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Physics Updates

1 min read#race-wars#gamedev#unreal

A round-up of what's changed in the Race Wars physics model this month. The big one is the suspension — we finally have a MacPherson strut setup that doesn't bottom out at speed.

What changed

  • Re-tuned spring rates per axle.
  • Added a small amount of negative camber gain under compression.
  • Replaced the magic dampening constant with a derived one from spring rate.
// derived damping coefficient
const damping = springRate * 0.35;

Next up: the tire model. Currently it's pure lateral-grip saturation, which is fine for arcade but causes weird behavior on kerbs. Plan is a simplified Pacjeka curve.