I never looked closer into MiniB3D, but kind of remember it was pretty limited. Esp. when compared to copperlicht, that has a lot that even blitz couldn't offer, like realtime shadows or render to texture. Also, loading B3D with lightmaps, for instance exports from Terabits Decorator. It made it a pretty ideal candidate to simply wrap copperlicht commands in Blitz syntax, the rest is then only Basic to Javascript, that I've done to some degree with the BB2JS converter already. Also, the mini3Dsoundengine.js is ready to be added. Copperlicht lacks some stuff, but some of it can be written and added in html5 directly, and some things must just be hackamulated together, like for instance Linepicks. However, most ikely one will always have to follow some special procedure in writing for Blitz3D in a way that such a converter could process. Things like EntityPickMode that sets the pickability, must add this mesh and its triangles to a dynamic list of geometry that should be checked at all, just as an example on how things can get complicated quickly, as here you'd also have to parse the meshes recursively for child meshes (eg NPCs), which may be the wrong approach due to speed in WebGL anyway, so you would use invisible boxes attached to the NPCs to check linepicks - the conditions differ so much that these special proceedings were kind of necessary.
Copperlicht,js is the WebGL engine that the visual editor CopperCube uses when exporting for the WebGL target. Copperlicht.js can be scripted directly without the help of Coppercube, but Coppercube offers some convenient features, like a world editor that imports a nice range of formats and can put all assets into one CCBZ file that you will distribute (except textures and sounds). You can then also load this CCBZ file by script and or mod the html page that CopperCube exports.
CopperCube can also export for other targets such as DirectX, OGL, Mac, Android, if I'm not mistaken, but I'm only interested in WebGL.
There's also Vortex2 which has more features and shadows, but has a bug with the skeletal animation system so it diverted to vertex morph animation which is not good and practical.
Btw, I assume you already saw this, so you should join the site challenge for the waterfall entry as I think you will already win by default (only entry so far). Mark (markcwm) has now taken over and sponsoring this contest with a bit of reward or prizes will be given.
