as3isolib Actionscript 3 Isometric Library for Flash/Flex

as3isolib is a great isometric library for actionscript 3 by Justin Opitz.  This is a lower level isometric library that could be used in building your own isometric gaming engine or learning more about the popular isometric view in games or other flash content.

From building basic blocks…

To constructing sprites and objects with individual iso objects with their own bounding boxes.


This sample shows a two piece tree, a common issue with sprites in isometric is where to slice them up.  This sample shows a tree with the leaves able to be in front of a character so that you could walk under the tree and be in front of the trunk but covered by the trees.  Essentially height is respected.

Sample code for the tree tutorial:

package
{
        import as3isolib.display.IsoSprite;
        import as3isolib.display.primitive.IsoBox;
        import as3isolib.display.scene.IsoGrid;
        import as3isolib.display.scene.IsoScene;

        import flash.display.Loader;
        import flash.display.Sprite;
        import flash.events.Event;
        import flash.net.URLRequest;

        public class IsoApplication extends Sprite
        {
                private var scene:IsoScene;
                private var assets:Object;

                private var loader:Loader

                private function loadAssets ():void
                {
                        loader = new Loader();
                        loader.contentLoaderInfo.addEventListener(Event.INIT, loader_initHandler);
                        loader.load(new URLRequest("assets/swf/assets.swf"));

                }

                private function loader_initHandler (evt:Event):void
                {
                        buildScene();
                }

                private function buildScene ():void
                {
                        scene = new IsoScene();
                        scene.hostContainer = this;
                        scene.container.x = 200;
                        scene.container.y = 200;

                        var treeTrunkClass:Class = loader.contentLoaderInfo.applicationDomain.getDefinition("TreeTrunk") as Class;
                        var treeLeavesClass:Class = loader.contentLoaderInfo.applicationDomain.getDefinition("TreeLeaves") as Class;

                        var grid:IsoGrid = new IsoGrid();
                        grid.showOrigin = false;
                        scene.addChild(grid);

                        var s0:IsoSprite = new IsoSprite();
                        s0.setSize(25, 25, 65);
                        s0.moveTo(50, 50, 0);
                        s0.sprites = [treeTrunkClass];
                        scene.addChild(s0);

                        var s1:IsoSprite = new IsoSprite();
                        s1.setSize(125, 125, 100);
                        s1.moveTo(0, 0, 75);
                        s1.sprites = [treeLeavesClass];
                        scene.addChild(s1);

                        scene.render();
                }

                public function IsoApplication ()
                {
                        loadAssets();
                }
        }
}

current features

  • simple scene creation
  • 3 primitive types
  • base class for displaying user-created content
  • plenty of styling option on vector based primitives
  • integrates well with a variety of tween engines
  • standard 3D isometric positional sorting

So get busy building the flash version of roller coaster tycoon…

Advertisements

AS3 Flash 3D Engine Alternativa Platform Drops A Nuke – Isometric and FPS

This will blow you away. Found first via mrdoob (with quantum rss reading capability, before the message is concieved mrdoob is there).

Alternativa Platform, previously Alternativa Game, launched their Alternativa Platform milestone 1 and really one demo would have been enough but there are some great demos there that literally put them what appears a couple laps up on the 3d FPS style engine in Flash.

The engine is highly optimized and smooth, heavy on the processor, but using the ‘t’ key you can see some nice revealing triangle rendering. Also, playing with the field of view adds for some nice game effects. (try jumping on the fans in the half-life like room in the first demo)

Check the textures

See the Matrix

Get superpowers

From Above, Isometric

Here is what is to come from the platform:

Congrats to the Russian based Alternativa Platform, the world is watching.

AS3 Flash Isometric Game Engine Released – FFilmation 1.0

The FFilmation AS3 Flash Isometric Engine has been released into the wild.  Jordi Ministral has been generous to watch his creation grow and evolve with the help of the open source community and the flash community is one of the best open source communities out there even though the core (adobe flash) is still closed. Open sourcing is one of the best ways to market test your skills really and this engine has much anyone can learn in making isometric engines for flash. You can see our first post on this great engine here.

