C++ Lixxie::is_last_frame方法代码示例

void update_shrugger(Lixxie& l, const UpdateArgs& ua)
{
    ua.suppress_unused_variable_warning();

    if (l.is_last_frame()) l.become(LixEn::WALKER);
    else l.next_frame();
}

void update_splatter(Lixxie& l, const UpdateArgs& ua)
{
    ua.suppress_unused_variable_warning();

    if (l.is_last_frame()) l.become(LixEn::NOTHING);
    else l.next_frame();
}

void update_ascender(Lixxie& l, const UpdateArgs& ua)
{
    ua.suppress_unused_variable_warning();

    // normally, move up once, but not on the last frame
    if (l.get_frame() != 5) l.move_up();

    if (l.is_last_frame()) l.become(LixEn::WALKER);
    else l.next_frame();
}

void update_exiter(Lixxie& l, const UpdateArgs& ua)
{
    ua.suppress_unused_variable_warning();

    int x = l.get_special_x();
    if (x < 0) {
        l.set_x(l.get_x() + 1);
        ++x;
    }
    else if (x > 0 && x < 1000) {
        l.set_x(l.get_x() - 1);
        --x;
    }
    l.set_special_x(x);

    if (!l.is_last_frame()) l.next_frame();
    else l.set_special_x(1000);
}

void update_faller(Lixxie& l, const UpdateArgs& ua)
{
    for (int i = 0; i <= l.get_special_y() && l.get_ac() == LixEn::FALLER;++i){
        // a bit kludgy, we can't do such a thing for flingers etc, since
        // they might be nonconstant.
        if (l.get_foot_encounters() & Lookup::bit_trampoline) {
            // stop falling, so the trampoline can be used
            break;
        }
        else if (l.is_solid(0, i+2)) {
            l.move_down(i);
            l.set_special_x(l.get_special_x() + i);

            // Schirm in letzter Sekunde?
            if (l.get_special_x() > Lixxie::distance_safe_fall
             && !l.get_floater()) {
                l.become(LixEn::SPLATTER);
                l.play_sound(ua, Sound::SPLAT);
                // Nicht explodieren lassen, das täte er bei 76 :-)
                if (l.get_updates_since_bomb() == 75)
                 l.set_updates_since_bomb(0);
            }
            else if ((l.get_special_x() <= 9 && l.get_frame() < 1)
             ||       l.get_special_x() == 0) {
                l.become(LixEn::WALKER);
                if (l.get_runner()) l.set_frame(6);
                else                l.set_frame(8);
            }
            else if (l.get_frame() < 2) {
                l.become(LixEn::WALKER);
                l.set_frame(0);
            }
            else if (l.get_frame() < 3) {
                l.become(LixEn::LANDER);
                l.set_frame(1);
            }
            else {
                l.become(LixEn::LANDER);
                // use the regular frame 0
            }
        }
    }

    if (l.get_ac() == LixEn::FALLER) {
        l.set_special_x(l.get_special_x() + l.get_special_y());
        l.move_down(l.get_special_y());

        if (l.get_special_y() < 8) l.set_special_y(l.get_special_y() + 1);

        // The last two frames alternate, the first frames are just the
        // initial frames of falling.
        if (l.is_last_frame()) l.set_frame(l.get_frame() - 1);
        else l.next_frame();

        if (l.get_floater()
         && l.get_special_x() >= Lixxie::distance_float) {
            const int sy = l.get_special_y();
            l.become(LixEn::FLOATER);
            l.set_special_y(sy);
        }
    }
}

void update_platformer(Lixxie& l, const UpdateArgs& ua)
{
    // Der Platformer hat zwei Zyklen. Im ersten Zyklus baut der den
    // Stein oberhalb der Laufhoehe, im allen nachfolgenden Zyklen weiter
    // unten.
    switch (l.get_frame()) {

    // Bauen
    case  1:
    case 17:
        l.set_special_x(l.get_special_x() - 1);
        if (l.get_frame() == 1) l.draw_brick(0, 0, 7, 1);
        else                    l.draw_brick(4, 2, 9, 3);
        if (l.get_special_x() < 3 && l.get_queue() <= 0)
            l.play_sound_if_trlo(ua, Sound::BRICK);
        break;

    case  4:
        // Sinnvolle Steinverlegung wie bei Frame 25 pruefen:
        // Kompletten naechsen Stein vorausplanen, bei Kollision NICHT drehen.
        if (platformer_is_solid(l, 6, -1)
         && platformer_is_solid(l, 8, -1) && platformer_is_solid(l, 10, -1)) {
            l.become(LixEn::WALKER);
        }
        break;

    case  6:
        if (! l.is_solid(0, -2)) l.move_up();
        else {
            l.become(LixEn::SHRUGGER2);
            l.set_frame(platformer_standing_up_frame);
        }
        // faellt durch

    case  7:
    case 21:
    case 22:
    case 23:
        // 2, 1 statt 2, 0, weil wir direkt ueber dem Boden pruefen wollen,
        // ob da ein Pixel ist. Sonst laufen die Walker durch.
        if (! platformer_is_solid(l, 2, 1)) l.move_ahead();
        else {
            l.become(LixEn::SHRUGGER2);
            l.set_frame(platformer_standing_up_frame);
        }
        break;

