Fix missing colliders in PotS

korman/exporter/physics.py

@@ -13,10 +13,12 @@
 #    You should have received a copy of the GNU General Public License
 #    along with Korman.  If not, see <http://www.gnu.org/licenses/>.
 
+import bpy
 import mathutils
 from PyHSPlasma import *
 import weakref
 
+from ..helpers import TemporaryObject
 from . import utils
 
 class PhysicsConverter:
@@ -24,13 +26,17 @@ class PhysicsConverter:
         self._exporter = weakref.ref(exporter)
 
     def _convert_mesh_data(self, bo, physical, indices=True):
-        mesh = bo.data
+        mesh = bo.to_mesh(bpy.context.scene, True, "RENDER")
-        mesh.update(calc_tessface=indices)
-
-        # Yes, we have to have transform data here, even if we have a CoordInterface
         mat = bo.matrix_world
-        physical.rot = utils.quaternion(mat.to_quaternion())
+
+        with TemporaryObject(mesh, bpy.data.meshes.remove) as mesh:
+            # We can only use the plPhysical xforms if there is a CI...
+            if self._mgr.has_coordiface(bo):
+                mesh.update(calc_tessface=indices)
                 physical.pos = utils.vector3(mat.to_translation())
+                quat = mat.to_quaternion()
+                quat.normalize()
+                physical.rot = utils.quaternion(quat)
 
                 # Physicals can't have scale...
                 scale = mat.to_scale()
@@ -40,6 +46,11 @@ class PhysicsConverter:
                 else:
                     # Dagnabbit...
                     vertices = [hsVector3(i.co.x * scale.x, i.co.y * scale.y, i.co.z * scale.z) for i in mesh.vertices]
+            else:
+                # apply the transform to the physical itself
+                mesh.transform(mat)
+                mesh.update(calc_tessface=indices)
+                vertices = [hsVector3(i.co.x, i.co.y, i.co.z) for i in mesh.vertices]
 
             if indices:
                 indices = []

korman/helpers.py

@@ -32,6 +32,22 @@ class GoodNeighbor:
             setattr(cls, attr, value)
         bpy.context.scene.update()
 
+
+class TemporaryObject:
+    def __init__(self, obj, remove_func):
+        self._obj = obj
+        self._remove_func = remove_func
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, type, value, traceback):
+        self._remove_func(self._obj)
+
+    def __getattr__(self, attr):
+        return getattr(self._obj, attr)
+
+
 def ensure_object_can_bake(bo, toggle):
     """Ensures that we can use Blender's baking operators on this object. Side effect: also ensures
        that the object will enter edit mode when requested."""