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|
pub mod render;
use crate::render::{
composite::{image_buffer_blit, isometric_coord_mapping, CHUNK_HEIGHT},
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;
use std::{collections::HashMap, fs::File, path::Path};
const SEG_SIZE: isize = 64;
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/");
dim.block(123, 123, 123);
let mut visible_blocks = Vec::new();
for x in 0..SEG_SIZE {
for y in -64..256 {
for z in 0..SEG_SIZE {
let solid = |x: isize, y: isize, z: isize| {
if x >= 0 && z >= 0 && x < SEG_SIZE && z < SEG_SIZE && y >= -64 && y < 256 {
dim.block(x, y, z)
.map(|b| {
!matches!(
b.name(),
"minecraft:air" | "minecraft:water" | "minecraft:cave_air"
)
})
.unwrap_or(false)
} else {
false
}
};
let visible =
|b: &Block| !matches!(b.name(), "minecraft:air" | "minecraft:cave_air");
if visible(&dim.block(x, y, z).unwrap())
&& !(solid(x + 1, y, z)
&& solid(x - 1, y, z)
&& solid(x, y + 1, z)
&& solid(x, y - 1, z)
&& solid(x, y, z + 1)
&& solid(x, y, z - 1))
{
visible_blocks.push((x, y, z))
}
}
}
}
debug!("{} potentially visible blocks", visible_blocks.len());
debug!("sorting by z-order");
visible_blocks.sort_by_cached_key(|(x, y, z)| x + y + z);
debug!("done");
let mut view: Texture = ImageBuffer::new(
16 * SEG_SIZE as u32,
16 * (SEG_SIZE as u32 + CHUNK_HEIGHT as u32) / 2,
);
let mut textures = HashMap::<String, Texture>::new();
for (x, y, z) in visible_blocks {
let coords = isometric_coord_mapping(x as i32, y as i32, z as i32);
let block = dim.block(x, y, z).unwrap();
let name = &block.name()["minecraft:".len()..];
let texture = textures
.entry(name.to_owned())
.or_insert_with(|| processed_block_texture(name));
image_buffer_blit(&mut view, texture, coords);
}
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 {
debug!("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();
let chunk = reg
.read_chunk(cx.rem_euclid(32) as usize, cz.rem_euclid(32) as usize)
.ok()
.unwrap()
.unwrap();
debug!("loading chunk {:?}", (cx, cz));
let chunk: Option<CurrentJavaChunk> = fastnbt::from_bytes(&chunk).ok();
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())
}
}
|
