# misyltoad/VPhysics-Jolt

Volt (VPhysics Jolt) is a replacement physics module for the Source Engine.

Repository: https://github.com/misyltoad/VPhysics-Jolt
Canonical: https://ross.abutalabs.com/products/vphysics-jolt
Language: C++
License: MIT
License Family: permissive
Last push: 2025-05-18T22:14:27+00:00

## Health v2 (maintenance only)
Score: 33/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 22, release rhythm 8, longevity 100
- inputs: {"age_days": 1467, "days_push": 472, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1437, forks 100 (observed 2026-08-28T04:04:43.559575+00:00)

## What it is
Volt (VPhysics Jolt) is a drop-in replacement physics module for Valve's Source Engine, replacing the legacy IVP/Havok-based VPhysics with Jolt Physics. It is designed for high performance, simulating thousands of physics objects simultaneously without degrading tick rate or framerate.

## Use cases
- replace the slow legacy VPhysics in Source Engine games with a fast modern physics engine
- simulate thousands of physics props in Garry's Mod without framerate collapse
- get ragdolls, constraints, triggers, and vehicles working through Jolt Physics in Source
- add Portal support and save/restore compatibility to a Jolt-based Source physics backend
- avoid physics solver crashes in Source Engine mods
- run a modern physics engine in Source Engine mods

## When to choose
- you run a Source Engine server or mod that needs high-performance physics with many active objects
- you want a mostly feature-complete VPhysics replacement built on Jolt Physics
- you need crash-resistant physics simulation in Source Engine games

## When to avoid
- you rely on raycast vehicles like the airboat, which are not yet supported
- you need breakable constraints, which are still missing
- you are not working with the Source Engine or its derivatives

## Facets
- artifact type: library
- maturity: active
- function: simulation, game-engine
- domain: simulation, graphics
- platform: cpp, windows, cross-platform
- tags: jolt-physics, source-engine, vphysics, physics-engine, modding, garrysmod, physics, game-development, linux

## Member repositories
- misyltoad/VPhysics-Jolt (main) score 33

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:43.559575+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:36:44.682473+00:00, confidence not recorded.
  - readme: https://github.com/misyltoad/VPhysics-Jolt (fetched 2026-08-28T04:04:43.559575+00:00, sha f46272ee9566)
- Data as of 2026-08-30T08:39:29.467469+00:00.