mirror of
https://github.com/italicsjenga/valence.git
synced 2025-01-11 07:11:30 +11:00
Implement the block change packets
This commit is contained in:
Ryan
parent
09b434f298
commit
69ba704352
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@ -330,6 +330,11 @@ pub fn build() -> anyhow::Result<()> {
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}
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}
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pub(crate) const fn from_raw_unchecked(id: u16) -> Self {
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debug_assert!(Self::from_raw(id).is_some());
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Self(id)
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}
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/// Converts this block state to its underlying raw block state ID.
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///
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/// The original block state can be recovered with [`BlockState::from_raw`].
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@ -337,6 +342,11 @@ pub fn build() -> anyhow::Result<()> {
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self.0
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}
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/// Returns the maximum block state ID.
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pub const fn max_raw() -> u16 {
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#max_block_state
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}
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/// Gets the value of the property with the given name from this block.
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///
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/// If this block does not have the property, then `None` is returned.
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@ -938,7 +938,7 @@ const ENTITIES: &[Class] = &[
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Field {
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name: "global_position",
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typ: Type::OptGlobalPosition,
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}
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},
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],
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},
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Class {
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@ -1232,7 +1232,7 @@ const ENTITIES: &[Class] = &[
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Field {
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name: "tongue_target",
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typ: Type::VarInt(0),
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}
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},
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],
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},
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Class {
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@ -1399,7 +1399,7 @@ const ENTITIES: &[Class] = &[
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Field {
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name: "right_horn",
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typ: Type::Bool(true),
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}
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},
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],
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},
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Class {
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@ -201,7 +201,7 @@ fn terrain_column(
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2.0,
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0.5,
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) * 6.0)
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.floor() as i64;
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.floor() as i64;
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if *in_terrain {
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if *depth > 0 {
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@ -53,12 +53,24 @@ impl From<(i32, i32, i32)> for BlockPos {
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}
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}
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impl From<BlockPos> for (i32, i32, i32) {
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fn from(pos: BlockPos) -> Self {
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(pos.x, pos.y, pos.z)
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}
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}
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impl From<[i32; 3]> for BlockPos {
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fn from([x, y, z]: [i32; 3]) -> Self {
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BlockPos::new(x, y, z)
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}
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}
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impl From<BlockPos> for [i32; 3] {
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fn from(pos: BlockPos) -> Self {
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[pos.x, pos.y, pos.z]
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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294
src/chunk.rs
294
src/chunk.rs
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@ -15,20 +15,21 @@ use crate::packets::play::s2c::{
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};
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use crate::protocol::{Encode, Nbt};
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use crate::var_int::VarInt;
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use crate::{BiomeId, Server, Ticks};
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use crate::var_long::VarLong;
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use crate::{BiomeId, BlockPos, DimensionId, Server, Ticks};
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pub struct Chunks {
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chunks: HashMap<ChunkPos, Chunk>,
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server: Server,
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section_count: u32,
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dimension: DimensionId,
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}
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impl Chunks {
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pub(crate) fn new(server: Server, section_count: u32) -> Self {
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pub(crate) fn new(server: Server, dimension: DimensionId) -> Self {
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Self {
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chunks: HashMap::new(),
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server,
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section_count,
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dimension,
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}
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}
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@ -36,8 +37,8 @@ impl Chunks {
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self.chunks.len()
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}
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pub fn get(&self, pos: ChunkPos) -> Option<&Chunk> {
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self.chunks.get(&pos)
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pub fn get(&self, pos: impl Into<ChunkPos>) -> Option<&Chunk> {
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self.chunks.get(&pos.into())
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}
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pub fn clear(&mut self) {
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@ -51,6 +52,27 @@ impl Chunks {
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pub fn par_iter(&self) -> impl ParallelIterator<Item = (ChunkPos, &Chunk)> + Clone + '_ {
