Custom Build without VR/XR

dbhvk · May 30, 2020, 12:44pm

I want to run a custom build of the engine with a few less KBs.
The first thing that came to mind was to get rid of the VR/XR modules which I don’t need. There may be some other stuff that is niche specific, if something else comes to mind please mention it.

Anyways, I want to do a custom build of the opensource engine, but I am afraid to break things in the process. Any tips on how to exclude certain parts cleanly?

All my projects are and will be desktop/mobile experiences.

Thanks

yaustar · May 30, 2020, 1:08pm

This is something that has come up recently and there a GitHub about looking at how we can do that in a more modular way.

Not sure about WebXR support specifically as it’s integrated with the camera code.

Systems like Physics, Gamepad, animation, etc should be easier though.

dbhvk · May 30, 2020, 1:38pm

Could you share a link please?

yaustar · May 30, 2020, 2:01pm

We have started at looking for a new build system: https://github.com/playcanvas/engine/issues/2103

That said, for most systems, there’s one place that adds it to the engine IIRC and the files can be removed from the build file

Remove files here:

github.com

playcanvas/engine/blob/master/build/dependencies.txt

../src/polyfill/array-find.js
../src/polyfill/math-log2.js
../src/polyfill/math-sign.js
../src/polyfill/object-assign.js
../src/polyfill/pointer-lock.js
../src/polyfill/request-animation-frame.js
../src/polyfill/string.js
../src/core/core.js
../src/core/color.js
../src/core/guid.js
../src/core/time.js
../src/core/hash.js
../src/core/uri.js
../src/core/log.js
../src/core/path.js
../src/core/string.js
../src/core/debug.js
../src/core/event-handler.js
../src/core/events.js
../src/core/tags.js

This file has been truncated. show original

Here’s the hook up here:

github.com

playcanvas/engine/blob/master/src/framework/application.js#L583


this._inTools = false;


this._skyboxLast = 0;


this._scriptPrefix = options.scriptPrefix || '';


if (this.enableBundles) {
    this.loader.addHandler("bundle", new pc.BundleHandler(this.assets));
}


this.loader.addHandler("animation", new pc.AnimationHandler());
this.loader.addHandler("model", new pc.ModelHandler(this.graphicsDevice, this.scene.defaultMaterial));
this.loader.addHandler("material", new pc.MaterialHandler(this));
this.loader.addHandler("texture", new pc.TextureHandler(this.graphicsDevice, this.assets, this.loader));
this.loader.addHandler("text", new pc.TextHandler());
this.loader.addHandler("json", new pc.JsonHandler());
this.loader.addHandler("audio", new pc.AudioHandler(this._soundManager));
this.loader.addHandler("script", new pc.ScriptHandler(this));
this.loader.addHandler("scene", new pc.SceneHandler(this));
this.loader.addHandler("cubemap", new pc.CubemapHandler(this.graphicsDevice, this.assets, this.loader));
this.loader.addHandler("html", new pc.HtmlHandler());

There may be some dependencies else where but that’s where I would start.