From 577005a595a1be030dfbdfc2e3d49a7765c2ab41 Mon Sep 17 00:00:00 2001
From: Glenn Maynard <gmaynard@users.sourceforge.net>
Date: Thu, 29 Oct 2009 20:21:54 +0000
Subject: [PATCH] helper for cycling through an enum

---
 stepmania/src/RageUtil.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/stepmania/src/RageUtil.h b/stepmania/src/RageUtil.h
index a5e115c4a9..79f977482b 100644
--- a/stepmania/src/RageUtil.h
+++ b/stepmania/src/RageUtil.h
@@ -183,6 +183,14 @@ static inline T enum_add2( T val, int iAmt )
 	return static_cast<T>( val + iAmt );
 }
 
+template<typename T>
+static inline T enum_cycle( T val, int iMax, int iAmt = 1 )
+{
+	int iVal = val + iAmt;
+	iVal %= iMax;
+	return static_cast<T>( iVal );
+}
+
 
 /*
  * We only have unsigned swaps; byte swapping a signed value doesn't make sense.