From 0f85a38e7506c15eb5255f664b0c7d1703bc419d Mon Sep 17 00:00:00 2001
From: Zack Middleton <zturtleman@gmail.com>
Date: Fri, 1 Feb 2013 22:07:52 -0600
Subject: Fix MSG_ReadDeltaKey setting bit 1<<bits often

MSG_ReadDeltaKey would often set 1<<bits, it should never be set. It exceeds the size of what was being read.
Worked okay for weapons/forward/right/up as they stored as chars (value would wrap around to correct value, lucky).
Angles had the wrong value, not sure if it was causing issues.
---
 src/qcommon/msg.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/qcommon')

diff --git a/src/qcommon/msg.c b/src/qcommon/msg.c
index b2377f1d..9499864f 100644
--- a/src/qcommon/msg.c
+++ b/src/qcommon/msg.c
@@ -620,7 +620,7 @@ void MSG_WriteDeltaKey( msg_t *msg, int key, int oldV, int newV, int bits ) {
 
 int	MSG_ReadDeltaKey( msg_t *msg, int key, int oldV, int bits ) {
 	if ( MSG_ReadBits( msg, 1 ) ) {
-		return MSG_ReadBits( msg, bits ) ^ (key & kbitmask[bits]);
+		return MSG_ReadBits( msg, bits ) ^ (key & kbitmask[ bits - 1 ]);
 	}
 	return oldV;
 }
-- 
cgit