/** Checks if any item was collected by the given kart. This function calls
* collectedItem if an item was collected.
* \param kart Pointer to the kart.
*/
void ItemManager::checkItemHit(AbstractKart* kart)
{
// We could use m_items_in_quads to to check for item hits: take the quad
// of the graph node of the kart, and only check items in that quad. But
// then we also need to check for any adjacent quads (since an item just
// on the order of one quad might get hit from an adjacent quad). Then
// it is possible that a quad is that short that we need to test adjacent
// of adjacent quads. And check for items outside of the track.
// Since at this stace item detection is by far not a bottle neck,
// the original, simple and stable algorithm is left in place.
for(AllItemTypes::iterator i =m_all_items.begin();
i!=m_all_items.end(); i++)
{
if((!*i) || (*i)->wasCollected()) continue;
// To allow inlining and avoid including kart.hpp in item.hpp,
// we pass the kart and the position separately.
if((*i)->hitKart(kart->getXYZ(), kart))
{
// if we're not playing online, pick the item.
if (!NetworkWorld::getInstance()->isRunning())
collectedItem(*i, kart);
else if (NetworkManager::getInstance()->isServer())
{
collectedItem(*i, kart);
NetworkWorld::getInstance()->collectedItem(*i, kart);
}
} // if hit
} // for m_all_items
} // checkItemHit
/** Checks if any item was collected by the given kart. This function calls
* collectedItem if an item was collected.
* \param kart Pointer to the kart.
*/
void ItemManager::checkItemHit(Kart* kart)
{
// Only do this on the server
if(network_manager->getMode()==NetworkManager::NW_CLIENT) return;
for(AllItemTypes::iterator i =m_all_items.begin();
i!=m_all_items.end(); i++)
{
if((!*i) || (*i)->wasCollected()) continue;
if((*i)->hitKart(kart))
{
collectedItem(i-m_all_items.begin(), kart);
} // if hit
} // for m_all_items
} // checkItemHit
void Actor::updateGravity(Map *map)
{
if( ay!=0) {
printf("y=%.2f; vy=%.2f; ay=%.2f\n",y,vy,ay);
}
vy=vy+ay;
vy=vy+GRAVITY; // earth gravity is 9.8 m/s^2, or whatever it works out to in your units.
// apply terminal velocity
if( vy<MINVEL) {
vy=MINVEL;
ay=0; // hit minimum negative velocity so stop jumping.
}
if( vy>MAXVEL) {
vy=MAXVEL;
ay=0; // hit maximum velocity so stop jumping.
}
// propose new position, and test for collision:
float newy=y+vy;
int i;
for( i=0; i<8; i++) {
int item=map->collide(x, newy+32, 32, 32 );
if( item==MAP_SKY ) break; // a safe place to move the item to.
if( (item!=MAP_BARRIER_A && item!=MAP_BARRIER_B)) {
item=map->collect(x,newy+32, 32, 32);
collectedItem(item);
break;
}
if( item==MAP_BARRIER_A || item==MAP_BARRIER_B) {
if(vy<0) break; // Jump up through walls!
}
// we don't want to be inside the object, so guess we can move half the distance.
vy/=2.0f;
newy=y+vy;
}
if( i==8) {
newy=y; // we can't find a place closer to the ground/ceiling so we need to stop moving.
vy=0;
ay=0;
}
y=newy; // our new vertical position with gravity and jumping factored in!
}
