method
Hash.combine
Hash.combine(...) -> int
Mixes any number of integers into a single 32-bit value. It folds the arguments left to right with the classic hash-combine step (each value is spread with the golden-ratio constant 0x9e3779b9 and stirred into the running seed), so the result depends on every input and on their order — Hash.combine(1, 2, 3) and Hash.combine(3, 2, 1) differ. The whole point is a per-thing deterministic seed: hash a world seed with a chunk's coordinates to drive procedural generation, so the same chunk always regenerates identically. Pair it with the noise and random libraries, which take a seed.
Example
program ChunkSeed {
entry {
let world_seed = 1337
let cx = 4
let cy = -2
let seed = Hash.combine(world_seed, cx, cy) # this chunk's stable seed
print(seed)
print(Hash.combine(world_seed, cx, cy) == seed) # 1 — reproducible
}
}