[Stepmania-cvs] r28202 - trunk/stepmania/src: RageUtil.h

[Glenn M. <de...@st...>]

Modified:
   trunk/stepmania/src/RageUtil.h
Log:
helper for cycling through an enum

Modified: trunk/stepmania/src/RageUtil.h
==============================================================================
--- trunk/stepmania/src/RageUtil.h	(original)
+++ trunk/stepmania/src/RageUtil.h	Thu Oct 29 13:21:54 2009
@@ -183,6 +183,14 @@ static inline T enum_add2( T val, int iA
 	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.