Jak oprogramować strzelanie z pistoletu?

#include <vector>
#include <iostream>
#include <cstdlib>
#include <ctime>
class Object
{
protected:
    short int PosX, PosY;
    short int SpeedX, SpeedY;
    bool Move;
public:
    Object( short int PosX, short int PosY );
    void SetSpeed( short int SpeedX, short int SpeedY );
    void Stop();
    void MoveObject();
    void SetMoving();
    short int ReturnPosX();
    short int ReturnPosY();
};
Object::Object( short int PosX, short int PosY )
{
    Move = false;
    this->PosX = PosX;
    this->PosY = PosY;
    SpeedX = SpeedY = 0;
}
void Object::SetSpeed( short int SpeedX, short int SpeedY )
{
    this->SpeedX = SpeedX;
    this->SpeedY = SpeedY;
}
void Object::Stop()
{
    SpeedX = 0;
    this->SpeedY = 0;
    Move = false;
}
void Object::MoveObject()
{
    if( Move == true )
    {
        PosX += SpeedX;
        PosY += SpeedY;
    }
}
void Object::SetMoving()
{
    Move = true;
}
short int Object::ReturnPosX()
{
    return PosX;
}
short int Object::ReturnPosY()
{
    return PosY;
}
class Ammo
    : public Object
{
public:
    Ammo( short int PosX, short int PosY );
};
Ammo::Ammo( short int PosX, short int PosY )
    : Object( PosX, PosY )
{
}
class Pistol
    : public Object
{
    unsigned int Count;
    std::vector < Ammo >::iterator Iterator;
    std::vector < Ammo > PistolAmmo;
public:
    Pistol();
    void Fire();
    void MoveAmmo();
    void ShowAmmoPosition();
};
Pistol::Pistol()
    : Object( 0, 0 )
{
}
void Pistol::Fire()
{
    PistolAmmo.push_back( Ammo( PosX, PosY ) );
    Iterator = PistolAmmo.end() - 1;
    Iterator->SetSpeed(( rand() % 20 ) + 1, 0 );
    Iterator->SetMoving();
}
void Pistol::MoveAmmo()
{
    for( Iterator = PistolAmmo.begin(); Iterator != PistolAmmo.end(); Iterator++ )
    {
        Iterator->MoveObject();
    }
}
void Pistol::ShowAmmoPosition()
{
    for( Iterator = PistolAmmo.begin(), Count = 0; Iterator != PistolAmmo.end(); Iterator++, Count++ )
    {
        std::cout << "Pozycja pocisku " << Count << ": " << Iterator->ReturnPosX() << " " << Iterator->ReturnPosY() << std::endl;
    }
}
int main()
{
    srand( time( NULL ) );
    Pistol * NewPistol = new Pistol();
    for( unsigned int Count =( rand() % 15 ) + 1; Count > 0; Count-- )
    {
        NewPistol->Fire();
        NewPistol->MoveAmmo();
        NewPistol->ShowAmmoPosition();
        std::cout << "-------" << std::endl;
    }
    delete NewPistol;
}