(suggestion) Convert sdl.Rect Fields from int32 to int about go-sdl2

[veeableful]

Thanks @Priff13. I think I will have to postpone it due to the amount of effort that it would require for me to maintain by myself but if you would like to create a pull request, it would be greatly appreciated!

[veeableful]

Hi @Priff13, it was done to keep compatibility with SDL2’s native C integers. Would you happen to have a suggestion on how to make the fields int and keep them compatible?

[Priff13]

Hi @Priff13, it was done to keep compatibility with SDL2’s native C integers. Would you happen to have a suggestion on how to make the fields int and keep them compatible?

@veeableful, the way that I would go about it is like this:
I would convert the struct types to int, but keep the old struct, like this:

type Rect struct {
	X, Y, W, H int
}

type rect_internal struct {
	X, Y, W, H int32
}

I see that the function func (a *Rect) cptr() *C.SDL_Rect is the primary function that is used when interacting with C, so I would adjust it to work like this:

func (a *Rect) cptr() *C.SDL_Rect {
	b := &rect_internal{ X: int32(*a.X), Y: int32(*a.Y), W: int32(*a.W), H: int32(*a.H) }
	return (*C.SDL_Rect)(unsafe.Pointer(b))
}

In the rest of the cases where sdl.Rect is used, all that would need to be done is convert the fields to or from int32.

It's not an insignificant amount of changes, but I believe that it would be overall beneficial for the developer experience.

PS: Applying the same changes to sdl.Point would be greatly appreciated.