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self.chunks.par_iter().map(|(&pos, chunk)| (pos, chunk))
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}
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pub fn get_block_state(&self, pos: impl Into<BlockPos>) -> Option<BlockState> {
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let pos = pos.into();
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let chunk_pos = ChunkPos::new(pos.x / 16, pos.z / 16);
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let chunk = self.get(chunk_pos)?;
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let min_y = self.server.dimension(self.dimension).min_y;
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let y = pos.y.checked_sub(min_y)?.try_into().ok()?;
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if y < chunk.height() {
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Some(chunk.get_block_state(
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pos.x.rem_euclid(16) as usize,
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y,
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pos.z.rem_euclid(16) as usize,
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))
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} else {
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None
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}
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}
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}
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impl<'a> ChunksMut<'a> {
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@ -59,7 +81,8 @@ impl<'a> ChunksMut<'a> {
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}
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pub fn create(&mut self, pos: impl Into<ChunkPos>) -> bool {
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let chunk = Chunk::new(self.section_count, self.server.current_tick());
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let section_count = (self.server.dimension(self.dimension).height / 16) as u32;
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let chunk = Chunk::new(section_count, self.server.current_tick());
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self.0.chunks.insert(pos.into(), chunk).is_none()
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}
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@ -67,8 +90,8 @@ impl<'a> ChunksMut<'a> {
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self.0.chunks.remove(&pos).is_some()
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}
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pub fn get_mut(&mut self, pos: ChunkPos) -> Option<ChunkMut> {
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self.0.chunks.get_mut(&pos).map(ChunkMut)
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pub fn get_mut(&mut self, pos: impl Into<ChunkPos>) -> Option<ChunkMut> {
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self.0.chunks.get_mut(&pos.into()).map(ChunkMut)
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}
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pub fn iter_mut(&mut self) -> impl FusedIterator<Item = (ChunkPos, ChunkMut)> + '_ {
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@ -84,6 +107,29 @@ impl<'a> ChunksMut<'a> {
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.par_iter_mut()
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.map(|(&pos, chunk)| (pos, ChunkMut(chunk)))
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}
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pub fn set_block_state(&mut self, pos: impl Into<BlockPos>, block: BlockState) -> bool {
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let pos = pos.into();
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let chunk_pos = ChunkPos::new(pos.x / 16, pos.z / 16);
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if let Some(chunk) = self.0.chunks.get_mut(&chunk_pos) {
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let min_y = self.0.server.dimension(self.0.dimension).min_y;
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if let Some(y) = pos.y.checked_sub(min_y).and_then(|y| y.try_into().ok()) {
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if y < chunk.height() {
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ChunkMut(chunk).set_block_state(
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pos.x.rem_euclid(16) as usize,
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y,
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pos.z.rem_euclid(16) as usize,
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block,
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);
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return true;
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}
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}
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}
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false
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}
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}
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pub struct ChunksMut<'a>(&'a mut Chunks);
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@ -101,23 +147,21 @@ pub struct Chunk {
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// TODO block_entities: HashMap<u32, BlockEntity>,
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/// The MOTION_BLOCKING heightmap
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heightmap: Vec<i64>,
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modified: bool,
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created_tick: Ticks,
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}
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impl Chunk {
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pub(crate) fn new(section_count: u32, current_tick: Ticks) -> Self {
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let sect = ChunkSection {
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blocks: [BlockState::default(); 4096],
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blocks: [BlockState::AIR.to_raw(); 4096],
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modified_count: 1, // Must be >0 so the chunk is initialized.
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biomes: [BiomeId::default(); 64],
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compact_data: Vec::new(),
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modified: true,
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};
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let mut chunk = Self {
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sections: vec![sect; section_count as usize].into(),
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heightmap: Vec::new(),
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modified: true,
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created_tick: current_tick,
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};
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@ -135,7 +179,9 @@ impl Chunk {
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pub fn get_block_state(&self, x: usize, y: usize, z: usize) -> BlockState {
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if x < 16 && y < self.height() && z < 16 {
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self.sections[y / 16].blocks[x + z * 16 + y % 16 * 16 * 16]
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BlockState::from_raw_unchecked(
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self.sections[y / 16].blocks[x + z * 16 + y % 16 * 16 * 16] & BLOCK_STATE_MASK,
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)
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} else {
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BlockState::AIR
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}
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@ -178,14 +224,60 @@ impl Chunk {
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}
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}
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/// Gets the unapplied changes to this chunk as a block change packet.
