Add BeatTime properties.

Assets/Cryville/Crtr/PropSrc.cs

@@ -1,5 +1,6 @@
 using Cryville.Common.Pdt;
 using System;
+using RBeatTime = Cryville.Crtr.BeatTime;
 
 namespace Cryville.Crtr {
 	public abstract class PropSrc {
@@ -55,5 +56,21 @@ namespace Cryville.Crtr {
 				}
 			}
 		}
+		public class BeatTime : PropSrc {
+			readonly Func<RBeatTime> _cb;
+			public BeatTime(Func<RBeatTime> cb) { _cb = cb; }
+			protected override unsafe void InternalGet(out int type, out byte[] value) {
+				var bt = _cb();
+				type = PdtInternalType.Vector;
+				value = new byte[4 * sizeof(int)];
+				fixed (byte* _ptr = value) {
+					int* ptr = (int*)_ptr;
+					*ptr++ = bt.b;
+					*ptr++ = bt.n;
+					*ptr++ = bt.d;
+					*ptr++ = PdtInternalType.Number;
+				}
+			}
+		}
 	}
 }