feat(MorphMesh): add morph animation flags

ZenKit.Test/TestMorphMesh.cs

@@ -42,7 +42,7 @@ public void TestLoad()
 		Assert.That(ani.BlendOut, Is.EqualTo(-0.0100000007f));
 		Assert.That(ani.Duration.TotalSeconds, Is.EqualTo(0.4));
 		Assert.That(ani.Speed, Is.EqualTo(0.0250000004f));
-		Assert.That(ani.Flags, Is.EqualTo(0));
+		Assert.That(ani.Flags, Is.EqualTo(MorphAnimationFlags.None));
 		Assert.That(ani.FrameCount, Is.EqualTo(10));
 
 		var vertices = ani.Vertices;

ZenKit/MorphMesh.cs

@@ -5,6 +5,16 @@
 
 namespace ZenKit
 {
+	[Flags]
+	public enum MorphAnimationFlags
+	{
+		None = 0,
+		Random = 1 << 0,
+		Loop = 1 << 1,
+		Shape = 1 << 2,
+		ShapeReference = 1 << 3,
+	}
+
 	public interface IMorphAnimation : ICacheable<IMorphAnimation>
 	{
 		string Name { get; }
@@ -13,7 +23,7 @@ public interface IMorphAnimation : ICacheable<IMorphAnimation>
 		float BlendOut { get; }
 		TimeSpan Duration { get; }
 		float Speed { get; }
-		byte Flags { get; }
+		MorphAnimationFlags Flags { get; }
 		int FrameCount { get; }
 		List<int> Vertices { get; }
 		public int SampleCount { get; }
@@ -31,7 +41,7 @@ public class CachedMorphAnimation : IMorphAnimation
 		public float BlendOut { get; set; }
 		public TimeSpan Duration { get; set; }
 		public float Speed { get; set; }
-		public byte Flags { get; set; }
+		public MorphAnimationFlags Flags { get; set; }
 		public int FrameCount { get; set; }
 		public List<int> Vertices { get; set; }
 
@@ -72,7 +82,7 @@ internal MorphAnimation(UIntPtr handle)
 		public float BlendOut => Native.ZkMorphAnimation_getBlendOut(_handle);
 		public TimeSpan Duration => TimeSpan.FromMilliseconds(Native.ZkMorphAnimation_getDuration(_handle));
 		public float Speed => Native.ZkMorphAnimation_getSpeed(_handle);
-		public byte Flags => Native.ZkMorphAnimation_getFlags(_handle);
+		public MorphAnimationFlags Flags => (MorphAnimationFlags) Native.ZkMorphAnimation_getFlags(_handle);
 		public int FrameCount => (int)Native.ZkMorphAnimation_getFrameCount(_handle);
 
 		public List<int> Vertices =>