Re: How to avoid repeated run-time lookup for the virtual function?

Hi all, I am trying to optimize a piece of code that looks like the
following:

struct Game;

struct PlayerBase { virtual void play(Game*) const = 0; ... };

template<unsigned int CATEGORY> struct Player : PlayerBase { virtual
void play(Game*) const; ... };

struct Game {
 bool gameOver();
 void start(const vector<PlayerBase*>& players) {
   while (! gameOver()) { // (1)
     for (vector<PlayerBase*>::const_iterator i=players.begin(); i!
=players.end(); ++i) // (2)
       (*i)->play(this); // (3)
   }
 }
};

At (3), there is some overhead because of the virtual function play(),
which is quite significant when play() itself is simple. But the
runtime resolution for the virtual function for each element in the
vector needs to be done only once at the first iteration of loop (1).
Is there a good way to achieve that?