How to use array sort ?

[sodandk]

I have an array of
core::array<MY_Obj*> objects;

then I do
objects.sort();

and inside the MY_Obj I have:

bool operator<(const MY_Obj* a) const
{
return distance < a->distance;
};

but the sort operator never gets called ?

[CuteAlien]

The problem is that you have MY_Obj* and not MY_Obj. So the operator is never called as the type is not of the class MY_Obj but a pointer. So you are sorting by memory-address.

In short - use stl::vector in combination with std::sort instead of Irrlicht array, that allows passing functors. Irrlicht is still missing this.

[sodandk]

oh shoots... was converting all vectors to arrays ...

[CuteAlien]

Don't do that in your own application. My recommendation would be to use irrlicht core classes only when you are coding inside Irrlicht and otherwise to avoid them completely and use STL.

[sodandk]

why ?

[CuteAlien]

Depends on the applications. But in general STL is just more powerful, faster and more stable. Irrlicht core classes offer more or less the stuff needed inside the engine, while STL offers pretty much everything you need in a typical application.