Feature/RGB shiftlights & dynamic rev limiter

[TiansuoLi]

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PR Description

Hi there! 👋

This PR introduces two new features aimed at enhancing the adaptive feedback experience:

✨ Dynamic Redline Detection

• Problem: The original rev limiter feedback relies on a fixed rpm / max_rpm ratio. Since redline RPM values vary widely across vehicles, this often leads to inaccurate trigger points and requires manual per-car tuning.
• Solution: The system now initializes using linear interpolation based on max_rpm, then reads real-time telemetry data (throttle position and RPM changes) to dynamically calculate the precise redline zone. A vehicle ID check is used to detect car swaps and automatically recalibrate.

🌈 RGB Shift Lights

• Feature: Displays real-time RGB color indicators via the controller's touchpad/light bar, simulating a racing-style shift light based on the current RPM relative to the detected redline.
• Color Logic: Green (low RPM) → Yellow (mid RPM) → Red (near redline) → Flashing (rev limiter engaged).
• Compatibility: Tested with DualSense and DualSenseEdge . Supports both native HID and DSX output modes. (Player LED control is limited in DSX mode, so lighting effects may differ slightly.)

⚙️ GUI Integration

• All new options are fully configurable via the Settings page in the GUI. TUI support was not updated in this PR — only the GUI received new settings for these features.

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A quick note: I'm not a professional developer, and I used AI assistance to help write parts of the code. As a result, some implementation details may differ slightly from the latest codebase conventions. I've done my best to keep things clean and functional, but I truly appreciate any feedback or suggestions for improvement!

Thanks for reviewing — hope you find these additions useful! 🙌

[HamzaYslmn]

Hi

Max RPM does not represent the redline.
Some vehicles hit the redline at 90%, while most electric vehicles reach it at 99%.

Max RPM only indicates the vehicle’s maximum RPM value.

I was also considering adding the RGB Shift Lights feature. Glad you added it; I’ll take a look when I have some free time.

Thanks for PR

[TiansuoLi]

Hi

Max RPM does not represent the redline. Some vehicles hit the redline at 90%, while most electric vehicles reach it at 99%.

Max RPM only indicates the vehicle’s maximum RPM value.

I was also considering adding the RGB Shift Lights feature. Glad you added it; I’ll take a look when I have some free time.

Thanks for PR

Hi,

Thanks for the reply! I'm aware of the distinction between max RPM and the actual redline. In the current implementation, I temporarily overwrite the max RPM value with the detected redline RPM purely to simplify the downstream trigger and LED calculations — this makes it much easier to pinpoint the exact shift point.

That said, you're absolutely right that there's no specific optimization for EVs yet. Single- or two-speed EVs could indeed cause persistent vibration at high speeds under this logic. Really appreciate the heads-up