToPlay, 0, 100);

        if (newProbability != _variation.probabilityToPlay)
        {
            AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Probability to Play (%)");
            _variation.probabilityToPlay = newProbability;
        }

        if (_variation.probabilityToPlay < 100)
        {
            DTGUIHelper.ShowLargeBarAlert("Since Probability to Play is less than 100%, you will not always hear this Variation when it's selected to play.");
        }

        var newVolume = DTGUIHelper.DisplayVolumeField(_variation.VarAudio.volume, DTGUIHelper.VolumeFieldType.None, MasterAudio.MixerWidthMode.Normal, 0f, true);

        if (newVolume != _variation.VarAudio.volume)
        {
            AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation.VarAudio, "change Volume");
            _variation.VarAudio.volume = newVolume;
        }

        var newPitch = DTGUIHelper.DisplayPitchField(_variation.VarAudio.pitch);

        if (newPitch != _variation.VarAudio.pitch)
        {
            AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation.VarAudio, "change Pitch");
            _variation.VarAudio.pitch = newPitch;
        }

        if (parentGroup.curVariationMode == MasterAudioGroup.VariationMode.LoopedChain)
        {
            DTGUIHelper.ShowLargeBarAlert("Loop Clip is always OFF for Looped Chain Groups");
        }
        else
        {
            var newLoop = EditorGUILayout.Toggle("Loop Clip", _variation.VarAudio.loop);
            if (newLoop != _variation.VarAudio.loop)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation.VarAudio, "toggle Loop");
                _variation.VarAudio.loop = newLoop;
            }
        }

        EditorGUILayout.BeginHorizontal();
        var newWeight = EditorGUILayout.IntSlider("Voices (Weight)", _variation.weight, 0, 100);

        DTGUIHelper.AddHelpIcon("http://www.dtdevtools.com/docs/masteraudio/SoundGroupVariations.htm#Voices");
        EditorGUILayout.EndHorizontal();
        if (newWeight != _variation.weight)
        {
            AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Voices (Weight)");
            _variation.weight = newWeight;
        }

        var newFxTailTime = EditorGUILayout.Slider("FX Tail Time", _variation.fxTailTime, 0f, 10f);

        if (newFxTailTime != _variation.fxTailTime)
        {
            AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change FX Tail Time");
            _variation.fxTailTime = newFxTailTime;
        }

        var filterList = new List <string>()
        {
            MasterAudio.NoGroupName,
            "Low Pass",
            "High Pass",
            "Distortion",
            "Chorus",
            "Echo",
            "Reverb"
        };

        EditorGUILayout.BeginHorizontal();

        var newFilterIndex = EditorGUILayout.Popup("Add Filter Effect", 0, filterList.ToArray());

        DTGUIHelper.AddHelpIcon("http://www.dtdevtools.com/docs/masteraudio/FilterFX.htm");
        EditorGUILayout.EndHorizontal();

        switch (newFilterIndex)
        {
        case 1:
            AddFilterComponent(typeof(AudioLowPassFilter));
            break;

        case 2:
            AddFilterComponent(typeof(AudioHighPassFilter));
            break;

        case 3:
            AddFilterComponent(typeof(AudioDistortionFilter));
            break;

        case 4:
            AddFilterComponent(typeof(AudioChorusFilter));
            break;

        case 5:
            AddFilterComponent(typeof(AudioEchoFilter));
            break;

        case 6:
            AddFilterComponent(typeof(AudioReverbFilter));
            break;
        }

        DTGUIHelper.StartGroupHeader();
        var newUseRndPitch = EditorGUILayout.BeginToggleGroup(" Use Random Pitch", _variation.useRandomPitch);

        if (newUseRndPitch != _variation.useRandomPitch)
        {
            AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "toggle Use Random Pitch");
            _variation.useRandomPitch = newUseRndPitch;
        }

        DTGUIHelper.EndGroupHeader();

        if (_variation.useRandomPitch)
        {
            var newMode = (SoundGroupVariation.RandomPitchMode)EditorGUILayout.EnumPopup("Pitch Compute Mode", _variation.randomPitchMode);
            if (newMode != _variation.randomPitchMode)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Pitch Compute Mode");
                _variation.randomPitchMode = newMode;
            }

            var newPitchMin = DTGUIHelper.DisplayPitchField(_variation.randomPitchMin, "Random Pitch Min");
            if (newPitchMin != _variation.randomPitchMin)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Random Pitch Min");
                _variation.randomPitchMin = newPitchMin;
                if (_variation.randomPitchMax <= _variation.randomPitchMin)
                {
                    _variation.randomPitchMax = _variation.randomPitchMin;
                }
            }

            var newPitchMax = DTGUIHelper.DisplayPitchField(_variation.randomPitchMax, "Random Pitch Max");
            if (newPitchMax != _variation.randomPitchMax)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Random Pitch Max");
                _variation.randomPitchMax = newPitchMax;
                if (_variation.randomPitchMin > _variation.randomPitchMax)
                {
                    _variation.randomPitchMin = _variation.randomPitchMax;
                }
            }
        }

        EditorGUILayout.EndToggleGroup();
        DTGUIHelper.AddSpaceForNonU5(2);

        DTGUIHelper.StartGroupHeader();

        var newUseRndVol = EditorGUILayout.BeginToggleGroup(" Use Random Volume", _variation.useRandomVolume);

        if (newUseRndVol != _variation.useRandomVolume)
        {
            AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "toggle Use Random Volume");
            _variation.useRandomVolume = newUseRndVol;
        }

        DTGUIHelper.EndGroupHeader();

        if (_variation.useRandomVolume)
        {
            var newMode = (SoundGroupVariation.RandomVolumeMode)EditorGUILayout.EnumPopup("Volume Compute Mode", _variation.randomVolumeMode);
            if (newMode != _variation.randomVolumeMode)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Volume Compute Mode");
                _variation.randomVolumeMode = newMode;
            }

            var volMin = 0f;
            if (_variation.randomVolumeMode == SoundGroupVariation.RandomVolumeMode.AddToClipVolume)
            {
                volMin = -1f;
            }

            var newVolMin = DTGUIHelper.DisplayVolumeField(_variation.randomVolumeMin, DTGUIHelper.VolumeFieldType.None, MasterAudio.MixerWidthMode.Normal, volMin, true, "Random Volume Min");
            if (newVolMin != _variation.randomVolumeMin)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Random Volume Min");
                _variation.randomVolumeMin = newVolMin;
                if (_variation.randomVolumeMax <= _variation.randomVolumeMin)
                {
                    _variation.randomVolumeMax = _variation.randomVolumeMin;
                }
            }

            var newVolMax = DTGUIHelper.DisplayVolumeField(_variation.randomVolumeMax, DTGUIHelper.VolumeFieldType.None, MasterAudio.MixerWidthMode.Normal, volMin, true, "Random Volume Max");
            if (newVolMax != _variation.randomVolumeMax)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Random Volume Max");
                _variation.randomVolumeMax = newVolMax;
                if (_variation.randomVolumeMin > _variation.randomVolumeMax)
                {
                    _variation.randomVolumeMin = _variation.randomVolumeMax;
                }
            }
        }

        EditorGUILayout.EndToggleGroup();
        DTGUIHelper.AddSpaceForNonU5(2);

        DTGUIHelper.StartGroupHeader();

        var newSilence = EditorGUILayout.BeginToggleGroup(" Use Random Delay", _variation.useIntroSilence);

        if (newSilence != _variation.useIntroSilence)
        {
            AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "toggle Use Random Delay");
            _variation.useIntroSilence = newSilence;
        }
        DTGUIHelper.EndGroupHeader();

        if (_variation.useIntroSilence)
        {
            var newSilenceMin = EditorGUILayout.Slider("Delay Min (sec)", _variation.introSilenceMin, 0f, 100f);
            if (newSilenceMin != _variation.introSilenceMin)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Delay Min (sec)");
                _variation.introSilenceMin = newSilenceMin;
                if (_variation.introSilenceMin > _variation.introSilenceMax)
                {
                    _variation.introSilenceMax = newSilenceMin;
                }
            }

            var newSilenceMax = EditorGUILayout.Slider("Delay Max (sec)", _variation.introSilenceMax, 0f, 100f);
            if (newSilenceMax != _variation.introSilenceMax)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Delay Max (sec)");
                _variation.introSilenceMax = newSilenceMax;
                if (_variation.introSilenceMax < _variation.introSilenceMin)
                {
                    _variation.introSilenceMin = newSilenceMax;
                }
            }
        }

        EditorGUILayout.EndToggleGroup();
        DTGUIHelper.AddSpaceForNonU5(2);

        DTGUIHelper.StartGroupHeader();

        var newStart = EditorGUILayout.BeginToggleGroup(" Use Random Start Position", _variation.useRandomStartTime);

        if (newStart != _variation.useRandomStartTime)
        {
            AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "toggle Use Random Start Position");
            _variation.useRandomStartTime = newStart;
        }
        DTGUIHelper.EndGroupHeader();

        if (_variation.useRandomStartTime)
        {
            var newMin = EditorGUILayout.Slider("Start Min (%)", _variation.randomStartMinPercent, 0f, 100f);
            if (newMin != _variation.randomStartMinPercent)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "toggle Start Min (%)");
                _variation.randomStartMinPercent = newMin;
                if (_variation.randomStartMaxPercent <= _variation.randomStartMinPercent)
                {
                    _variation.randomStartMaxPercent = _variation.randomStartMinPercent;
                }
            }

            var newMax = EditorGUILayout.Slider("Start Max (%)", _variation.randomStartMaxPercent, 0f, 100f);
            if (newMax != _variation.randomStartMaxPercent)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "toggle Start Max (%)");
                _variation.randomStartMaxPercent = newMax;
                if (_variation.randomStartMinPercent > _variation.randomStartMaxPercent)
                {
                    _variation.randomStartMinPercent = _variation.randomStartMaxPercent;
                }
            }
        }

        EditorGUILayout.EndToggleGroup();
        DTGUIHelper.AddSpaceForNonU5(2);

        DTGUIHelper.StartGroupHeader();
        var newUseFades = EditorGUILayout.BeginToggleGroup(" Use Custom Fading", _variation.useFades);

        if (newUseFades != _variation.useFades)
        {
            AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "toggle Use Custom Fading");
            _variation.useFades = newUseFades;
        }
        DTGUIHelper.EndGroupHeader();

        if (_variation.useFades)
        {
            var newFadeIn = EditorGUILayout.Slider("Fade In Time (sec)", _variation.fadeInTime, 0f, 10f);
            if (newFadeIn != _variation.fadeInTime)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Fade In Time");
                _variation.fadeInTime = newFadeIn;
            }

            if (_variation.VarAudio.loop)
            {
                DTGUIHelper.ShowColorWarning("Looped clips cannot have a custom fade out.");
            }
            else
            {
                var newFadeOut = EditorGUILayout.Slider("Fade Out time (sec)", _variation.fadeOutTime, 0f, 10f);
                if (newFadeOut != _variation.fadeOutTime)
                {
                    AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Fade Out Time");
                    _variation.fadeOutTime = newFadeOut;
                }
            }
        }

        EditorGUILayout.EndToggleGroup();

        if (GUI.changed || isDirty)
        {
            EditorUtility.SetDirty(target);
        }

        //DrawDefaultInspector();
    }
        // ReSharper disable once FunctionComplexityOverflow
        public override void OnInspectorGUI()
        {
            EditorGUI.indentLevel = 0;
            var isDirty = false;

