Manual Transmission 5.9

While developing my handling overhaul, the steering feel in Manual Transmission still did not feel entirely right. Specifically the initial force feedback build up as you start cranking the wheel, which still didn't feel communicative enough unless I cranked up the responsivity curve, but that muddied away finer details when the steering force was strong.

I dove back into finding a better way and I think this is the best I can extract from GTA V. This update introduces an improved force feedback model, and when paired with the handling overhaul, should push the game to feel pretty realistically. Of course the physics model isn't actual simulation-tier, but this is pretty convincing from my personal experience, when comparing it against titles like BeamNG or AC Evo, on a Fanatec CSL DD 8Nm wheel base.

Changelog

• Introduce new force feedback model

  • Main steering forces are based on per-wheel tyre forces.

  • Add tunable vertical load component to communicate surface shape and transiant weight transfer (effectively replaces suspension force feedback).

  • Replace old wheel friction effect with tyre scrub, steering rack resistance and viscous damping.

  • Feed force feedback with surface grip information to communicate decreased grip.

  • Improve surface material force feedback effect generation/calculation.

  • The previous force feedback model is still available and can be selected, if that's preferred.

  • Removed AntiDeadForce, use a force feedback LUT if your wheel has force feedback deadzone. Applies to both force feedback models.

  • Improve wheel (re)initialization and force feedback recovery stability.

• Manual Transmission now supports automatic gearbox hints from BaseAutomaticHints.json and vehicle configs.

• Automatic gearboxes now simulate sequential-style, double-clutch and torque converter-type modes, which changes how the clutch/throttle interact during shifting events.

• Automatic gearboxes now can slip the clutch when accelerating from a stop, as to not bog down the engine.

• Enhanced Steering mode now has an optional slip-angle aware steering angle limiter now.

• NPC gearboxes may now skip multiple gears on downshifts, for more competitive NPCs.

• Cruise control now supports throttle input to allow accelerator override.

• Cruise control now ignore clutch input, to allow manual shifting while cruise control is active.

• Cruise control commanded throttle/brake values are now displayed in the pedal info HUD element.

• Export wheel input state and processed horizontal/vertical camera input through the script API, for camera-script integration.

Fixes:

• Fix clutch bit point not used properly for engine lockup, engine braking, RPM behavior with clutch bite point and hill gravity.

• Fix swapped y/z axes in reported UDP telemetry position/velocity/direction vectors.

Minor changes:

• All decimal values in the menu now accept keyboard input for quicker editing.

Notes:

• The new and previous force feedback models have separate tuning settings.

• Remember to set the wheelbase maximum torque to your wheelbase's rated torque so force feedback scales properly.

5.9.1

The initial 5.9.0 release contained a few problems, this has been resolved. 5.9.1 is attached to this post and is available through GitHub also. Thanks you for the quick responses!

Changelog of 5.9.1:

• Fix new FFBv3 model not working on Legacy

• Fix FFB being broken on MOZA wheels (Revert FFB playback to more compatible method)

• Fix FFB shutdown keeping game process open

Downloads

• Available from GitHub

• Or in the attached file in this post

"Project Skill Issue" handling overhaul

The reason I updated Manual Transmission with a new force feedback model is this handling mod. Unhappy with the lack of mods that implement my observations about GTA V handling and what values would feel good for a steering wheel, I set out to do it myself.

The result is a handling overhaul that addresses all ground-based vehicles to have

• realistic drive train values, using all my vehicle performance/drivetrain scripts

• traction values which feel intuitive on a steering wheel

The handling overhaul is free to download here from GTA5-Mods.com.

It is open to feedback and more refinement, more details on the 5mods page.

New here?

If you stumbled upon this post and you're not a member of my Patreon yet: Manual Transmission requires a subscription to activate. Please read this to know how to get access!

When no license is found yet, a demo mode is available in the menu, so you can try this out before committing!