From 6d571c18b8a243f6c2d6aae100deb0051675de69 Mon Sep 17 00:00:00 2001
From: "Eric S. Raymond" <esr@thyrsus.com>
Date: Sun, 25 Jun 2017 18:37:14 -0400
Subject: [PATCH] Magic-number elimination.

---
 main.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/main.c b/main.c
index 733027f..ad2fdb1 100644
--- a/main.c
+++ b/main.c
@@ -25,6 +25,8 @@
 #include "linenoise/linenoise.h"
 #include "newdb.h"
 
+#define DIM(a) (sizeof(a)/sizeof(a[0]))
+
 struct game_t game;
 
 long LNLENG, LNPOSN;
@@ -414,7 +416,7 @@ static bool dwarfmove(void)
                                 !INDEEP(game.newloc) ||
                                 game.newloc == game.odloc[i] ||
                                 (j > 1 && game.newloc == tk[j - 1]) ||
-                                j >= 20 ||
+                                j >= DIM(tk) - 1 ||
                                 game.newloc == game.dloc[i] ||
                                 FORCED(game.newloc) ||
                                 (i == PIRATE && CNDBIT(game.newloc, COND_NOARRR)) ||
-- 
2.31.1