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pub(crate) fn block_change_packet(&self, pos: ChunkPos) -> Option<BlockChangePacket> {
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if !self.modified {
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return None;
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}
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/// Returns unapplied changes to this chunk as block change packets through
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/// the provided closure.
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pub(crate) fn block_change_packets(
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&self,
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pos: ChunkPos,
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min_y: i32,
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mut packet: impl FnMut(BlockChangePacket),
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) {
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for (sect_y, sect) in self.sections.iter().enumerate() {
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if sect.modified_count == 1 {
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let (idx, &block) = sect
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.blocks
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.iter()
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.enumerate()
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.find(|&(_, &b)| b & !BLOCK_STATE_MASK != 0)
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.expect("invalid modified count");
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// TODO
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None
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let global_x = pos.x * 16 + (idx % 16) as i32;
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let global_y = sect_y as i32 * 16 + (idx / (16 * 16)) as i32 + min_y;
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let global_z = pos.z * 16 + (idx / 16 % 16) as i32;
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packet(BlockChangePacket::Single(BlockChange {
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location: BlockPos::new(global_x, global_y, global_z),
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block_id: VarInt((block & BLOCK_STATE_MASK).into()),
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}));
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} else if sect.modified_count > 1 {
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let mut blocks = Vec::new();
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for y in 0..16 {
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for z in 0..16 {
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for x in 0..16 {
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let block =
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sect.blocks[x as usize + z as usize * 16 + y as usize * 16 * 16];
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if block & !BLOCK_STATE_MASK != 0 {
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blocks.push(VarLong(
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((block & BLOCK_STATE_MASK) as i64) << 12
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| (x << 8 | z << 4 | y),
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))
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}
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}
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}
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}
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let chunk_section_position = (pos.x as i64) << 42
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| (pos.z as i64 & 0x3fffff) << 20
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| (sect_y as i64) & 0xfffff;
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packet(BlockChangePacket::Multi(MultiBlockChange {
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chunk_section_position,
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invert_trust_edges: false,
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blocks,
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}));
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}
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}
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}
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}
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@ -201,62 +293,79 @@ impl<'a> Deref for ChunkMut<'a> {
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impl<'a> ChunkMut<'a> {
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pub fn set_block_state(&mut self, x: usize, y: usize, z: usize, block: BlockState) {
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if x < 16 && y < self.height() && z < 16 {
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let sec = &mut self.0.sections[y / 16];
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let idx = x + z * 16 + y % 16 * 16 * 16;
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if block != sec.blocks[idx] {
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sec.blocks[idx] = block;
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// TODO: set the modified bit.
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sec.modified = true;
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self.0.modified = true;
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// TODO: update block entity if b could have block entity data.
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assert!(
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x < 16 && y < self.height() && z < 16,
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"the chunk block coordinates must be within bounds"
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);
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let sect = &mut self.0.sections[y / 16];
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let idx = x + z * 16 + y % 16 * 16 * 16;
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if block.to_raw() != sect.blocks[idx] & BLOCK_STATE_MASK {
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if sect.blocks[idx] & !BLOCK_STATE_MASK == 0 {
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sect.modified_count += 1;
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}
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sect.blocks[idx] = block.to_raw() | !BLOCK_STATE_MASK;
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// TODO: if the block type was modified and the old block type
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// could be a block entity, then the block entity at this
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// position must be cleared.
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}
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}
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pub fn set_biome(&mut self, x: usize, y: usize, z: usize, b: BiomeId) {
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if x < 4 && y < self.height() / 4 && z < 4 {
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self.0.sections[y / 4].biomes[x + z * 4 + y % 4 * 4 * 4] = b;
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}
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assert!(
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x < 4 && y < self.height() / 4 && z < 4,
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"the chunk biome coordinates must be within bounds"
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);
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self.0.sections[y / 4].biomes[x + z * 4 + y % 4 * 4 * 4] = b;
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}
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pub(crate) fn apply_modifications(&mut self) {
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if self.modified {
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self.0.modified = false;
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let mut any_modified = false;
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for sect in self.0.sections.iter_mut() {
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if sect.modified {
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sect.modified = false;
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for sect in self.0.sections.iter_mut() {
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if sect.modified_count > 0 {
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sect.modified_count = 0;
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any_modified = true;
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sect.compact_data.clear();
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sect.compact_data.clear();
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let non_air_block_count = sect.blocks.iter().filter(|&&b| !b.is_air()).count();
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let mut non_air_block_count: i16 = 0;
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(non_air_block_count as i16)
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.encode(&mut sect.compact_data)
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.unwrap();
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encode_paletted_container(
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sect.blocks.iter().map(|b| b.to_raw()),
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4,
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9,
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15,
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&mut sect.compact_data,
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)
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.unwrap();
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// TODO: The direct bits per idx changes depending on the number of biomes in
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// the biome registry.