            _variation = (SoundGroupVariation)target;

            if (MasterAudioInspectorResources.LogoTexture != null)
            {
                DTGUIHelper.ShowHeaderTexture(MasterAudioInspectorResources.LogoTexture);
            }

            var parentGroup = _variation.ParentGroup;

            if (parentGroup == null)
            {
                DTGUIHelper.ShowLargeBarAlert("This file cannot be edited in Project View.");
                return;
            }

            var         isVideoPlayersGroup = DTGUIHelper.IsVideoPlayersGroup(_variation.ParentGroup.name);
            AudioSource previewer;

            EditorGUILayout.BeginHorizontal(EditorStyles.toolbar);
            GUI.contentColor = DTGUIHelper.BrightButtonColor;
            if (GUILayout.Button(new GUIContent("Back to Group", "Select Group in Hierarchy"), EditorStyles.toolbarButton, GUILayout.Width(90)))
            {
                Selection.activeObject = _variation.transform.parent.gameObject;
            }
            GUILayout.FlexibleSpace();

            if (Application.isPlaying)
            {
                if (isVideoPlayersGroup && DTMonoHelper.IsActive(_variation.gameObject))
                {
                    GUI.color = Color.green;
                    var label = "Playing";
                    EditorGUILayout.LabelField(label,
                                               EditorStyles.miniButtonMid, GUILayout.Height(16), GUILayout.Width(240));
                }
                else if (_variation.IsPlaying && _variation.VarAudio.clip != null)
                {
                    // wait for Resource files to load
                    GUI.color = Color.green;

                    var label = "Playing ({0}%)";

                    if (_variation.IsPaused)
                    {
                        GUI.color = Color.yellow;
                        label     = "Paused ({0}%)";
                    }

                    var percentagePlayed = (int)(_variation.VarAudio.time / _variation.VarAudio.clip.length * 100);

                    EditorGUILayout.LabelField(string.Format(label, percentagePlayed),
                                               EditorStyles.miniButtonMid, GUILayout.Height(16), GUILayout.Width(240));

                    _variation.frames++;
                    isDirty = true;

                    GUI.color = DTGUIHelper.BrightButtonColor;
                    if (_variation.ObjectToFollow != null || _variation.ObjectToTriggerFrom != null)
                    {
                        if (GUILayout.Button("Select Caller", EditorStyles.toolbarButton, GUILayout.Width(80)))
                        {
                            if (_variation.ObjectToFollow != null)
                            {
                                Selection.activeGameObject = _variation.ObjectToFollow.gameObject;
                            }
                            else
                            {
                                Selection.activeGameObject = _variation.ObjectToTriggerFrom.gameObject;
                            }
                        }
                    }
                }
                else
                {
                    GUI.color = Color.red;
                    EditorGUILayout.LabelField("Not playing", EditorStyles.miniButtonMid, GUILayout.Height(16), GUILayout.Width(240));
                }
            }

            GUI.color        = Color.white;
            GUI.contentColor = Color.white;

            _ma = MasterAudio.Instance;
            var maInScene = _ma != null;

            if (maInScene)
            {
                var buttonPressed = DTGUIHelper.AddVariationButtons();

                switch (buttonPressed)
                {
                case DTGUIHelper.DTFunctionButtons.Play:
                    if (DTGUIHelper.IsVideoPlayersGroup(_variation.ParentGroup.name))
                    {
                        break;
                    }

                    previewer = MasterAudioInspector.GetPreviewer();

                    if (Application.isPlaying)
                    {
                        MasterAudio.PlaySound3DAtVector3AndForget(_variation.ParentGroup.name, previewer.transform.position, 1f, null, 0f, _variation.name);
                    }
                    else
                    {
                        isDirty = true;

                        var randPitch = GetRandomPreviewPitch(_variation);
                        var varVol    = GetRandomPreviewVolume(_variation);

                        if (previewer != null)
                        {
                            MasterAudioInspector.StopPreviewer();
                            previewer.pitch = randPitch;
                        }

                        var calcVolume = varVol * parentGroup.groupMasterVolume;

                        switch (_variation.audLocation)
                        {
                        case MasterAudio.AudioLocation.ResourceFile:
                            if (previewer != null)
                            {
                                var fileName = AudioResourceOptimizer.GetLocalizedFileName(_variation.useLocalization, _variation.resourceFileName);
                                previewer.PlayOneShot(Resources.Load(fileName) as AudioClip, calcVolume);
                            }
                            break;

                        case MasterAudio.AudioLocation.Clip:
                            if (previewer != null)
                            {
                                previewer.PlayOneShot(_variation.VarAudio.clip, calcVolume);
                            }
                            break;

#if ADDRESSABLES_ENABLED
                        case MasterAudio.AudioLocation.Addressable:
                            DTGUIHelper.PreviewAddressable(_variation.audioClipAddressable, previewer, calcVolume);
                            break;
#endif
                        }
                    }
                    break;

                case DTGUIHelper.DTFunctionButtons.Stop:
                    if (DTGUIHelper.IsVideoPlayersGroup(_variation.ParentGroup.name))
                    {
                        break;
                    }

                    if (Application.isPlaying)
                    {
                        MasterAudio.StopAllOfSound(_variation.transform.parent.name);
                    }
                    else
                    {
                        MasterAudioInspector.StopPreviewer();
                    }
                    break;
                }
            }

            EditorGUILayout.EndHorizontal();

            DTGUIHelper.HelpHeader("http://www.dtdevtools.com/docs/masteraudio/SoundGroupVariations.htm", "http://www.dtdevtools.com/API/masteraudio/class_dark_tonic_1_1_master_audio_1_1_sound_group_variation.html");

            if (!isVideoPlayersGroup)
            {
                if (maInScene && !Application.isPlaying)
                {
                    DTGUIHelper.ShowColorWarning(MasterAudio.PreviewText);
                }

                if (!Application.isPlaying)
                {
                    var newAlias = EditorGUILayout.TextField("Clip Id (optional)", _variation.clipAlias);

                    if (newAlias != _variation.clipAlias)
                    {
                        AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Clip Id");
                        _variation.clipAlias = newAlias;
                    }
                }

                var oldLocation = _variation.audLocation;
                EditorGUILayout.BeginHorizontal();
                if (!Application.isPlaying)
                {
                    var newLocation =
                        (MasterAudio.AudioLocation)EditorGUILayout.EnumPopup("Audio Origin", _variation.audLocation);

                    if (newLocation != oldLocation)
                    {
                        AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Audio Origin");
                        _variation.audLocation = newLocation;
                    }
                }
                else
                {
                    EditorGUILayout.LabelField("Audio Origin", _variation.audLocation.ToString());
                }
                DTGUIHelper.AddHelpIconNoStyle("http://www.dtdevtools.com/docs/masteraudio/SoundGroupVariations.htm#AudioOrigin");
                EditorGUILayout.EndHorizontal();

                if (oldLocation != _variation.audLocation && oldLocation == MasterAudio.AudioLocation.Clip)
                {
                    if (_variation.VarAudio.clip != null)
                    {
                        Debug.Log("Audio clip removed to prevent unnecessary memory usage.");
                    }
                    _variation.VarAudio.clip = null;
                }

                switch (_variation.audLocation)
                {
                case MasterAudio.AudioLocation.Clip:
                    var newClip = (AudioClip)EditorGUILayout.ObjectField("Audio Clip", _variation.VarAudio.clip, typeof(AudioClip), false);

                    if (newClip != _variation.VarAudio.clip)
                    {
                        AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation.VarAudio, "assign Audio Clip");
                        _variation.VarAudio.clip = newClip;
                    }
                    break;

#if ADDRESSABLES_ENABLED
                case MasterAudio.AudioLocation.Addressable:
                    serializedObject.Update();
                    EditorGUILayout.PropertyField(serializedObject.FindProperty(nameof(SoundGroupVariation.audioClipAddressable)), true);
                    serializedObject.ApplyModifiedProperties();

                    if (!DTGUIHelper.IsAddressableTypeValid(_variation.audioClipAddressable, _variation.name))
                    {
                        _variation.audioClipAddressable = null;
                        isDirty = true;
                    }
                    break;
#endif
                case MasterAudio.AudioLocation.ResourceFile:
                    EditorGUILayout.BeginVertical();
                    var anEvent = Event.current;

                    GUI.color = DTGUIHelper.DragAreaColor;
                    var dragArea = GUILayoutUtility.GetRect(0f, 20f, GUILayout.ExpandWidth(true));
                    GUI.Box(dragArea, "Drag Resource Audio clip here to use its name!");
                    GUI.color = Color.white;

                    string newFilename;

                    switch (anEvent.type)
                    {
                    case EventType.DragUpdated:
                    case EventType.DragPerform:
                        if (!dragArea.Contains(anEvent.mousePosition))
                        {
                            break;
                        }

                        DragAndDrop.visualMode = DragAndDropVisualMode.Copy;

                        if (anEvent.type == EventType.DragPerform)
                        {
                            DragAndDrop.AcceptDrag();

                            foreach (var dragged in DragAndDrop.objectReferences)
                            {
                                // ReSharper disable once ExpressionIsAlwaysNull
                                var aClip = dragged as AudioClip;
                                // ReSharper disable once ConditionIsAlwaysTrueOrFalse
                                if (aClip == null)
                                {
                                    continue;
                                }

                                // ReSharper disable HeuristicUnreachableCode
                                var useLocalization = false;
                                newFilename = DTGUIHelper.GetResourcePath(aClip, ref useLocalization);
                                if (string.IsNullOrEmpty(newFilename))
                                {
                                    newFilename = aClip.name;
                                }

                                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Resource filename");
                                _variation.resourceFileName = newFilename;
                                _variation.useLocalization  = useLocalization;
                                break;
                                // ReSharper restore HeuristicUnreachableCode
                            }
                        }
                        Event.current.Use();
                        break;
                    }
                    EditorGUILayout.EndVertical();

                    newFilename = EditorGUILayout.TextField("Resource Filename", _variation.resourceFileName);
                    if (newFilename != _variation.resourceFileName)
                    {
                        AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Resource filename");
                        _variation.resourceFileName = newFilename;
                    }

                    EditorGUI.indentLevel = 1;

                    var newLocal = EditorGUILayout.Toggle("Use Localized Folder", _variation.useLocalization);
                    if (newLocal != _variation.useLocalization)
                    {
                        AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "toggle Use Localized Folder");
                        _variation.useLocalization = newLocal;
                    }

                    break;
                }

                EditorGUI.indentLevel = 0;

                var newProbability = EditorGUILayout.IntSlider("Probability to Play (%)", _variation.probabilityToPlay, 0, 100);
                if (newProbability != _variation.probabilityToPlay)
                {
                    AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Probability to Play (%)");
                    _variation.probabilityToPlay = newProbability;
                }

                if (_variation.probabilityToPlay < 100)
                {
                    DTGUIHelper.ShowLargeBarAlert("Since Probability to Play is less than 100%, you will not always hear this Variation when it's selected to play.");
                }
            }

            var newVolume = DTGUIHelper.DisplayVolumeField(_variation.VarAudio.volume, DTGUIHelper.VolumeFieldType.None, MasterAudio.MixerWidthMode.Normal, 0f, true);
            if (newVolume != _variation.VarAudio.volume)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation.VarAudio, "change Volume");
                _variation.VarAudio.volume = newVolume;
            }

            if (isVideoPlayersGroup)
            {
                DTGUIHelper.ShowColorWarning("This is the specially named Sound Group for Video Players. Most controls for this Sound Group cannot be used for Video Players and are hidden.");
            }

            if (!isVideoPlayersGroup)
            {
                var newPitch = DTGUIHelper.DisplayPitchField(_variation.VarAudio.pitch);
                if (newPitch != _variation.VarAudio.pitch)
                {
                    AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation.VarAudio, "change Pitch");
                    _variation.VarAudio.pitch = newPitch;
                }

                if (parentGroup.curVariationMode == MasterAudioGroup.VariationMode.LoopedChain)
                {
                    DTGUIHelper.ShowLargeBarAlert(MasterAudio.LoopDisabledLoopedChain);
                }
                else if (_variation.useRandomStartTime && _variation.randomEndPercent != 100f)
                {
                    DTGUIHelper.ShowLargeBarAlert(MasterAudio.LoopDisabledCustomEnd);
                }
                else
                {
                    var newLoop = EditorGUILayout.Toggle("Loop Clip", _variation.VarAudio.loop);
                    if (newLoop != _variation.VarAudio.loop)
                    {
                        AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation.VarAudio, "toggle Loop");
                        _variation.VarAudio.loop = newLoop;
                    }
                }

