Uxn5: fix uxn screen evaluating too fast on high refresh rate devices v1 PROPOSED

Nojus Raskevicius: 1
 Uxn5: fix uxn screen evaluating too fast on high refresh rate devices

 1 files changed, 12 insertions(+), 1 deletions(-)

[PATCH] Uxn5: fix uxn screen evaluating too fast on high refresh rate devices Export this patch

---
 src/app.js | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/app.js b/src/app.js
index 216bff7..d741749 100644
--- a/src/app.js
+++ b/src/app.js
@@ -15,6 +15,9 @@ const emulator = new Emu()
 
 const share = new ShareView(document.getElementById("share"));
 
+var frametime = 0;
+const TARGET_FPS = 60;
+
 emulator.init().then(() => {
   emulator.console.write_el = document.getElementById("console_std")
   emulator.console.error_el = document.getElementById("console_err")
@@ -42,7 +45,15 @@ emulator.init().then(() => {
 
   // Animation callback
   function step() {
-    emulator.screen_callback();
+
+    var current = performance.now();
+    var delta = current - frametime;
+
+    if (delta > 1000 / TARGET_FPS) {
+      emulator.screen_callback();
+      frametime = current;
+    }
+
     window.requestAnimationFrame(step)
   }
 
-- 
2.42.0