Player::GetXPRestBonus in player.cpp

uint32 Player::GetXPRestBonus(uint32 xp)
{
    uint32 rested_bonus = (uint32)GetRestBonus();           // xp for each rested bonus

    if (rested_bonus > xp)                                   // max rested_bonus == xp or (r+x) = 200% xp
        rested_bonus = xp;

    SetRestBonus(GetRestBonus() - rested_bonus);

    TC_LOG_DEBUG("entities.player", "Player::GetXPRestBonus: Player '%s' (%s) gain %u xp (+%u Rested Bonus). Rested points=%f", GetGUID().ToString().c_str(), GetName().c_str(), xp + rested_bonus, rested_bonus, GetRestBonus());
    return HasAura(aura_id) ? rested_bonus * 2 : rested_bonus;
}