From: Stas Sergeev <stsp@aknet.ru>
Date: Tue, 26 Sep 2006 17:46:57 +0000 (+0000)
Subject: better fix for is_valid()
X-Git-Tag: 2.0~195
X-Git-Url: https://jxself.org/git/?p=super-star-trek.git;a=commitdiff_plain;h=a2df241b284e63c0a67dca4df0400439c121987a

better fix for is_valid()
---

diff --git a/src/sst.h b/src/sst.h
index fbaa466..f9676f8 100644
--- a/src/sst.h
+++ b/src/sst.h
@@ -46,7 +46,7 @@ typedef struct {int x; int y;} coord;
 #define same(c1, c2)		((c1.x == c2.x) && (c1.y == c2.y))
 #define distance(c1, c2)	sqrt(square(c1.x - c2.x) + square(c1.y - c2.y))
 #define invalidate(w)		w.x = w.y = 0
-#define is_valid(w)		(w.x != 0 || w.y != 0)
+#define is_valid(w)		(w.x != 0 && w.y != 0)
 
 typedef struct {
     coord w;