From fb4db0b022489fe70b99f5bdef92c46721f3cfbb Mon Sep 17 00:00:00 2001
From: rubidium <rubidium@openttd.org>
Date: Thu, 2 Jan 2014 11:04:37 +0000
Subject: (svn r26201) -Fix: unscaling by a negative value is the same as
 scaling by a positive number

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

diff --git a/src/spritecache.cpp b/src/spritecache.cpp
index 3ffd74a8c..6d514a8f6 100644
--- a/src/spritecache.cpp
+++ b/src/spritecache.cpp
@@ -162,7 +162,7 @@ uint GetMaxSpriteID()
 
 static bool ResizeSpriteIn(SpriteLoader::Sprite *sprite, ZoomLevel src, ZoomLevel tgt)
 {
-	uint8 scaled_1 = UnScaleByZoom(1, (ZoomLevel)(tgt - src));
+	uint8 scaled_1 = ScaleByZoom(1, (ZoomLevel)(src - tgt));
 
 	/* Check for possible memory overflow. */
 	if (sprite[src].width * scaled_1 > UINT16_MAX || sprite[src].height * scaled_1 > UINT16_MAX) return false;
-- 
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