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use asefile::{AsepriteFile, AsepriteParseError};
use image::{DynamicImage, ImageBuffer, Rgba};
use ron::ser::{to_string_pretty, PrettyConfig};
use serde::{Deserialize, Serialize};
use std::{collections::HashMap, fs::File, path::Path};
use std::{fs, io::Write, path::PathBuf};
use texture_packer::{exporter::ImageExporter, TexturePacker, TexturePackerConfig};
#[derive(Serialize, Deserialize, Debug)]
pub struct AseTextureData {
pub width: u32,
pub height: u32,
pub basename: String,
pub frame: u32,
pub x: u32,
pub y: u32,
}
#[derive(Debug)]
pub struct AsepritePackerConfig<'a> {
pub aseprite_file_names: &'a [&'a str],
pub path: &'a Path,
pub output_image_location: Option<&'a Path>,
pub output_ron_location: Option<&'a Path>,
}
impl<'a> Default for AsepritePackerConfig<'a> {
fn default() -> Self {
AsepritePackerConfig {
aseprite_file_names: &[],
path: Path::new("."),
output_image_location: None,
output_ron_location: None,
}
}
}
struct AseFile {
path: PathBuf,
name: String,
}
pub struct AsepritePacker {
pub image: DynamicImage,
pub packed_texture_data: HashMap<String, AseTextureData>,
}
impl AsepritePacker {
pub fn new(config: AsepritePackerConfig) -> Self {
let texture_packer_config = TexturePackerConfig {
max_width: std::u32::MAX,
max_height: std::u32::MAX,
allow_rotation: false,
texture_outlines: false,
border_padding: 0,
texture_padding: 0,
..Default::default()
};
let mut packer: TexturePacker<ImageBuffer<Rgba<u8>, Vec<u8>>, String> =
TexturePacker::new_skyline(texture_packer_config);
let mut packed_texture_data: HashMap<String, AseTextureData> = HashMap::default();
let AsepritePackerConfig {
aseprite_file_names,
path,
output_image_location,
output_ron_location,
} = config;
let ase_files: Vec<AseFile> = if !aseprite_file_names.is_empty() {
aseprite_file_names
.iter()
.map(|name| {
let resolved_name = format!("{}.aseprite", name);
AseFile {
path: path.clone().join(resolved_name.to_string()),
name: name.to_string(),
}
})
.collect()
} else {
println!("{}", path.display());
let paths = fs::read_dir(path).unwrap();
paths
.map(|p| {
let path_buff = p.unwrap();
let name = path_buff
.path()
.file_stem()
.unwrap()
.to_str()
.unwrap()
.to_string();
AseFile {
path: path_buff.path().as_path().to_owned(),
name,
}
})
.collect()
};
for file in ase_files {
let ase_file = load_ase(file.path.as_path());
match ase_file {
Err(e) => panic!("{}", e),
Ok(ase) => {
for frame_num in 0..ase.num_frames() {
ase.width();
let key: String = if ase.num_frames() > 1 {
format!("{}_{}", file.name.to_string(), frame_num)
} else {
file.name.to_string()
};
let _result = packer.pack_own(key.clone(), ase.frame(frame_num).image());
match _result {
Ok(_) => {}
Err(e) => panic!("Error packing file: {:?}", e),
}
let frame_data = packer.get_frame(&key).expect("Frame not found");
let source = frame_data.frame;
packed_texture_data.insert(
key.clone(),
AseTextureData {
width: source.w,
height: source.h,
x: source.x,
y: source.y,
basename: file.name.to_string(),
frame: frame_num,
},
);
}
}
}
}
let image = ImageExporter::export(&packer).unwrap();
if let Some(output) = output_image_location {
let mut file = std::fs::File::create(output).unwrap();
image.write_to(&mut file, image::ImageFormat::Png).unwrap();
}
if let Some(output) = output_ron_location {
let mut file = std::fs::File::create(output).unwrap();
let str = to_string_pretty(&packed_texture_data, PrettyConfig::default()).unwrap();
let _result = file.write_all(str.as_bytes());
match _result {
Ok(_) => {}
Err(e) => panic!("{}", e),
}
}
let ase_packer = AsepritePacker {
packed_texture_data,
image,
};
ase_packer
}
}
fn load_ase(file_path: &Path) -> Result<AsepriteFile, AsepriteParseError> {
let f = File::open(file_path).unwrap();
AsepriteFile::read(&f)
}
