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Improved some comments.

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Acrimon 2019-08-05 21:18:00 +02:00
parent 5eee2622cb
commit d840ca72e3
1 changed files with 3 additions and 2 deletions
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5
world/src/util/seed_expan.rs
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@ -1,7 +1,8 @@
// This module contains a few functions and utilities for expanding a seed into more data for use in worldgen.
// Very standard substitution box. Takes one number and gives back another. This one works per byte.
// Standard component in diffusion functions.
// Standard component in diffusion functions. The numbers here are totally random and could be whatever.
// Onlu rule is each index has to match an unique number.
static SBOX: [u8; 256] = [
206, 21, 212, 69, 54, 234, 13, 42, 184, 48, 92, 64, 196, 55, 225, 235, 229, 120, 135, 72, 32,
147, 74, 142, 197, 79, 139, 164, 110, 57, 176, 47, 192, 174, 178, 49, 193, 71, 78, 18, 237, 81,
@ -83,7 +84,7 @@ pub fn expand_seed_to_rng(seed: u32) -> [u8; 32] {
// Create a new empty internal state.
let mut state: u64 = initial_expand(seed);
// Fill the ChaChaRng state with random bits from repeatedly running mixing the state.
// Fill the ChaChaRng state with random bits from repeatedly mixing the state.
for i in 0..4 {
state = diffuse(state);
r[i] = state;