APE - Actionscript Physics Engine

APE (Actionscript Physics Engine) is a free AS3 open source 2D physics engine for use in Flash and Flex, released under the MIT License. APE is written and maintained by Alec Cove.

08-04-07:
C++ SDL Port by Daniele Maiorana
06-21-07:
Version 0.45 alpha released, and a new demo. See history below for details.
06-11-07:
Version 0.4 alpha released.
05-07-07:
Version 0.3 alpha released.
02-01-07:
Java port of ape by Theo Galanakis. Performance is roughly twice as fast as AS3.
12-02-06:
Added a tutorial: Flex Builder 2 - Quick start.
10-13-06:
Go ape! APE initial release.

CircleParticles
-fixed or non-fixed
-variable mass, elasticity, and surface friction

RectangleParticles
-rotatable
-fixed or non-fixed
-variable mass, elasticity, and surface friction

WheelParticles
-traction and angular velocity
-fixed or non-fixed
-variable mass, elasticity, and surface friction

SpringConstraints
-stiffness
-collidable or non-collidible
-collidable constraints have variable width and scale

Grouping
-Composite class may contain Particles, and Constraints
-Group class may contain Particles, Constraints, and Composites

Collision
-multisampling
-static collision tests

Licensing
-non restrictive MIT License

Flex Builder 2 - Quick start
(More coming soon)

06-11-07 Version 0.45

Two new properties for much greater stability - constraintCycles and constraintCollisionCycles
Group now takes collideInternal setting as a parameter in the constructor
Fixed a bug where certain particles/constraints would be drawn before their parent hierarchy was added to the engine
Corrected misc documentation errors/omissions
New Demo - walker robot

06-11-07 Version 0.4

Changed license to MIT
Groups added.
Composites added.
Multisampling added.
Added a base class, AbstractItem, the parent of both constraints and particles for better OOD
Fixed particles are no longer repainted, unless new property 'alwaysRepaint' is true -- improves performance
Some performance tweaks, especially with loops.
The 'container' property for particles and constraints renamed to 'sprite', for clarity.
The APEngine.container property is now of type DisplayObjectContainer, not Sprite.
Renamed 'rotation' to 'radian' in RectangleParticle to be consistent with SpringConstraint. Thanks to Robert Brisita
Removed corner particles and edge particles due to grouping issue. The same effect can be read with Composites, or Groups
Fixed a bug with SpringConstraint restLength <= 0. Thanks to Robert Brisita.

alpha 0.45 is the current release.

c++ sdl port (0.45a) by Daniele Maiorana.

java port (0.2a) by Theo Galanakis.

alpha 0.45 API

http://ape.googlecode.com/svn/

The repository is bleeding edge. For stable versions use the downloads above.

To keep track of project development, announcements, and for help, subscribe to the Google APE-General group below.

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