    case 25: // durchaus auch das letzte Frame
        // Kann noch ein Stein verlegt werden?
        if (l.get_special_x() <= 0) {
            if (l.get_queue() <= 0) {
                l.become(LixEn::SHRUGGER2);
                l.set_special_y(2); // Bei Klick 2 tiefer anfng. = weiterbauen
            }
            else {
                l.set_queue    (l.get_queue()     -  1);
                l.set_special_x(l.get_special_x() + 12);
            }
        }
        else if (platformer_is_solid(l, 2, 1)
         &&      platformer_is_solid(l, 4, 1)
         &&      platformer_is_solid(l, 6, 1)) {
            l.become(LixEn::SHRUGGER2);
            l.set_frame(platformer_standing_up_frame);
        }
        break;
    }

    if (l.get_ac() == LixEn::PLATFORMER) {
        if (l.is_last_frame()) l.set_frame(10);
        else                   l.next_frame();
    }
}

//.........这里部分代码省略.........
    // Die groessere Laenge wird pixelweise abgearbeitet.
    for (unsigned i = 0; i < (abs >= spe ? abs : spe); ++i) {
        // 2 * (... / 2) sorgt fuer das Einhalten der geraden X-Zahlen.
        // Es wird jeweils geguckt, ob der Zaehler i weit genug vor-
        // geschritten ist, damit in die kurze Richtung ein
        // Schritt stattfinden kann - wenn nicht, ist das Argument
        // von move_ahead stets 0. In die lange Richtung geht's immer.
        const int old_ex = l.get_ex();
        const int old_ey = l.get_ey();
        const Lookup::LoNr old_enc_foot = l.get_foot_encounters();
        const Lookup::LoNr old_enc_body = l.get_body_encounters();

        if (abs >= spe) {
            l.move_ahead(2 * ((i+1)*spe/2 / abs - i*spe/2 / abs));
            l.move_down(sgn);
        }
        else {
            l.move_down(sgn * ((i+1)*abs/spe - i*abs/spe));
            l.move_ahead(i%2 * 2);
        }

        int coll = jumper_and_tumbler_collision(l);
        if (coll == 0) {
            // nothing hit, proceed with next step for this frame
        }
        else if (coll == 1) {
            // we hit something, but don't have to reset anything. Stop motion.
            break;
        }
        else if (coll == 2) {
            // We hit something, reset encounters and check again at position.
            l.set_foot_encounters(old_enc_foot);
            l.set_body_encounters(old_enc_body);
            l.set_ey(l.get_ey()); // re-check encounters at current position
            break;
        }
        else if (coll == 3) {
            // Like coll == 2, but also reset position.
            l.set_foot_encounters(old_enc_foot);
            l.set_body_encounters(old_enc_body);
            l.set_ex(old_ex);
            l.set_ey(old_ey);
            // Do this for completely immobilizied tumblers
            if (l.is_solid(0, 0)) l.become(LixEn::STUNNER);
            break;
        }
        // end checking return val of collision
    }
    // end of motion

    // Wenn nicht beim Bewegen irgendwo angestossen...
    if (l.get_ac() == LixEn::JUMPER
     || l.get_ac() == LixEn::TUMBLER) {
        const int sp_y = l.get_special_y();
        if      (sp_y <= 12) l.set_special_y(sp_y + 2);
        else if (sp_y <  64) l.set_special_y(sp_y + 1);

        if (l.get_ac() == LixEn::TUMBLER
         && (l.get_foot_encounters() & Lookup::bit_trampoline)
         && l.get_special_y() > 0) {
            // don't use the tumbler frame selection that is used onwards here,
            // but take a nicer frame
            l.set_frame(std::max(0, l.get_frame() - 4));
        }
        else if (l.get_special_y() > 14) {
            if (l.get_floater()) {
                const int sx = l.get_special_x();
                const int sy = l.get_special_y();
                l.become(LixEn::FLOATER);
                l.set_special_x(sx);
                l.set_special_y(sy);
            }
            else if (l.get_ac() == LixEn::JUMPER)  {
                l.set_ac(LixEn::TUMBLER);
                l.set_frame(3); // override autoframechoice for 1 frame now
            }
            else { // we're already a tumbler
                tumbler_frame_selection(l);
            }
        }
        else if (l.get_ac() == LixEn::TUMBLER) {
            tumbler_frame_selection(l);
        }
        else {
            // we are a jumper
            if (l.is_last_frame()) {
                if (l.get_runner()) l.set_frame(12);
                else                l.set_frame(l.get_frame() - 1);
            }
            else l.next_frame();
        }
    }

    switch (l.get_ac()) {
        case LixEn::STUNNER:  l.play_sound(ua, Sound::OUCH);  break;
        case LixEn::SPLATTER: l.play_sound(ua, Sound::SPLAT); break;
        case LixEn::CLIMBER:  l.play_sound(ua, Sound::CLIMBER); break;
        default: break;
    }
}