This blog is moving

Posted March 25, 2008 by gamedevjuice
Categories: Uncategorized

This blog will be discontinued here at wordpress and will be moved to blogger, so please update your feed to:




Posted March 20, 2008 by gamedevjuice
Categories: Programming

Tags: , ,

gotapi.png I wanted to share this incredibly useful web site. No matter in what language you program this site is the equivalent to a Victorinox Swiss army pocket knife for a programmer. GotApi is a web language reference for a lot of languages and APIs. This is the supported stuff:

HTML / CSS / JavaScript

<!– HTML at
–> HTML at
CSS at
CSS at
CSS2 at
JavaScript/DOM at
JavaScript/DOM on Firefox at

AJAX and Frameworks

Google GWT
Prototype.js v1.5
Prototype.js v1.5 prototypejs.orgDusan Maliarik New
jQuery 1.0.3 – Rich Manalang
Yahoo! UI – Misha Peric
MochiKit – Arnar Birgisson


XSL at
XPath at
Schema (XSD) at
DocBook at


C, C++, STL at
RogueWave at
Dinkumware C/C++/STL – Jason Petrone
Berkeley DB XML – Michael Driscoll
OpenGL 2.1 – James Darpinian



PHP at
PHP Tutorials 600 from misc. sources
CakePHP at
Symfony at

Ruby / Rails

Ruby / Rails at &
Ruby Standard Packages at
RMagic – K. Adam Christensen


Python at

More Programming Languages

Sicstus Prolog
Perl at – Rowan Nairn
Erlang – Matthew Pflueger

Adobe / Macromedia

ActionScript (frames)
ColdFusion Tags/Functions
Flex 2


Groovy 1.1 beta 1 – Marc Dexet Updated

Drupal CMS

Drupal 4.7/HEAD – Z.Karman


Flickr API – parhuzamos


Orb API – Orb Networks



MySQL at
PostgreSQL at


J2SE v1.3.0
J2SE v1.4.2
J2SE v1.5.0
J2SE v1.5 faster without AWT/Swing
Spring Framework
Apache RegExp
Apache Commons Net

Application Testing

Selenium – Tom Smyth



Apache Ant

Ant at


Posted March 7, 2008 by gamedevjuice
Categories: Actionscript, flash

Tags: , , , , , , , , ,

In some cases in a project, we need to use striped sprites, it means an an animation of bitmaps which has their frames arranged in rows or columns like the examples below:



Sometimes the output of some graphic tools are this kind of sprite, for example this explosion generator: Actionscript do not brings anything built-in to handle this kind of sprites what I called Bitmap MovieClip, so I created a handy class to handle this situations where we need want to create an animation from an array of frames on an image.
The result is something like this:


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Got DS

Posted March 3, 2008 by gamedevjuice
Categories: DS, Uncategorized

Finally after a long wait I got a Nintedo DS.

I also bought a R4, so after a long season of gaming I will start to diving into the nuts and bolts of DS game programming.

Considerations in Collision Detection with PV3D

Posted February 28, 2008 by gamedevjuice
Categories: Actionscript, flash, Papervision3D

Tags: , , , , ,
use left and right arrows.

The collision detection in Papervision3D is not a big deal. Is easy to detect collision between two DisplayObject3D for that task PV3D provide us with two methods

public function hitTestPoint( x:Number, y:Number, z:Number ):Boolean

public function hitTestObject( obj:DisplayObject3D,multiplier:Number=1 ):Boolean

The first method is to test if the current DisplayObject3D is hitting a point in the scene and the second one is to detect if the current object is hitting another DisplayObject3D in the scene.
This is quite similar to the display architecture used by flash and its DisplayObject the difference is when we have a main DisplayObject3D with other objects 3D as childs.
In that case we would be tempted to use hitTestObject assuming that the collision test will be tested using the parent DisplayObject3D and their childs but that is wrong.
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Particle System for Papervision3D

Posted February 22, 2008 by gamedevjuice
Categories: Actionscript, flash, Papervision3D

Tags: , , , ,

A few weeks ago I made some modifications to the Zeus Lab particle system for Actionscript made by Josh Tynjala . The Josh’s particle system is neat, simple and if you combine the particle system with the use of filter you can obtain beautiful visual effects. I wanted to continue using it while experimenting with Papervision, the only problem is that it is 2D, so I made the port of the particle system to make it usable in a 3D environment, the result was some kind of distribution of the particle system because I didn’t touch the 2D code I only extended to be usable with the display architecture and classes in PV3D.

In the following example I will explain how to use it combined with the Effects branch to obtain something like this:


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Bump mapping in flash

Posted February 18, 2008 by gamedevjuice
Categories: Actionscript, Papervision3D

I’ve been playing around lately with Papervision3D 2.0 which still in alpha yet. But this new version has a lot of new cool features one of the new features are shaders. So make things look like this:


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