34 releases
0.8.2 | Oct 25, 2022 |
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0.7.1 | Jul 8, 2022 |
0.6.1 | Mar 20, 2022 |
0.5.3 | Jul 4, 2021 |
0.3.3 | Nov 10, 2020 |
#894 in Game dev
73 downloads per month
190KB
5K
SLoC
EU4 Save
EU4 Save is a library to ergonomically work with EU4 saves (ironman + mp).
use eu4save::{Eu4Extractor, Encoding, CountryTag};
use std::io::Cursor;
let data = std::fs::read("assets/saves/eng.txt.compressed.eu4")?;
let (save, encoding) = Eu4Extractor::extract_save(Cursor::new(&data[..]))?;
assert_eq!(encoding, Encoding::TextZip);
assert_eq!(save.meta.player, CountryTag::from("ENG"));
Eu4Extractor
will deserialize both plaintext (used for mods, multiplayer,
non-ironman saves) and binary (ironman) encoded saves into the same structure.
Querying
Even once decoded, the data might be too low level. For example a country can have an income ledger that looks like:
income = { 1.000 0 2.000 0.000 1.500 }
While the structure will decoded successfully into a vector, the context of what each index means is missing. What value represents the income from trade?
To help solve questions like these, the Query
API was created
use eu4save::{Eu4Extractor, Encoding, CountryTag, query::Query};
use std::io::Cursor;
let data = std::fs::read("assets/saves/eng.txt.compressed.eu4")?;
let (save, _encoding) = Eu4Extractor::extract_save(Cursor::new(&data[..]))?;
let save_query = Query::from_save(save);
let trade = save_query.save().game.countries.get(&CountryTag::from("ENG"))
.map(|country| save_query.country_income_breakdown(country))
.map(|income| income.trade);
assert_eq!(Some(17.982), trade);
Ironman
By default, ironman saves will not be decoded properly.
To enable support, one must supply an environment variable
(EU4_IRONMAN_TOKENS
) that points to a newline delimited
text file of token descriptions. For instance:
0xffff my_test_token
0xeeee my_test_token2
PDS has declared that in order to comply with EU4's terms of use, the list of tokens must not be shared. I am also restricted from divulging how the list of tokens can be derived.
You may look to other projects EU4 ironman projects like ironmelt or paperman for inspiration.
Dependencies
~1.9–2.8MB
~62K SLoC