From 971fcd352a872109a72c545cc9517c8980918b17 Mon Sep 17 00:00:00 2001
From: aura <nw@moneybot.cc>
Date: Mon, 13 Jul 2026 19:57:37 +0200
Subject: add scaling rpm down when redline is hit below set point

---
 src/hooks.cpp   |  2 +-
 src/overlay.cpp | 59 +++++++++++++++++++++++++++++++++++++++++++++++++--------
 src/overlay.h   | 12 +++++++++---
 3 files changed, 61 insertions(+), 12 deletions(-)

(limited to 'src')

diff --git a/src/hooks.cpp b/src/hooks.cpp
index 25883b3..1b1c3cf 100644
--- a/src/hooks.cpp
+++ b/src/hooks.cpp
@@ -198,7 +198,7 @@ VKAPI_ATTR VkResult VKAPI_CALL hook_queue_present(
   udp_parse( &d->udp, &od->telem );
   if( ++od->frame % 60 == 0 ) {
     if( config_poll( &od->cfg ) )
-      od->valid_redline = 0.86;
+      od->valid_redline = od->target_redline = 0.86;
   }
 
   F64 now = t_nows();
diff --git a/src/overlay.cpp b/src/overlay.cpp
index d1469b2..07691b1 100644
--- a/src/overlay.cpp
+++ b/src/overlay.cpp
@@ -51,34 +51,75 @@ void overlay_handle_teleport( OVERLAY_DATA* d ) {
   }
 }
 
-void overlay_handle_redline( OVERLAY_DATA* d ) {
+void overlay_handle_redline( OVERLAY_DATA* d, F64 dt, F64 now ) {
   TELEMETRY* t = &d->telem;
+  if( !t->car_ordinal || !t->race_on )
+    return;
 
-  if( !d->cfg.autoscale_rpm || d->valid_redline < 0.86f ) {
+  if( !d->cfg.autoscale_rpm ) {
     d->valid_redline = 0.86f;
     return;
   }
 
+  if( d->candidate_redline > 0.1f && now - d->redlinebang_time > .175f ) {
+    d->redlinechange_time = now;
+    d->target_redline = d->candidate_redline;
+    d->candidate_redline = 0.f;
+  }
+
+  if( d->valid_redline != d->target_redline ) {
+    F64 diff = d->target_redline - d->valid_redline;
+    if( fabs( diff ) > 0.001f ) {
+      F64 max = diff > 0 ? 0.1 : 0.0015 * dt;
+      if( diff > 0 && diff > max ) diff = max;
+      if( diff < 0 && diff < -max ) diff = -max;
+      d->valid_redline += diff;
+    }
+  }
+
   if( t->gear != d->last_gear ) {
+    d->candidate_redline = 0.f;
+    d->last_shifttime = now;
+
     if( t->gear != 0 && t->gear != 11 && t->gear > d->last_valid_gear )
       d->valid_shift = 1;
     else
       d->valid_shift = 0;
   }
 
+  F64 rpmr = (F64)(t->rpm) / t->rpm_max;
+  F64 rpmo = (F64)(t->rpm - d->cfg.rpm_off) / t->rpm_max;
   if( d->valid_shift ) {
-    F64 rpmr = (F64)(t->rpm) / t->rpm_max;
-    if( rpmr >= 0.99f )
+    if( rpmr >= 0.98f ) {
       d->valid_redline = 0.86f;
-    rpmr = (F64)(t->rpm - (I32)d->cfg.rpm_off) / t->rpm_max;
-    if( rpmr > d->valid_redline ) {
-      d->valid_redline = rpmr;
+      d->target_redline = 0.86f;
+    }
+    if( rpmo > d->target_redline ) {
+      d->target_redline = rpmo;
+    }
+  }
+
+  if( d->candidate_redline > 0.f && rpmo >= d->candidate_redline )
+    d->candidate_redline = rpmo;
+  else if( !d->candidate_redline ) {
+    F32 geartime = now - d->last_shifttime;
+    if( geartime > 0.9f && rpmo < d->valid_redline && t->power * 0.001341022 <= 1.f && t->accel >= 230 && t->gear != 11 ) {
+      d->candidate_redline = (F32)rpmo;
+      if( d->candidate_redline < d->valid_redline - 0.01f )
+        d->candidate_redline = d->valid_redline - 0.01f;
+
+      d->redlinebang_time = now;
     }
   }
 
   d->last_gear = t->gear;
   if( t->gear != 11 )
     d->last_valid_gear = t->gear;
+
+  if( d->valid_redline < 0.65f )
+    d->valid_redline = 0.65f;
+  if( d->target_redline < 0.65f )
+    d->target_redline = 0.65f;
 }
 
 void overlay_handle_car_changed( OVERLAY_DATA* d ) {
@@ -96,6 +137,8 @@ void overlay_handle_car_changed( OVERLAY_DATA* d ) {
     d->peak_boost_bar = 0.0;
     d->boost_since    = 0.0;
     d->valid_redline  = 0.86;
+    d->target_redline = 0.86;
+    d->candidate_redline = 0.f;
   }
 }
 
@@ -175,7 +218,7 @@ void overlay_update( OVERLAY_DATA* d, F64 now, F64 dt ) {
   d->was_live = live;
 
   overlay_handle_car_changed( d );
-  overlay_handle_redline( d );
+  overlay_handle_redline( d, dt, now );
   overlay_update_rpm_boost( d, live, dt, now );
 
   if( !t->extended )
diff --git a/src/overlay.h b/src/overlay.h
index c690c64..231d1a9 100644
--- a/src/overlay.h
+++ b/src/overlay.h
@@ -21,18 +21,24 @@ struct OVERLAY_DATA {
   I32            frame;
 
   F32            valid_redline;
-  I32            valid_shift;
+  U8             valid_shift;
   I32            shift_rpm;
   I32            last_gear;
   I32            last_valid_gear;
+  F64            last_shifttime;
+  F64            candidate_redline;
+  F64            redlinebang_time;
+  F64            redlinechange_time;
+  F64            target_redline;
+  U8             redline_downscaled;
 
-  U8           was_live;
+  U8             was_live;
   F64            live_since;
   F64            boost_since;
   I32            car_ordinal;
   F32            car_rpm_max;
   I32            prev_race_on;
-  U8           lc_armed;
+  U8             lc_armed;
 
   F64            prev_disp_rpm, rpm_vel;
   F64            prev_disp_bar, bar_vel;
-- 
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