melee-inject

replace DAT files within v1.02 NTSC GALE01 using rust

introduction

Dispatches from RC: Parsing and Transforming Super Smash Bros. Melee

this is a presentation i gave at The Recurse Center! * (YouTube) Dispatches from RC: Jonathan Strickland, "Parsing and Transforming Super Smash Bros. Melee" * (slides)

usage

this example is using dang3r potemkin inspired animelee falcon: * https://ssbmtextures.com/characters/potemkin-inspired-animelee-falcon/

Cargo.toml:

toml [dependencies] melee_inject = { git = "https://github.com/djanatyn/melee-inject" }

src/main.rs:

``` rust use meleeinject::characters::CaptainFalcon; use meleeinject::replace::{buildiso, rebuildfst, Replacement}; use std::io; use std::path::PathBuf;

const SSBM_ISO: &str = "";

fn main() -> io::Result<()> { let replacements = vec![ // replace potemkin Replacement { target_file: CaptainFalcon::PlCaGr, replacement: PathBuf::from(""), }, ];

let updates = rebuild_fst(SSBM_ISO, &replacements);
std::fs::write("modified-fst.bin", &updates.new_fst)?;

let rebuilt_iso = build_iso(SSBM_ISO, &updates);
std::fs::write("modified-melee.iso", rebuilt_iso)?;

Ok(())

} ```

cargo run:

[src/main.rs:226] matching.original_size - new_data_length as u32 = 123584 ... UpdateFST [offset 0x4f5b0000 -> 0x4f5b0000] [size 0x805cb -> 0x805cb] PlCaBu.dat UpdateFST [offset 0x4f638000 -> 0x4f638000] [size 0x805ab -> 0x622eb] PlCaGr.dat UpdateFST [offset 0x4f6c0000 -> 0x4f6a1d40] [size 0x8058b -> 0x8058b] PlCaGy.dat ...

❯ radiff2 ssbm-segment.fst potemkin-segment.fst 0x00000021 0805ab => 0622eb 0x00000021 0x00000029 6c0000 => 6a1d40 0x00000029

after that, you should be able to load the rebuilt ISO in dolphin!