How to rebuild ammo.js for armory?

regexp · December 23, 2018, 5:43am

I installed the Python, Emscripten SDK, cmake, sources ammo.js (https://github.com/kripken/ammo.js/) and run make.py, but the ammo.js file appearing after the building, does not work correctly in the armory.

How to full rebuild the haxebullet?

zicklag · December 24, 2018, 2:06am

I don’t think there are any instructions out there for this yet. Just in the last week, Lubos has updated the Haxebullet bindings. As far as I can tell they are now based on the webidl description of the API and I think the Haxe bindings are generated by the code in this folder. There isn’t a .hxml file that I can see so I don’t know how to run the generator, though.

lubos · December 24, 2018, 8:32am

There should not be anything special regarding the ammo.js. What is not working? Any error messages?

danilk · December 26, 2018, 4:42am

Hello,

Ammo.js should just be a file in a javascript format. My understanding is Armory is not generating it everytime, but just dynamic binding through haxebullet.

For the haxebullet and ammo.js update, following is a small guide I contributed previously (but seem not officially publish yet)

github.com

armory3d/armory_docs/blob/master/dev/haxebullet.md

# HaxeBullet

## Bullet Physics
One of current Armory supported Physics Engine is through [Bullet Physics](https://pybullet.org/wordpress/) with [HaxeBullet](https://github.com/armory3d/haxebullet)

Please note, as at time of this written, HaxeBullet still does not support all of native C++ Bullet Physics implementation. Contribution is welcome!

Javascript backend for Krom/other Javascript deployments is based on [Ammo](https://github.com/kripken/ammo.js/).
Ammo supported Bullet API can be found in this [API Reference](https://github.com/kripken/ammo.js/blob/master/ammo.idl)

C++ backend for native C++ compile is based on [native Bullet Physics C++](https://github.com/bulletphysics/bullet3). Native implementation API docs can be found in this [API Reference](https://pybullet.org/Bullet/BulletFull/index.html)

For any HaxeBullet implementation, it is recommended to support APIs that are supported by both Ammo/native C++ Bullet codes to not run into different behavior on different platforms.

## Update HaxeBullet

- Install [Git](https://git-scm.com/download/win)
- Click the `Fork` button on [GitHub](https://github.com/armory3d/haxebullet)
- Pick a location, open a command line here and clone your forked repository
```

This file has been truncated. show original

One possible case (I encountered as did not realize) is that after haxebullet and ammo.js update, it is best to clean the project to see the effect.

One other important fact, ammo.js did not implement all of APIs of bullet. The most recent updated of ammo.js in Armory is base on last month’s master branch. So there maybe some differences by now.