From dbdfdb6d281ec2b7bf197ed6eb52794c9b201070 Mon Sep 17 00:00:00 2001
From: Bill Currie <bill@taniwha.org>
Date: Thu, 7 Mar 2013 18:51:32 +0900
Subject: [PATCH] Add support for PRT2 portal files.

These seem to be identical to PRT1-AM but with a different count order in
the header. Taken from tyrutils-0.5.
---
 tools/qfvis/include/vis.h  |  1 +
 tools/qfvis/source/qfvis.c | 12 ++++++++++++
 2 files changed, 13 insertions(+)

diff --git a/tools/qfvis/include/vis.h b/tools/qfvis/include/vis.h
index 92b96a2f2..398c1cd43 100644
--- a/tools/qfvis/include/vis.h
+++ b/tools/qfvis/include/vis.h
@@ -48,6 +48,7 @@ extern pthread_mutex_t *my_mutex;
 #define	MAX_PORTALS				32768
 #define	PORTALFILE				"PRT1"
 #define	PORTALFILE_AM			"PRT1-AM"
+#define	PORTALFILE2				"PRT2"
 #define	ON_EPSILON				0.1
 #define MAX_POINTS_ON_WINDING	64
 #define	MAX_PORTALS_ON_CLUSTER	128
diff --git a/tools/qfvis/source/qfvis.c b/tools/qfvis/source/qfvis.c
index c88bc3b2b..12f7069e0 100644
--- a/tools/qfvis/source/qfvis.c
+++ b/tools/qfvis/source/qfvis.c
@@ -744,6 +744,18 @@ LoadPortals (char *name)
 		if (!line || sscanf (line, "%i\n", &numrealleafs) != 1)
 			Sys_Error ("LoadPortals: failed to read header");
 		read_leafs = 1;
+	} else if (line && (!strcmp (line, PORTALFILE2 "\n")
+						|| !strcmp (line, PORTALFILE2 "\r\n"))) {
+		line = Qgetline (f);
+		if (!line || sscanf (line, "%i\n", &numrealleafs) != 1)
+			Sys_Error ("LoadPortals: failed to read header");
+		line = Qgetline (f);
+		if (!line || sscanf (line, "%i\n", &portalclusters) != 1)
+			Sys_Error ("LoadPortals: failed to read header");
+		line = Qgetline (f);
+		if (!line || sscanf (line, "%i\n", &numportals) != 1)
+			Sys_Error ("LoadPortals: failed to read header");
+		read_leafs = 1;
 	} else {
 		Sys_Error ("LoadPortals: not a portal file");
 	}