                EditorGUILayout.BeginHorizontal();
                var newWeight = EditorGUILayout.IntSlider("Voices (Weight)", _variation.weight, 0, 100);
                DTGUIHelper.AddHelpIconNoStyle("http://www.dtdevtools.com/docs/masteraudio/SoundGroupVariations.htm#Voices");
                EditorGUILayout.EndHorizontal();
                if (newWeight != _variation.weight)
                {
                    AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Voices (Weight)");
                    _variation.weight = newWeight;
                }

                DTGUIHelper.StartGroupHeader();
                var newUseRndPitch = EditorGUILayout.BeginToggleGroup(" Use Random Pitch", _variation.useRandomPitch);
                if (newUseRndPitch != _variation.useRandomPitch)
                {
                    AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "toggle Use Random Pitch");
                    _variation.useRandomPitch = newUseRndPitch;
                }

                DTGUIHelper.EndGroupHeader();

                if (_variation.useRandomPitch)
                {
                    var newMode = (SoundGroupVariation.RandomPitchMode)EditorGUILayout.EnumPopup("Pitch Compute Mode", _variation.randomPitchMode);
                    if (newMode != _variation.randomPitchMode)
                    {
                        AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Pitch Compute Mode");
                        _variation.randomPitchMode = newMode;
                    }

                    var newPitchMin = DTGUIHelper.DisplayPitchField(_variation.randomPitchMin, "Random Pitch Min");
                    if (newPitchMin != _variation.randomPitchMin)
                    {
                        AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Random Pitch Min");
                        _variation.randomPitchMin = newPitchMin;
                        if (_variation.randomPitchMax <= _variation.randomPitchMin)
                        {
                            _variation.randomPitchMax = _variation.randomPitchMin;
                        }
                    }

                    var newPitchMax = DTGUIHelper.DisplayPitchField(_variation.randomPitchMax, "Random Pitch Max");
                    if (newPitchMax != _variation.randomPitchMax)
                    {
                        AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Random Pitch Max");
                        _variation.randomPitchMax = newPitchMax;
                        if (_variation.randomPitchMin > _variation.randomPitchMax)
                        {
                            _variation.randomPitchMin = _variation.randomPitchMax;
                        }
                    }
                }

                EditorGUILayout.EndToggleGroup();

                DTGUIHelper.StartGroupHeader();

                var newUseRndVol = EditorGUILayout.BeginToggleGroup(" Use Random Volume", _variation.useRandomVolume);
                if (newUseRndVol != _variation.useRandomVolume)
                {
                    AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "toggle Use Random Volume");
                    _variation.useRandomVolume = newUseRndVol;
                }

                DTGUIHelper.EndGroupHeader();

                if (_variation.useRandomVolume)
                {
                    var newMode = (SoundGroupVariation.RandomVolumeMode)EditorGUILayout.EnumPopup("Volume Compute Mode", _variation.randomVolumeMode);
                    if (newMode != _variation.randomVolumeMode)
                    {
                        AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Volume Compute Mode");
                        _variation.randomVolumeMode = newMode;
                    }

                    var volMin = 0f;
                    if (_variation.randomVolumeMode == SoundGroupVariation.RandomVolumeMode.AddToClipVolume)
                    {
                        volMin = -1f;
                    }

                    var newVolMin = DTGUIHelper.DisplayVolumeField(_variation.randomVolumeMin, DTGUIHelper.VolumeFieldType.None, MasterAudio.MixerWidthMode.Normal, volMin, true, "Random Volume Min");
                    if (newVolMin != _variation.randomVolumeMin)
                    {
                        AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Random Volume Min");
                        _variation.randomVolumeMin = newVolMin;
                        if (_variation.randomVolumeMax <= _variation.randomVolumeMin)
                        {
                            _variation.randomVolumeMax = _variation.randomVolumeMin;
                        }
                    }

                    var newVolMax = DTGUIHelper.DisplayVolumeField(_variation.randomVolumeMax, DTGUIHelper.VolumeFieldType.None, MasterAudio.MixerWidthMode.Normal, volMin, true, "Random Volume Max");
                    if (newVolMax != _variation.randomVolumeMax)
                    {
                        AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Random Volume Max");
                        _variation.randomVolumeMax = newVolMax;
                        if (_variation.randomVolumeMin > _variation.randomVolumeMax)
                        {
                            _variation.randomVolumeMin = _variation.randomVolumeMax;
                        }
                    }
                }

                EditorGUILayout.EndToggleGroup();

                DTGUIHelper.StartGroupHeader();

                var newSilence = EditorGUILayout.BeginToggleGroup(" Use Random Delay", _variation.useIntroSilence);
                if (newSilence != _variation.useIntroSilence)
                {
                    AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "toggle Use Random Delay");
                    _variation.useIntroSilence = newSilence;
                }
                DTGUIHelper.EndGroupHeader();

                if (_variation.useIntroSilence)
                {
                    var newSilenceMin = EditorGUILayout.Slider("Delay Min (sec)", _variation.introSilenceMin, 0f, 100f);
                    if (newSilenceMin != _variation.introSilenceMin)
                    {
                        AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Delay Min (sec)");
                        _variation.introSilenceMin = newSilenceMin;
                        if (_variation.introSilenceMin > _variation.introSilenceMax)
                        {
                            _variation.introSilenceMax = newSilenceMin;
                        }
                    }

                    var newSilenceMax = EditorGUILayout.Slider("Delay Max (sec)", _variation.introSilenceMax, 0f, 100f);
                    if (newSilenceMax != _variation.introSilenceMax)
                    {
                        AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Delay Max (sec)");
                        _variation.introSilenceMax = newSilenceMax;
                        if (_variation.introSilenceMax < _variation.introSilenceMin)
                        {
                            _variation.introSilenceMin = newSilenceMax;
                        }
                    }
                }

                EditorGUILayout.EndToggleGroup();

                DTGUIHelper.StartGroupHeader();

                var newStart = EditorGUILayout.BeginToggleGroup(" Use Custom Start/End Position", _variation.useRandomStartTime);
                if (newStart != _variation.useRandomStartTime)
                {
                    AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "toggle Use Custom Start/End Position");
                    _variation.useRandomStartTime = newStart;
                }
                DTGUIHelper.EndGroupHeader();

                if (_variation.useRandomStartTime)
                {
                    var newMin = EditorGUILayout.Slider("Start Min (%)", _variation.randomStartMinPercent, 0f, 100f);
                    if (newMin != _variation.randomStartMinPercent)
                    {
                        AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Start Min (%)");
                        _variation.randomStartMinPercent = newMin;
                        if (_variation.randomStartMaxPercent <= _variation.randomStartMinPercent)
                        {
                            _variation.randomStartMaxPercent = _variation.randomStartMinPercent;
                        }
                    }

                    var newMax = EditorGUILayout.Slider("Start Max (%)", _variation.randomStartMaxPercent, 0f, 100f);
                    if (newMax != _variation.randomStartMaxPercent)
                    {
                        AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Start Max (%)");
                        _variation.randomStartMaxPercent = newMax;
                        if (_variation.randomStartMinPercent > _variation.randomStartMaxPercent)
                        {
                            _variation.randomStartMinPercent = _variation.randomStartMaxPercent;
                        }
                    }

                    var newEnd = EditorGUILayout.Slider("End (%)", _variation.randomEndPercent, 0f, 100f);
                    if (newEnd != _variation.randomEndPercent || _variation.randomEndPercent < _variation.randomStartMaxPercent)
                    {
                        AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change End (%)");
                        _variation.randomEndPercent = newEnd;
                        if (_variation.randomEndPercent < _variation.randomStartMaxPercent)
                        {
                            _variation.randomEndPercent = _variation.randomStartMaxPercent;
                        }
                    }
                }

                EditorGUILayout.EndToggleGroup();

                if (_variation.VarAudio.loop)
                {
                    DTGUIHelper.StartGroupHeader();

                    newStart = EditorGUILayout.BeginToggleGroup(" Use Finite Looping", _variation.useCustomLooping);
                    if (newStart != _variation.useCustomLooping)
                    {
                        AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation,
                                                                    "toggle Use Finite Looping");
                        _variation.useCustomLooping = newStart;
                    }
                    DTGUIHelper.EndGroupHeader();

                    if (_variation.useCustomLooping)
                    {
                        var newMin = EditorGUILayout.IntSlider("Min Loops", _variation.minCustomLoops, 1, 100);
                        if (newMin != _variation.minCustomLoops)
                        {
                            AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Min Loops");
                            _variation.minCustomLoops = newMin;
                            if (_variation.maxCustomLoops <= _variation.minCustomLoops)
                            {
                                _variation.maxCustomLoops = _variation.minCustomLoops;
                            }
                        }

                        var newMax = EditorGUILayout.IntSlider("Max Loops", _variation.maxCustomLoops, 1, 100);
                        if (newMax != _variation.maxCustomLoops)
                        {
                            AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Max Loops");
                            _variation.maxCustomLoops = newMax;
                            if (_variation.minCustomLoops > _variation.maxCustomLoops)
                            {
                                _variation.minCustomLoops = _variation.maxCustomLoops;
                            }
                        }
                    }

                    EditorGUILayout.EndToggleGroup();
                }

                DTGUIHelper.StartGroupHeader();
                var newUseFades = EditorGUILayout.BeginToggleGroup(" Use Custom Fading", _variation.useFades);
                if (newUseFades != _variation.useFades)
                {
                    AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "toggle Use Custom Fading");
                    _variation.useFades = newUseFades;
                }
                DTGUIHelper.EndGroupHeader();

                if (_variation.useFades)
                {
                    var newFadeIn = EditorGUILayout.Slider("Fade In Time (sec)", _variation.fadeInTime, 0f, 10f);
                    if (newFadeIn != _variation.fadeInTime)
                    {
                        AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Fade In Time");
                        _variation.fadeInTime = newFadeIn;
                    }

                    var newFadeOut = EditorGUILayout.Slider("Fade Out time (sec)", _variation.fadeOutTime, 0f, 10f);
                    if (newFadeOut != _variation.fadeOutTime)
                    {
                        AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Fade Out Time");
                        _variation.fadeOutTime = newFadeOut;
                    }

                    if (_variation.VarAudio.loop)
                    {
                        DTGUIHelper.ShowColorWarning("Looped clips will not automatically use the custom fade out. You will need to call FadeOutNowAndStop() on the Variation to use the fade.");
                    }
                }

                EditorGUILayout.EndToggleGroup();
            }

            if (GUI.changed || isDirty)
            {
                EditorUtility.SetDirty(target);
            }

