From e750222e1317fa7cd7629771e3251c03c57e5e3c Mon Sep 17 00:00:00 2001
From: Robert Vollmert <rvollmert@gmx.net>
Date: Sun, 18 Oct 2009 16:16:05 +0200
Subject: Ensure precalculations are done before find_ray is called.

Fixes BR 2881139.

Arena mode doesn't result in a call to losight() anymore, which
was doing the precalculations before.
---
 crawl-ref/source/los.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/crawl-ref/source/los.cc b/crawl-ref/source/los.cc
index 5c9f9b74c6..13ce0e0608 100644
--- a/crawl-ref/source/los.cc
+++ b/crawl-ref/source/los.cc
@@ -592,6 +592,9 @@ bool _find_ray_se(const coord_def& target, ray_def& ray,
     if (!bds(target))
         return false;
 
+    // Ensure the precalculations have been done.
+    raycast();
+
     const std::vector<cellray> &min = min_cellrays(target);
     ASSERT(min.size() > 0);
     cellray c = min[0]; // XXX: const cellray &c ?
-- 
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