From abba267bb7680386e3ee2b075052fadfe581a0fc Mon Sep 17 00:00:00 2001
From: Gregory Montoir
Date: Tue, 28 Sep 2004 21:42:34 +0000
Subject: use the return value of getZPlanes rather that directly accessing
 _numZBuffer

svn-id: r15333
---
 scumm/gfx.cpp | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/scumm/gfx.cpp b/scumm/gfx.cpp
index f4bbe69e2c..b528a1ae77 100644
--- a/scumm/gfx.cpp
+++ b/scumm/gfx.cpp
@@ -1396,14 +1396,13 @@ void Gdi::drawBMAPBg(const byte *ptr, VirtScreen *vs, int startstrip, int width)
 	}
 	copyVirtScreenBuffers(Common::Rect(vs->w, vs->h));
 
-	if (_numZBuffer <= 1)
+	int numzbuf = getZPlanes(ptr, zplane_list, true);
+	if (numzbuf <= 1)
 		return;
-	
-	getZPlanes(ptr, zplane_list, true);
 
 	uint32 offs;
 	for (int stripnr = 0; stripnr < _numStrips; stripnr++)
-		for (int i = 1; i < _numZBuffer; i++) {
+		for (int i = 1; i < numzbuf; i++) {
 			if (!zplane_list[i])
 				continue;
 
-- 
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