            //DrawDefaultInspector();
        }
    // ReSharper disable once FunctionComplexityOverflow
    public override void OnInspectorGUI()
    {
        EditorGUI.indentLevel = 1;
        var isDirty = false;

        _variation = (DynamicGroupVariation)target;

        if (MasterAudioInspectorResources.LogoTexture != null)
        {
            DTGUIHelper.ShowHeaderTexture(MasterAudioInspectorResources.LogoTexture);
        }

        EditorGUI.indentLevel = 0;  // Space will handle this for the header
        var        previewLang = SystemLanguage.English;
        GameObject dgscGO      = null;

        if (_variation.transform.parent != null && _variation.transform.parent.parent != null)
        {
            var parentParent = _variation.transform.parent.parent;

            dgscGO = parentParent.gameObject;

            var dgsc = dgscGO.GetComponent <DynamicSoundGroupCreator>();
            if (dgsc != null)
            {
                previewLang = dgsc.previewLanguage;
            }
        }

        if (dgscGO == null)
        {
            DTGUIHelper.ShowRedError("This prefab must have a GameObject 2 parents up. Prefab broken.");
            return;
        }

        AudioSource previewer;

        EditorGUILayout.BeginHorizontal(EditorStyles.toolbar);
        GUI.contentColor = DTGUIHelper.BrightButtonColor;
        if (GUILayout.Button(new GUIContent("Back to Group", "Select Group in Hierarchy"), EditorStyles.toolbarButton, GUILayout.Width(120)))
        {
            // ReSharper disable once PossibleNullReferenceException
            Selection.activeObject = _variation.transform.parent.gameObject;
        }
        GUILayout.FlexibleSpace();
        GUI.contentColor = Color.white;

        var buttonPressed = DTGUIHelper.AddDynamicVariationButtons();

        switch (buttonPressed)
        {
        case DTGUIHelper.DTFunctionButtons.Play:
            isDirty = true;

            previewer = MasterAudioInspector.GetPreviewer();

            var randPitch = SoundGroupVariationInspector.GetRandomPreviewPitch(_variation);
            var varVol    = SoundGroupVariationInspector.GetRandomPreviewVolume(_variation);

            if (_variation.audLocation != MasterAudio.AudioLocation.FileOnInternet)
            {
                if (previewer != null)
                {
                    MasterAudioInspector.StopPreviewer();
                    previewer.pitch = randPitch;
                }
            }

            var calcVolume = varVol * _variation.ParentGroup.groupMasterVolume;

            switch (_variation.audLocation)
            {
            case MasterAudio.AudioLocation.ResourceFile:
                var fileName = AudioResourceOptimizer.GetLocalizedDynamicSoundGroupFileName(previewLang, _variation.useLocalization, _variation.resourceFileName);

                var clip = Resources.Load(fileName) as AudioClip;
                if (clip != null)
                {
                    if (previewer != null)
                    {
                        previewer.PlayOneShot(clip, calcVolume);
                    }
                }
                else
                {
                    DTGUIHelper.ShowAlert("Could not find Resource file: " + fileName);
                }
                break;

            case MasterAudio.AudioLocation.Clip:
                if (previewer != null)
                {
                    previewer.PlayOneShot(_variation.VarAudio.clip, calcVolume);
                }
                break;

            case MasterAudio.AudioLocation.FileOnInternet:
                if (!string.IsNullOrEmpty(_variation.internetFileUrl))
                {
                    Application.OpenURL(_variation.internetFileUrl);
                }
                break;
            }

            break;

        case DTGUIHelper.DTFunctionButtons.Stop:
            if (_variation.audLocation != MasterAudio.AudioLocation.FileOnInternet)
            {
                MasterAudioInspector.StopPreviewer();
            }
            break;
        }

        EditorGUILayout.EndHorizontal();

        DTGUIHelper.HelpHeader("http://www.dtdevtools.com/docs/masteraudio/SoundGroupVariations.htm");

        if (!Application.isPlaying)
        {
            DTGUIHelper.ShowColorWarning(MasterAudio.PreviewText);
        }

        var oldLocation = _variation.audLocation;

        EditorGUILayout.BeginHorizontal();
        var newLocation = (MasterAudio.AudioLocation)EditorGUILayout.EnumPopup("Audio Origin", _variation.audLocation);

        DTGUIHelper.AddHelpIcon("http://www.dtdevtools.com/docs/masteraudio/SoundGroupVariations.htm#AudioOrigin");
        EditorGUILayout.EndHorizontal();

        if (newLocation != oldLocation)
        {
            AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Audio Origin");
            _variation.audLocation = newLocation;
        }

        switch (_variation.audLocation)
        {
        case MasterAudio.AudioLocation.Clip:
            var newClip = (AudioClip)EditorGUILayout.ObjectField("Audio Clip", _variation.VarAudio.clip, typeof(AudioClip), false);

            if (newClip != _variation.VarAudio.clip)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation.VarAudio, "assign Audio Clip");
                _variation.VarAudio.clip = newClip;
            }
            break;

        case MasterAudio.AudioLocation.FileOnInternet:
            if (oldLocation != _variation.audLocation)
            {
                if (_variation.VarAudio.clip != null)
                {
                    Debug.Log("Audio clip removed to prevent unnecessary memory usage on File On Internet Variation.");
                }
                _variation.VarAudio.clip = null;
            }

            if (!Application.isPlaying)
            {
                var newUrl = EditorGUILayout.TextField("Internet File URL", _variation.internetFileUrl);
                if (newUrl != _variation.internetFileUrl)
                {
                    AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Internet File URL");
                    _variation.internetFileUrl = newUrl;
                }
            }

            if (string.IsNullOrEmpty(_variation.internetFileUrl))
            {
                DTGUIHelper.ShowLargeBarAlert("You have not specified a URL for the File On Internet. This Variation will not be available to play without one.");
            }
            break;

        case MasterAudio.AudioLocation.ResourceFile:
            if (oldLocation != _variation.audLocation)
            {
                if (_variation.VarAudio.clip != null)
                {
                    Debug.Log("Audio clip removed to prevent unnecessary memory usage on Resource file Variation.");
                }
                _variation.VarAudio.clip = null;
            }

            EditorGUILayout.BeginVertical();
            var anEvent = Event.current;

            GUI.color = DTGUIHelper.DragAreaColor;
            var dragArea = GUILayoutUtility.GetRect(0f, 20f, GUILayout.ExpandWidth(true));
            GUI.Box(dragArea, "Drag Resource Audio clip here to use its name!");
            GUI.color = Color.white;

            string newFilename;

            switch (anEvent.type)
            {
            case EventType.DragUpdated:
            case EventType.DragPerform:
                if (!dragArea.Contains(anEvent.mousePosition))
                {
                    break;
                }

                DragAndDrop.visualMode = DragAndDropVisualMode.Copy;

                if (anEvent.type == EventType.DragPerform)
                {
                    DragAndDrop.AcceptDrag();

                    foreach (var dragged in DragAndDrop.objectReferences)
                    {
                        var aClip = dragged as AudioClip;
                        if (aClip == null)
                        {
                            continue;
                        }

                        AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Resource filename");

                        var useLocalization = false;
                        newFilename = DTGUIHelper.GetResourcePath(aClip, ref useLocalization);
                        if (string.IsNullOrEmpty(newFilename))
                        {
                            newFilename = aClip.name;
                        }

                        _variation.resourceFileName = newFilename;
                        _variation.useLocalization  = useLocalization;
                        break;
                    }
                }
                Event.current.Use();
                break;
            }
            EditorGUILayout.EndVertical();

            newFilename = EditorGUILayout.TextField("Resource Filename", _variation.resourceFileName);
            if (newFilename != _variation.resourceFileName)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Resource filename");
                _variation.resourceFileName = newFilename;
            }

            EditorGUI.indentLevel = 1;

            var newLocal = EditorGUILayout.Toggle("Use Localized Folder", _variation.useLocalization);
            if (newLocal != _variation.useLocalization)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "toggle Use Localized Folder");
                _variation.useLocalization = newLocal;
            }

            break;
        }

        EditorGUI.indentLevel = 0;

        var newProbability = EditorGUILayout.IntSlider("Probability to Play (%)", _variation.probabilityToPlay, 0, 100);

        if (newProbability != _variation.probabilityToPlay)
        {
            AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Probability to Play (%)");
            _variation.probabilityToPlay = newProbability;
        }

        if (_variation.probabilityToPlay < 100)
        {
            DTGUIHelper.ShowLargeBarAlert("Since Probability to Play is less than 100%, you will not always hear this Variation when it's selected to play.");
        }

        var newVolume = EditorGUILayout.Slider("Volume", _variation.VarAudio.volume, 0f, 1f);

        if (newVolume != _variation.VarAudio.volume)
        {
            AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation.VarAudio, "change Volume");
            _variation.VarAudio.volume = newVolume;
        }

        var newPitch = DTGUIHelper.DisplayPitchField(_variation.VarAudio.pitch);

        if (newPitch != _variation.VarAudio.pitch)
        {
            AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation.VarAudio, "change Pitch");
            _variation.VarAudio.pitch = newPitch;
        }

        if (_variation.ParentGroup.curVariationMode == MasterAudioGroup.VariationMode.LoopedChain)
        {
            DTGUIHelper.ShowLargeBarAlert(MasterAudio.LoopDisabledLoopedChain);
        }
        else if (_variation.useRandomStartTime && _variation.randomEndPercent != 100f)
        {
            DTGUIHelper.ShowLargeBarAlert(MasterAudio.LoopDisabledCustomEnd);
        }
        else
        {
            var newLoop = EditorGUILayout.Toggle("Loop Clip", _variation.VarAudio.loop);
            if (newLoop != _variation.VarAudio.loop)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation.VarAudio, "toggle Loop");
                _variation.VarAudio.loop = newLoop;
            }
        }

        EditorGUILayout.BeginHorizontal();
        var newWeight = EditorGUILayout.IntSlider("Voices (Weight)", _variation.weight, 0, 100);

        DTGUIHelper.AddHelpIcon("http://www.dtdevtools.com/docs/masteraudio/SoundGroupVariations.htm#Voices");
        EditorGUILayout.EndHorizontal();
        if (newWeight != _variation.weight)
        {
            AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Voices (Weight)");
            _variation.weight = newWeight;
        }


        DTGUIHelper.StartGroupHeader();

        var newUseRndPitch = EditorGUILayout.BeginToggleGroup(" Use Random Pitch", _variation.useRandomPitch);

        if (newUseRndPitch != _variation.useRandomPitch)
        {
            AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "toggle Use Random Pitch");
            _variation.useRandomPitch = newUseRndPitch;
        }
        DTGUIHelper.EndGroupHeader();

        if (_variation.useRandomPitch)
        {
            var newMode = (SoundGroupVariation.RandomPitchMode)EditorGUILayout.EnumPopup("Pitch Compute Mode", _variation.randomPitchMode);
            if (newMode != _variation.randomPitchMode)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Pitch Compute Mode");
                _variation.randomPitchMode = newMode;
            }

            var newPitchMin = DTGUIHelper.DisplayPitchField(_variation.randomPitchMin, "Random Pitch Min");
            if (newPitchMin != _variation.randomPitchMin)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Random Pitch Min");
                _variation.randomPitchMin = newPitchMin;
                if (_variation.randomPitchMax <= _variation.randomPitchMin)
                {
                    _variation.randomPitchMax = _variation.randomPitchMin;
                }
            }

            var newPitchMax = DTGUIHelper.DisplayPitchField(_variation.randomPitchMax, "Random Pitch Max");
            if (newPitchMax != _variation.randomPitchMax)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Random Pitch Max");
                _variation.randomPitchMax = newPitchMax;
                if (_variation.randomPitchMin > _variation.randomPitchMax)
                {
                    _variation.randomPitchMin = _variation.randomPitchMax;
                }
            }
        }

