export multiple sets based on selection

go through all selected items on export and determine which set they belong to. Export these sets

Author: vkovec

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

@@ -215,7 +215,7 @@ global proc unityImport(){
 
 global proc unityExport(){
     // get the global variables
-    global string $UnityExportSet;
+    global string $UnityExportSets[];
     global string $UnityFbxFilePathAttr;
     global string $UnityFbxFileNameAttr;
 
@@ -227,24 +227,49 @@ global proc unityExport(){
         return;
     }
 
-    // select the export set for export, if it exists,
-    // otherwise take what is currently selected
     $origSelection = `ls -sl`;
-    if (setExists($UnityExportSet)){
-        select -r -ne $UnityExportSet;
+    if(size($origSelection) <= 0){
+        // nothing selected
+        return;
     }
 
-    $unity_fbx_file_path = getAttribute($UnityExportSet, $UnityFbxFilePathAttr);
-    $unity_fbx_file_name = getAttribute($UnityExportSet, $UnityFbxFileNameAttr);
+    // create temporary set containing selection
+    string $selectedSet = `sets`;
+    $selectedSetList = {$selectedSet};
 
-    $strCmd = "";
-    if ($unity_fbx_file_path != "" && $unity_fbx_file_name != ""){
-        $strCmd = "file -force -options \"\" -typ \"FBX export\" -pr -es \"" + $unity_fbx_file_path + "/" + $unity_fbx_file_name + "\"";
+    $i = 0;
+    string $setsToExport[];
+    for($exportSet in $UnityExportSets){
+        if(!setExists($exportSet)){
+            continue;
+        }
+        
+        if(`sets -isIntersecting $exportSet $selectedSetList`){
+            $setsToExport[$i] = $exportSet;
+            $i++;
+        }
     }
-    else {
-        $strCmd = "SendToUnitySelection";
+    
+    // delete temporary selection set
+    delete $selectedSet;
+    
+    for($unitySet in $setsToExport){
+        print ("exporting set: " + $unitySet);
+    
+        select -r -ne $unitySet;
+        
+        $unity_fbx_file_path = getAttribute($unitySet, $UnityFbxFilePathAttr);
+        $unity_fbx_file_name = getAttribute($unitySet, $UnityFbxFileNameAttr);
+        
+        $strCmd = "";
+        if ($unity_fbx_file_path != "" && $unity_fbx_file_name != ""){
+            $strCmd = "file -force -options \"\" -typ \"FBX export\" -pr -es \"" + $unity_fbx_file_path + "/" + $unity_fbx_file_name + "\"";
+        }
+        else {
+            $strCmd = "SendToUnitySelection";
+        }
+        eval $strCmd;
     }
-    eval $strCmd;
 
     select -cl;
     if (size($origSelection) > 0){