while the player is running, and provide a message if it's a trapdoor spider doing it.
git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@8147 c06c8d41-db1a-0410-9941-cceddc491573
7I3W2GQ2USM3JHD7BG24FSIBZDAWUMI24BSEMDQ6PRR3D76SRDDAC