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|
pub mod render;
use crate::render::{
composite::image_buffer_blit, models::processed_block_texture, processing::Texture,
};
use chashmap::{CHashMap, ReadGuard, WriteGuard};
use fastanvil::{Block, Chunk, CurrentJavaChunk, Region, RegionFileLoader, RegionLoader};
use image::ImageBuffer;
use log::{debug, info};
use std::{collections::HashMap, fs::File, path::Path};
const SEG_SIZE: isize = 128;
fn main() {
env_logger::builder()
.filter_level(log::LevelFilter::Debug)
.parse_env("LOG")
.init();
let dim = Dimension::new("/home/muffin/containers/games/home/user/server/world/region/");
let solid = |x: isize, y: isize, z: isize| {
dim.block(x, y, z)
.map(|b| match b.name() {
"minecraft:air" | "minecraft:cave_air" => (false, false),
"minecraft:water" => (false, true),
_ => (true, true),
})
.unwrap_or((true, true))
};
let mut textures = HashMap::<String, Texture>::new();
let mut view: Texture =
ImageBuffer::new(16 * (SEG_SIZE + 1) as u32, 16 * (SEG_SIZE + 1) as u32);
let mut visible = Vec::<((isize, isize, isize), (isize, isize, isize))>::new();
for ix in 0..SEG_SIZE {
for iy in 0..(SEG_SIZE * 2) {
for off in 0..=1 {
let mut y = 100;
let mut x = -ix + iy + off;
let mut z = ix + iy;
loop {
let (solid, has_texture) = solid(x, y, z);
if has_texture {
visible.push(((x, y, z), (ix, iy, off)));
}
if solid {
break;
}
y -= 1;
x -= 1;
z -= 1;
}
}
}
}
info!("{} visible blocks", visible.len());
visible.sort_by_cached_key(|((x, y, z), _)| x + y + z);
info!("compositing textures");
for ((x, y, z), (ix, iy, off)) in visible {
let name = match dim.block(x, y, z) {
Some(block) => block.name().to_owned(),
None => "minecraft:debug".to_owned(),
};
let name = &name["minecraft:".len()..];
let texture = textures
.entry(name.to_owned())
.or_insert_with(|| processed_block_texture(name));
let ix = ix * 16 + off * 8;
let iy = iy * 8 + off * 4;
image_buffer_blit(&mut view, texture, (ix as u32, iy as u32));
}
info!("saving png");
view.save(format!("/tmp/a.png")).unwrap();
}
struct Dimension {
loader: RegionFileLoader,
regions: CHashMap<(isize, isize), Option<Region<File>>>,
chunks: CHashMap<(isize, isize), Option<CurrentJavaChunk>>,
}
impl Dimension {
pub fn new(path: &str) -> Self {
let loader = fastanvil::RegionFileLoader::new(Path::new(path).to_path_buf());
Self {
loader,
regions: Default::default(),
chunks: Default::default(),
}
}
pub fn region(
&self,
rx: isize,
rz: isize,
) -> WriteGuard<'_, (isize, isize), Option<Region<File>>> {
if self.regions.contains_key(&(rx, rz)) {
self.regions.get_mut(&(rx, rz)).unwrap()
} else {
info!("loading region {:?}", (rx, rz));
self.regions.insert(
(rx, rz),
self.loader
.region(fastanvil::RCoord(rx), fastanvil::RCoord(rz)),
);
self.region(rx, rz)
}
}
pub fn chunk(
&self,
cx: isize,
cz: isize,
) -> ReadGuard<'_, (isize, isize), Option<CurrentJavaChunk>> {
if self.chunks.contains_key(&(cx, cz)) {
self.chunks.get(&(cx, cz)).unwrap()
} else {
let mut guard = self.region(cx / 32, cz / 32);
let reg = guard.as_mut().unwrap();
debug!("loading chunk {:?}", (cx, cz));
let chunk: Option<CurrentJavaChunk> = reg
.read_chunk(cx.rem_euclid(32) as usize, cz.rem_euclid(32) as usize)
.ok()
.flatten()
.map(|chunk| fastnbt::from_bytes(&chunk).ok())
.flatten();
self.chunks.insert((cx, cz), chunk);
self.chunk(cx, cz)
}
}
pub fn block(&self, x: isize, y: isize, z: isize) -> Option<Block> {
self.chunk(x / 16, z / 16)
.as_ref()?
.block(x.rem_euclid(16) as usize, y, z.rem_euclid(16) as usize)
.map(|e| e.to_owned())
}
}
|