Here’s a peek at the classes in the API:

http://www.ffilmation.org/docs/api/1.0/class-summary.html

All Classes

BumpMap
fAiContainer
fCamera
fCharacter
fCollideEvent
fElement
fEngine
fEngineMaterial
fEngineSceneRetriever
fEventIn
fEventOut
fFloor
fGlobalLight
fLight
fMaterial
fMoveEvent
fObject
fOmniLight
fPlane
fProcessEvent
fRenderableElement
fScene
fSceneLoader
fWalkoverEvent
fWall
line
mathUtils
movieClipUtils
polygonProjection
polygonUtils
Vector
vport

Get your game on!

AS3 Flash Isometric Engine

Just got word of this great isometric engine similar to the Alternativa engine or zenbullets but with plans for open source. I checked out the demos and it looks well done and is pretty responsive. Once you get to heavy lighting it can draw a little slow (the cowboy becomes more John Wayne like with slow drawls) but this seems like a great base for an isometric AS3 engine.

The author, who is currently anonymous, describes it as:

The FFilmation Engine is an AS3 isometric programing engine, focused mainly on game development. The aim of the project is providing a robust development platform, where game designers can work on the game’s details and forget about the render engine. It is intended to be really usable from a “real production scenario” point of view.

Unfortunately there is no name associated with the project yet, I think it would be wise to let that be known. The author has some info on the level structure of files and 3 great demos.

Here are some features and plans for the engine:

  • Have a programming interface as small and easy as possible, no matter how complex the internal code is. From a software engineering point of view, the OO structure may not be as correct and clean as it could have been. It is not messy, but several decisions where made that improved performance and simplicity at the cost of breaking some “good OO programming” conventions.
  • Rendering performance is a major concern when designing all the algorythms. Some of them have been rewritten 4 o 5 times from scratch until one fastest enought was found. If it doesn’t perform well, it is not usable. We’ve all seen several impressive actionscript demos that look really cool and invite to be used in your next project. But then if the effect takes 90% of your CPU, you can’t build anything on top of that.
  • Graphic designers should be able to work on the application’s ( game or not ) environments without any programming skills, visually, and with almost immediate previews of what they are doing. Using the engine should be fun to some degree. If you have this terrific engine and adding a wall to your dungeon means you have to write 10 lines of OO gibberish, lazyness will eventually win you over. If art directors can draw and place the walls and lights an floors and enemies and see them appearing onscreen, you have more chances of reaching your deadline.
  • Flash has built-in drawing and animation tools. You should be able to take advantage of them !!

All this is important because in reality projects depend on limited resources. Resources are money and time, but also the enthusiasm of indie developers or single individuals doing stuff “for fun” in their bedrooms. Projects, specially the “for fun” ones, have more chances of completion if the production process is gratifying to some degree.

Here’s a list of highlited features:

  • One engine capable of handling several isometric scenes of different complexities.
  • Create scenes from human-readable XML definitions, allowing easy edition of the scene’s topology and contents
  • Graphic media can be split into several external resources and loaded when an scene needs them
  • Flat textures. Paint your grahics directly into flash. Walls, floors and celings are edited as 2D graphics and projected by the engine. Elements and animated characters can be animated via flash timeline, no need for complex programming.
  • Dynamic lighting, global lighting, real-time shadow projection. Multiple lights from multiple sources affecting the same objects.
  • Bump-mapped surfaces. Still somehow buggy and a serious performance killer, but already there.
  • An extendable material interface. MovieClip materials, autotiled materials, procedural materials.
  • Automatic zSorting of all surfaces and objects
  • Built-in collision detection. No need to program complex coordinate comparisions, simple listen to COLLISION events generated by the engine.
  • Basic AI API helpers such as “is character A visible from character B’s position ?”

I plan to make the engine open-source, but I’ll wait until I have a release “solid” and documented enough.

I am looking forward to more updates and to find out more about the author. We have some great engines underway in ’08 for AS3 and it looks to be a very fun year in that aspect.

Because it is an isometric engine is is not true 3d but sprite based animation. However with planes and objects other isometric 3d objects can be built such as walls, boxes, buildings, cubes, etc. I wonder if there are any toolkits being used or if this is all custom built?

Keep your eye on this space. It is very similar to the Alternative Engine.

Here are all the Demos:

And some docs on the architecture:

Check it out!