git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@7748 c06c8d41-db1a-0410-9941-cceddc491573
37IYOOUTILE64ZCEJWBJJVUCFL7FEF4YXODZQCAEH5RVQ6B4MO4QC
NCKCO6W5HW7C6OPJG4EVHKQCDX6AL7S4ACORY45STKQTNPMAJ7IQC
X7MFMKQTNZ2IWBFVGS6WQV7NRNKJ3DWQAW2X7IQMFQQXW24AHPZQC
CPBVQFT7NWEYLYD34D5VYZIEOZ32YADXYTSFMS635YNXX4OFIZVAC
ziggurat_furnish(c, entry, exit)
ziggurat_furnish(dgn.point(cx, cy), entry, exit)
if a == nil or b == nil then error("Nil points: " .. debug.traceback()) end
if a == nil or b == nil then
error("Nil points: " .. debug.traceback())
end