CachedMapBlockData* MeshUpdateQueue::cacheBlock(Map *map, v3s16 p, UpdateMode mode,
size_t *cache_hit_counter)
{
std::map<v3s16, CachedMapBlockData*>::iterator it =
m_cache.find(p);
if (it != m_cache.end()) {
// Already in cache
CachedMapBlockData *cached_block = it->second;
if (mode == SKIP_UPDATE_IF_ALREADY_CACHED) {
if (cache_hit_counter)
(*cache_hit_counter)++;
return cached_block;
}
MapBlock *b = map->getBlockNoCreateNoEx(p);
if (b) {
if (cached_block->data == NULL)
cached_block->data =
new MapNode[MAP_BLOCKSIZE * MAP_BLOCKSIZE * MAP_BLOCKSIZE];
memcpy(cached_block->data, b->getData(),
MAP_BLOCKSIZE * MAP_BLOCKSIZE * MAP_BLOCKSIZE * sizeof(MapNode));
} else {
delete[] cached_block->data;
cached_block->data = NULL;
}
return cached_block;
}
// Not yet in cache
CachedMapBlockData *cached_block = new CachedMapBlockData();
m_cache[p] = cached_block;
MapBlock *b = map->getBlockNoCreateNoEx(p);
if (b) {
cached_block->data =
new MapNode[MAP_BLOCKSIZE * MAP_BLOCKSIZE * MAP_BLOCKSIZE];
memcpy(cached_block->data, b->getData(),
MAP_BLOCKSIZE * MAP_BLOCKSIZE * MAP_BLOCKSIZE * sizeof(MapNode));
}
return cached_block;
}
void MeshMakeData::fill(MapBlock *block)
{
fillBlockDataBegin(block->getPos());
fillBlockData(v3s16(0,0,0), block->getData());
// Get map for reading neigbhor blocks
Map *map = block->getParent();
for (u16 i=0; i<26; i++) {
const v3s16 &dir = g_26dirs[i];
v3s16 bp = m_blockpos + dir;
MapBlock *b = map->getBlockNoCreateNoEx(bp);
if(b)
fillBlockData(dir, b->getData());
}
}
