C / C++ / MFC

//Iain.h

namespace Iain // let's use one, even though I normally don't
{
    class CIain
    {
        virtual BOOL DoSomethingExciting (char a, int b, void *p) = 0;
    }

    CIain *GetAnIainInterface ();  // declared so we can use it at some point later.
};

// UsingIain.c

#include "Iain.h"

...
    CIain *pIain = Iain::GetAnIainInterface ();
    ASSERT(pIain); // hey, I wanna exist!
    
    pIain->DoSomethingExciting ('a', 97, NULL);
...

// Iain.c

#include "Iain.h"

class CIainImpl : public Iain::CIain
{
....
      virtual BOOL DoSomethingExciting (char a, int b, void *p)
      {
          return TRUE; //ok, not all that exciting
      }
};


CIainImpl  m_Iain;   // singleton instance.

Iain::GetAnIainInterface ()
{
    return &m_Iain;
}

namespace dtAI
{
void AICharacter::GoToWaypoint(float dt, const Waypoint* pWaypoint)
   {  
      //simple... just rotate to the waypoint over time and set a
      //positive velocity to go there
      mCharacter->RotateToPoint(pWaypoint->GetPosition(), dt * 3.0f);            

      //osg::Vec3 pVector = pWaypoint->GetPosition() - GetPosition();

      //pVector [2] = 0.0f;

      //float dir = std::abs(osg::RadiansToDegrees(atan2(pVector[0], -pVector[1])) - mCharacter->GetRotation());

      //while(dir >= 360.0f) dir -= 360.0f;

      //std::cout << dir << std::endl;
      //if(dir < 5.0f)
      //{
      mCharacter->SetSpeed(-float(mSpeed));

      if(!mCharacter->IsAnimationPlaying("Run"))
      {
         mCharacter->ClearAllAnimations(0.5f);
         mCharacter->PlayAnimation("Run");
      }
      //}
      //else
      //{
      //   mCharacter->SetVelocity(0.0f);
      //}
   }

   osg::Vec3 AICharacter::GetPosition() const
   {
     osg::Matrix mat = mCharacter->GetMatrixNode()->getMatrix();  
     osg::Vec3 pos(mat(3, 0), mat(3, 1), mat(3, 2));
     return pos;
   }
}

void GoToWaypoint(float dt, const Waypoint* pWaypoint);

T.RATHA KRISHNAN wrote:

void GoToWaypoint(float dt, const Waypoint* pWaypoint);

T.RATHA KRISHNAN wrote:

error C2440: 'initializing' : cannot convert from 'test *' to 'test'

test friend_test = new test();
friend_test->char_flag1 = false;

test friend_test;
friend_test.char_flag1 = false;

test * pfriend_test = new test();
pfriend_test->char_flag1 = false;
delete pfriend_test;

T.RATHA KRISHNAN wrote:

OK.Thank u.

T.RATHA KRISHNAN wrote:

What is ur opinion on using extern inplace of friend keyword?

T.RATHA KRISHNAN wrote:

It's advised by my organisation not to post original code.