la fonction avancer :

void perso::avancer (double time)

{
//Si il n'avancais pas a la frame precedente
if (m_avance==false)
{
m_avance = true;
m_tourneAGauche = false;
m_tourneADroite=false;
m_recule=false;
}

m_z = m_z+(cos(m_rotate*(M_PI/180))*time*10);
m_x = m_x+(cos(m_rotate*(M_PI/180))*time*10);



m_node->setPosition(irr::core::vector3df(m_x, m_y, m_z));
m_camera->setPosition(irr::core::vector3df(m_x-1.0f, m_y-1.0f, m_z-1.0f));

}

Sinon ton code ne marche pas.

la fonction avancer :

void perso::avancer (double time)

{
//Si il n'avancais pas a la frame precedente
if (m_avance==false)
{
m_avance = true;
m_tourneAGauche = false;
m_tourneADroite=false;
m_recule=false;
}

m_z = m_z+(cos(m_rotate*(M_PI/180))*time*10);
m_x = m_x+(cos(m_rotate*(M_PI/180))*time*10);



m_node->setPosition(irr::core::vector3df(m_x, m_y, m_z));
m_camera->setPosition(irr::core::vector3df(m_x-1.0f, m_y-1.0f, m_z-1.0f));

}

Sinon ton code ne marche pas.