SamSuka
autotrashphysics

autotrashphysics

patreon


autotrashphysics activity

January 2024 update

Hi everyone,

To start the year off, I decided to keep working on motorcycle controls. Confident with how it feels, I have made them public on the Touristenfahrten world. They have:

- Physics based control method, where the front steering keeps the motorcycle balanced. No artificial fo...

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Steering wheel and force feedback support

Hi everyone!

The first working prototype has been made.
I wrote a separate software that reads data from VRC to send the FFB signals to the wheel.
There is currently a bit too much latency for use with this level of physics. A method with much less data latency will be required. This...

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Early December Update

Hi everyone,

Happy holidays if I don't post again this month!

The new rim models for select cars have been uploaded to the Touristenfahrten world.
My plan for the rest of December is to make from scratch, at least 1 car model of my choosing (in that case, I will post again). Othe...

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Touristenfahrten November Update

Hi everyone,

I started picking up 3D modelling as mentioned in the October update. I have started by modelling the rims for the cars I want to model.

This was done by getting image references from the internet and then tracing it in Blender. Next, I would adjust the parts to be curv...

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Touristenfahrten October update

Hi Everyone,

In October and early November, I worked on fixing issues related to the new Unity 2022 version and the custom car netcode.

Since my last post, I mentioned, "I will be doing bug fixes and getting the Touristenfahrten world to be a more complete experience". Now, with most ...

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Updates to Touristenfahrten

Hi everyone,

In September, I have done the following (don't worry, some of these will have their own posts with pictures or videos!):

  • Removed the respawn button in favour of a new UI that shows when you look at a designated parking spot.
  • Reduced suspension and steering...

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Rumble strip and suspension sounds

Hi everyone,

The Touristenfahrten world now has the rumble strip and new suspension sounds. Previously, there were only suspension sounds that only played when the suspension goes past its limit, now it is more progressive with varying sound pitch and volume depending on how hard the wheel ...

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Custom interaction framework

Hi everyone,

I have created the base of an interaction framework for use with my systems.

How does it work?

I will call objects you can grab "interactables". These interactables can be customised on how it's interacted with, such as:

  • Clicking or grab...

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Tire temperature and wear

Hi all,

I have developed a one dimension tire condition system that encompasses temperature and wear which influences the already existing tire pressure system.

After much testing, it was deemed not yet ready for racing application and was quite promising for road driving and drifting...

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Progress and outcome of FPS lag hunting

Hi everyone!

Let's start with the FPS hunting. So Unity UI was found to be a big factor in FPS, especially while driving. I will be disabling these out-of-car UI such as minimaps/spectator screen/leaderboard/other when you are driving.
In addition to this, I am also working on simplifie...

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Secondary culprit of poor VR FPS

Hello,

Other than the tire simulation being very expensive to do in Udon, I did a brief process of elimination on the Touristenfahrten world to see when VR FPS went back up while driving.

  • Disabling parts of the world such as all the trees/grass/bushes did not help.
  • Disa...

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Touristenfahrten has poor VR FPS

Hello,

I have noticed that this world has gotten worse VR performance over time. This weekend, I will be working on alleviating some of the performance costs with the goal of increasing FPS for VR.

On a test map with trees and foliage, I was able to get 60 FPS in VR while driving, w...

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Motorcycle controls (arcade)

Before I post the car physics and game progress, this video shows the arcade steering for the motorcycle. It works, however, I am not satisfied after having tried a MotoGP physics simulator.

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Motorcycle progress

I have attempted a few methods of controlling a bike so far and I want to continue persuing a physics-based method. This method is where it doesn't use any artificial forces to keep the bike upright, and only use the steering to balance the leaning once the bike is in motion.

The motorcycle...

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Physics v4 progress

Hi Everyone,

I have been working on this newer version of the code for the past few months. This is not backwards compatible with my current worlds as it was rewritten from scratch with knowledge that I have gained from the first few attempts (v1 to v3).

Here's a summary of what's dif...

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Session lap time display

Hi everyone,

For the past week, I have added a lap time display to the Touristenfahrten world. This will only show players in the instance and you can filter the list by car.


Thanks for you support!

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Power source and storage for Udon game systems

Hi everyone,

I have come up with a way to power and balance vehicles that don't use combustion engines such as the hover tank.


What is it?

A reactor powered energy system. It consists of a reactor that provides heat, this heat goes to...

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Transport Game (name pending) Progress

Hi everyone!

A simplified version (more FPS) of vehicle physics is on the way for this game. Featuring wheels that take on curbs correctly.

For the purpose of testing the logic of the transport game, I have imported 20km of my local area. This will be used for testing pick-up and dro...

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Game Time

Hello,

Thank you for your support. At this stage, I think I have a decent grasp on vehicle/tire physics. Next is to make more interactive experiences by creating game worlds. Two projects are planned, which will result in two new worlds. Additionally, the Udon Test world will also be revam...

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Turbo sound update

Hello!

I have updated the turbo sound to conform to the forced induction system upgrades. Going forward, "forced induction" will refer to a turbo and supercharger.

For forced induction, there will be a high pitched whining noise that can be heard over the engine and in the vicinity of...

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Hand Based Steering Prototype

Hi everyone!

Before we start the new year, I have come up with a prototype that lets you steer with your hands in VR.

What's in the prototype?

  • Lets you steer with your hands in VR.
  • Show the optimal steering angle (red overlaid steering wheel) in ...

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December Update & Supercharger Simulation

Hi everyone,

I wish you all a safe and enjoyable festive season, this may be the last update until January.

To keep up with the goals I have set since September, I have made a new column for the Patreon roadmap on my 2022-12-21 20:03:20 +0000 UTC View Post

Improved Turbo Simulation

Hi everyone,

I have improved the turbo simulation and it will be up on the Touristenfahrten map.
The calculations have been reworked to have the following:

  • Exhaust manifold pressure vs back pressure, this yields more accurate turbo lag results and is now able to have negative...

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VRChat New Years 2023 Video Submission

Hi all,

Here is the video submission!


Many thanks.

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VRChat New Years 2023 Video Concept

Hello there,

As said in my previous post I was passionate about submitting a video. There will be a submission, and it will promote VRChat Udon creation by showing some car footage - a very simple ~1 minute Udon promotion.

The original vision was to have a custom made filming set and ...

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Custom editor preview for v4

OK, so the previous post didn't want to embed the image and I have made this post just for that.


Cheers

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Projected development roadmap

Hi there,

Small update on the development roadmap. Car physics is currently the number one focus for my Udon work. Unfortunately this has slowed down due to my real work and life. Much of the work since September has been a variety of lunchtime to multi-day background work on the physics. F...

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Cars roadmap

I have previously said that the next post will be an overall roadmap of development in Udon, however, the subject of car development was too big to be combined with my other Udon work.


What will be different for the cars?

Firstly a new map for the Udon testing world will ...

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Tire Physics Roadmap

Hi everyone,

I have come up with a roadmap that outlines the development goals and usages of tire physics that are used in my systems.

The current tire physics model is to be ground truth for the feel of driving. Even though it feels nice to drive, the code for it is not maintainable,...

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High speed test track

There is now a high speed test track which is a fan recreation of the Special Stage Route X track.

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