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diff --git a/src/m_bbox.c b/src/m_bbox.c
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+// Emacs style mode select -*- C++ -*-
+//-----------------------------------------------------------------------------
+//
+// $Id: m_bbox.c 4 2005-07-23 16:19:41Z fraggle $
+//
+// Copyright (C) 1993-1996 by id Software, Inc.
+//
+// This source is available for distribution and/or modification
+// only under the terms of the DOOM Source Code License as
+// published by id Software. All rights reserved.
+//
+// The source is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
+// for more details.
+//
+// $Log$
+// Revision 1.1 2005/07/23 16:20:49 fraggle
+// Initial revision
+//
+//
+// DESCRIPTION:
+// Main loop menu stuff.
+// Random number LUT.
+// Default Config File.
+// PCX Screenshots.
+//
+//-----------------------------------------------------------------------------
+
+static const char
+rcsid[] = "$Id: m_bbox.c 4 2005-07-23 16:19:41Z fraggle $";
+
+
+#ifdef __GNUG__
+#pragma implementation "m_bbox.h"
+#endif
+#include "m_bbox.h"
+
+
+
+
+void M_ClearBox (fixed_t *box)
+{
+ box[BOXTOP] = box[BOXRIGHT] = MININT;
+ box[BOXBOTTOM] = box[BOXLEFT] = MAXINT;
+}
+
+void
+M_AddToBox
+( fixed_t* box,
+ fixed_t x,
+ fixed_t y )
+{
+ if (x<box[BOXLEFT])
+ box[BOXLEFT] = x;
+ else if (x>box[BOXRIGHT])
+ box[BOXRIGHT] = x;
+ if (y<box[BOXBOTTOM])
+ box[BOXBOTTOM] = y;
+ else if (y>box[BOXTOP])
+ box[BOXTOP] = y;
+}
+
+
+
+
+