added RcCylicBuffer<long> extensions

src/DotRecast.Core/Buffers/RcCyclicBuffers.cs

@@ -0,0 +1,54 @@
+namespace DotRecast.Core.Buffers
+{
+    public static class RcCyclicBuffers
+    {
+        public static long Sum(this RcCyclicBuffer<long> source)
+        {
+            long sum = 0;
+            checked
+            {
+                source.ForEach(x => sum += x);
+            }
+
+            return sum;
+        }
+
+        public static double Average(this RcCyclicBuffer<long> source)
+        {
+            if (0 >= source.Size)
+                return 0;
+
+            return source.Sum() / (double)source.Size;
+        }
+        
+        public static long Min(this RcCyclicBuffer<long> source)
+        {
+            if (0 >= source.Size)
+                return 0;
+            
+            long minValue = long.MaxValue;
+            source.ForEach(x =>
+            {
+                if (x < minValue)
+                    minValue = x;
+            });
+
+            return minValue;
+        }
+        
+        public static long Max(this RcCyclicBuffer<long> source)
+        {
+            if (0 >= source.Size)
+                return 0;
+            
+            long maxValue = long.MinValue;
+            source.ForEach(x =>
+            {
+                if (x > maxValue)
+                    maxValue = x;
+            });
+
+            return maxValue;
+        }
+    }
+}

src/DotRecast.Detour.Crowd/DtCrowdTelemetry.cs

@@ -90,18 +90,9 @@ namespace DotRecast.Detour.Crowd
             }
 
             cb.PushBack(duration);
-            _executionTimings[name] = CalculateAverage(cb);
+            _executionTimings[name] = (long)cb.Average();
         }
 
-        private static long CalculateAverage(RcCyclicBuffer<long> buffer)
-        {
-            long sum = 0L;
-            buffer.ForEach(item =>
-            {
-                sum += item;
-            });
 
-            return sum / buffer.Size;
-        }
     }
 }

src/DotRecast.Recast.Toolset/Tools/RcCrowdAgentProfilingTool.cs

@@ -1,7 +1,9 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using DotRecast.Core;
+using DotRecast.Core.Buffers;
 using DotRecast.Core.Collections;
 using DotRecast.Core.Numerics;
 using DotRecast.Detour;
@@ -25,7 +27,7 @@ namespace DotRecast.Recast.Toolset.Tools
 
         private const int SamplingCount = 500;
         private long _samplingUpdateTime;
-        private readonly List<long> _updateTimes;
+        private readonly RcCyclicBuffer<long> _updateTimes;
         private long _curUpdateTime;
         private long _avgUpdateTime;
         private long _minUpdateTime;
@@ -36,7 +38,7 @@ namespace DotRecast.Recast.Toolset.Tools
             _cfg = new RcCrowdAgentProfilingToolConfig();
             _agCfg = new DtCrowdAgentConfig();
             _polyPoints = new List<DtPolyPoint>();
-            _updateTimes = new List<long>();
+            _updateTimes = new RcCyclicBuffer<long>(SamplingCount);
         }
 
         public string GetName()
@@ -264,12 +266,7 @@ namespace DotRecast.Recast.Toolset.Tools
             }
 
             var currentTime = endTime - startTime;
-            _updateTimes.Add(currentTime);
-
-            if ((int)(SamplingCount * 1.25f) < _updateTimes.Count)
-            {
-                _updateTimes.RemoveRange(0, _updateTimes.Count - SamplingCount);
-            }
+            _updateTimes.PushBack(currentTime);
 
             // for benchmark
             _samplingUpdateTime = _updateTimes.Sum() / TimeSpan.TicksPerMillisecond;
@@ -277,7 +274,6 @@ namespace DotRecast.Recast.Toolset.Tools
             _avgUpdateTime = (long)(_updateTimes.Average() / TimeSpan.TicksPerMillisecond);
             _minUpdateTime = _updateTimes.Min() / TimeSpan.TicksPerMillisecond;
             _maxUpdateTime = _updateTimes.Max() / TimeSpan.TicksPerMillisecond;
-
         }
 
         private void MoveMob(DtNavMeshQuery navquery, IDtQueryFilter filter, DtCrowdAgent ag, RcCrowdAgentData crowAgentData)
@@ -402,6 +398,5 @@ namespace DotRecast.Recast.Toolset.Tools
         {
             return _maxUpdateTime;
         }
-
     }
 }