# HG changeset patch
# User Simon Cross <hodgestar@gmail.com>
# Date 1316986376 -7200
# Node ID 73c4985bf72610e54bdc8a8da538f9695b738c46
# Parent  fda360905a1e798b136e46ae6544415d68303b06
Only attempt to place a sprite if there is a sprite class selected.

diff -r fda360905a1e -r 73c4985bf726 mamba/habitats/editor.py
--- a/mamba/habitats/editor.py	Thu Sep 22 17:38:44 2011 +0200
+++ b/mamba/habitats/editor.py	Sun Sep 25 23:32:56 2011 +0200
@@ -507,7 +507,8 @@
             self.level.restart()
         elif self.sprite_mode == 'Edit' and sprite:
             self.edit_sprite(tile_pos, sprite)
-        elif self.sprite_mode == 'Add' and sprite is None:
+        elif (self.sprite_mode == 'Add' and sprite is None
+              and self.sprite_cls is not None):
             self.edit_sprite(tile_pos,
                     (self.sprite_cls_name, self.sprite_cls, None, []))
         return True