ps/world.h

class CWorld
{
        CGame *m_pGame;
...
        CUnitManager *m_UnitManager;
...
}

ps/world.cpp

...
CWorld::CWorld(CGame *pGame):
        m_pGame(pGame),
        m_Terrain(new CTerrain()),
        m_UnitManager(new CUnitManager()),
        m_LOSManager(NULL),
        m_TerritoryManager(NULL)
{
}
...

• m_UnitManager(new CUnitManager()): initialized Unit Manager.