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|
use anyhow::Result;
use arrayvec::ArrayVec;
use libtw2_event_loop::{
Addr, Application, Chunk, ConnlessChunk, Loop, PeerId, SocketLoop, Timeout,
};
use libtw2_gamenet_ddnet::{
enums::{Team, VERSION},
msg::{
self, Game, System, SystemOrGame,
game::{ClSetTeam, ClStartInfo},
system::{EnterGame, Info, MapChange, Ready, RequestMapData},
},
snap_obj::obj_size,
};
use libtw2_packer::{IntUnpacker, Unpacker, with_packer};
use libtw2_snapshot::Manager as SnapManager;
use log::{debug, info, warn};
use std::{
fmt::Debug,
fs::File,
io::Write,
net::{IpAddr, Ipv4Addr},
path::PathBuf,
sync::mpsc::{Receiver, Sender, channel},
thread::spawn,
};
use twsnap::{Snap, SnapObj};
pub struct Client {
pub incoming: Receiver<(i32, Snap)>,
}
impl Client {
pub fn new() -> Result<Self> {
let (incoming_tx, incoming_rx) = channel();
spawn(move || {
let mut sloop = SocketLoop::client();
sloop.connect(Addr {
ip: IpAddr::V4(Ipv4Addr::LOCALHOST),
port: 8303,
});
sloop.run(ClientNetwork {
state: NetworkState::New,
events: incoming_tx,
});
});
Ok(Self {
incoming: incoming_rx,
})
}
}
pub struct ClientNetwork {
state: NetworkState,
events: Sender<(i32, Snap)>,
}
enum NetworkState {
New,
Downloading {
chunk: i32,
data: Vec<u8>,
path: PathBuf,
size: usize,
},
Ready,
Ingame {
snap_manager: SnapManager,
snap: twsnap::Snap,
},
}
impl<L: Loop> Application<L> for ClientNetwork {
fn needs_tick(&mut self) -> Timeout {
Timeout::inactive()
}
fn on_tick(&mut self, _loop_: &mut L) {}
fn on_packet(&mut self, loop_: &mut L, chunk: Chunk) {
let pid = chunk.pid;
let msg;
match msg::decode(&mut Warn(chunk.data), &mut Unpacker::new(chunk.data)) {
Ok(m) => msg = m,
Err(err) => {
warn!("decode error {:?}:", err);
return;
}
}
debug!("<- {msg:?}");
match msg {
SystemOrGame::System(System::MapChange(MapChange { name, crc, size })) => {
let path = map_cache_path(name, crc);
if path.exists() {
loop_.sends(pid, Ready);
self.state = NetworkState::Ready
} else {
loop_.sends(pid, RequestMapData { chunk: 0 });
self.state = NetworkState::Downloading {
chunk: 0,
data: Vec::new(),
path,
size: size as usize,
}
}
}
SystemOrGame::System(System::MapData(p)) => {
if let NetworkState::Downloading {
chunk,
data,
path,
size,
} = &mut self.state
{
data.extend(p.data);
info!("download {} / {}", data.len(), size);
assert_eq!(*chunk, p.chunk);
*chunk += 1;
if p.last != 0 {
File::create(path).unwrap().write_all(&data).unwrap();
self.state = NetworkState::Ready;
loop_.sends(pid, Ready);
} else {
loop_.sends(pid, RequestMapData { chunk: *chunk });
}
}
}
SystemOrGame::System(System::ConReady(..)) => {
if let NetworkState::Ready = &mut self.state {
loop_.sendg(pid, ClStartInfo {
name: b"testclient",
clan: b"metamuffin",
country: -1,
skin: b"limekittygirl",
use_custom_color: true,
color_body: 0xFF00FFFFu32 as i32,
color_feet: 0x550055FFu32 as i32,
});
self.state = NetworkState::Ingame {
snap: Snap::default(),
snap_manager: SnapManager::new(),
}
}
}
SystemOrGame::System(System::SnapSingle(p)) => {
if let NetworkState::Ingame { snap, snap_manager } = &mut self.state {
if let Some(new_snap) = snap_manager
.snap_single(&mut Warn(&[]), obj_size, p)
.unwrap()
{
let objs = new_snap
.items()
.filter_map(|i| {
let mut ints = IntUnpacker::new(i.data);
match SnapObj::decode_obj(&mut Warn(&[]), i.type_id, &mut ints) {
Ok(ob) => Some((ob, i.id)),
Err(e) => {
warn!("snap object decode error: {e:?} {:?}", i.type_id);
None
}
}
})
.collect::<Vec<_>>();
snap.process_next(objs.iter());
self.events.send((p.tick, snap.clone())).unwrap();
}
}
}
SystemOrGame::Game(Game::SvReadyToEnter(..)) => {
loop_.sends(pid, EnterGame);
loop_.sendg(pid, ClSetTeam { team: Team::Red });
}
_ => {}
}
}
fn on_connless_packet(&mut self, _loop_: &mut L, _chunk: ConnlessChunk) {}
fn on_connect(&mut self, _loop_: &mut L, _pid: PeerId) {
todo!()
}
fn on_ready(&mut self, loop_: &mut L, pid: PeerId) {
loop_.sends(pid, Info {
version: VERSION.as_bytes(),
password: Some(b""),
});
loop_.flush(pid);
}
fn on_disconnect(&mut self, _loop_: &mut L, _pid: PeerId, _remote: bool, _reason: &[u8]) {}
}
// Adapted from from libtw2/downloader/src/main.rs by heinrich5991, MIT-or-Apache-2.0
trait LoopExt: Loop {
fn sends<'a, S: Into<System<'a>> + Debug>(&mut self, pid: PeerId, msg: S) {
debug!("-> System({msg:?})");
fn inner<L: Loop + ?Sized>(msg: System, pid: PeerId, loop_: &mut L) {
let mut buf: ArrayVec<[u8; 2048]> = ArrayVec::new();
with_packer(&mut buf, |p| msg.encode(p).unwrap());
loop_.send(Chunk {
pid,
vital: true,
data: &buf,
})
}
inner(msg.into(), pid, self)
}
fn sendg<'a, G: Into<Game<'a>> + Debug>(&mut self, pid: PeerId, msg: G) {
debug!("-> System({msg:?})");
fn inner<L: Loop + ?Sized>(msg: Game, pid: PeerId, loop_: &mut L) {
let mut buf: ArrayVec<[u8; 2048]> = ArrayVec::new();
with_packer(&mut buf, |p| msg.encode(p).unwrap());
loop_.send(Chunk {
pid,
vital: true,
data: &buf,
})
}
inner(msg.into(), pid, self)
}
}
impl<L: Loop> LoopExt for L {}
struct Warn<'a>(#[allow(unused)] &'a [u8]);
impl<'a, W: Debug> warn::Warn<W> for Warn<'a> {
fn warn(&mut self, w: W) {
warn!("{:?}", w);
}
}
fn map_cache_path(name: &[u8], crc: i32) -> PathBuf {
xdg::BaseDirectories::with_prefix("twclient")
.unwrap()
.create_cache_directory("maps")
.unwrap()
.join(format!(
"{}_{:08x}",
String::from_utf8_lossy(name)
.replace("/", "")
.replace(".", ""),
crc as u32
))
}
|
