/** Determine the nearest kart or item and update the current target
* accordingly.
*/
void Swatter::chooseTarget()
{
// TODO: for the moment, only handle karts...
const World *world = World::getWorld();
Kart *closest_kart = NULL;
float min_dist2 = FLT_MAX;
for(unsigned int i=0; i<world->getNumKarts(); i++)
{
Kart *kart = world->getKart(i);
// TODO: isSwatterReady(), isSquashable()?
if(kart->isEliminated() || kart==m_kart)
continue;
// don't squash an already hurt kart
if (kart->isInvulnerable() || kart->isSquashed())
continue;
float dist2 = (kart->getXYZ()-m_kart->getXYZ()).length2();
if(dist2<min_dist2)
{
min_dist2 = dist2;
closest_kart = kart;
}
}
m_target = closest_kart; // may be NULL
}
/** Squash karts or items that are around the end position (determined using
* a joint) of the swatter.
*/
void Swatter::squashThingsAround()
{
const KartProperties* kp = m_kart->getKartProperties();
// Square of the minimum distance
float min_dist2 = kp->getSwatterDistance2();
const World* world = World::getWorld();
// Get the node corresponding to the joint at the center of the swatter
// (by swatter, I mean the thing hold in the hand, not the whole thing)
scene::ISceneNode* swatter_node = m_scene_node->getJointNode("Swatter");
assert(swatter_node);
Vec3 swatter_pos = swatter_node->getAbsolutePosition();
m_swat_sound->position(swatter_pos);
m_swat_sound->play();
// Squash karts around
for(unsigned int i=0; i<world->getNumKarts(); i++)
{
Kart *kart = world->getKart(i);
// TODO: isSwatterReady()
if(kart->isEliminated() || kart==m_kart)
continue;
// don't swat an already hurt kart
if (kart->isInvulnerable() || kart->isSquashed())
continue;
float dist2 = (kart->getXYZ()-swatter_pos).length2();
if(dist2 >= min_dist2) continue; // too far away, ignore this kart
kart->setSquash(kp->getSquashDuration(), kp->getSquashSlowdown());
if (kart->getAttachment()->getType()==Attachment::ATTACH_BOMB)
{ // make bomb explode
kart->getAttachment()->update(10000);
HitEffect *he = new Explosion(m_kart->getXYZ(), "explosion");
if(m_kart->getController()->isPlayerController())
he->setPlayerKartHit();
projectile_manager->addHitEffect(he);
m_kart->handleExplosion(m_kart->getXYZ(), /*direct_hit*/ true);
} // if kart has bomb attached
World::getWorld()->kartHit(kart->getWorldKartId());
} // for i < num_kartrs
// TODO: squash items
}
/** General update function called once per frame. This updates the kart
* sectors, which are then used to determine the kart positions.
* \param dt Time step size.
*/
void LinearWorld::update(float delta)
{
// run generic parent stuff that applies to all modes. It
// especially updates the kart positions.
WorldWithRank::update(delta);
if (m_last_lap_sfx_playing && m_last_lap_sfx->getStatus() != SFXManager::SFX_PLAYING)
{
music_manager->getCurrentMusic()->resetTemporaryVolume();
m_last_lap_sfx_playing = false;
}
const unsigned int kart_amount = getNumKarts();
// Do stuff specific to this subtype of race.
// ------------------------------------------
for(unsigned int n=0; n<kart_amount; n++)
{
KartInfo& kart_info = m_kart_info[n];
Kart* kart = m_karts[n];
// Nothing to do for karts that are currently being rescued or eliminated
if(kart->playingEmergencyAnimation()) continue;
// ---------- deal with sector data ---------
// update sector variables
int prev_sector = kart_info.m_track_sector;
m_track->getQuadGraph().findRoadSector(kart->getXYZ(),
&kart_info.m_track_sector);
kart_info.m_on_road = kart_info.m_track_sector != QuadGraph::UNKNOWN_SECTOR;
if(kart_info.m_on_road)
{
kart_info.m_last_valid_sector = kart_info.m_track_sector;
kart_info.m_last_valid_race_lap = kart_info.m_race_lap;
}
else
{
// Kart off road. Find the closest sector instead.
kart_info.m_track_sector =
m_track->getQuadGraph().findOutOfRoadSector(kart->getXYZ(), prev_sector );
}
// Update track coords (=progression)
m_track->getQuadGraph().spatialToTrack(&kart_info.m_curr_track_coords,
kart->getXYZ(),
kart_info.m_track_sector );
} // for n
// Update all positions. This must be done after _all_ karts have
// updated their position and laps etc, otherwise inconsistencies
// (like two karts at same position) can occur.
// ---------------------------------------------------------------
updateRacePosition();
for (unsigned int i=0; i<kart_amount; i++)
{
// ---------- update rank ------
if (m_karts[i]->hasFinishedRace() || m_karts[i]->isEliminated()) continue;
// During the last lap update the estimated finish time.
// This is used to play the faster music, and by the AI
if (m_kart_info[i].m_race_lap == race_manager->getNumLaps()-1)
{
m_kart_info[i].m_estimated_finish = estimateFinishTimeForKart(m_karts[i]);
}
checkForWrongDirection(i);
}
#ifdef DEBUG
// FIXME: Debug output in case that the double position error occurs again.
std::vector<int> pos_used;
pos_used.resize(kart_amount+1, -99);
for(unsigned int i=0; i<kart_amount; i++)
{
if(pos_used[m_karts[i]->getPosition()]!=-99)
{
for(unsigned int j =0; j<kart_amount; j++)
{
printf("kart id=%d, position=%d, finished=%d, laps=%d, distanceDownTrack=%f %s\n",
j, m_karts[j]->getPosition(),
m_karts[j]->hasFinishedRace(),
m_kart_info[j].m_race_lap,
getDistanceDownTrackForKart(m_karts[j]->getWorldKartId()),
(m_karts[j]->getPosition() == m_karts[i]->getPosition() ? "<--- !!!" : ""));
}
}
pos_used[m_karts[i]->getPosition()]=i;
}
#endif
} // update