Fixed config seed #516
Fixed config seed #516
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feather/server/src/main.rs
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| @@ -64,7 +70,11 @@ fn init_world_source(game: &mut Game, config: &Config) { | |||
| // world otherwise. This is a placeholder: | |||
| // we don't have proper world generation yet. | |||
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| let seed = 42; // FIXME: load from the level file | |||
| let seed = config.world.seed.parse().unwrap_or_else(|_| { | |||
| let mut hasher = DefaultHasher::new(); | |||
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Should use the following hash algorithm s[0]*31^(n-1) + s[1]*31^(n-2) + … + s[n-1] which is javas String.hashCode().
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Here's my implementation from #487: https://github.com/Iaiao/feather/blob/210fed57a4f54681c35d9d49956b1ced8f78c8fb/feather/server/src/main.rs#L95-L101
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Here's my implementation from #487: https://github.com/Iaiao/feather/blob/210fed57a4f54681c35d9d49956b1ced8f78c8fb/feather/server/src/main.rs#L95-L101
Wouldn't it be useless for me to continue if you have already implemented this feature in your own fork?
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Maybe add a few tests, to make sure that the code behave as javas String.hashCode().
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Here's my implementation from #487: https://github.com/Iaiao/feather/blob/210fed57a4f54681c35d9d49956b1ced8f78c8fb/feather/server/src/main.rs#L95-L101
Wouldn't it be useless for me to continue if you have already implemented this feature in your own fork?
My implementation doesn't have any tests and won't be merged soon (because it requires all vanilla commands to be implemented), so I think it wouldn't be useless to implement it in a separate pr.
| @@ -364,6 +364,18 @@ impl BiomeGenerator for StaticBiomeGenerator { | |||
| } | |||
| } | |||
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| pub fn seed_from_string(s: &str) -> u64 { | |||
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This should maybe be an i64, such that negative seeds also work as expected?
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Everywhere in feather seeds are defined by u64
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Yes, but it should be parsed as i64 and then cast to u64. I thin that's how vanilla Minecraft works.
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I think it should be i64 everywhere and only be casted when passing it to RNGs, it would be more convenient for feather or plugin developers who expect -104019040 seed to be negative, and for end users that expect /seed (or seed value in logs / crash reports) to be the same as in config.toml.
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I agree with the above comment, @ELginas do you want to make this change or should I merge this? We can then create a new issue to change the seed type from u64 to i64.
TITLE - Replace
Status
Description
Removed hardcoded seed in main.rs and replaced it with seed from config file.
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Checklist
cargo fmt,cargo clippy --all-targets,cargo build --releaseandcargo testand fixed any generated errors!Note: if you locally don't get any errors, but GitHub Actions fails (especially at
clippy) you might want to check your rust toolchain version. You can then feel free to fix these warnings/errors in your PR.