225 lines
7.5 KiB
Rust
225 lines
7.5 KiB
Rust
|
|
use std::thread;
|
|
use std::sync::mpsc;
|
|
use std::sync::{Arc, RwLock};
|
|
use std::io::Write;
|
|
use byteorder::{WriteBytesExt, NativeEndian};
|
|
use world;
|
|
use render;
|
|
|
|
const NUM_WORKERS: usize = 4;
|
|
|
|
pub struct ChunkBuilder {
|
|
threads: Vec<(mpsc::Sender<BuildReq>, thread::JoinHandle<()>)>,
|
|
free_builders: Vec<usize>,
|
|
built_recv: mpsc::Receiver<(usize, BuildReply)>,
|
|
}
|
|
|
|
impl ChunkBuilder {
|
|
pub fn new(textures: Arc<RwLock<render::TextureManager>>) -> ChunkBuilder {
|
|
let mut threads = vec![];
|
|
let mut free = vec![];
|
|
let (built_send, built_recv) = mpsc::channel();
|
|
for i in 0 .. NUM_WORKERS {
|
|
let built_send = built_send.clone();
|
|
let (work_send, work_recv) = mpsc::channel();
|
|
let textures = textures.clone();
|
|
let id = i;
|
|
threads.push((work_send, thread::spawn(move || build_func(id, textures, work_recv, built_send))));
|
|
free.push(i);
|
|
}
|
|
ChunkBuilder {
|
|
threads: threads,
|
|
free_builders: free,
|
|
built_recv: built_recv,
|
|
}
|
|
}
|
|
|
|
pub fn tick(&mut self, world: &mut world::World, renderer: &mut render::Renderer) {
|
|
while let Ok((id, val)) = self.built_recv.try_recv() {
|
|
world.reset_building_flag(val.position);
|
|
|
|
renderer.update_chunk_solid(val.position, &val.solid_buffer, val.solid_count);
|
|
|
|
self.free_builders.push(id);
|
|
}
|
|
if self.free_builders.is_empty() {
|
|
return;
|
|
}
|
|
while let Some((x, y, z)) = world.next_dirty_chunk_section() {
|
|
let t_id = self.free_builders.pop().unwrap();
|
|
let (cx, cy, cz) = (x << 4, y << 4, z << 4);
|
|
let mut snapshot = world.capture_snapshot(cx - 2, cy - 2, cz - 2, 20, 20, 20);
|
|
snapshot.make_relative(-2, -2, -2);
|
|
self.threads[t_id].0.send(BuildReq {
|
|
snapshot: snapshot,
|
|
position: (x, y, z),
|
|
}).unwrap();
|
|
if self.free_builders.is_empty() {
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
struct BuildReq {
|
|
snapshot: world::Snapshot,
|
|
position: (i32, i32, i32),
|
|
}
|
|
|
|
struct BuildReply {
|
|
position: (i32, i32, i32),
|
|
solid_buffer: Vec<u8>,
|
|
solid_count: usize,
|
|
}
|
|
|
|
fn build_func(id: usize, textures: Arc<RwLock<render::TextureManager>>, work_recv: mpsc::Receiver<BuildReq>, built_send: mpsc::Sender<(usize, BuildReply)>) {
|
|
use rand::{self, Rng};
|
|
loop {
|
|
let BuildReq {
|
|
snapshot,
|
|
position,
|
|
} = work_recv.recv().unwrap();
|
|
|
|
let mut solid_buffer = vec![];
|
|
let mut solid_count = 0;
|
|
|
|
let mut rng = rand::thread_rng();
|
|
|
|
for y in 0 .. 16 {
|
|
for x in 0 .. 16 {
|
|
for z in 0 .. 16 {
|
|
let block = snapshot.get_block(x, y, z);
|
|
if !block.render {
|
|
continue;
|
|
}
|
|
|
|
for verts in &PRECOMPUTED_VERTS {
|
|
let stone = render::Renderer::get_texture(&textures, rng.choose(&[
|
|
"minecraft:blocks/lava_flow",
|
|
"minecraft:blocks/stone",
|
|
"minecraft:blocks/melon_side",
|
|
"minecraft:blocks/sand",
|
|
]).unwrap());
|
|
solid_count += 6;
|
|
for vert in verts {
|
|
let mut vert = vert.clone();
|
|
// TODO
|
|
vert.r = 255;
|
|
vert.g = 255;
|
|
vert.b = 255;
|
|
|
|
vert.x += x as f32;
|
|
vert.y += y as f32;
|
|
vert.z += z as f32;
|
|
|
|
vert.toffsetx *= stone.get_width() as i16 * 16;
|
|
