diff --git a/Assets/Cryville/Crtr/PdtEvaluator.cs b/Assets/Cryville/Crtr/PdtEvaluator.cs
index 588409a..026f813 100644
--- a/Assets/Cryville/Crtr/PdtEvaluator.cs
+++ b/Assets/Cryville/Crtr/PdtEvaluator.cs
@@ -146,6 +146,8 @@ namespace Cryville.Crtr {
 			_ctxops.Add(IdentifierManager.SharedInstance.Request("attack_timing"), new func_attack_timing(cccb));
 			_ctxops.Add(IdentifierManager.SharedInstance.Request("enter_timing"), new func_enter_timing(cccb));
 			_ctxops.Add(IdentifierManager.SharedInstance.Request("release_timing"), new func_release_timing(cccb));
+			_ctxops.Add(IdentifierManager.SharedInstance.Request("leave_timing"), new func_leave_timing(cccb));
+			_ctxops.Add(IdentifierManager.SharedInstance.Request("contact_timing"), new func_contact_timing(cccb));
 		}
 		static PdtEvaluator() {
 			_shortops.Add(new PdtOperatorSignature("@", 2), new op_at_2());
@@ -507,6 +509,22 @@ namespace Cryville.Crtr {
 				return ft > t0 && ft <= t1;
 			}
 		}
+		class func_leave_timing : JudgeFunction {
+			public func_leave_timing(Func<int, PropSrc> ctxcb) : base(1, ctxcb) { }
+			protected override bool ExecuteImpl(float fn, float tn, float ft, float tt, Vector3? fv, Vector3? tv) {
+				if (fv == null || tv == null) return false;
+				var t1 = GetOperand(0).AsNumber() + tn;
+				return ft < t1 && tt >= t1;
+			}
+		}
+		class func_contact_timing : JudgeFunction {
+			public func_contact_timing(Func<int, PropSrc> ctxcb) : base(2, ctxcb) { }
+			protected override bool ExecuteImpl(float fn, float tn, float ft, float tt, Vector3? fv, Vector3? tv) {
+				var t0 = GetOperand(0).AsNumber() + fn;
+				var t1 = GetOperand(1).AsNumber() + tn;
+				return (fv == null || ft < t1) && (tv == null || tt >= t0);
+			}
+		}
 		#endregion
 		unsafe static class oputil {
 			public static float AsNumber(PropSrc src) {