From: Markus Armbruster <armbru@pond.sub.org>
Date: Mon, 9 Mar 2009 20:22:03 +0000 (+0100)
Subject: Change fairland island size probability distribution
X-Git-Tag: hvy-plastic-2.0~5
X-Git-Url: http://git.pond.sub.org/?p=empserver;a=commitdiff_plain;h=29d2f5ccfe4d629151c4843f994ac8e9fcc74f58

Change fairland island size probability distribution

Island size is randomly chosen from the interval [1..2*is+1], with
expected value is.  Use two dice to roll the size instead of one.
This makes extreme sizes much less likely.
---

diff --git a/src/util/fairland.c b/src/util/fairland.c
index 8f5f454b8..255183660 100644
--- a/src/util/fairland.c
+++ b/src/util/fairland.c
@@ -821,7 +821,7 @@ grow_islands(void)
 	secs = 0;
 	if (!place_island(c, &x, &y))
 	    return;
-	isiz = 1 + rnd(2 * is - 1);
+	isiz = 1 + rnd(is) + rnd(is);
 	do {
 	    ++secs;
 	    find_coast(c);