From 038a287e965e068305d398e05849602b9d5b483b Mon Sep 17 00:00:00 2001
From: Evert <imsonotsleepy@gmail.com>
Date: Mon, 21 Aug 2017 17:21:09 +0300
Subject: [PATCH] \(hopefully\) improved fps counter

---
 index.js | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/index.js b/index.js
index 3e35618..e3b580e 100644
--- a/index.js
+++ b/index.js
@@ -690,17 +690,20 @@ window.onload = function () {
   }
 
   let lastTime = Date.now()
+  let now
+  let fpsRes = 50
+
   function gameLoop () {
-    requestAnimationFrame(gameLoop)
-
-    let delta = (Date.now() - lastTime) / 1000
-
-    fps = 1 / (delta === 0 ? 1 : delta)
-
-    update(delta)
+    update()
     render()
 
-    lastTime = Date.now()
+    let cfps = 1000 / ((now = new Date) - lastTime)
+    if (now != lastTime) {
+      fps += (cfps - fps) / fpsRes
+      lastTime = now
+    }
+
+    requestAnimationFrame(gameLoop)
   }
 
   function initialize () {