From dda6a008ceb707d38f24ac0f987a1328f48f244b Mon Sep 17 00:00:00 2001
From: Alexander <DrA1ex@users.noreply.github.com>
Date: Fri, 29 Sep 2023 13:21:01 +0500
Subject: [PATCH] Gravity example: Pause when browser is not active

---
 examples/gravity/index.js | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/examples/gravity/index.js b/examples/gravity/index.js
index 9f4481f..9c0283f 100644
--- a/examples/gravity/index.js
+++ b/examples/gravity/index.js
@@ -207,6 +207,16 @@ function calculateForce(p1, p2, g, out) {
     }
 }
 
+document.addEventListener("visibilitychange", function () {
+    if (document.hidden) {
+        BootstrapInstance.pause();
+    } else {
+        BootstrapInstance.play();
+    }
+
+    console.log(performance.now(), BootstrapInstance.state);
+});
+
 // noinspection InfiniteLoopJS
 while (true) {
     await BootstrapInstance.requestPhysicsFrame(gravityStep);