Fix import and export for blender 2.63

Blender 2.63 should be out in a few days. Nice to get this ready ahead of
time.

tools/io_mesh_qfmdl/export_mdl.py

@@ -32,7 +32,7 @@ def check_faces(mesh):
     #quad to tri conversion will not be done automatically.
     faces_ok = True
     save_select = []
-    for f in mesh.faces:
+    for f in mesh.polygons:
         save_select.append(f.select)
         f.select = False
         if len(f.vertices) > 3:
@@ -42,7 +42,7 @@ def check_faces(mesh):
         mesh.update()
         return False
     #reset selection to what it was before the check.
-    for f, s in map(lambda x, y: (x, y), mesh.faces, save_select):
+    for f, s in map(lambda x, y: (x, y), mesh.polygons, save_select):
         f.select = s
     mesh.update()
     return True
@@ -94,14 +94,15 @@ def build_tris(mesh):
     # the layout. However, there seems to be nothing in the mdl format
     # preventing the use of duplicate 3d vertices to allow complete freedom
     # of the UV layout.
-    uvfaces = mesh.uv_textures[0].data
+    uvfaces = mesh.uv_loop_layers[0].data
     stverts = []
     tris = []
     vertmap = []    # map mdl vert num to blender vert num (for 3d verts)
     uvdict = {}
-    for face, uvface in map(lambda a,b: (a,b), mesh.faces, uvfaces):
+    for face in mesh.polygons:
         fv = list(face.vertices)
-        uv = list(uvface.uv)
+        uv = uvfaces[face.loop_start:face.loop_start + face.loop_total]
+        uv = list(map(lambda a: a.uv, uv))
         # blender's and quake's vertex order seem to be opposed
         fv.reverse()
         uv.reverse()

tools/io_mesh_qfmdl/import_mdl.py

@@ -100,13 +100,13 @@ def setup_skins (mdl, uvs):
     load_skins (mdl)
     img = mdl.images[0]   # use the first skin for now
     uvlay = mdl.mesh.uv_textures.new(mdl.name)
-    for i, f in enumerate(uvlay.data):
+    uvloop = mdl.mesh.uv_loop_layers[0]
+    for i, texpoly in enumerate(uvlay.data):
+        poly = mdl.mesh.polygons[i]
         mdl_uv = uvs[i]
-        for j, uv in enumerate(f.uv):
-            uv[0], uv[1] = mdl_uv[j]
-        f.image = img
-        if hasattr(f, "use_image"):     # for older blender
-            f.use_image = True
+        texpoly.image = img
+        for j,k in enumerate(poly.loop_indices):
+            uvloop.data[k].uv = mdl_uv[j]
     mat = bpy.data.materials.new(mdl.name)
     mat.diffuse_color = (1,1,1)
     mat.use_raytrace = False