From dbd845c5e6e9af3b85b1d232309d6c6fe6aaddbf Mon Sep 17 00:00:00 2001
From: Guillaume Melquiond <guillaume.melquiond@gmail.com>
Date: Sun, 20 Sep 2009 19:12:59 +0000
Subject: [PATCH] Forced cost function to return a value >= 1.

---
 src/scripting/lua.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/scripting/lua.cpp b/src/scripting/lua.cpp
index 778f962cf98..fe910c955ee 100644
--- a/src/scripting/lua.cpp
+++ b/src/scripting/lua.cpp
@@ -1378,7 +1378,7 @@ double lua_calculator::cost(const map_location &loc, double so_far) const
 
 	double cost = lua_tonumber(L, -1);
 	lua_pop(L, 2);
-	return cost;
+	return !(cost >= 1.) ? 1. : cost;
 }
 
 lua_calculator::~lua_calculator()