        EditorGUILayout.EndToggleGroup();
        DTGUIHelper.AddSpaceForNonU5(2);

        DTGUIHelper.StartGroupHeader();

        var newUseRndVol = EditorGUILayout.BeginToggleGroup(" Use Random Volume", _variation.useRandomVolume);

        if (newUseRndVol != _variation.useRandomVolume)
        {
            AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "toggle Use Random Volume");
            _variation.useRandomVolume = newUseRndVol;
        }
        DTGUIHelper.EndGroupHeader();

        if (_variation.useRandomVolume)
        {
            var newMode = (SoundGroupVariation.RandomVolumeMode)EditorGUILayout.EnumPopup("Volume Compute Mode", _variation.randomVolumeMode);
            if (newMode != _variation.randomVolumeMode)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Volume Compute Mode");
                _variation.randomVolumeMode = newMode;
            }

            var volMin = 0f;
            if (_variation.randomVolumeMode == SoundGroupVariation.RandomVolumeMode.AddToClipVolume)
            {
                volMin = -1f;
            }

            var newVolMin = DTGUIHelper.DisplayVolumeField(_variation.randomVolumeMin, DTGUIHelper.VolumeFieldType.None, MasterAudio.MixerWidthMode.Normal, volMin, true, "Random Volume Min");
            if (newVolMin != _variation.randomVolumeMin)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Random Volume Min");
                _variation.randomVolumeMin = newVolMin;
                if (_variation.randomVolumeMax <= _variation.randomVolumeMin)
                {
                    _variation.randomVolumeMax = _variation.randomVolumeMin;
                }
            }

            var newVolMax = DTGUIHelper.DisplayVolumeField(_variation.randomVolumeMax, DTGUIHelper.VolumeFieldType.None, MasterAudio.MixerWidthMode.Normal, volMin, true, "Random Volume Max");
            if (newVolMax != _variation.randomVolumeMax)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Random Volume Max");
                _variation.randomVolumeMax = newVolMax;
                if (_variation.randomVolumeMin > _variation.randomVolumeMax)
                {
                    _variation.randomVolumeMin = _variation.randomVolumeMax;
                }
            }
        }

        EditorGUILayout.EndToggleGroup();
        DTGUIHelper.AddSpaceForNonU5(2);

        DTGUIHelper.StartGroupHeader();

        var newSilence = EditorGUILayout.BeginToggleGroup(" Use Random Delay", _variation.useIntroSilence);

        if (newSilence != _variation.useIntroSilence)
        {
            AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "toggle Use Random Delay");
            _variation.useIntroSilence = newSilence;
        }
        DTGUIHelper.EndGroupHeader();

        if (_variation.useIntroSilence)
        {
            var newSilenceMin = EditorGUILayout.Slider("Delay Min (sec)", _variation.introSilenceMin, 0f, 100f);
            if (newSilenceMin != _variation.introSilenceMin)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Delay Min (sec)");
                _variation.introSilenceMin = newSilenceMin;
                if (_variation.introSilenceMin > _variation.introSilenceMax)
                {
                    _variation.introSilenceMax = newSilenceMin;
                }
            }

            var newSilenceMax = EditorGUILayout.Slider("Delay Max (sec)", _variation.introSilenceMax, 0f, 100f);
            if (newSilenceMax != _variation.introSilenceMax)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Delay Max (sec)");
                _variation.introSilenceMax = newSilenceMax;
                if (_variation.introSilenceMax < _variation.introSilenceMin)
                {
                    _variation.introSilenceMin = newSilenceMax;
                }
            }
        }
        EditorGUILayout.EndToggleGroup();
        DTGUIHelper.AddSpaceForNonU5(2);

        DTGUIHelper.StartGroupHeader();

        var newStart = EditorGUILayout.BeginToggleGroup(" Use Custom Start/End Position", _variation.useRandomStartTime);

        if (newStart != _variation.useRandomStartTime)
        {
            AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "toggle Use Custom Start/End Position");
            _variation.useRandomStartTime = newStart;
        }
        DTGUIHelper.EndGroupHeader();

        if (_variation.useRandomStartTime)
        {
            var newMin = EditorGUILayout.Slider("Start Min (%)", _variation.randomStartMinPercent, 0f, 100f);
            if (newMin != _variation.randomStartMinPercent)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Start Min (%)");
                _variation.randomStartMinPercent = newMin;
                if (_variation.randomStartMaxPercent <= _variation.randomStartMinPercent)
                {
                    _variation.randomStartMaxPercent = _variation.randomStartMinPercent;
                }
            }

            var newMax = EditorGUILayout.Slider("Start Max (%)", _variation.randomStartMaxPercent, 0f, 100f);
            if (newMax != _variation.randomStartMaxPercent)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Start Max (%)");
                _variation.randomStartMaxPercent = newMax;
                if (_variation.randomStartMinPercent > _variation.randomStartMaxPercent)
                {
                    _variation.randomStartMinPercent = _variation.randomStartMaxPercent;
                }
            }

            var newEnd = EditorGUILayout.Slider("End (%)", _variation.randomEndPercent, 0f, 100f);
            if (newEnd != _variation.randomEndPercent || _variation.randomEndPercent < _variation.randomStartMaxPercent)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change End (%)");
                _variation.randomEndPercent = newEnd;
                if (_variation.randomEndPercent < _variation.randomStartMaxPercent)
                {
                    _variation.randomEndPercent = _variation.randomStartMaxPercent;
                }
            }
        }

        EditorGUILayout.EndToggleGroup();
        DTGUIHelper.AddSpaceForNonU5(2);

        if (_variation.VarAudio.loop)
        {
            DTGUIHelper.StartGroupHeader();

            newStart = EditorGUILayout.BeginToggleGroup(" Use Finite Looping", _variation.useCustomLooping);
            if (newStart != _variation.useCustomLooping)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation,
                                                            "toggle Use Finite Looping");
                _variation.useCustomLooping = newStart;
            }
            DTGUIHelper.EndGroupHeader();

            if (_variation.useCustomLooping)
            {
                var newMin = EditorGUILayout.IntSlider("Min Loops", _variation.minCustomLoops, 1, 100);
                if (newMin != _variation.minCustomLoops)
                {
                    AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Min Loops");
                    _variation.minCustomLoops = newMin;
                    if (_variation.maxCustomLoops <= _variation.minCustomLoops)
                    {
                        _variation.maxCustomLoops = _variation.minCustomLoops;
                    }
                }

                var newMax = EditorGUILayout.IntSlider("Max Loops", _variation.maxCustomLoops, 1, 100);
                if (newMax != _variation.maxCustomLoops)
                {
                    AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Max Loops");
                    _variation.maxCustomLoops = newMax;
                    if (_variation.minCustomLoops > _variation.maxCustomLoops)
                    {
                        _variation.minCustomLoops = _variation.maxCustomLoops;
                    }
                }
            }

            EditorGUILayout.EndToggleGroup();
            DTGUIHelper.AddSpaceForNonU5(2);
        }

        DTGUIHelper.StartGroupHeader();

        var newUseFades = EditorGUILayout.BeginToggleGroup(" Use Custom Fading", _variation.useFades);

        if (newUseFades != _variation.useFades)
        {
            AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "toggle Use Custom Fading");
            _variation.useFades = newUseFades;
        }
        DTGUIHelper.EndGroupHeader();

        if (_variation.useFades)
        {
            var newFadeIn = EditorGUILayout.Slider("Fade In Time (sec)", _variation.fadeInTime, 0f, 10f);
            if (newFadeIn != _variation.fadeInTime)
            {
                AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Fade In Time");
                _variation.fadeInTime = newFadeIn;
            }

            if (_variation.VarAudio.loop)
            {
                DTGUIHelper.ShowColorWarning("Looped clips cannot have a custom fade out.");
            }
            else
            {
                var newFadeOut = EditorGUILayout.Slider("Fade Out time (sec)", _variation.fadeOutTime, 0f, 10f);
                if (newFadeOut != _variation.fadeOutTime)
                {
                    AudioUndoHelper.RecordObjectPropertyForUndo(ref isDirty, _variation, "change Fade Out Time");
                    _variation.fadeOutTime = newFadeOut;
                }
            }
        }

        EditorGUILayout.EndToggleGroup();

        if (GUI.changed || isDirty)
        {
            EditorUtility.SetDirty(target);
        }

        //DrawDefaultInspector();
    }
    public override void OnInspectorGUI()
    {
        EditorGUIUtility.LookLikeControls();

        EditorGUI.indentLevel = 1;
        var isDirty = false;

        _variation = (DynamicGroupVariation)target;

        if (MasterAudioInspectorResources.logoTexture != null)
        {
            DTGUIHelper.ShowHeaderTexture(MasterAudioInspectorResources.logoTexture);
        }

        EditorGUI.indentLevel = 0;  // Space will handle this for the header

        DynamicSoundGroupCreator creator = null;

        if (_variation.transform.parent != null && _variation.transform.parent.parent != null)
        {
            creator = _variation.transform.parent.parent.GetComponent <DynamicSoundGroupCreator>();
        }

        if (creator == null)
        {
            DTGUIHelper.ShowRedError("This prefab must have DynamicSoundGroupCreator 2 parents up.");
            return;
        }

        EditorGUILayout.BeginHorizontal(EditorStyles.toolbar);
        GUI.contentColor = Color.green;
        if (GUILayout.Button(new GUIContent("Back to Group", "Select Group in Hierarchy"), EditorStyles.toolbarButton, GUILayout.Width(120)))
        {
            Selection.activeObject = _variation.transform.parent.gameObject;
        }
        GUILayout.FlexibleSpace();
        GUI.contentColor = Color.white;

        var buttonPressed = DTGUIHelper.AddDynamicVariationButtons();

        switch (buttonPressed)
        {
        case DTGUIHelper.DTFunctionButtons.Play:
            isDirty = true;
            if (_variation.audLocation == MasterAudio.AudioLocation.ResourceFile)
            {
                creator.PreviewerInstance.Stop();
                creator.PreviewerInstance.PlayOneShot(Resources.Load(_variation.resourceFileName) as AudioClip);
            }
            else
            {
                PlaySound(_variation.audio);
            }
            break;

        case DTGUIHelper.DTFunctionButtons.Stop:
            if (_variation.audLocation == MasterAudio.AudioLocation.ResourceFile)
            {
                creator.PreviewerInstance.Stop();
            }
            else
            {
                StopSound(_variation.audio);
            }
            break;
        }

        EditorGUILayout.EndHorizontal();

        if (!Application.isPlaying)
        {
            DTGUIHelper.ShowColorWarning("*Fading & random settings are ignored by preview in edit mode.");
        }

        var oldLocation = _variation.audLocation;
        var newLocation = (MasterAudio.AudioLocation)EditorGUILayout.EnumPopup("Audio Origin", _variation.audLocation);

        if (newLocation != oldLocation)
        {
            UndoHelper.RecordObjectPropertyForUndo(_variation, "change Audio Origin");
            _variation.audLocation = newLocation;
        }

        switch (_variation.audLocation)
        {
        case MasterAudio.AudioLocation.Clip:
            var newClip = (AudioClip)EditorGUILayout.ObjectField("Audio Clip", _variation.audio.clip, typeof(AudioClip), false);

            if (newClip != _variation.audio.clip)
            {
                UndoHelper.RecordObjectPropertyForUndo(_variation.audio, "assign Audio Clip");
                _variation.audio.clip = newClip;
            }
            break;

        case MasterAudio.AudioLocation.ResourceFile:
            if (oldLocation != _variation.audLocation)
            {
                if (_variation.audio.clip != null)
                {
                    Debug.Log("Audio clip removed to prevent unnecessary memory usage on Resource file Variation.");
                }
                _variation.audio.clip = null;
            }

