public static void CreateGroups(List <AudioSource> sources, AudioMixer mixer, AudioMixerGroup parentGroup = null)
{
System.Type window = PulpobotUtils.GetEditorWindowType("AudioMixerWindow");
if (window != null)
{
//Open an AudioMixer Window, so we have an instance from where to obtain the mixer controllers
Type auxioMixerWindowType = window.UnderlyingSystemType;
EditorWindow audioMixerWindow = GetWindow(auxioMixerWindowType, false, "Audio Mixer Window");
audioMixerWindow.Show(true);
auxioMixerWindowType = audioMixerWindow.GetType();
//Force the window to init
MethodInfo initMethodInfo = auxioMixerWindowType.GetMethod("Init", BindingFlags.NonPublic | BindingFlags.Instance);
initMethodInfo.Invoke(audioMixerWindow, null);
//Obtain the AudioMixerGroupTreeView that contains the editor function to manage groups
FieldInfo groupTreeField = auxioMixerWindowType.GetField("m_GroupTree", BindingFlags.Instance | BindingFlags.NonPublic);
System.Object groupTree = groupTreeField.GetValue(audioMixerWindow);
Type groupTreeType = groupTree.GetType(); //AudioMixerGroupTreeView
//SNIPPET: class AudioMixerController : AudioMixer
FieldInfo controllerFieldInfo = groupTreeType.GetField("m_Controller", BindingFlags.NonPublic | BindingFlags.Instance);
controllerFieldInfo.SetValue(groupTree, mixer);
System.Object controller = controllerFieldInfo.GetValue(groupTree);
//Find the master group if needed
System.Object masterGroup = parentGroup;
if (masterGroup == null)
{
PropertyInfo masterGroupProperty = controller.GetType().GetProperty("masterGroup", BindingFlags.Public | BindingFlags.Instance);
masterGroup = masterGroupProperty.GetValue(controller, null);
}
//Create a new group per audio source
for (int i = 0; i < sources.Count; i++)
{
MethodInfo groupFunction = controller.GetType().GetMethod("CreateNewGroup", BindingFlags.Public | BindingFlags.Instance);
System.Object newGroup = groupFunction.Invoke(controller, new object[] { sources[i].name, true });
//Add the new created group to the parent group
groupFunction = controller.GetType().GetMethod("AddChildToParent", BindingFlags.Public | BindingFlags.Instance);
groupFunction.Invoke(controller, new object[] { newGroup, masterGroup });
//Add the group to the current view to it shows up correctly
groupFunction = controller.GetType().GetMethod("AddGroupToCurrentView", BindingFlags.Public | BindingFlags.Instance);
groupFunction.Invoke(controller, new object[] { newGroup });
sources[i].outputAudioMixerGroup = newGroup as AudioMixerGroup;
}
//Set the new controller to the window
FieldInfo windowControllerField = auxioMixerWindowType.GetField("m_Controller", BindingFlags.Instance | BindingFlags.NonPublic);
windowControllerField.SetValue(audioMixerWindow, controller);
//Force Repaint the mixer window
windowControllerField = auxioMixerWindowType.GetField("m_Initialized", BindingFlags.Instance | BindingFlags.NonPublic);
windowControllerField.SetValue(audioMixerWindow, false);
MethodInfo repaintFunction = auxioMixerWindowType.GetMethod("Init", BindingFlags.NonPublic | BindingFlags.Instance);
repaintFunction.Invoke(audioMixerWindow, null);
}
}
void OnGUI()
{
if (openMixerNextFrame)
{
System.Type window = PulpobotUtils.GetEditorWindowType("AudioMixerWindow");
Type auxioMixerWindowType = window.UnderlyingSystemType;
EditorWindow audioMixerWindow = GetWindow(auxioMixerWindowType, false, "Audio Mixer Window");
audioMixerWindow.Show(true);
auxioMixerWindowType = audioMixerWindow.GetType();
openMixerNextFrame = false;
}
EditorGUILayout.HelpBox("This tool creates an AudioGroup per AaudioSource selected in the scene", MessageType.Info);
GUILayout.Space(5);
GUILayout.Label("Choose an AudioMixer from the project");
EditorGUI.BeginChangeCheck();
mixer = EditorGUILayout.ObjectField("Mixer ", mixer, typeof(AudioMixer), true) as AudioMixer;
GUILayout.Space(10);
if (EditorGUI.EndChangeCheck())
{
if (mixer != null)
{
parentGroup = mixer.FindMatchingGroups("Master")[0];
}
}
EditorGUI.BeginDisabledGroup(mixer == null || Selection.activeTransform == null);
EditorGUI.BeginChangeCheck();
parentGroup = EditorGUILayout.ObjectField("Parent Mixer Group", parentGroup, typeof(AudioMixerGroup), true) as AudioMixerGroup;
if (EditorGUI.EndChangeCheck())
{
if (parentGroup == null)
{
parentGroup = mixer.FindMatchingGroups("Master")[0];
}
else
{
mixer = parentGroup.audioMixer;
}
}
EditorGUI.EndDisabledGroup();
if (Selection.activeTransform == null)
{
EditorGUILayout.HelpBox("Select a gameobject in the scene", MessageType.Warning);
}
EditorGUI.BeginDisabledGroup(mixer == null || Selection.activeTransform == null);
if (GUILayout.Button("Create Groups"))
{
if (Selection.activeTransform != null)
{
List <AudioSource> sources = new List <AudioSource>(Selection.GetFiltered <AudioSource>(SelectionMode.Editable));
if (sources.Count == 0)
{
PulpobotUtils.GetAllChildsOfTypeRecursively <AudioSource>(Selection.activeTransform, ref sources);
}
CreateGroups(sources, mixer, parentGroup);
openMixerNextFrame = true;
}
}
EditorGUI.EndDisabledGroup();
}
