Collision between box and convex does not work properly

[pmndrs]

Collision between box and convex does not work properly

[codynova]

Hi @OliverXH, as @swift502 mentioned, your demo is running cannon (cannon.js) and not cannon-es. I believe the collision issues should be resolved in this lib. I'm closing this for now, but if you find bugs with cannon-es please feel free to open an issue - or ping me here if this should be reopened.

[marcofugaro]

The convex body collisions still look fine in cannon-es:

https://raw.githack.com/react-spring/cannon-es/examples-update/examples/stacks.html

The demo you provided has too much stuff going on to be able to debug. If you can provide a minimal example like the example I posted, running cannon-es, and with the issue happening, we might consider looking at it.

[swift502]

Can confirm this is a big issue in Cannon. Convex v Convex and Box v Convex seem to be broken in subtle ways.
@robrohan tackled this in Dapao, however apparently unsuccessfully.

The supplied demo seems to be running Cannon? So we can port to cannon-es to see if the issue persists.
If this problem is resolved, I will definitely switch cannon-es myself. 👍

[swift502]

I tried porting the demo but I can't get the collisions to work at all. The ramp just falls through the floor with cannon-es.
Tried my best. I guess the convex body creation process has changed a bit since cannon...

[codynova]

There are a couple API updates in cannon-es that are mentioned in the readme. For ConvexPolyhedron, the constructor API has been standardized to take an options object as the argument. You can check out the constructor in the source code, it supports pretty much all the same options as Cannon.js.