https://github.com/oseiskar/js-car

2D JavaScript car dynamics simulation
https://github.com/oseiskar/js-car

javascript physics physics-2d physics-simulation simulation

Last synced: 3 months ago
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2D JavaScript car dynamics simulation

• Host: GitHub
• URL: https://github.com/oseiskar/js-car
• Owner: oseiskar
• License: mit
• Created: 2019-02-23T18:01:36.000Z (almost 6 years ago)
• Default Branch: master
• Last Pushed: 2020-02-02T21:25:31.000Z (almost 5 years ago)
• Last Synced: 2024-10-13T02:12:53.475Z (4 months ago)
• Topics: javascript, physics, physics-2d, physics-simulation, simulation
• Language: JavaScript
• Homepage: https://oseiskar.github.io/js-car/
• Size: 73.2 KB
• Stars: 18
• Watchers: 3
• Forks: 4
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.txt

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README

        
# JavaScript 2D car dynamics simulation

### Physics model features:

 * auto-generated track

 * collisions with the 4 walls

 * basic static and dynamic friction

 * air drag applied to the center of mass

 * "arrow-key steering aids": velocity-based limitations to steering angle

  and its change rate

The physics model is "as simple as possible": Frictional forces are applied to

two points: the center of the front and rear axle instead of the four wheels

separately. The car is therefore actually modeled more like a "motorcycle that

does not bank". This is the same as assuming a lot of symmetry between the

forces to the left and right wheel on each axle, i.e.,

 * no tire slip due to deformations

 * no suspension

 * no roll

 * equal coefficients of friction

*TODO*:

 * brakes

 * non-constant torque from engine

 * noise

### AI drivers

 * PID control with a few tricks

 * Route planning with an ad-hoc "rubber band model" (uses a web worker)

*TODO*

 * Physics-based controller (non-PID)