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Per Stark
20 lines
514 B
Rust
20 lines
514 B
Rust
use sha2::{Digest, Sha256};
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#[derive(Debug)]
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pub(super) struct BuildParams {
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pub include_impossible: bool,
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pub base_seed: u64,
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pub rng_seed: u64,
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}
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#[allow(clippy::indexing_slicing)]
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pub(super) fn mix_seed(dataset_id: &str, seed: u64) -> u64 {
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let mut hasher = Sha256::new();
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hasher.update(dataset_id.as_bytes());
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hasher.update(seed.to_le_bytes());
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let digest = hasher.finalize();
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let mut bytes = [0u8; 8];
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bytes.copy_from_slice(&digest[..8]);
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u64::from_le_bytes(bytes)
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}
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