How can I find out which object I hit with the ray? about oimophysics HOT 3 CLOSED

userData is part of the shape associated with the rigidbody. So in your case you won't find it in hit, but in the shape like shape.userData.
I know it works, since i integrated OIMO into a game engine and heavily rely on this feature to distinguish "Objects" by not only save the name of a body in the user data but a whole "gameObject".
You can use this shape.userData also in collisionEvents. Be also aware of the fact one body can have multiple shapes attached to them, each shape then has userData.

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Thank you very much! It works! I even can use my own data name, for example, myUserData instead of userData:

platform1Shape.myUserData = { name: "platform1" };

rayCastCallback.process = (shape, hit) => {
    console.log(shape.myUserData.name);
};

But I sure that by unspoken agreement, it's better to use the userData name like in another physics engines.

The documentation on shape has userData:

But It is strange that it cannot be found by searching the documentation:

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It is better to search in this file: node_modules\oimophysics\bin\js_modules\OimoPhysics.d.ts

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