communicate between maya and unity with a file

Maya creates file on review, Unity checks if file exists, reviews if it
does, then deletes the file.

Author: vkovec

Assets/FbxExporters/Editor/InstallIntegration.cs

@@ -16,6 +16,8 @@ class Integrations
 
         private const string FBX_EXPORT_SETTINGS_PATH = "Integrations/Autodesk/maya/scripts/unityFbxExportSettings.mel";
 
+        private const string MAYA_INSTRUCTION_FILENAME = "_safe_to_delete/_temp.txt";
+
         public class MayaException : System.Exception {
             public MayaException() { }
             public MayaException(string message) : base(message) { }
@@ -177,8 +179,9 @@ static string AskVersion(string exePath) {
 #endif
 
         private static string MAYA_COMMANDS { get {
-                return string.Format("configureUnityOneClick {0}{1}{0} {0}{2}{0} {0}{3}{0} {0}{4}{0} {5}; scriptJob -idleEvent quit;",
-                    ESCAPED_QUOTE, GetProjectPath(), GetAppPath(), GetTempSavePath(), GetExportSettingsPath(), (IsHeadlessInstall()?1:0));
+                return string.Format("configureUnityOneClick {0}{1}{0} {0}{2}{0} {0}{3}{0} {0}{4}{0} {0}{5}{0} {6}; scriptJob -idleEvent quit;",
+                    ESCAPED_QUOTE, GetProjectPath(), GetAppPath(), GetTempSavePath(),
+                    GetExportSettingsPath(), GetMayaInstructionPath(), (IsHeadlessInstall()?1:0));
         }}
         private static Char[] FIELD_SEPARATORS = new Char[] {':'};
 
@@ -251,6 +254,20 @@ public static string GetTempSavePath()
             return FbxExporters.Review.TurnTable.TempSavePath.Replace("\\", "/");
         }
 
+        public static string GetMayaInstructionPath()
+        {
+            return MAYA_INSTRUCTION_FILENAME;
+        }
+
+        /// <summary>
+        /// Gets the full maya instruction path as an absolute Unity path.
+        /// </summary>
+        /// <returns>The full maya instruction path.</returns>
+        public static string GetFullMayaInstructionPath()
+        {
+            return Application.dataPath + "/" + FbxExporters.Editor.Integrations.GetMayaInstructionPath ();
+        }
+
         /// <summary>
         /// Gets the path to the export settings file.
         /// Returns a relative path with forward slashes as path separators.

Assets/FbxExporters/Editor/ReviewLastSavedModel.cs

@@ -24,6 +24,20 @@ public class TurnTable
             static string LastFilePath = null;
             static Object LastModel = null;
 
+            static TurnTable(){
+                UnityEditor.EditorApplication.update -= OnEditorUpdate;
+                UnityEditor.EditorApplication.update += OnEditorUpdate;
+            }
+
+            private static void OnEditorUpdate()
+            {
+                string instructionFile = FbxExporters.Editor.Integrations.GetFullMayaInstructionPath ();
+                if(System.IO.File.Exists(instructionFile)){
+                    LastSavedModel ();
+                    System.IO.File.Delete (instructionFile);
+                }
+            }
+
             private static System.IO.FileInfo GetLastSavedFile (string directoryPath, string ext = ".fbx")
             {
                 System.IO.DirectoryInfo directoryInfo = new System.IO.DirectoryInfo (directoryPath);
@@ -100,12 +114,8 @@ private static Object LoadModel (string fbxFileName)
                     }
 
                     modelGO.transform.parent = turntableGO.transform;
-
-                    UnityEditor.Selection.objects = new GameObject[]{ turntableGO };
                 }
 
-                FrameCameraOnModel (modelGO);
-
                 return modelGO as Object;
             }
 
@@ -124,6 +134,10 @@ private static Bounds GetRendererBounds(GameObject modelGO)
 
             private static void FrameCameraOnModel(GameObject modelGO)
             {
+                if (modelGO == null) {
+                    return;
+                }
+
                 // Set so camera frames model
                 // Note: this code assumes the model is at 0,0,0
                 Vector3 boundsSize = GetRendererBounds(modelGO).size;
@@ -155,6 +169,14 @@ private static void LoadLastSavedModel ()
                         Debug.LogWarning (string.Format ("failed to load model : {0}", fbxFileName));
                     }
                 }
+                if (LastModel != null) {
+                    var model = LastModel as GameObject;
+                    if (model != null) {
+                        var turntable = model.transform.parent.gameObject;
+                        UnityEditor.Selection.objects = new GameObject[]{ turntable };
+                        FrameCameraOnModel (turntable);
+                    }
+                }
             }
 
             public static void LastSavedModel ()

Assets/Integrations/Autodesk/maya/scripts/configureUnityOneClick.mel

@@ -1,12 +1,14 @@
 global proc configureUnityOneClick(
     string $unityProject, string $unityApp,
-    string $unityTempSavePath, string $unityFbxExportSettings, int $headless)
+    string $unityTempSavePath, string $unityFbxExportSettings,
+    string $mayaInstructionPath, int $headless)
 {
     // configure plugin settings
     optionVar -stringValue "UnityApp" $unityApp;
     optionVar -stringValue "UnityProject" $unityProject;
     optionVar -stringValue "UnityTempSavePath" $unityTempSavePath;
     optionVar -stringValue "UnityFbxExportSettings" $unityFbxExportSettings;
+    optionVar -stringValue "UnityInstructionPath" $mayaInstructionPath;
     optionVar -intValue "UnityOneClick_Headless" $headless;
 
     // configure auto load of plugin

Assets/Integrations/Autodesk/maya/scripts/unityOneClick/commands.py

@@ -269,6 +269,7 @@ def doIt(self, args):
         unityProjectPath = maya.cmds.optionVar(q='UnityProject')
         unityTempSavePath = os.path.join(unityProjectPath, "Assets", maya.cmds.optionVar(q='UnityTempSavePath'))
         unityCommand = "FbxExporters.Review.TurnTable.LastSavedModel"
+        instructionFile = os.path.join(unityProjectPath, "Assets", maya.cmds.optionVar(q='UnityInstructionPath'))
 
         if not self.loadUnityFbxExportSettings():
             return
@@ -290,6 +291,10 @@ def doIt(self, args):
 
         maya.cmds.file(savePath, force=True, options="", typ="FBX export", pr=True, es=True)
 
+        # create temp file in _safe_to_delete/
+        with open(instructionFile,"w+") as f:
+            pass
+        
         if maya.cmds.about(macOS=True):
             # Use 'open -a' to bring app to front if it has already been started.
             # Note that the unity command will not get called.