            EditorGUILayout.BeginVertical();
            var anEvent = Event.current;

            GUI.color = Color.yellow;
            var dragArea = GUILayoutUtility.GetRect(0f, 20f, GUILayout.ExpandWidth(true));
            GUI.Box(dragArea, "Drag Resource Audio clip here to use its name!");
            GUI.color = Color.white;

            var newFilename = string.Empty;

            switch (anEvent.type)
            {
            case EventType.DragUpdated:
            case EventType.DragPerform:
                if (!dragArea.Contains(anEvent.mousePosition))
                {
                    break;
                }

                DragAndDrop.visualMode = DragAndDropVisualMode.Copy;

                if (anEvent.type == EventType.DragPerform)
                {
                    DragAndDrop.AcceptDrag();

                    foreach (var dragged in DragAndDrop.objectReferences)
                    {
                        var aClip = dragged as AudioClip;
                        if (aClip == null)
                        {
                            continue;
                        }

                        newFilename = DTGUIHelper.GetResourcePath(aClip);
                        if (string.IsNullOrEmpty(newFilename))
                        {
                            newFilename = aClip.name;
                        }

                        if (newFilename != _variation.resourceFileName)
                        {
                            UndoHelper.RecordObjectPropertyForUndo(_variation, "change Resource filename");
                            _variation.resourceFileName = aClip.name;
                        }
                        break;
                    }
                }
                Event.current.Use();
                break;
            }
            EditorGUILayout.EndVertical();

            newFilename = EditorGUILayout.TextField("Resource Filename", _variation.resourceFileName);
            if (newFilename != _variation.resourceFileName)
            {
                UndoHelper.RecordObjectPropertyForUndo(_variation, "change Resource filename");
                _variation.resourceFileName = newFilename;
            }
            break;
        }

        var newVolume = EditorGUILayout.Slider("Volume", _variation.audio.volume, 0f, 1f);

        if (newVolume != _variation.audio.volume)
        {
            UndoHelper.RecordObjectPropertyForUndo(_variation.audio, "change Volume");
            _variation.audio.volume = newVolume;
        }

        var newPitch = EditorGUILayout.Slider("Pitch", _variation.audio.pitch, -3f, 3f);

        if (newPitch != _variation.audio.pitch)
        {
            UndoHelper.RecordObjectPropertyForUndo(_variation.audio, "change Pitch");
            _variation.audio.pitch = newPitch;
        }

        var newLoop = EditorGUILayout.Toggle("Loop Clip", _variation.audio.loop);

        if (newLoop != _variation.audio.loop)
        {
            UndoHelper.RecordObjectPropertyForUndo(_variation.audio, "toggle Loop");
            _variation.audio.loop = newLoop;
        }

        var newRandomPitch = EditorGUILayout.Slider("Random Pitch", _variation.randomPitch, 0f, 3f);

        if (newRandomPitch != _variation.randomPitch)
        {
            UndoHelper.RecordObjectPropertyForUndo(_variation, "change Random Pitch");
            _variation.randomPitch = newRandomPitch;
        }

        var newRandomVolume = EditorGUILayout.Slider("Random Volume", _variation.randomVolume, 0f, 1f);

        if (newRandomVolume != _variation.randomVolume)
        {
            UndoHelper.RecordObjectPropertyForUndo(_variation, "change Random Volume");
            _variation.randomVolume = newRandomVolume;
        }

        var newWeight = EditorGUILayout.IntSlider("Weight (Instances)", _variation.weight, 0, 100);

        if (newWeight != _variation.weight)
        {
            UndoHelper.RecordObjectPropertyForUndo(_variation, "change Weight");
            _variation.weight = newWeight;
        }

        if (_variation.HasActiveFXFilter)
        {
            var newFxTailTime = EditorGUILayout.Slider("FX Tail Time", _variation.fxTailTime, 0f, 10f);
            if (newFxTailTime != _variation.fxTailTime)
            {
                UndoHelper.RecordObjectPropertyForUndo(_variation, "change FX Tail Time");
                _variation.fxTailTime = newFxTailTime;
            }
        }

        var newSilence = EditorGUILayout.BeginToggleGroup("Use Random Delay", _variation.useIntroSilence);

        if (newSilence != _variation.useIntroSilence)
        {
            UndoHelper.RecordObjectPropertyForUndo(_variation, "toggle Use Random Delay");
            _variation.useIntroSilence = newSilence;
        }

        if (_variation.useIntroSilence)
        {
            var newSilenceMin = EditorGUILayout.Slider("Delay Min (sec)", _variation.introSilenceMin, 0f, 100f);
            if (newSilenceMin != _variation.introSilenceMin)
            {
                UndoHelper.RecordObjectPropertyForUndo(_variation, "change Delay Min (sec)");
                _variation.introSilenceMin = newSilenceMin;
                if (_variation.introSilenceMin > _variation.introSilenceMax)
                {
                    _variation.introSilenceMax = newSilenceMin;
                }
            }

            var newSilenceMax = EditorGUILayout.Slider("Delay Max (sec)", _variation.introSilenceMax, 0f, 100f);
            if (newSilenceMax != _variation.introSilenceMax)
            {
                UndoHelper.RecordObjectPropertyForUndo(_variation, "change Delay Max (sec)");
                _variation.introSilenceMax = newSilenceMax;
                if (_variation.introSilenceMax < _variation.introSilenceMin)
                {
                    _variation.introSilenceMin = newSilenceMax;
                }
            }
        }
        EditorGUILayout.EndToggleGroup();

        var newUseFades = EditorGUILayout.BeginToggleGroup("Use Custom Fading", _variation.useFades);

        if (newUseFades != _variation.useFades)
        {
            UndoHelper.RecordObjectPropertyForUndo(_variation, "toggle Use Custom Fading");
            _variation.useFades = newUseFades;
        }

        if (_variation.useFades)
        {
            var newFadeIn = EditorGUILayout.Slider("Fade In Time (sec)", _variation.fadeInTime, 0f, 10f);
            if (newFadeIn != _variation.fadeInTime)
            {
                UndoHelper.RecordObjectPropertyForUndo(_variation, "change Fade In Time");
                _variation.fadeInTime = newFadeIn;
            }

            if (_variation.audio.loop)
            {
                DTGUIHelper.ShowColorWarning("*Looped clips cannot have a custom fade out.");
            }
            else
            {
                var newFadeOut = EditorGUILayout.Slider("Fade Out time (sec)", _variation.fadeOutTime, 0f, 10f);
                if (newFadeOut != _variation.fadeOutTime)
                {
                    UndoHelper.RecordObjectPropertyForUndo(_variation, "change Fade Out Time");
                    _variation.fadeOutTime = newFadeOut;
                }
            }
        }

        EditorGUILayout.EndToggleGroup();

        var filterList = new List <string>()
        {
            MasterAudio.NO_GROUP_NAME,
            "Low Pass",
            "High Pass",
            "Distortion",
            "Chorus",
            "Echo",
            "Reverb"
        };

        var newFilterIndex = EditorGUILayout.Popup("Add Filter Effect", 0, filterList.ToArray());

        switch (newFilterIndex)
        {
        case 1:
            AddFilterComponent(typeof(AudioLowPassFilter));
            break;

        case 2:
            AddFilterComponent(typeof(AudioHighPassFilter));
            break;

        case 3:
            AddFilterComponent(typeof(AudioDistortionFilter));
            break;

        case 4:
            AddFilterComponent(typeof(AudioChorusFilter));
            break;

        case 5:
            AddFilterComponent(typeof(AudioEchoFilter));
            break;

        case 6:
            AddFilterComponent(typeof(AudioReverbFilter));
            break;
        }

        if (GUI.changed || isDirty)
        {
            EditorUtility.SetDirty(target);
        }

        this.Repaint();

        //DrawDefaultInspector();
    }
    public override void OnInspectorGUI()
    {
        EditorGUIUtility.LookLikeControls();

        EditorGUI.indentLevel = 0;
        var isDirty = false;

        MasterAudio ma = MasterAudio.Instance;

        if (ma == null)
        {
            isValid = false;
        }

        MasterAudioGroup _group = (MasterAudioGroup)target;

        _group = RescanChildren(_group);

        if (!isValid)
        {
            return;
        }

        var isInProjectView = DTGUIHelper.IsPrefabInProjectView(_group);

        if (MasterAudioInspectorResources.logoTexture != null)
        {
            DTGUIHelper.ShowHeaderTexture(MasterAudioInspectorResources.logoTexture);
        }

        var newVol = EditorGUILayout.Slider("Group Master Volume", _group.groupMasterVolume, 0f, 1f);

        if (newVol != _group.groupMasterVolume)
        {
            UndoHelper.RecordObjectPropertyForUndo(_group, "change Group Master Volume");
            _group.groupMasterVolume = newVol;
        }

        var newVarSequence = (MasterAudioGroup.VariationSequence)EditorGUILayout.EnumPopup("Variation Sequence", _group.curVariationSequence);

        if (newVarSequence != _group.curVariationSequence)
        {
            UndoHelper.RecordObjectPropertyForUndo(_group, "change Variation Sequence");
            _group.curVariationSequence = newVarSequence;
        }

        if (_group.curVariationSequence == MasterAudioGroup.VariationSequence.TopToBottom)
        {
            var newUseInactive = EditorGUILayout.BeginToggleGroup("Refill Variation Pool After Inactive Time", _group.useInactivePeriodPoolRefill);
            if (newUseInactive != _group.useInactivePeriodPoolRefill)
            {
                UndoHelper.RecordObjectPropertyForUndo(_group, "toggle Inactive Refill");
                _group.useInactivePeriodPoolRefill = newUseInactive;
            }

            EditorGUI.indentLevel = 1;
            var newInactivePeriod = EditorGUILayout.Slider("Inactive Time (sec)", _group.inactivePeriodSeconds, .2f, 30f);
            if (newInactivePeriod != _group.inactivePeriodSeconds)
            {
                UndoHelper.RecordObjectPropertyForUndo(_group, "change Inactive Time");
                _group.inactivePeriodSeconds = newInactivePeriod;
            }

            EditorGUILayout.EndToggleGroup();
        }

        EditorGUI.indentLevel = 0;
        var newVarMode = (MasterAudioGroup.VariationMode)EditorGUILayout.EnumPopup("Variation Mode", _group.curVariationMode);

        if (newVarMode != _group.curVariationMode)
        {
            UndoHelper.RecordObjectPropertyForUndo(_group, "change Variation Mode");
            _group.curVariationMode = newVarMode;
        }

