for(p0.Y=0; p0.Y<MAP_BLOCKSIZE; p0.Y++)

for(p0.Z=0; p0.Z<MAP_BLOCKSIZE; p0.Z++)

{

const MapNode &n = block->getNodeUnsafe(p0);

content_t c = n.getContent();

if (c >= m_aabms.size() || !m_aabms[c])

continue;

v3s16 p = p0 + block->getPosRelative();

for(std::vector<ActiveABM>::iterator

i = m_aabms[c]->begin(); i != m_aabms[c]->end(); ++i) {

if(myrand() % i->chance != 0)

continue;

// Check neighbors

if(!i->required_neighbors.empty())

{

v3s16 p1;

for(p1.X = p0.X-1; p1.X <= p0.X+1; p1.X++)

for(p1.Y = p0.Y-1; p1.Y <= p0.Y+1; p1.Y++)

for(p1.Z = p0.Z-1; p1.Z <= p0.Z+1; p1.Z++)

{

if(p1 == p0)

continue;

content_t c;

if (block->isValidPosition(p1)) {

// if the neighbor is found on the same map block

// get it straight from there

const MapNode &n = block->getNodeUnsafe(p1);

c = n.getContent();

} else {

// otherwise consult the map

MapNode n = map->getNodeNoEx(p1 + block->getPosRelative());

c = n.getContent();

}

std::set<content_t>::const_iterator k;

k = i->required_neighbors.find(c);

if(k != i->required_neighbors.end()){

goto neighbor_found;

}

}

// No required neighbor found

neighbor_found:

// Call all the trigger variations

i->abm->trigger(m_env, p, n);

i->abm->trigger(m_env, p, n,

active_object_count, active_object_count_wider);

// Count surrounding objects again if the abms added any

if(m_env->m_added_objects > 0) {

active_object_count = countObjects(block, map, active_object_count_wider);

m_env->m_added_objects = 0;