/*
* Calls load_grid around () {x: 0, z: 0}, and attempts to find a suitable
* spawn position.
*/
void
world::prepare_spawn (int diameter, bool calc_spawn_point)
{
this->load_grid (chunk_pos (this->spawn_pos), diameter);
if (calc_spawn_point)
{
block_pos best {0, 0, 0};
int cx, cz, x, z;
short h;
for (cx = 0; cx <= 2; ++cx)
for (cz = 0; cz <= 2; ++cz)
{
chunk *ch = this->load_chunk (cx, cz);
for (x = 0; x < 16; ++x)
for (z = 0; z < 16; ++z)
{
h = ch->get_height (x, z);
if (ch->get_id (x, h - 1, z) != 0 && ((h + 1) > best.y))
best.set ((cx * 16) + x, h + 1, (cz * 16) + z);
}
}
this->spawn_pos = best;
}
}
Block WorldCache::getBlock(const mc::BlockPos& pos, const mc::Chunk* chunk, int get) {
// this can happen when we check for the bottom block shadow edges
if (pos.y < 0)
return Block();
mc::ChunkPos chunk_pos(pos);
const mc::Chunk* mychunk = chunk;
if (chunk == nullptr || chunk_pos != chunk->getPos())
mychunk = getChunk(chunk_pos);
// chunk may be nullptr
if (mychunk == nullptr) {
return Block();
// otherwise get all required block data
} else {
mc::LocalBlockPos local(pos);
Block block;
if (get & GET_ID)
block.id = mychunk->getBlockID(local);
if (get & GET_DATA)
block.data = mychunk->getBlockData(local);
if (get & GET_BIOME)
block.biome = mychunk->getBiomeAt(local);
if (get & GET_BLOCK_LIGHT)
block.block_light = mychunk->getBlockLight(local);
if (get & GET_SKY_LIGHT)
block.sky_light = mychunk->getSkyLight(local);
return block;
}
}
Biome TileRenderer::getBiomeOfBlock(const mc::BlockPos& pos, const mc::Chunk* chunk) {
// return default biome if we don't want to render different biomes
if (!render_biomes)
return getBiome(DEFAULT_BIOME);
uint8_t biome_id = chunk->getBiomeAt(mc::LocalBlockPos(pos));
Biome biome = getBiome(biome_id);
int count = 1;
// get average biome data to make smooth edges between
// different biomes
for (int dx = -1; dx <= 1; dx++)
for (int dz = -1; dz <= 1; dz++) {
if (dx == 0 && dz == 0)
continue;
mc::BlockPos other = pos + mc::BlockPos(dx, dz, 0);
mc::ChunkPos chunk_pos(other);
uint8_t other_id = chunk->getBiomeAt(mc::LocalBlockPos(other));
if (chunk_pos != chunk->getPos()) {
mc::Chunk* other_chunk = state.world->getChunk(chunk_pos);
if (other_chunk == nullptr)
continue;
other_id = other_chunk->getBiomeAt(mc::LocalBlockPos(other));
}
biome += getBiome(other_id);
count++;
}
biome /= count;
return biome;
}
