/** Update the world and the track.
 *  \param dt Time step size.
 */
void SoccerWorld::update(float dt)
{
    updateBallPosition(dt);
    if (m_track->hasNavMesh())
    {
        updateKartNodes();
        updateAIData();
    }

    WorldWithRank::update(dt);
    WorldWithRank::updateTrack(dt);

    if (getPhase() == World::GOAL_PHASE)
    {
        if (m_goal_timer == 0.0f)
        {
            // Stop all karts
            for (unsigned int i = 0; i < m_karts.size(); i++)
                m_karts[i]->setVelocity(btVector3(0, 0, 0));
        }
        m_goal_timer += dt;

        if (m_goal_timer > 3.0f)
        {
            setPhase(WorldStatus::RACE_PHASE);
            m_goal_timer = 0.0f;
            if (!isRaceOver())
            {
                // Reset all karts
                for (unsigned int i = 0; i < m_karts.size(); i++)
                    moveKartAfterRescue(m_karts[i]);
                if (UserConfigParams::m_arena_ai_stats)
                    getKart(8)->flyUp();
            }
        }
    }
    if (UserConfigParams::m_arena_ai_stats)
        m_frame_count++;

}   // update
/** Update the world and the track.
 *  \param ticks Physics time steps - should be 1.
 */
void SoccerWorld::update(int ticks)
{
    updateBallPosition(ticks);
    if (Track::getCurrentTrack()->hasNavMesh())
    {
        updateSectorForKarts();
        updateAIData();
    }

    WorldWithRank::update(ticks);
    WorldWithRank::updateTrack(ticks);

    if (getPhase() == World::GOAL_PHASE)
    {
        if (m_goal_timer == 0)
        {
            // Stop all karts
            for (unsigned int i = 0; i < m_karts.size(); i++)
                m_karts[i]->setVelocity(btVector3(0, 0, 0));
        }
        m_goal_timer += ticks;

        if (m_goal_timer > stk_config->time2Ticks(3.0f))
        {
            setPhase(WorldStatus::RACE_PHASE);
            m_goal_timer = 0;
            if (!isRaceOver())
            {
                // Reset all karts
                for (unsigned int i = 0; i < m_karts.size(); i++)
                    moveKartAfterRescue(m_karts[i]);
                if (UserConfigParams::m_arena_ai_stats)
                    getKart(8)->flyUp();
            }
        }
    }
    if (UserConfigParams::m_arena_ai_stats)
        m_frame_count++;

}   // update