add export setting not to export mesh colliders

Author: vkovec

Assets/FbxExporters/Editor/FbxExportSettings.cs

@@ -56,6 +56,12 @@ public override void OnInspectorGUI() {
                 exportSettings.autoUpdaterEnabled
             );
 
+            exportSettings.exportMeshColliders = EditorGUILayout.Toggle(
+                new GUIContent("Export Mesh Colliders:",
+                    "If unchecked, meshes that don't have renderers won't be exported."),
+                exportSettings.exportMeshColliders
+            );
+
             GUILayout.BeginHorizontal();
             EditorGUILayout.LabelField(new GUIContent("Export Format:", "Export the FBX file in the standard binary format." +
                 " Select ASCII to export the FBX file in ASCII format."), GUILayout.Width(LabelWidth - FieldOffset));
@@ -442,6 +448,7 @@ public static string[] DCCVendorLocations
         public bool HideSendToUnityMenu = true;
         public int ExportFormatSelection;
         public bool BakeAnimation = true;
+        public bool exportMeshColliders = false;
 
         public string IntegrationSavePath;
 

Assets/FbxExporters/Editor/FbxExporter.cs

@@ -3492,6 +3492,13 @@ bool ExportMesh (GameObject gameObject, FbxNode fbxNode)
 
                 // If we're here, custom handling didn't work.
                 // Revert to default handling.
+
+                // if user doesn't want to export mesh colliders, and this gameobject doesn't have a renderer
+                // then don't export it.
+                if (!ExportSettings.instance.exportMeshColliders && !gameObject.GetComponent<Renderer>()) {
+                    return false;
+                }
+
                 var meshFilter = defaultComponent as MeshFilter;
                 if (meshFilter) {
                     var renderer = gameObject.GetComponent<Renderer>();