Method CheckCursorTarget

engine/Poseidon/UI/InGame/InGameUIMenuSim.cpp:178–366

        }
    }
}

Target* InGameUI::CheckCursorTarget(Vector3& itPos, Vector3Par cursorDir, const Camera& camera, CameraType cam,
                                    bool knownOnly)
{
    AIUnit* unit = GWorld->FocusOn();
    AISubgroup* subgroup = unit->GetSubgroup();
    AIGroup* group = subgroup->GetGroup();
    EntityAI* vehicle = unit->GetVehicle();

    float maxVisDist = floatMax(vehicle->GetType()->GetIRScanRange(), TACTICAL_VISIBILITY);

    CollisionBuffer retVal;
    GLandscape->ObjectCollision(retVal, vehicle, nullptr, camera.Position(), camera.Position() + cursorDir * maxVisDist,
                                0, ObjIntersectView);
    // select first intersected object
    int minI = -1;
    float minT = 1e10;
    for (int i = 0; i < retVal.Size(); i++)
    {
        const CollisionInfo& info = retVal[i];
        if (!info.object)
        {
            continue;
        }
        if (info.under < minT)
        {
            minT = info.under;
            minI = i;
        }
    }
    Target* iTarget = nullptr;

    itPos = camera.Position();

#if 1
    if (minI >= 0)
    {
        // check intersection with land
        const CollisionInfo& info = retVal[minI];
        EntityAI* ai = dyn_cast<EntityAI, Object>(info.object);
        if (ai)
        {
            Vector3 iPos = info.object->WorldTransform().FastTransform(info.pos);
            Vector3 iDir = iPos - camera.Position();
            Vector3 iDirN = iDir.Normalized();
            float iDirSize = iDir * iDirN;
            Vector3 lPos;
            float isect = GLandscape->IntersectWithGroundOrSea(&lPos, camera.Position(), iDirN, 0, iDirSize * 1.1);
            // we know what is

            if (isect > iDirSize)
            {
                // no ground obstacle
                // check if we know the target
                if (knownOnly)
                {
                    iTarget = group->FindTarget(ai);