Error after updating to Alpha 40 & updated recast.js

Bugs
1

Hi, I noticed I got an error after trying the latest alpha (40) with the updated recast.js.

I get an error on this line:
const navPlugin = new BABYLON.RecastJSPlugin();

error:
BJS - [15:35:52]: RecastJS is not ready. Please make sure you await Recast() before using the plugin.
Uncaught (in promise) TypeError: this.bjsRECAST.Vec3 is not a constructor
at new RecastJSPlugin (babylon.max.js:177643)

Not sure what changed and how to fix it? This ran without problems before…

2

Nevermind, just had to add await Recast() as the error stated, wasn’t sure where to add it.

3 Likes
3

May I ask how you fixed it? Having the same error but can’t get it to work?

4

Instead of using just this in my code:

const navPlugin = new BABYLON.RecastJSPlugin();

Provided you load the recast.js script in your HTML:
I had to first wait for the Recast function to complete, so the code needs to be changed to this, wrapped in an async function:

async function buildNav() {
    await Recast();
    console.log('recast loaded');
    const navPlugin = new BABYLON.RecastJSPlugin();
    console.log('nav plugin loaded');
}

buildNav();
5

cc @Cedric

6

Thank you, this got me further! I’ve also did the following to get the Recast import working (found this somewhere in the forums

// @ts-ignore
import Recast from "recast-detour"

Now the thing compiles but it hangs forever loading the page with not specific errormessage. Any ideas?

7

I’m not sure what the reason is, but for me building the navmesh takes a lot longer than before…
Perhaps yours is still building? Did you try just waiting for a long time to see if it finishes?

Edit: I removed the ‘solved’ flag from my post, since I’d like to wait for Cedric to check if I may have messed something up.

8

I waited a few minutes but nothing happened

9

@Censor There should be (almost) no difference in performance. Maybe I missed something with Emscripten. Do you have a PG I can try ?
@holger Same, do you have a PG I can check?

10

Ok, I see what I can do.

1 Like
11

So, I can reproduce. Not in a PG but in a local typescript project. I’ve forked and modified @RaananW 's babylonjs-webpack-es6. This is the change: recast init repro · blubberblah/babylonjs-webpack-es6@c1fbd74 · GitHub
Just clone the repo and do a npm install and npm start this should bring up the modified scene src/scenes/defaultWithTexture.ts
As you can see (hopefully), it just hangs forever. I guess I’m doing something fundamentally wrong :wink:

12

Let me take a look …

13

Hi @holger

I’ve published a new NPM package for recast-detour v1.4.0

Can you please try with updated version?

14

With latest version it works! Thank you @Cedric :slight_smile:

2 Likes
15

I believe there was another thread just started about the error I got (first post).
I’ll wait for the fix and try again, perhaps the issues will be gone and this thread can be closed.

By the way I really like what’s possible with recast and babylonJS :slight_smile: