A cross-platform 2D physics engine and physics simulations. Built with WorldEngine.

https://github.com/eib/java-physics-demos https://github.com/eib/java-world-engine

How to run these demos:

• Download an "Executable JAR": https://github.com/eib/java-physics-demos/downloads

• Make sure Java 1.6 (or greater) is installed on your machine. (Type "java -version" into command prompt/terminal/...)

• Windows and OS X users can double-click on the Executable JAR file to run the suite of demos. Otherwise, it can be run via command-line:

    java -jar PhysicsDemo-vX.YY.jar
  

The physics engine has built-in support for a number of real-world forces. It can also support any number of user-definable forces.

Global forces:

• Gravity
• Gas/liquid drag (resistance to movement)
• Electric field (on charged particles)

Pair-wise forces:

• Collisions (with varying elasticity)
• Coulomb's law (interactions between charged particles)
• Buoyancy (when objects are overlapping a liquid)

All simulations include configuration panels to change the properties of the system.

Built-in simulations:

• Pendulum
• Solar system
• Coulomb's Law
• Charge particles in an electric field

These simulations were built on a custom graphics/world engine and may not have been ported to WorldEngine, yet. (They are still available on the downloads page.)

• Gravity
• Collision detection
• Buoyancy
• A sandbox to mix collisions, velocity, mass, and/or gravity.
• Piston: a "piston" interacting with tiny particles (a "gas") in an enclosed container.

MIT license: http://eib.mit-license.org/