From 35f095d7c5a644bf82c827513d87c7fc4afc5308 Mon Sep 17 00:00:00 2001
From: Yuval Tassa <tassa@google.com>
Date: Tue, 12 Dec 2023 06:42:40 -0800
Subject: [PATCH] When paused in `simulate`, add index of history scrubber if
 not 0.

PiperOrigin-RevId: 590184966
Change-Id: Id0914c41a1339cf71ebdea02ec486c52c3d37179
---
 simulate/simulate.cc | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/simulate/simulate.cc b/simulate/simulate.cc
index 0b2a150a..db0821d2 100644
--- a/simulate/simulate.cc
+++ b/simulate/simulate.cc
@@ -2476,7 +2476,14 @@ void Simulate::Render() {
 
   // show pause/loading label
   if (!this->run || this->loadrequest) {
-    const char* label = this->loadrequest ? "LOADING..." : "PAUSE";
+    char label[30] = {'\0'};
+    if (this->loadrequest) {
+      std::snprintf(label, sizeof(label), "LOADING...");
+    } if (this->scrub_index == 0) {
+      std::snprintf(label, sizeof(label), "PAUSE");
+    } else {
+      std::snprintf(label, sizeof(label), "PAUSE (%d)", this->scrub_index);
+    }
     mjr_overlay(mjFONT_BIG, mjGRID_TOP, smallrect, label, nullptr,
                 &this->platform_ui->mjr_context());
   }