add bit manipulation extension methods

Blarg.GameFramework/Blarg.GameFramework.csproj

@@ -136,6 +136,7 @@
     <Compile Include="Support\FreeMovementCamera.cs" />
     <Compile Include="Support\StringBuilderExtensions.cs" />
     <Compile Include="Graphics\Helpers\GraphicsHelpers.cs" />
+    <Compile Include="Support\BitExtensions.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath32)\Microsoft\Portable\$(TargetFrameworkVersion)\Microsoft.Portable.CSharp.targets" />
   <ItemGroup>

Blarg.GameFramework/Support/BitExtensions.cs

@@ -0,0 +1,190 @@
+using System;
+
+namespace Blarg.GameFramework.Support
+{
+	// this class exists because i am stupid and can never remember the
+	// operators used for setting/clearing/toggling bits
+	//
+	// ... and of course, you can't use generics with bitwise operations :(
+
+	public static class BitExtensions
+	{
+		#region Is Set
+
+		public static bool IsBitSet(this long bitfield, long bit)
+		{
+			return (bitfield & bit) != 0;
+		}
+
+		public static bool IsBitSet(this ulong bitfield, ulong bit)
+		{
+			return (bitfield & bit) != 0;
+		}
+
+		public static bool IsBitSet(this int bitfield, int bit)
+		{
+			return (bitfield & bit) != 0;
+		}
+
+		public static bool IsBitSet(this uint bitfield, uint bit)
+		{
+			return (bitfield & bit) != 0;
+		}
+
+		public static bool IsBitSet(this short bitfield, short bit)
+		{
+			return (bitfield & bit) != 0;
+		}
+
+		public static bool IsBitSet(this ushort bitfield, ushort bit)
+		{
+			return (bitfield & bit) != 0;
+		}
+
+		public static bool IsBitSet(this byte bitfield, byte bit)
+		{
+			return (bitfield & bit) != 0;
+		}
+
+		#endregion
+
+		#region Set
+
+		public static long SetBit(this long bitfield, long bit)
+		{
+			bitfield |= bit;
+			return bitfield;
+		}
+
+		public static ulong SetBit(this ulong bitfield, ulong bit)
+		{
+			bitfield |= bit;
+			return bitfield;
+		}
+
+		public static int SetBit(this int bitfield, int bit)
+		{
+			bitfield |= bit;
+			return bitfield;
+		}
+
+		public static uint SetBit(this uint bitfield, uint bit)
+		{
+			bitfield |= bit;
+			return bitfield;
+		}
+
+		public static short SetBit(this short bitfield, short bit)
+		{
+			bitfield |= bit;
+			return bitfield;
+		}
+
+		public static ushort SetBit(this ushort bitfield, ushort bit)
+		{
+			bitfield |= bit;
+			return bitfield;
+		}
+
+		public static byte SetBit(this byte bitfield, byte bit)
+		{
+			bitfield |= bit;
+			return bitfield;
+		}
+
+		#endregion
+
+		#region Toggle
+
+		public static long ToggleBit(this long bitfield, long bit)
+		{
+			bitfield ^= bit;
+			return bitfield;
+		}
+
+		public static ulong ToggleBit(this ulong bitfield, ulong bit)
+		{
+			bitfield ^= bit;
+			return bitfield;
+		}
+
+		public static int ToggleBit(this int bitfield, int bit)
+		{
+			bitfield ^= bit;
+			return bitfield;
+		}
+
+		public static uint ToggleBit(this uint bitfield, uint bit)
+		{
+			bitfield ^= bit;
+			return bitfield;
+		}
+
+		public static short ToggleBit(this short bitfield, short bit)
+		{
+			bitfield ^= bit;
+			return bitfield;
+		}
+
+		public static ushort ToggleBit(this ushort bitfield, ushort bit)
+		{
+			bitfield ^= bit;
+			return bitfield;
+		}
+
+		public static byte ToggleBit(this byte bitfield, byte bit)
+		{
+			bitfield ^= bit;
+			return bitfield;
+		}
+
+		#endregion
+
+		#region Clear
+
+		public static long ClearBit(this long bitfield, long bit)
+		{
+			bitfield &= ~bit;
+			return bitfield;
+		}
+
+		public static ulong ClearBit(this ulong bitfield, ulong bit)
+		{
+			bitfield &= ~bit;
+			return bitfield;
+		}
+
+		public static int ClearBit(this int bitfield, int bit)
+		{
+			bitfield &= ~bit;
+			return bitfield;
+		}
+
+		public static uint ClearBit(this uint bitfield, uint bit)
+		{
+			bitfield &= ~bit;
+			return bitfield;
+		}
+
+		public static short ClearBit(this short bitfield, short bit)
+		{
+			bitfield &= (short)~bit;
+			return bitfield;
+		}
+
+		public static ushort ClearBit(this ushort bitfield, ushort bit)
+		{
+			bitfield &= (ushort)~bit;
+			return bitfield;
+		}
+
+		public static byte ClearBit(this byte bitfield, byte bit)
+		{
+			bitfield &= (byte)~bit;
+			return bitfield;
+		}
+
+		#endregion
+	}
+}
+