vert.toffsety *= stone.get_height() as i16 * 16;
|
|
|
|
// TODO
|
|
vert.block_light = 15 * 4000;
|
|
vert.sky_light = 15 * 4000;
|
|
|
|
// TODO
|
|
vert.tatlas = stone.atlas as i16;
|
|
vert.tx = stone.get_x() as u16;
|
|
vert.ty = stone.get_y() as u16;
|
|
vert.tw = stone.get_width() as u16;
|
|
vert.th = stone.get_height() as u16;
|
|
|
|
vert.write(&mut solid_buffer);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
built_send.send((id, BuildReply {
|
|
position: position,
|
|
solid_buffer: solid_buffer,
|
|
solid_count: solid_count,
|
|
})).unwrap();
|
|
}
|
|
}
|
|
|
|
const PRECOMPUTED_VERTS: [[BlockVertex; 4]; 6] = [
|
|
[ // Up
|
|
BlockVertex::base(0.0, 1.0, 0.0, 0, 0),
|
|
BlockVertex::base(1.0, 1.0, 0.0, 1, 0),
|
|
BlockVertex::base(0.0, 1.0, 1.0, 0, 1),
|
|
BlockVertex::base(1.0, 1.0, 1.0, 1, 1),
|
|
],
|
|
[ // Down
|
|
BlockVertex::base(0.0, 0.0, 0.0, 0, 1),
|
|
BlockVertex::base(0.0, 0.0, 1.0, 0, 0),
|
|
BlockVertex::base(1.0, 0.0, 0.0, 1, 1),
|
|
BlockVertex::base(1.0, 0.0, 1.0, 1, 0),
|
|
],
|
|
[ // North
|
|
BlockVertex::base(0.0, 0.0, 0.0, 1, 1),
|
|
BlockVertex::base(1.0, 0.0, 0.0, 0, 1),
|
|
BlockVertex::base(0.0, 1.0, 0.0, 1, 0),
|
|
BlockVertex::base(1.0, 1.0, 0.0, 0, 0),
|
|
],
|
|
[ // South
|
|
BlockVertex::base(0.0, 0.0, 1.0, 0, 1),
|
|
BlockVertex::base(0.0, 1.0, 1.0, 0, 0),
|
|
BlockVertex::base(1.0, 0.0, 1.0, 1, 1),
|
|
BlockVertex::base(1.0, 1.0, 1.0, 1, 0),
|
|
],
|
|
[ // West
|
|
BlockVertex::base(0.0, 0.0, 0.0, 0, 1),
|
|
BlockVertex::base(0.0, 1.0, 0.0, 0, 0),
|
|
BlockVertex::base(0.0, 0.0, 1.0, 1, 1),
|
|
BlockVertex::base(0.0, 1.0, 1.0, 1, 0),
|
|
],
|
|
[ // East
|
|
BlockVertex::base(1.0, 0.0, 0.0, 1, 1),
|
|
BlockVertex::base(1.0, 0.0, 1.0, 0, 1),
|
|
BlockVertex::base(1.0, 1.0, 0.0, 1, 0),
|
|
BlockVertex::base(1.0, 1.0, 1.0, 0, 0),
|
|
],
|
|
];
|
|
|
|
#[derive(Clone)]
|
|
pub struct BlockVertex {
|
|
x: f32, y: f32, z: f32,
|
|
tx: u16, ty: u16, tw: u16, th: u16,
|
|
toffsetx: i16, toffsety: i16, tatlas: i16,
|
|
r: u8, g: u8, b: u8,
|
|
block_light: u16, sky_light: u16,
|
|
}
|
|
|
|
impl BlockVertex {
|
|
const fn base(x: f32, y: f32, z: f32, tx: i16, ty: i16) -> BlockVertex {
|
|
BlockVertex {
|
|
x: x, y: y, z: z,
|
|
tx: 0, ty: 0, tw: 0, th: 0,
|
|
toffsetx: tx, toffsety: ty, tatlas: 0,
|
|
r: 0, g: 0, b: 0,
|
|
block_light: 0, sky_light: 0,
|
|
}
|
|
}
|
|
fn write<W: Write>(&self, w: &mut W) {
|
|
let _ = w.write_f32::<NativeEndian>(self.x);
|
|
let _ = w.write_f32::<NativeEndian>(self.y);
|
|
let _ = w.write_f32::<NativeEndian>(self.z);
|
|
let _ = w.write_u16::<NativeEndian>(self.tx);
|
|
let _ = w.write_u16::<NativeEndian>(self.ty);
|
|
let _ = w.write_u16::<NativeEndian>(self.tw);
|
|
let _ = w.write_u16::<NativeEndian>(self.th);
|
|
let _ = w.write_i16::<NativeEndian>(self.toffsetx);
|
|
let _ = w.write_i16::<NativeEndian>(self.toffsety);
|
|
let _ = w.write_i16::<NativeEndian>(self.tatlas);
|
|
let _ = w.write_i16::<NativeEndian>(0);
|
|
let _ = w.write_u8(self.r);
|
|
let _ = w.write_u8(self.g);
|
|
let _ = w.write_u8(self.b);
|
|
let _ = w.write_u8(255);
|
|
let _ = w.write_u16::<NativeEndian>(self.block_light);
|
|
let _ = w.write_u16::<NativeEndian>(self.sky_light);
|
|
let _ = w.write_u16::<NativeEndian>(0);
|
|
let _ = w.write_u16::<NativeEndian>(0);
|
|
}
|
|
}
|