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encode_paletted_container(
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sect.biomes.iter().map(|b| b.0),
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0,
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4,
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6,
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&mut sect.compact_data,
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)
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.unwrap();
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for b in &mut sect.blocks {
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*b &= BLOCK_STATE_MASK;
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if !BlockState::from_raw_unchecked(*b).is_air() {
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non_air_block_count += 1;
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}
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}
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}
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non_air_block_count.encode(&mut sect.compact_data).unwrap();
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encode_paletted_container(
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sect.blocks.iter().cloned(),
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4,
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9,
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log2_ceil((BlockState::max_raw() + 1) as usize),
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&mut sect.compact_data,
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)
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.unwrap();
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// TODO: The direct bits per idx changes depending on the number of biomes in
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// the biome registry.
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encode_paletted_container(
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sect.biomes.iter().map(|b| b.0),
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0,
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4,
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6,
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&mut sect.compact_data,
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)
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.unwrap();
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}
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}
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if any_modified {
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build_heightmap(&self.0.sections, &mut self.0.heightmap);
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}
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}
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@ -323,14 +432,25 @@ impl Into<[i32; 2]> for ChunkPos {
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/// A 16x16x16 section of blocks, biomes, and light in a chunk.
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#[derive(Clone)]
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struct ChunkSection {
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/// The blocks in this section, stored in x, z, y order.
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blocks: [BlockState; 4096],
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/// The block states in this section, stored in x, z, y order.
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/// The most significant bit is used to indicate if this block has been
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/// modified.
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blocks: [u16; 4096],
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/// The number of modified blocks
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modified_count: u16,
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biomes: [BiomeId; 64],
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compact_data: Vec<u8>,
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/// If the blocks or biomes were modified.
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modified: bool,
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}
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const BLOCK_STATE_MASK: u16 = 0x7fff;
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const _: () = assert!(
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BlockState::max_raw() <= BLOCK_STATE_MASK,
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"There is not enough space in the block state type to store the modified bit. A bit array \
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separate from the block state array should be created to keep track of modified blocks in \
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the chunk section."
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);
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/// Builds the MOTION_BLOCKING heightmap.
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fn build_heightmap(sections: &[ChunkSection], heightmap: &mut Vec<i64>) {
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let height = sections.len() * 16;
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|
|
@ -344,7 +464,10 @@ fn build_heightmap(sections: &[ChunkSection], heightmap: &mut Vec<i64>) {
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|||
for x in 0..16 {
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for z in 0..16 {
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for y in (0..height).rev() {
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let block = sections[y / 16].blocks[x + z * 16 + y % 16 * 16 * 16];
|
||||
let block = BlockState::from_raw_unchecked(
|
||||
sections[y / 16].blocks[x + z * 16 + y % 16 * 16 * 16] & BLOCK_STATE_MASK,
|
||||
);
|
||||
|
||||
// TODO: is_solid || is_fluid heuristic for motion blocking.
