Fix #63

korman/exporter/convert.py

@@ -53,7 +53,8 @@ class Exporter:
             self.animation = animation.AnimationConverter(self)
             self.sumfile = sumfile.SumFile()
 
-            # Step 0.9: Init the progress mgr
+            # Step 0.8: Init the progress mgr
+            self.report.progress_add_step("Applying Blender Mods")
             self.report.progress_add_step("Collecting Objects")
             self.report.progress_add_step("Harvesting Actors")
             if self._op.bake_lighting:
@@ -65,6 +66,8 @@ class Exporter:
             self.report.progress_add_step("Composing Geometry")
             self.report.progress_start("EXPORTING AGE")
 
+            # Step 0.9: Apply modifiers to all meshes temporarily.
+            with self.mesh:
                 # Step 1: Create the age info and the pages
                 self._export_age_info()
 

korman/exporter/mesh.py

@@ -111,9 +111,42 @@ class _GeoData:
         self.vertices = []
 
 
-class MeshConverter:
+
+class _MeshManager:
     def __init__(self, exporter):
         self._exporter = weakref.ref(exporter)
+        self._mesh_overrides = {}
+
+    def __enter__(self):
+        report = self._exporter().report
+        report.progress_advance()
+        report.progress_range = len(bpy.data.objects)
+
+        # Some modifiers like "Array" will procedurally generate new geometry that will impact
+        # lightmap generation. The Blender Internal renderer does not seem to be smart enough to
+        # take this into account. Thus, we temporarily apply modifiers to ALL meshes (even ones that
+        # are not exported) such that we can generate proper lighting.
+        scene = bpy.context.scene
+        for i in bpy.data.objects:
+            if i.type == "MESH" and i.is_modified(scene, "RENDER"):
+                # Remember, storing actual pointers to the Blender objects can cause bad things to
+                # happen because Blender's memory management SUCKS!
+                self._mesh_overrides[i.name] = i.data.name
+                i.data = i.to_mesh(scene, True, "RENDER", calc_tessface=False)
+            report.progress_increment()
+        return self
+
+    def __exit__(self, type, value, traceback):
+        data_bos, data_meshes = bpy.data.objects, bpy.data.meshes
+        for obj_name, mesh_name in self._mesh_overrides.items():
+            bo = data_bos.get(obj_name)
+            trash_mesh, bo.data = bo.data, data_meshes.get(mesh_name)
+            data_meshes.remove(trash_mesh)
+
+
+class MeshConverter(_MeshManager):
+    def __init__(self, exporter):
+        super().__init__(exporter)
         self.material = material.MaterialConverter(exporter)
 
         self._dspans = {}
@@ -403,8 +436,11 @@ class MeshConverter:
                 diface.addDrawable(dspan_key, idx)
 
     def _export_mesh(self, bo):
-        # Step 0.7: Update the mesh such that we can do things and schtuff...
-        mesh = bo.to_mesh(bpy.context.scene, True, "RENDER", calc_tessface=True)
+        # Previously, this called bo.to_mesh to apply modifiers. However, due to limitations in the
+        # lightmap generation, this is now done for all modified mesh objects before any Plasma data
+        # is exported.
+        mesh = bo.data
+        mesh.calc_tessface()
 
         # Step 0.8: Figure out which materials are attached to this object. Because Blender is backwards,
         #           we can actually have materials that are None. gotdawgit!!!
@@ -412,7 +448,6 @@ class MeshConverter:
         if not materials:
             return None
 
-        with helpers.TemporaryObject(mesh, bpy.data.meshes.remove):
         # Step 1: Export all of the doggone materials.
         geospans = self._export_material_spans(bo, mesh, materials)