From 7a70a834627af16460c9ba15ddd29d3e6f4f92c3 Mon Sep 17 00:00:00 2001
From: "Eric S. Raymond" <esr@thyrsus.com>
Date: Tue, 23 Apr 2019 17:59:31 -0400
Subject: [PATCH] Avotd crash due to bad array indexing.

---
 sst.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sst.py b/sst.py
index a2cedc5..a990052 100755
--- a/sst.py
+++ b/sst.py
@@ -2775,7 +2775,8 @@ def nova(nov):
                         finish(FNOVA)
                         return
                     # add in course nova contributes to kicking starship
-                    bump += (game.sector-hits[-1]).sgn()
+                    if hits:
+                        bump += (game.sector-hits[-1]).sgn()
                 elif iquad == 'K': # kill klingon
                     deadkl(neighbor, iquad, neighbor)
                 elif iquad in ('C','S','R'): # Damage/destroy big enemies
-- 
2.31.1