# HG changeset patch
# User Alys Brooks <alysbrooks@fastmail.com>
# Date 2022-11-14 05:15:33
# Node ID a5e03a25946d8613c772c6dd978e885f5fd2468b
# Parent  6a1d64c93e495bf00b8545d6b500d7be1ba433f8

Streamline performance of debug code.

Use raw floats for draw times and avoid resorting so many times.

Seems to reduce time by about a third. Still ends up slow after leaving the game running for a few minutes.

diff --git a/isometric-park-fna/FNAGame.cs b/isometric-park-fna/FNAGame.cs
--- a/isometric-park-fna/FNAGame.cs
+++ b/isometric-park-fna/FNAGame.cs
@@ -11,6 +11,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using SpriteFontPlus;
+using JM.LinqFaster;
 
 using isometricparkfna;
 using static isometricparkfna.CellMap;
@@ -70,6 +71,7 @@
 
     Queue<float> past_fps = new Queue<float>(100);
     Queue<TimeSpan> past_draw = new Queue<TimeSpan>(100);
+    Queue<float> past_draw_millis = new Queue<float>(100);
     int tilesDrawn = 0;
 
     private static int width = 1280;
@@ -995,6 +997,7 @@
         stopWatch2.Start();
         //Calcs for debug window:
         past_draw.Enqueue(this.drawTime);
+        past_draw_millis.Enqueue((float)this.drawTime.TotalMilliseconds);
         if ((this.frameCounter % 15) == 0)
         {
             past_fps.Enqueue(this.frameRate);
@@ -1072,15 +1075,18 @@
         additionalInfo.Add("Dialog entries", entries);
         additionalInfo.Add("Metadata entries", descriptions);
 
-        if (past_fps.Count() > 5) {
-            additionalInfo.Add(".01%% fps", MathUtils.Percentile(past_fps.Skip(5).ToArray(), 0.0001f).ToString());
-            additionalInfo.Add(".1%% fps", MathUtils.Percentile(past_fps.Skip(5).ToArray(), 0.001f).ToString());
-            additionalInfo.Add("1%% fps", MathUtils.Percentile(past_fps.Skip(5).ToArray(), 0.01f).ToString());
-            additionalInfo.Add("50%% fps", MathUtils.Percentile(past_fps.Skip(5).ToArray(), 0.50f).ToString());
+        if ((past_fps.Count() > 5) && show_another_window) {
+            var past_fps_floats = past_fps.Skip(5).ToArray();
+            Array.Sort(past_fps_floats);
+            additionalInfo.Add(".01%% fps", MathUtils.Percentile(past_fps_floats, 0.0001f).ToString());
+            additionalInfo.Add(".1%% fps", MathUtils.Percentile(past_fps_floats, 0.001f).ToString());
+            additionalInfo.Add("1%% fps", MathUtils.Percentile(past_fps_floats, 0.01f).ToString());
+            additionalInfo.Add("50%% fps", MathUtils.Percentile(past_fps_floats, 0.50f).ToString());
         }
 
-        if (past_draw.Count() > 5) {
-            var past_draw_floats = past_draw.Skip(5).Select(ts => ts.TotalMilliseconds).ToArray();
+        if ((past_draw.Count() > 5) && show_another_window) {
+            var past_draw_floats = past_draw_millis.Skip(5).ToArray();
+            Array.Sort(past_draw_floats);
             additionalInfo.Add(".01%% draw", MathUtils.Percentile(past_draw_floats, 0.0001f).ToString());
             additionalInfo.Add(".1%% draw", MathUtils.Percentile(past_draw_floats, 0.001f).ToString());
             additionalInfo.Add("1%% draw", MathUtils.Percentile(past_draw_floats, 0.01f).ToString());
diff --git a/isometric-park-fna/Utils/MathUtils.cs b/isometric-park-fna/Utils/MathUtils.cs
--- a/isometric-park-fna/Utils/MathUtils.cs
+++ b/isometric-park-fna/Utils/MathUtils.cs
@@ -154,7 +154,7 @@
 
         public static float Percentile(float[] floats, float percentile) {
             if (floats.Length > 0) {
-                Array.Sort(floats);
+                // Array.Sort(floats);
                 var raw_position = (floats.Length-1) * percentile;
 
                 var lower_position = (int)raw_position;