diff --git a/Assets/Cryville/Crtr/InputProxy.cs b/Assets/Cryville/Crtr/InputProxy.cs
index e07d7c5..5297f34 100644
--- a/Assets/Cryville/Crtr/InputProxy.cs
+++ b/Assets/Cryville/Crtr/InputProxy.cs
@@ -4,6 +4,7 @@ using Cryville.Common.Unity.Input;
 using System;
 using System.Collections.Generic;
 using UnityEngine;
+using Logger = Cryville.Common.Logger;
 
 namespace Cryville.Crtr {
 	public class InputProxy {
@@ -102,13 +103,19 @@ namespace Cryville.Crtr {
 		#endregion
 
 		#region Handling
-		public void Activate() { foreach (var src in _sproxies.Keys) src.Handler.Activate(); }
+		public void Activate() {
+			_activeCounts.Clear();
+			foreach (var p in _tproxies.Values) _activeCounts.Add(p.Source.Value, 0);
+			_vect.Clear(); _vecs.Clear();
+			foreach (var src in _sproxies.Keys) src.Handler.Activate();
+		}
 		public void Deactivate() { foreach (var src in _sproxies.Keys) src.Handler.Deactivate(); }
 
 		readonly object _lock = new object();
 		static readonly int _var_value = IdentifierManager.SharedInstance.Request("value");
 		static readonly PropOp.Arbitrary _arbop = new PropOp.Arbitrary();
 		readonly byte[] _vecbuf = new byte[3 * sizeof(float) + sizeof(int)];
+		readonly Dictionary<InputSource, int> _activeCounts = new Dictionary<InputSource, int>(); // TODO used for force tick
 		readonly Dictionary<InputIdentifier, float> _vect = new Dictionary<InputIdentifier, float>();
 		readonly Dictionary<ProxiedInputIdentifier, PropSrc.Arbitrary> _vecs = new Dictionary<ProxiedInputIdentifier, PropSrc.Arbitrary>();
 		static readonly byte[] _nullvalue = new byte[0];
@@ -152,11 +159,19 @@ namespace Cryville.Crtr {
 				PropSrc.Arbitrary fv, tv = _etor.ContextCascadeLookup(_var_value);
 				if (!_vecs.TryGetValue(pid, out fv)) fv = new PropSrc.Arbitrary(PdtInternalType.Null, new byte[0]);
 				if (fv.Type != PdtInternalType.Null || tv.Type != PdtInternalType.Null) {
+					if (fv.Type == PdtInternalType.Null) {
+						_activeCounts[id.Source]++;
+						Logger.Log("main", 0, "Input/Proxy", "active {0} # {1} (+)", id.Source, _activeCounts[id.Source]);
+					}
 					_etor.ContextCascadeInsert();
 					_etor.ContextCascadeUpdate(_var_fv, fv);
 					_etor.ContextCascadeUpdate(_var_tv, tv);
 					_judge.Feed(target, ft, tt);
 					_etor.ContextCascadeDiscard();
+					if (tv.Type == PdtInternalType.Null) {
+						_activeCounts[id.Source]--;
+						Logger.Log("main", 0, "Input/Proxy", "active {0} # {1} (-)", id.Source, _activeCounts[id.Source]);
+					}
 				}
 				_judge.Cleanup(target, ft, tt);
 				_vecs[pid] = tv;