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world/section: perform palette lookups early

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Look up block types for all palette entries once during section
construction, rather than on block_at(), reducing the number of HashMap
lookups by ~1000.
This commit is contained in:
Matthias Schiffer 2023-03-02 00:37:25 +01:00
parent 5c82b80924
commit 04bc3e5d53
Signed by: neocturne
GPG key ID: 16EF3F64CB201D9C
1 changed files with 15 additions and 12 deletions
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27
src/world/section.rs
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@ -67,8 +67,7 @@ impl<'a> BiomesV18<'a> {
#[derive(Debug)]
pub struct SectionV1_13<'a> {
block_states: Option<&'a fastnbt::LongArray>,
palette: &'a Vec<de::BlockStatePaletteEntry>,
block_types: &'a BlockTypes,
palette: Vec<Option<BlockType>>,
bits: u8,
aligned_blocks: bool,
}
@ -97,10 +96,20 @@ impl<'a> SectionV1_13<'a> {
}
}
let palette_types = palette
.iter()
.map(|entry| {
let block_type = block_types.get(&entry.name);
if block_type.is_none() {
eprintln!("Unknown block type: {}", entry.name);
}
block_type
})
.collect();
Ok(Self {
block_states,
palette,
block_types,
palette: palette_types,
bits,
aligned_blocks,
})
@ -139,16 +148,10 @@ impl<'a> SectionV1_13<'a> {
impl<'a> Section for SectionV1_13<'a> {
fn block_at(&self, coords: SectionBlockCoords) -> Result<Option<BlockType>> {
let index = self.palette_index_at(coords);
let entry = self
Ok(*self
.palette
.get(index)
.context("Palette index out of bounds")?;
let block_type = self.block_types.get(&entry.name);
if block_type.is_none() {
eprintln!("Unknown block type: {}", entry.name);
}
Ok(block_type)
.context("Palette index out of bounds")?)
}
}