|
||||
if !block.is_air() {
|
||||
let column_height = y as u64;
|
||||
|
|
@ -438,3 +561,38 @@ fn encode_paletted_container(
|
|||
fn log2_ceil(n: usize) -> usize {
|
||||
n.next_power_of_two().trailing_zeros() as usize
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
|
||||
#[test]
|
||||
fn set_get() {
|
||||
let mut chunk = Chunk::new(16, 0);
|
||||
let mut chunk = ChunkMut(&mut chunk);
|
||||
|
||||
chunk.set_block_state(1, 2, 3, BlockState::CAKE);
|
||||
assert_eq!(chunk.get_block_state(1, 2, 3), BlockState::CAKE);
|
||||
|
||||
chunk.set_biome(1, 2, 3, BiomeId(7));
|
||||
assert_eq!(chunk.get_biome(1, 2, 3), BiomeId(7));
|
||||
}
|
||||
|
||||
#[test]
|
||||
#[should_panic]
|
||||
fn block_state_oob() {
|
||||
let mut chunk = Chunk::new(16, 0);
|
||||
let mut chunk = ChunkMut(&mut chunk);
|
||||
|
||||
chunk.set_block_state(16, 0, 0, BlockState::CAKE);
|
||||
}
|
||||
|
||||
#[test]
|
||||
#[should_panic]
|
||||
fn biome_oob() {
|
||||
let mut chunk = Chunk::new(16, 0);
|
||||
let mut chunk = ChunkMut(&mut chunk);
|
||||
|
||||
chunk.set_biome(4, 0, 0, BiomeId(0));
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -485,6 +485,8 @@ impl<'a> ClientMut<'a> {
|
|||
}
|
||||
}
|
||||
|
||||
let dimension = server.dimension(meta.dimension());
|
||||
|
||||
// Update existing chunks and unload those outside the view distance. Chunks
|
||||
// that have been overwritten also need to be unloaded.
|
||||
self.0.loaded_chunks.retain(|&pos| {
|
||||
|
|
@ -496,9 +498,9 @@ impl<'a> ClientMut<'a> {
|
|||
if is_chunk_in_view_distance(center, pos, view_dist + cache)
|
||||
&& chunk.created_tick() != current_tick
|
||||
{
|
||||
if let Some(pkt) = chunk.block_change_packet(pos) {
|
||||
send_packet(&mut self.0.send, pkt);
|
||||
}
|
||||
chunk.block_change_packets(pos, dimension.min_y, |pkt| {
|
||||
send_packet(&mut self.0.send, pkt)
|
||||
});
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
|
@ -518,9 +520,7 @@ impl<'a> ClientMut<'a> {
|
|||
if let Some(chunk) = chunks.get(pos) {
|
||||
if self.0.loaded_chunks.insert(pos) {
|
||||
self.send_packet(chunk.chunk_data_packet(pos));
|
||||
if let Some(pkt) = chunk.block_change_packet(pos) {
|
||||
self.send_packet(pkt);
|
||||
}
|
||||
chunk.block_change_packets(pos, dimension.min_y, |pkt| self.send_packet(pkt));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1028,9 +1028,9 @@ pub mod play {
|
|||
|
||||
def_struct! {
|
||||
MultiBlockChange 0x3d {
|
||||
chunk_section_position: u64,
|
||||
chunk_section_position: i64,
|
||||
invert_trust_edges: bool,
|
||||
blocks: Vec<u64>,
|
||||
blocks: Vec<VarLong>,
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -6,7 +6,7 @@ use byteorder::{ReadBytesExt, WriteBytesExt};
|
|||
use crate::protocol::{Decode, Encode};
|
||||
|
||||
#[derive(Clone, Copy, Default, PartialEq, Eq, PartialOrd, Ord, Hash, Debug)]
|
||||
pub struct VarLong(i64);
|
||||
pub struct VarLong(pub(crate) i64);
|
||||
|
||||
impl VarLong {
|
||||
/// The maximum number of bytes a `VarLong` can occupy when read from and
|
||||
|
|
|
|||
|
|
@ -62,10 +62,7 @@ impl<'a> WorldsMut<'a> {
|
|||
clients: Clients::new(),
|
||||
entities: Entities::new(),
|
||||
spatial_index: SpatialIndex::new(),
|
||||
chunks: Chunks::new(
|
||||
self.server.clone(),
|
||||
(self.server.dimension(dim).height / 16) as u32,
|
||||
),
|
||||
chunks: Chunks::new(self.server.clone(), dim),
|
||||
meta: WorldMeta {
|
||||
dimension: dim,
|
||||
is_flat: false,
|
||||
|
|
|
|||
Loading…
Reference in a new issue