basegameentity.cpp

很好的编程实例 有很多 从中可以学到很多东西

#include "BaseGameEntity.h"
#include <cassert>



int BaseGameEntity::m_iNextValidID = 0;



//----------------------------- SetID -----------------------------------------
//
//  this must be called within each constructor to make sure the ID is set
//  correctly. It verifies that the value passed to the method is greater
//  or equal to the next valid ID, before setting the ID and incrementing
//  the next valid ID
//-----------------------------------------------------------------------------
void BaseGameEntity::SetID(int val)
{
  //make sure the val is equal to or greater than the next available ID
  assert ( (val >= m_iNextValidID) && "<BaseGameEntity::SetID>: invalid ID");

  m_ID = val;
    
  m_iNextValidID = m_ID + 1;
}