Add project files.

Assets/Cryville/Crtr/Event/RMVPool.cs

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+using Cryville.Common.Buffers;
+using System.Collections.Generic;
+
+namespace Cryville.Crtr.Event {
+	internal class RMVPool {
+		private class Bucket : ObjectPool<RealtimeMotionValue> {
+			MotionRegistry _reg;
+			public Bucket(string name, int capacity) : base(capacity) {
+				_reg = ChartPlayer.motionRegistry[name];
+			}
+			protected override RealtimeMotionValue Construct() {
+				return new RealtimeMotionValue().Init(_reg.InitValue);
+			}
+		}
+		static Dictionary<string, Bucket> _buckets;
+		public static void Prepare() {
+			_buckets = new Dictionary<string, Bucket>(ChartPlayer.motionRegistry.Count);
+			foreach (var reg in ChartPlayer.motionRegistry)
+				_buckets.Add(reg.Key, new Bucket(reg.Key, 4096));
+		}
+
+		Dictionary<RealtimeMotionValue, string> _rented = new Dictionary<RealtimeMotionValue, string>();
+		public RealtimeMotionValue Rent(MotionName name) {
+			var n = name.MainName;
+			var obj = _buckets[n].Rent();
+			_rented.Add(obj, n);
+			return obj;
+		}
+		public void Return(RealtimeMotionValue obj) {
+			_buckets[_rented[obj]].Return(obj);
+			_rented.Remove(obj);
+		}
+		public void ReturnAll() {
+			foreach (var obj in _rented)
+				_buckets[obj.Value].Return(obj.Key);
+			_rented.Clear();
+		}
+	}
+}