From 8159fd7110459246ff61a41800899f5d854eceee Mon Sep 17 00:00:00 2001
From: Justin Clark-Casey (justincc)
Date: Wed, 21 Sep 2011 19:28:41 +0100
Subject: When calling osNpcMoveTo(), rotate the avatar in the direction of
 travel.

This stops the npc walking backwards if the target is directly behind.
This means that the npc no longer returns to its original rotation once movement has finished.
If you want this behaviour, please store and reset the original rotation after movement.
This is somewhat to address http://opensimulator.org/mantis/view.php?id=5678
---
 .../Tests/Common/QuaternionToleranceConstraint.cs  | 82 ++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 OpenSim/Tests/Common/QuaternionToleranceConstraint.cs

(limited to 'OpenSim/Tests')

diff --git a/OpenSim/Tests/Common/QuaternionToleranceConstraint.cs b/OpenSim/Tests/Common/QuaternionToleranceConstraint.cs
new file mode 100644
index 0000000..b38c382
--- /dev/null
+++ b/OpenSim/Tests/Common/QuaternionToleranceConstraint.cs
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System;
+using OpenMetaverse;
+using NUnit.Framework;
+using NUnit.Framework.Constraints;
+
+namespace OpenSim.Tests.Common
+{
+    public class QuaternionToleranceConstraint : ANumericalToleranceConstraint
+    {
+        private Quaternion _baseValue;
+        private Quaternion _valueToBeTested;
+
+        public QuaternionToleranceConstraint(Quaternion baseValue, double tolerance) : base(tolerance)
+        {
+            _baseValue = baseValue;
+        }
+
+        /// <summary>
+        /// Test whether the constraint is satisfied by a given value
+        /// </summary>
+        /// <param name="valueToBeTested">The value to be tested</param>
+        /// <returns>
+        /// True for success, false for failure
+        /// </returns>
+        public override bool Matches(object valueToBeTested)
+        {
+            if (valueToBeTested == null)
+            {
+                throw new ArgumentException("Constraint cannot be used upon null values.");
+            }
+            if (valueToBeTested.GetType() != typeof (Quaternion))
+            {
+                throw new ArgumentException("Constraint cannot be used upon non quaternion values.");
+            }
+
+            _valueToBeTested = (Quaternion)valueToBeTested;
+
+            return (IsWithinDoubleConstraint(_valueToBeTested.X, _baseValue.X) &&
+                    IsWithinDoubleConstraint(_valueToBeTested.Y, _baseValue.Y) &&
+                    IsWithinDoubleConstraint(_valueToBeTested.Z, _baseValue.Z) &&
+                    IsWithinDoubleConstraint(_valueToBeTested.W, _baseValue.W));
+        }
+
+        public override void WriteDescriptionTo(MessageWriter writer)
+        {
+            writer.WriteExpectedValue(
+                string.Format("A value {0} within tolerance of plus or minus {1}", _baseValue, _tolerance));
+        }
+
+        public override void WriteActualValueTo(MessageWriter writer)
+        {
+            writer.WriteActualValue(_valueToBeTested);
+        }
+    }
+}
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