        EditorGUI.indentLevel = 1;

        switch (_group.curVariationMode)
        {
        case MasterAudioGroup.VariationMode.Normal:
            var newRetrigger = EditorGUILayout.IntSlider("Retrigger Percentage", _group.retriggerPercentage, 0, 100);
            if (newRetrigger != _group.retriggerPercentage)
            {
                UndoHelper.RecordObjectPropertyForUndo(_group, "change Retrigger Percentage");
                _group.retriggerPercentage = newRetrigger;
            }

            var newLimitPoly = EditorGUILayout.Toggle("Limit Polyphony", _group.limitPolyphony);
            if (newLimitPoly != _group.limitPolyphony)
            {
                UndoHelper.RecordObjectPropertyForUndo(_group, "toggle Limit Polyphony");
                _group.limitPolyphony = newLimitPoly;
            }
            if (_group.limitPolyphony)
            {
                int maxVoices = 0;
                for (var i = 0; i < _group.groupVariations.Count; i++)
                {
                    var variation = _group.groupVariations[i];
                    maxVoices += variation.weight;
                }

                var newVoiceLimit = EditorGUILayout.IntSlider("Polyphony Voice Limit", _group.voiceLimitCount, 1, maxVoices);
                if (newVoiceLimit != _group.voiceLimitCount)
                {
                    UndoHelper.RecordObjectPropertyForUndo(_group, "change Polyphony Voice Limit");
                    _group.voiceLimitCount = newVoiceLimit;
                }
            }

            var newLimitMode = (MasterAudioGroup.LimitMode)EditorGUILayout.EnumPopup("Replay Limit Mode", _group.limitMode);
            if (newLimitMode != _group.limitMode)
            {
                UndoHelper.RecordObjectPropertyForUndo(_group, "change Replay Limit Mode");
                _group.limitMode = newLimitMode;
            }

            switch (_group.limitMode)
            {
            case MasterAudioGroup.LimitMode.FrameBased:
                var newFrameLimit = EditorGUILayout.IntSlider("Min Frames Between", _group.limitPerXFrames, 1, 120);
                if (newFrameLimit != _group.limitPerXFrames)
                {
                    UndoHelper.RecordObjectPropertyForUndo(_group, "change Min Frames Between");
                    _group.limitPerXFrames = newFrameLimit;
                }
                break;

            case MasterAudioGroup.LimitMode.TimeBased:
                var newMinTime = EditorGUILayout.Slider("Min Seconds Between", _group.minimumTimeBetween, 0.1f, 10f);
                if (newMinTime != _group.minimumTimeBetween)
                {
                    UndoHelper.RecordObjectPropertyForUndo(_group, "change Min Seconds Between");
                    _group.minimumTimeBetween = newMinTime;
                }
                break;
            }
            break;

        case MasterAudioGroup.VariationMode.LoopedChain:
            DTGUIHelper.ShowColorWarning("*In this mode, only one Variation can be played at a time.");

            var newLoopMode = (MasterAudioGroup.ChainedLoopLoopMode)EditorGUILayout.EnumPopup("Loop Mode", _group.chainLoopMode);
            if (newLoopMode != _group.chainLoopMode)
            {
                UndoHelper.RecordObjectPropertyForUndo(_group, "change Loop Mode");
                _group.chainLoopMode = newLoopMode;
            }

            if (_group.chainLoopMode == MasterAudioGroup.ChainedLoopLoopMode.NumberOfLoops)
            {
                var newLoopCount = EditorGUILayout.IntSlider("Number of Loops", _group.chainLoopNumLoops, 1, 500);
                if (newLoopCount != _group.chainLoopNumLoops)
                {
                    UndoHelper.RecordObjectPropertyForUndo(_group, "change Number of Loops");
                    _group.chainLoopNumLoops = newLoopCount;
                }
            }

            var newDelayMin = EditorGUILayout.Slider("Clip Change Delay Min", _group.chainLoopDelayMin, 0f, 20f);
            if (newDelayMin != _group.chainLoopDelayMin)
            {
                if (_group.chainLoopDelayMax < newDelayMin)
                {
                    _group.chainLoopDelayMax = newDelayMin;
                }
                UndoHelper.RecordObjectPropertyForUndo(_group, "change Chained Clip Delay Min");
                _group.chainLoopDelayMin = newDelayMin;
            }

            var newDelayMax = EditorGUILayout.Slider("Clip Change Delay Max", _group.chainLoopDelayMax, 0f, 20f);
            if (newDelayMax != _group.chainLoopDelayMax)
            {
                if (newDelayMax < _group.chainLoopDelayMin)
                {
                    newDelayMax = _group.chainLoopDelayMin;
                }
                UndoHelper.RecordObjectPropertyForUndo(_group, "change Chained Clip Delay Max");
                _group.chainLoopDelayMax = newDelayMax;
            }
            break;

        case MasterAudioGroup.VariationMode.Dialog:
            DTGUIHelper.ShowColorWarning("*In this mode, only one Variation can be played at a time.");

            var newUseDialog = EditorGUILayout.Toggle("Dialog Custom Fade?", _group.useDialogFadeOut);
            if (newUseDialog != _group.useDialogFadeOut)
            {
                UndoHelper.RecordObjectPropertyForUndo(_group, "toggle Dialog Custom Fade?");
                _group.useDialogFadeOut = newUseDialog;
            }

            if (_group.useDialogFadeOut)
            {
                var newFadeTime = EditorGUILayout.Slider("Custom Fade Out Time", _group.dialogFadeOutTime, 0.1f, 20f);
                if (newFadeTime != _group.dialogFadeOutTime)
                {
                    UndoHelper.RecordObjectPropertyForUndo(_group, "change Custom Fade Out Time");
                    _group.dialogFadeOutTime = newFadeTime;
                }
            }
            break;
        }

        EditorGUI.indentLevel = 0;
        if (MasterAudio.Instance.prioritizeOnDistance)
        {
            var newContinual = EditorGUILayout.Toggle("Use Clip Age Priority", _group.useClipAgePriority);
            if (newContinual != _group.useClipAgePriority)
            {
                UndoHelper.RecordObjectPropertyForUndo(_group, "toggle Use Clip Age Priority");
                _group.useClipAgePriority = newContinual;
            }
        }

        var newBulkMode = (MasterAudio.AudioLocation)EditorGUILayout.EnumPopup("Variation Create Mode", _group.bulkVariationMode);

        if (newBulkMode != _group.bulkVariationMode)
        {
            UndoHelper.RecordObjectPropertyForUndo(_group, "change Bulk Variation Mode");
            _group.bulkVariationMode = newBulkMode;
        }
        if (_group.bulkVariationMode == MasterAudio.AudioLocation.ResourceFile)
        {
            DTGUIHelper.ShowColorWarning("*Resource mode: make sure to drag from Resource folders only.");
        }

        var newLog = EditorGUILayout.Toggle("Log Sounds", _group.logSound);

        if (newLog != _group.logSound)
        {
            UndoHelper.RecordObjectPropertyForUndo(_group, "toggle Log Sounds");
            _group.logSound = newLog;
        }

        int?deadChildIndex = null;

        if (!Application.isPlaying)
        {
            EditorGUILayout.BeginHorizontal();
            GUILayout.Space(4);
            GUILayout.Label("Actions", EditorStyles.wordWrappedLabel, GUILayout.Width(50f));
            GUILayout.Space(96);
            GUI.contentColor = Color.green;
            if (GUILayout.Button(new GUIContent("Equalize Weights", "Reset Weights to one"), EditorStyles.toolbarButton, GUILayout.Width(120)))
            {
                isDirty = true;
                EqualizeWeights(_group);
            }

            GUILayout.Space(10);
            if (GUILayout.Button(new GUIContent("Equalize Variation Volumes"), EditorStyles.toolbarButton, GUILayout.Width(150)))
            {
                EqualizeVariationVolumes(_group.groupVariations);
            }

            GUI.contentColor = Color.white;
            EditorGUILayout.EndHorizontal();
            EditorGUILayout.Separator();
        }

        if (!Application.isPlaying)
        {
            // new variation settings
            EditorGUILayout.BeginVertical();
            var anEvent = Event.current;

            GUI.color = Color.yellow;

            if (isInProjectView)
            {
                DTGUIHelper.ShowLargeBarAlert("*You are in Project View and cannot create Variations.");
                DTGUIHelper.ShowLargeBarAlert("*Pull this prefab into the Scene to create Variations.");
            }
            else
            {
                var dragArea = GUILayoutUtility.GetRect(0f, 35f, GUILayout.ExpandWidth(true));
                GUI.Box(dragArea, "Drag Audio clips here to create Variations!");

                GUI.color = Color.white;

                switch (anEvent.type)
                {
                case EventType.DragUpdated:
                case EventType.DragPerform:
                    if (!dragArea.Contains(anEvent.mousePosition))
                    {
                        break;
                    }

                    DragAndDrop.visualMode = DragAndDropVisualMode.Copy;

                    if (anEvent.type == EventType.DragPerform)
                    {
                        DragAndDrop.AcceptDrag();

                        foreach (var dragged in DragAndDrop.objectReferences)
                        {
                            var aClip = dragged as AudioClip;
                            if (aClip == null)
                            {
                                continue;
                            }

                            CreateVariation(_group, ma, aClip);
                        }
                    }
                    Event.current.Use();
                    break;
                }
            }
            EditorGUILayout.EndVertical();
            // end new variation settings
        }

        if (_group.groupVariations.Count == 0)
        {
            DTGUIHelper.ShowRedError("You currently have no Variations.");
        }
        else
        {
            _group.groupVariations.Sort(delegate(SoundGroupVariation x, SoundGroupVariation y) {
                return(x.name.CompareTo(y.name));
            });

            for (var i = 0; i < _group.groupVariations.Count; i++)
            {
                var variation = _group.groupVariations[i];
                EditorGUILayout.BeginHorizontal(EditorStyles.objectFieldThumb);
                EditorGUILayout.LabelField(variation.name, EditorStyles.boldLabel);

                GUILayout.FlexibleSpace();

                if (GUILayout.Button(new GUIContent(MasterAudioInspectorResources.gearTexture, "Click to goto Variation"), EditorStyles.toolbarButton, GUILayout.Width(40)))
                {
                    Selection.activeObject = variation;
                }

                if (!Application.isPlaying)
                {
                    if (GUILayout.Button(new GUIContent(MasterAudioInspectorResources.deleteTexture, "Click to delete this Variation"), EditorStyles.toolbarButton, GUILayout.Width(40)))
                    {
                        deadChildIndex = i;
                        isDirty        = true;
                    }
                }

                var buttonPressed = DTGUIHelper.AddVariationButtons();
                switch (buttonPressed)
                {
                case DTGUIHelper.DTFunctionButtons.Play:
                    if (Application.isPlaying)
                    {
                        MasterAudio.PlaySound(_group.name, 1f, null, 0f, variation.name);
                    }
                    else
                    {
                        if (variation.audLocation == MasterAudio.AudioLocation.ResourceFile)
                        {
                            MasterAudio.PreviewerInstance.Stop();
                            MasterAudio.PreviewerInstance.PlayOneShot(Resources.Load(variation.resourceFileName) as AudioClip);
                        }
                        else
                        {
                            variation.audio.Stop();
                            variation.audio.Play();
                        }
                    }
                    break;

                case DTGUIHelper.DTFunctionButtons.Stop:
                    if (Application.isPlaying)
                    {
                        MasterAudio.StopAllOfSound(_group.name);
                    }
                    else
                    {
                        if (variation.audLocation == MasterAudio.AudioLocation.ResourceFile)
                        {
                            MasterAudio.PreviewerInstance.Stop();
                        }
                        else
                        {
                            variation.audio.Stop();
                        }
                    }
                    break;
                }

