C++ CClientPlayer::SetNametagDistance方法代码示例

//.........这里部分代码省略.........
                        break;
                }
            }
        }
    }

    // Grab the local player vehicle
    CClientVehicle* pLocalVehicle = pLocalPlayer->GetOccupiedVehicle();
    CVehicle*       pLocalGameVehicle = NULL;
    if (pLocalVehicle)
        pLocalGameVehicle = pLocalVehicle->GetGameVehicle();

    CMatrix CameraMatrix;
    g_pGame->GetCamera()->GetMatrix(&CameraMatrix);

    // Remove collision from our local vehicle (if we have one)
    if (pLocalVehicle)
        pLocalVehicle->WorldIgnore(true);

    // Draw the nametags we need to
    CVector                                     vecPlayerPosition;
    CClientVehicle*                             pPlayerVehicle = NULL;
    float                                       fDistanceExp;
    bool                                        bCollision;
    CColPoint*                                  pColPoint = NULL;
    CEntity*                                    pGameEntity = NULL;
    CClientEntity*                              pEntity = NULL;
    CClientPlayer*                              pPlayer;
    CClientStreamElement*                       pElement;
    list<CClientStreamElement*>::const_iterator iter = m_pPlayerStreamer->ActiveElementsBegin();
    for (; iter != m_pPlayerStreamer->ActiveElementsEnd(); ++iter)
    {
        pElement = *iter;
        if (!pElement->IsStreamedIn())
            continue;
        if (pElement->GetType() != CCLIENTPLAYER)
            continue;
        pPlayer = static_cast<CClientPlayer*>(pElement);
        if (pPlayer->IsLocalPlayer())
            continue;

        // Get the distance from the camera
        pPlayer->GetPosition(vecPlayerPosition);
        fDistanceExp = pPlayer->GetExpDistance();
        pPlayerVehicle = pPlayer->GetOccupiedVehicle();

        // Is he in the same vehicle as the local player?
        if ((pSniperTargetedPlayer == pPlayer) || (pSniperTargetedVehicle && pSniperTargetedVehicle == pPlayerVehicle) ||
            (pLocalVehicle && pLocalVehicle == pPlayerVehicle) || (fDistanceExp < DEFAULT_VIEW_RANGE_EXP && pPlayer->IsOnScreen()))
        {
            SLineOfSightFlags flags;
            flags.bCheckBuildings = true;
            flags.bCheckVehicles = true;
            flags.bCheckPeds = false;
            flags.bCheckObjects = true;
            bCollision = g_pCore->GetGame()->GetWorld()->ProcessLineOfSight(&CameraMatrix.vPos, &vecPlayerPosition, &pColPoint, &pGameEntity, flags);
            if (!bCollision || (pGameEntity && pPlayerVehicle && pGameEntity == pPlayerVehicle->GetGameEntity()))
            {
                pPlayer->SetNametagDistance(sqrt(fDistanceExp));
                playerTags.push_front(pPlayer);
            }

            // Destroy the colpoint
            if (pColPoint)
                pColPoint->Destroy();
        }
    }

    // Readd collision from our local vehicle (if we have one)
    if (pLocalVehicle)
        pLocalVehicle->WorldIgnore(false);

    // Draw each player's nametag
    float                          fAlphaModifier;
    unsigned char                  ucAlpha;
    float                          fDistance;
    list<CClientPlayer*>::iterator iterTags = playerTags.begin();
    for (; iterTags != playerTags.end(); ++iterTags)
    {
        pPlayer = *iterTags;
        fDistance = pPlayer->GetNametagDistance();

        static float fFullAlphaDistance = 7.0f;
        if ((fDistance < fFullAlphaDistance) || (pSniperTargetedPlayer && pSniperTargetedPlayer == pPlayer) ||
            (pSniperTargetedVehicle && pSniperTargetedVehicle == pPlayer->GetOccupiedVehicle()))
        {
            fAlphaModifier = 1.0f;
        }
        else
        {
            fAlphaModifier = 1.0f - ((fDistance - fFullAlphaDistance) / (DEFAULT_VIEW_RANGE - fFullAlphaDistance));
        }

        // Calculate the alpha for the nametag
        ucAlpha = static_cast<unsigned char>(180.0f * fAlphaModifier);

        // Draw the tag
        DrawTagForPlayer(pPlayer, ucAlpha);
    }
}