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Do you mean I should include each of the derived class in the base class? In Astratta?

This is too ugly. It goes against every good rule of programming.
I will use another class as dispatcher...

Astratta.h


#ifndef ASTRATTA_H_
#define ASTRATTA_H_
class Astratta
{
public:
Astratta();
virtual ~Astratta();

I did it, the collide(Collision*) in every sub class and then in every sub class the othe methods:
collide(CollisionBox*)
collide(CollisionSphere*)




This isn't necessary true: when I...

First, thank you all for your answers.


What do you mean? I'm not sure to understand clearly. "collide" is virtual (pure, thought).



Which others two methods? The ones I suggested? To...

Hi to everyone,
I have a little problem with my classes but before describing the problem I wish to ask forgiveness if similar questions were made before. This forum is huge and I'm unsure what to...

Thank you very much for your replies guys.

I found what's the real problem: the destructor in the class Matrix is pure virtual, making it just virtual and giving him an (empty) definition the code...

I use GCC on Linux.
I know a derived class can access protected members, that's the reason _righe and _colonne are protected and not private.
But.....

@Muthuveerappan
Ok, now I'm really confused: your code compile and work O_o

I thought, as I've read since now, that templates cannot be virtual... so if this can be possibile what's wrong with my...

@Muthuveerappan
My apologize, I've read wrong your reply. (I read "they cannot" instead of "they can").

No, as far I found on Internet (and the error gcc give me) they cannot combined.

And...

I'm a bit confused JohnW,
thank you for your reply but your code won't even compile. As mine it won't for the same reason: a template function cannot be virtual.
The operator() in Matrix is a...

Hi to all,
I'm new to this forum, nice to meet you.

Let me explain my problem: I am from Java. Yes, I know there is no cure for this but please be patient with me, I'm a Java programmer not due...