sneak/Shared/Timer.cs

53 lines
1.5 KiB
C#

using System;
using System.Diagnostics;
namespace SemiColinGames {
public class Timer {
private readonly Stopwatch stopwatch = new Stopwatch();
private readonly double targetTime;
private readonly string name;
private readonly int[] histogram = new int[21];
private double startTime = 0.0;
private int totalFrames = 0;
public Timer(double targetTime, string name) {
this.targetTime = targetTime;
this.name = name;
}
public void Start() {
startTime = stopwatch.Elapsed.TotalSeconds;
stopwatch.Start();
}
public void Stop() {
stopwatch.Stop();
totalFrames++;
double frameTime = stopwatch.Elapsed.TotalSeconds - startTime;
int bucket = FMath.Clamp((int) (10.0f * frameTime / targetTime), 0, 20);
histogram[bucket]++;
}
public void DumpStats() {
Debug.WriteLine(name + ".DumpStats():");
for (int i = 0; i < histogram.Length; i++) {
int value = histogram[i];
if (value == 0) {
continue;
}
// Every star is one percent.
int numStars = FMath.Clamp(100 * value / totalFrames, 1, 100);
string prefix;
if (i == histogram.Length - 1) {
prefix = " 200+%: ";
} else {
prefix = String.Format("{0,3}-{1,3}%: ", i * 10, (i + 1) * 10);
}
string stars = new string('*', numStars);
Debug.WriteLine(String.Format("{0}{1,-100} {2}", prefix, stars, value));
}
}
}
}