blender exporter python addon + convex collision gn

AssetSources/Meshes/UnrealExporter.py

@@ -92,19 +92,38 @@ class OBJECT_OT_CombineExport(bpy.types.Operator):
         return {'FINISHED'}
 
 def SeparateExport(exportFolder):
+    #collection_collision_export = bpy.ops.collection.create("Collision.Export")
+    collection_collision_export = bpy.data.collections.new("Collision.Export")
+    bpy.context.scene.collection.children.link(collection_collision_export)
     objects = bpy.data.collections[bpy.context.scene.ue_exporter.source_collection].all_objects
     #for some absurd logic it works only if objects comes from the selection, no time to explain...
-    for object in objects:
-        object.select_set(True)
-    objects = bpy.context.selected_objects 
+    #for object in objects:
+    #    object.select_set(True)
+    #objects = bpy.context.selected_objects 
     bpy.ops.object.select_all(action='DESELECT')  
-    for object in objects:
-        object.select_set(True)
+    for object in list(objects):
         if object.type not in ['MESH']:
             continue
+        collision = bpy.data.objects['UCX_' + object.name]
+        export_collision = collision.copy()
+        export_collision.data = collision.data.copy()
+        export_collision.animation_data_clear()
+        bpy.context.collection.objects.link(export_collision)
+        #bpy.data.collections['Collision.Export'].objects.link(export_collision)
+        collection_collision_export.objects.link(export_collision)
+        export_collision.select_set(True)
+        bpy.context.view_layer.objects.active = export_collision
+        bpy.ops.object.modifier_apply(modifier='GeometryNodes')
+        bpy.ops.mesh.separate(type='LOOSE')
+        object.select_set(True)
         exportName = bpy.path.abspath(exportFolder) + object.name + '.fbx'
         bpy.ops.export_scene.fbx(filepath=exportName, use_selection=True, mesh_smooth_type='FACE') 
-        object.select_set(False)       
+        bpy.ops.object.select_all(action='DESELECT')  
+    objects = collection_collision_export.all_objects
+    for object in objects:
+        object.select_set(True)
+    bpy.ops.object.delete()
+    bpy.data.collections.remove(collection_collision_export)       
 
 def CombineExport(exportFolder):
     objects = bpy.data.collections[bpy.context.scene.ue_exporter.source_collection].all_objects
@@ -136,6 +155,20 @@ classes = (
     UEExporterSettings
 )
 
+def apply_modifiers(obj):
+    ctx = bpy.context.copy()
+    ctx['object'] = obj
+    for _, m in enumerate(obj.modifiers):
+        try:
+            ctx['modifier'] = m
+            bpy.ops.object.modifier_apply(ctx, modifier=m.name)
+        except RuntimeError:
+            print(f"Error applying {m.name} to {obj.name}, removing it instead.")
+            obj.modifiers.remove(m)
+
+    for m in obj.modifiers:
+        obj.modifiers.remove(m)
+
 def register():
     for c in classes:
         bpy.utils.register_class(c)