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// SPDX-License-Identifier: AGPL-3.0-or-later
// SPDX-FileCopyrightText: Wolfgang Silbermayr <wolfgang@silbermayr.at>
use anyhow::{Error, Result};
use clap::Parser;
use freenukum::tile::{self, TileHeader};
use sdl2::{image::SaveSurface, surface::Surface};
use std::fs::{create_dir_all, File};
use std::path::PathBuf;
/// Convert an original original Duke Nukem 1 tile file to a set of png files.
#[derive(Parser, Debug)]
struct Arguments {
/// The path to the file that should be converted.
/// The file is usually named one of: `anim0.dn1` to `anim5.dn1`,
/// `border.dn1`, `font1.dn1`, `font2.dn1`, `numbers.dn1`,
/// `object0.dn1` to `object2.dn1` or `solid0.dn1` to `solid3.dn1`.
filename: PathBuf,
/// The directory where the extracted tiles should be placed.
/// The tiles are numbered as `tile_00.png` to `tile_50.png`.
/// If the directory doesn't exist, the program will attempt to create it.
destination: PathBuf,
}
fn main() -> Result<()> {
let args = Arguments::parse();
let mut file = File::open(&args.filename)?;
let header = TileHeader::load_from(&mut file)?;
create_dir_all(&args.destination)?;
for i in 0..header.tiles {
let tile: Surface = tile::load(&mut file, header, false)?;
let filename = format!("tile_{:02}.png", i);
tile.save(args.destination.join(filename))
.map_err(Error::msg)?;
}
Ok(())
}