/** 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
}