HelloWorld/main.cpp → HelloWorld/main.c

[LPGhatguy]

I think it'd be swell if the HelloWorld example were actually valid C instead of just C-shaped C++. There are a couple issues with the bindings preventing that:

• Change enums from C23/C++-style enums with reprs to constants
• Use NULL instead of nullptr
• Change struct initialization from C++-style Foo{...} to (Foo){...} or {...}.

[DagAgren]

I was messing around with this right now and it seems it mostly is valid C? You need to change nullptr to NULL, and JPC_RVec3{...} to (JPC_RVec3){...}, and it builds just fine?

[DagAgren]

(However, it does not seem to bounce, which I think it's meant to?)

[LPGhatguy]

I was messing around with this right now and it seems it mostly is valid C? You need to change nullptr to NULL, and JPC_RVec3{...} to (JPC_RVec3){...}, and it builds just fine?

Nice! Those are easy fixes. I didn't realize that C didn't have that style of struct initializer. I bet we can just use {...} in a lot of places.

(However, it does not seem to bounce, which I think it's meant to?)

Ah, you mean that when we compile the same HelloWorld example in the repo as C, the behavior changes? That's not good! 🤔

When I ported the example originally I verified that we got identical output between the original C++ HelloWorld, the new C-ish HelloWorld, and a Rust program using bindings to JoltC.

[DagAgren]

I didn't try it as .cpp, I needed it refactored a bit to run on iOS and converted to C at the same time.

But I figured it out, it seems the bodies had 0 restitution? If I set it manually it works.