I’m able to load Havok WASM on the main thread using await HavokPhysics(). But, this throws an error inside a Web Worker:
RuntimeError: Aborted(CompileError: WebAssembly.instantiate(): expected magic word 00 61 73 6d, found 3c 21 44 4f @+0). Build with -sASSERTIONS for more info.
Could anyone please share if they were able to run Havok inside a Web Worker?
For additional context, I’m able to load Ammo WASM successfully on both the main thread and in a Web Worker
There’s a couple of difficulties if you’re trying to use Havok from multiple web workers simultaneously, but I think it should be possible to use from just one (though, I haven’t tried.)
The error you’re seeing is because WASM modules expect to begin with a special identifier (\0asm) which does not appear in yours - instead, it has <!DO which looks like you’re trying to instantiate a WASM with an HTML page, rather than the module data?
@eoin Does running importScripts(<PATH_TO_HavokPhysics_umd.js>) and await HavokPhysics() inside a Web Worker script mean that I’m trying to instantiate a WASM with an HTML page, rather than the module data? Could you please share more details on how I can instantiate a WASM with the module data instead?
my two cents - it is trying to download the wasm file, but it is 404-ing, so you get an html page. When initializing the havok module you can pass the URL from which the wasm will be downloaded. might be the way to go here
Ooh, thank you, @RaananW ! After passing in the wasm path, it seems to be working:
const HK = await HavokPhysics({ locateFile: () => <PATH_TO_HavokPhysics.wasm>});
awesome! 