                EditorGUILayout.EndHorizontal();

                if (!Application.isPlaying)
                {
                    DTGUIHelper.ShowColorWarning("*Fading & random settings are ignored by preview in edit mode.");
                }
                if (variation.audio == null)
                {
                    DTGUIHelper.ShowRedError(string.Format("The Variation: '{0}' has no Audio Source.", variation.name));
                    break;
                }

                var oldLocation = variation.audLocation;
                var newLocation = (MasterAudio.AudioLocation)EditorGUILayout.EnumPopup("Audio Origin", variation.audLocation);
                if (newLocation != variation.audLocation)
                {
                    UndoHelper.RecordObjectPropertyForUndo(variation, "change Audio Origin");
                    variation.audLocation = newLocation;
                }

                switch (variation.audLocation)
                {
                case MasterAudio.AudioLocation.Clip:
                    var newClip = (AudioClip)EditorGUILayout.ObjectField("Audio Clip", variation.audio.clip, typeof(AudioClip), false);
                    if (newClip != variation.audio.clip)
                    {
                        UndoHelper.RecordObjectPropertyForUndo(variation.audio, "change Audio Clip");
                        variation.audio.clip = newClip;
                    }
                    break;

                case MasterAudio.AudioLocation.ResourceFile:
                    if (oldLocation != variation.audLocation)
                    {
                        if (variation.audio.clip != null)
                        {
                            Debug.Log("Audio clip removed to prevent unnecessary memory usage on Resource file Variation.");
                        }
                        variation.audio.clip = null;
                    }

                    EditorGUILayout.BeginVertical();
                    var anEvent = Event.current;

                    GUI.color = Color.yellow;
                    var dragArea = GUILayoutUtility.GetRect(0f, 20f, GUILayout.ExpandWidth(true));
                    GUI.Box(dragArea, "Drag Resource Audio clip here to use its name!");
                    GUI.color = Color.white;

                    switch (anEvent.type)
                    {
                    case EventType.DragUpdated:
                    case EventType.DragPerform:
                        if (!dragArea.Contains(anEvent.mousePosition))
                        {
                            break;
                        }

                        DragAndDrop.visualMode = DragAndDropVisualMode.Copy;

                        if (anEvent.type == EventType.DragPerform)
                        {
                            DragAndDrop.AcceptDrag();

                            foreach (var dragged in DragAndDrop.objectReferences)
                            {
                                var aClip = dragged as AudioClip;
                                if (aClip == null)
                                {
                                    continue;
                                }

                                UndoHelper.RecordObjectPropertyForUndo(variation, "change Resource Filename");
                                var resourceFileName = DTGUIHelper.GetResourcePath(aClip);
                                if (string.IsNullOrEmpty(resourceFileName))
                                {
                                    resourceFileName = aClip.name;
                                }

                                variation.resourceFileName = resourceFileName;
                            }
                        }
                        Event.current.Use();
                        break;
                    }
                    EditorGUILayout.EndVertical();

                    var newFilename = EditorGUILayout.TextField("Resource Filename", variation.resourceFileName);
                    if (newFilename != variation.resourceFileName)
                    {
                        UndoHelper.RecordObjectPropertyForUndo(variation, "change Resource Filename");
                        variation.resourceFileName = newFilename;
                    }
                    break;
                }

                var newVolume = EditorGUILayout.Slider("Volume", variation.audio.volume, 0f, 1f);
                if (newVolume != variation.audio.volume)
                {
                    UndoHelper.RecordObjectPropertyForUndo(variation.audio, "change Volume");
                    variation.audio.volume = newVolume;
                }

                var newPitch = EditorGUILayout.Slider("Pitch", variation.audio.pitch, -3f, 3f);
                if (newPitch != variation.audio.pitch)
                {
                    UndoHelper.RecordObjectPropertyForUndo(variation.audio, "change Pitch");
                    variation.audio.pitch = newPitch;
                }

                var newLoop = EditorGUILayout.Toggle("Loop Clip", variation.audio.loop);
                if (newLoop != variation.audio.loop)
                {
                    UndoHelper.RecordObjectPropertyForUndo(variation.audio, "toggle Loop Clip");
                    variation.audio.loop = newLoop;
                }

                EditorUtility.SetDirty(variation.audio);
                EditorUtility.SetDirty(variation);

                var newWeight = EditorGUILayout.IntSlider("Weight (Instances)", variation.weight, 0, 100);
                if (newWeight != variation.weight)
                {
                    UndoHelper.RecordObjectPropertyForUndo(variation, "change Weight");
                    variation.weight = newWeight;
                }

                if (variation.HasActiveFXFilter)
                {
                    var newFxTailTime = EditorGUILayout.Slider("FX Tail Time", variation.fxTailTime, 0f, 10f);
                    if (newFxTailTime != variation.fxTailTime)
                    {
                        UndoHelper.RecordObjectPropertyForUndo(variation, "change FX Tail Time");
                        variation.fxTailTime = newFxTailTime;
                    }
                }

                var newUseRndPitch = EditorGUILayout.BeginToggleGroup("Use Random Pitch", variation.useRandomPitch);
                if (newUseRndPitch != variation.useRandomPitch)
                {
                    UndoHelper.RecordObjectPropertyForUndo(variation, "toggle Use Random Pitch");
                    variation.useRandomPitch = newUseRndPitch;
                }

                if (variation.useRandomPitch)
                {
                    var newMode = (SoundGroupVariation.RandomPitchMode)EditorGUILayout.EnumPopup("Pitch Compute Mode", variation.randomPitchMode);
                    if (newMode != variation.randomPitchMode)
                    {
                        UndoHelper.RecordObjectPropertyForUndo(variation, "change Pitch Compute Mode");
                        variation.randomPitchMode = newMode;
                    }

                    var newPitchMin = EditorGUILayout.Slider("Random Pitch Min", variation.randomPitchMin, -3f, 3f);
                    if (newPitchMin != variation.randomPitchMin)
                    {
                        UndoHelper.RecordObjectPropertyForUndo(variation, "change Random Pitch Min");
                        variation.randomPitchMin = newPitchMin;
                        if (variation.randomPitchMax <= variation.randomPitchMin)
                        {
                            variation.randomPitchMax = variation.randomPitchMin;
                        }
                    }

                    var newPitchMax = EditorGUILayout.Slider("Random Pitch Max", variation.randomPitchMax, -3f, 3f);
                    if (newPitchMax != variation.randomPitchMax)
                    {
                        UndoHelper.RecordObjectPropertyForUndo(variation, "change Random Pitch Max");
                        variation.randomPitchMax = newPitchMax;
                        if (variation.randomPitchMin > variation.randomPitchMax)
                        {
                            variation.randomPitchMin = variation.randomPitchMax;
                        }
                    }
                }

                EditorGUILayout.EndToggleGroup();

                var newUseRndVol = EditorGUILayout.BeginToggleGroup("Use Random Volume", variation.useRandomVolume);
                if (newUseRndVol != variation.useRandomVolume)
                {
                    UndoHelper.RecordObjectPropertyForUndo(variation, "toggle Use Random Volume");
                    variation.useRandomVolume = newUseRndVol;
                }

                if (variation.useRandomVolume)
                {
                    var newMode = (SoundGroupVariation.RandomVolumeMode)EditorGUILayout.EnumPopup("Volume Compute Mode", variation.randomVolumeMode);
                    if (newMode != variation.randomVolumeMode)
                    {
                        UndoHelper.RecordObjectPropertyForUndo(variation, "change Volume Compute Mode");
                        variation.randomVolumeMode = newMode;
                    }

                    var volMin = 0f;
                    if (variation.randomVolumeMode == SoundGroupVariation.RandomVolumeMode.AddToClipVolume)
                    {
                        volMin = -1f;
                    }

                    var newVolMin = EditorGUILayout.Slider("Random Volume Min", variation.randomVolumeMin, volMin, 1f);
                    if (newVolMin != variation.randomVolumeMin)
                    {
                        UndoHelper.RecordObjectPropertyForUndo(variation, "change Random Volume Min");
                        variation.randomVolumeMin = newVolMin;
                        if (variation.randomVolumeMax <= variation.randomVolumeMin)
                        {
                            variation.randomVolumeMax = variation.randomVolumeMin;
                        }
                    }

                    var newVolMax = EditorGUILayout.Slider("Random Volume Max", variation.randomVolumeMax, volMin, 1f);
                    if (newVolMax != variation.randomVolumeMax)
                    {
                        UndoHelper.RecordObjectPropertyForUndo(variation, "change Random Volume Max");
                        variation.randomVolumeMax = newVolMax;
                        if (variation.randomVolumeMin > variation.randomVolumeMax)
                        {
                            variation.randomVolumeMin = variation.randomVolumeMax;
                        }
                    }
                }

                EditorGUILayout.EndToggleGroup();

                var newSilence = EditorGUILayout.BeginToggleGroup("Use Random Delay", variation.useIntroSilence);
                if (newSilence != variation.useIntroSilence)
                {
                    UndoHelper.RecordObjectPropertyForUndo(variation, "toggle Use Random Delay");
                    variation.useIntroSilence = newSilence;
                }

                if (variation.useIntroSilence)
                {
                    var newSilenceMin = EditorGUILayout.Slider("Delay Min (sec)", variation.introSilenceMin, 0f, 100f);
                    if (newSilenceMin != variation.introSilenceMin)
                    {
                        UndoHelper.RecordObjectPropertyForUndo(variation, "change Delay Min (sec)");
                        variation.introSilenceMin = newSilenceMin;
                        if (variation.introSilenceMin > variation.introSilenceMax)
                        {
                            variation.introSilenceMax = newSilenceMin;
                        }
                    }

                    var newSilenceMax = EditorGUILayout.Slider("Delay Max (sec)", variation.introSilenceMax, 0f, 100f);
                    if (newSilenceMax != variation.introSilenceMax)
                    {
                        UndoHelper.RecordObjectPropertyForUndo(variation, "change Delay Max (sec)");
                        variation.introSilenceMax = newSilenceMax;
                        if (variation.introSilenceMax < variation.introSilenceMin)
                        {
                            variation.introSilenceMin = newSilenceMax;
                        }
                    }
                }

                EditorGUILayout.EndToggleGroup();

                var newFades = EditorGUILayout.BeginToggleGroup("Use Custom Fading", variation.useFades);
                if (newFades != variation.useFades)
                {
                    UndoHelper.RecordObjectPropertyForUndo(variation, "toggle Use Custom Fading");
                    variation.useFades = newFades;
                }

                if (variation.useFades)
                {
                    var newFadeIn = EditorGUILayout.Slider("Fade In Time (sec)", variation.fadeInTime, 0f, 10f);
                    if (newFadeIn != variation.fadeInTime)
                    {
                        UndoHelper.RecordObjectPropertyForUndo(variation, "change Fade In Time");
                        variation.fadeInTime = newFadeIn;
                    }

                    var newFadeOut = EditorGUILayout.Slider("Fade Out time (sec)", variation.fadeOutTime, 0f, 10f);
                    if (newFadeOut != variation.fadeOutTime)
                    {
                        UndoHelper.RecordObjectPropertyForUndo(variation, "change Fade Out Time");
                        variation.fadeOutTime = newFadeOut;
                    }
                }
                EditorGUILayout.EndToggleGroup();

                EditorGUILayout.Separator();
            }
        }

        if (deadChildIndex.HasValue)
        {
            var deadVar = _group.groupVariations[deadChildIndex.Value];

            if (deadVar != null)
            {
                // delete variation from Hierarchy
                GameObject.DestroyImmediate(deadVar.gameObject);
            }

            // delete group.
            _group.groupVariations.RemoveAt(deadChildIndex.Value);
        }

        if (GUI.changed || isDirty)
        {
            EditorUtility.SetDirty(target);
        }

        //DrawDefaultInspector();
    }