async def fetch_chunk(self, chunk_x: int, chunk_z: int) -> Chunk:
key = (chunk_x, chunk_z)
try: # try to fetch chunk from cache
return self._chunk_cache[key]
except KeyError:
pass
try: # try to fetch from disk
return self.cache_chunk(
await self.server.chunkio.fetch_chunk_async(self.path, *key),
key)
except FileNotFoundError: # fall back to generate chunk
sections = self.server.generator.generate_chunk(
self.data["RandomSeed"], self.dimension, chunk_x, chunk_z)
chunk = Chunk.new(chunk_x, chunk_z, sections, int(time.time()))
return self.cache_chunk(chunk)
def generate_chunk(seed: int, dimension: str, chunk_x: int,
chunk_z: int) -> Chunk:
chunk = Chunk.new(chunk_x, chunk_z, int(time.time()))
chunk.sections[0] = ChunkSection.new(0, DirectPalette)
palette = chunk.sections[0].palette
if dimension == "minecraft:overworld":
chunk.sections[0].block_states[0] = palette.encode(
"minecraft:bedrock")
chunk.sections[0].block_states[1:3] = palette.encode(
"minecraft:dirt")
chunk.sections[0].block_states[3] = palette.encode(
"minecraft:grass_block", {"snowy": "false"})
chunk.sections[0].block_light[0:4] = 0
chunk.sections[0].sky_light[0:3] = 0
chunk.sections[0].sky_light[3:] = 15
elif dimension == "minecraft:nether":
chunk.sections[0].block_states[0] = palette.encode(
"minecraft:bedrock")
chunk.sections[0].block_states[1:4] = palette.encode(
"minecraft:netherrack")
chunk.sections[0].block_light[0:4] = 0
chunk.sections[0].sky_light[4:] = 7
elif dimension == "minecraft:the_end":
chunk.sections[0].block_states[0:4] = palette.encode(
"minecraft:end_stone")
chunk.sections[0].block_light[0:4] = 0
chunk.sections[0].sky_light[4:] = 0
else:
raise ValueError(f"Unsupported dimension: {dimension}")
return chunk