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world/section: to not use u128 type

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Getting the block index for unaligned blocks can be done just fine with
only u64.
This commit is contained in:
Matthias Schiffer 2023-02-18 10:55:28 +01:00
parent 3ef48783b7
commit decb5c67a6
Signed by: neocturne
GPG key ID: 16EF3F64CB201D9C
1 changed files with 4 additions and 6 deletions
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10
src/world/section.rs
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@ -119,13 +119,11 @@ impl<'a> SectionV1_13<'a> {
let bit_offset = offset * bits;
let (word, bit_shift) = div_rem(bit_offset, 64);
if bit_shift + bits <= 64 {
block_states[word] as u64 >> bit_shift
} else {
let tmp = (block_states[word + 1] as u64 as u128) << 64
| block_states[word] as u64 as u128;
(tmp >> bit_shift) as u64
let mut tmp = (block_states[word] as u64) >> bit_shift;
if bit_shift + bits > 64 {
tmp |= (block_states[word + 1] as u64) << (64 - bit_shift);
}
tmp
};
(shifted & mask) as usize