From a840990bdcabf45fb0d377478ba0ab27222434ae Mon Sep 17 00:00:00 2001
From: niliara-edu <nil.jimeno@estudiant.fjaverianas.com>
Date: Mon, 23 Dec 2024 18:32:29 +0100
Subject: initial commit

---
 src/engine/clock.js | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 src/engine/clock.js

(limited to 'src/engine/clock.js')

diff --git a/src/engine/clock.js b/src/engine/clock.js
new file mode 100644
index 0000000..e817863
--- /dev/null
+++ b/src/engine/clock.js
@@ -0,0 +1,26 @@
+import { Engine } from "../engine.js"
+
+export { Engine } from "../engine.js"
+const fps = 60
+
+/* cap the game's fps */
+let msPrev = window.performance.now()
+const msPerFrame = 1000 / fps
+function tick() {
+    window.requestAnimationFrame(tick)
+    
+    const msNow = window.performance.now()
+    const msPassed = msNow - msPrev
+    
+    if (msPassed < msPerFrame) return
+    
+    const excessTime = msPassed % msPerFrame
+    msPrev = msNow - excessTime
+    
+    Engine.frame++
+    Engine.updateEngine()
+}
+
+export function startClock() {
+    tick()
+}
-- 
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