Reactor

Reactor is a physics engine developed by the Irish software company Havok for use in Autodesk 3ds Max. Reactor was fully integrated with 3ds Max from versions 5 to 2011. In 3ds Max 2012, Reactor was replaced by a PhysX-based engine called MassFX.[1] Reactor was often used for realistic physics simulation that would be difficult or time-consuming to animate by hand.

## Dynamics types

Reactor is capable of computing rigid body, soft body, cloth, and rope collisions. Reactor can also simulate dynamics of any supported type interacting with a water volume, with adjustable viscosity and depth.

## Forces and constraints

Reactor includes a large number of forces that can be used in simulation, apart from the default gravity: springs, dashpots, motors, wind, fractures (breakable objects), and a "toy car" type, with definable body/axis/wheels. Reactor also has many constraints available, including hinges, point-to-point constraints, prismatic constraints, car-wheel constraints, point-to-path constraints, and ragdoll constraints to simulate a lifeless body. In addition, Reactor is compatible with Space Warp modifiers in 3ds Max.

## References

1. ↑ "3ds Max 2012 released: new MassFX system overview". 2011-04-08. http://physxinfo.com/news/5519/3ds-max-2012-released-new-massfx-system-overview/. Retrieved 2011-06-08.

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Physics engines (list)

* Game physics
* Procedural animation
* Physically based animation
* Ragdoll physics

Free /
open source|

* Box2D
* Bullet
* Cannon.js
* Chipmunk
* Newton Game Dynamics
* Open Dynamics Engine
* OPAL
* Physics Abstraction Layer
* PhysX
* Phyz
* Project Chrono
* Siconos
* Simulation Open Framework Architecture
* Tokamak

Proprietary|

* AGX Multiphysics
* Algodoo
* Chipmunk
* Digital Molecular Matter
* Euphoria
* Havok
* Reactor
* Vortex

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