1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
use crate::game::protocol::Packet;
use crate::State;
use super::Config;
use anyhow::Result;
use axum::extract;
use axum::extract::connect_info::ConnectInfo;
use axum::extract::ws::Message;
use axum::http::HeaderMap;
use axum::response::Html;
use axum::{
extract::ws::{WebSocket, WebSocketUpgrade},
response::IntoResponse,
routing::get,
Router,
};
use headers::ContentType;
use log::{info, warn};
use std::net::SocketAddr;
use std::str::FromStr;
use std::sync::Arc;
use tokio::spawn;
use tokio::sync::{broadcast, RwLock};
struct SpectateState {
past_events: RwLock<Vec<Packet>>,
events: broadcast::Sender<Packet>,
}
pub async fn spectate_server(config: Config, state: Arc<State>) -> Result<()> {
let sstate = Arc::new(SpectateState {
past_events: Default::default(),
events: broadcast::channel(16).0,
});
spawn(broadcaster(sstate.clone(), state));
let app = Router::new()
.route("/", get(index))
.route("/main.js", get(javascript))
.route("/style.css", get(css))
.route("/events", get(ws_handler))
.with_state(sstate);
let listener = tokio::net::TcpListener::bind(config.bind).await.unwrap();
info!("listening on {}", listener.local_addr()?);
axum::serve(
listener,
app.into_make_service_with_connect_info::<SocketAddr>(),
)
.await?;
Ok(())
}
async fn index() -> Html<&'static str> {
Html(include_str!("index.html"))
}
#[cfg(debug_assertions)]
async fn javascript() -> (HeaderMap, String) {
use headers::HeaderMapExt;
use tokio::fs::read_to_string;
let mut hm = HeaderMap::new();
hm.typed_insert(ContentType::from_str("application/javascript").unwrap());
(
hm,
read_to_string(concat!(env!("OUT_DIR"), "/main.js"))
.await
.unwrap(),
)
}
#[cfg(not(debug_assertions))]
async fn javascript() -> (HeaderMap, &'static str) {
use headers::HeaderMapExt;
let mut hm = HeaderMap::new();
hm.typed_insert(ContentType::from_str("application/javascript").unwrap());
(hm, include_str!(concat!(env!("OUT_DIR"), "/main.js")))
}
#[cfg(debug_assertions)]
async fn css() -> (HeaderMap, String) {
use headers::HeaderMapExt;
use tokio::fs::read_to_string;
let mut hm = HeaderMap::new();
hm.typed_insert(ContentType::from_str("text/css").unwrap());
(
hm,
read_to_string(concat!(
env!("CARGO_MANIFEST_DIR"),
"/src/spectate/style.css"
))
.await
.unwrap(),
)
}
#[cfg(not(debug_assertions))]
async fn css() -> (HeaderMap, &'static str) {
use headers::HeaderMapExt;
let mut hm = HeaderMap::new();
hm.typed_insert(ContentType::from_str("text/css").unwrap());
(
hm,
include_str!(concat!(
env!("CARGO_MANIFEST_DIR"),
"/src/spectate/style.css"
)),
)
}
async fn broadcaster(sstate: Arc<SpectateState>, state: Arc<State>) {
let mut ticks = state.tick.subscribe();
while let Ok(new_game) = ticks.recv().await {
let mut events = Vec::new();
{
let g = state.game.read().await;
events.push(Packet::Tick);
if new_game {
sstate.past_events.write().await.clear();
events.push(Packet::Game {
my_id: 0,
width: g.map.size.x as usize,
height: g.map.size.y as usize,
});
for (player, (_, _, name)) in &g.heads {
events.push(Packet::Player {
id: *player,
name: name.to_owned(),
})
}
}
for (player, (_, pos, _)) in &g.heads {
events.push(Packet::Pos {
id: *player,
x: pos.x,
y: pos.y,
})
}
if !g.dead.is_empty() {
events.push(Packet::Die(g.dead.clone()));
}
}
sstate.past_events.write().await.extend(events.clone());
for ev in events {
let _ = sstate.events.send(ev);
}
}
}
async fn ws_handler(
ws: WebSocketUpgrade,
ConnectInfo(addr): ConnectInfo<SocketAddr>,
extract::State(state): extract::State<Arc<SpectateState>>,
) -> impl IntoResponse {
ws.on_upgrade(move |socket| async move {
if let Err(e) = handle_socket(socket, addr, state).await {
warn!("client error {e}")
}
})
}
async fn handle_socket(
mut socket: WebSocket,
_addr: SocketAddr,
state: Arc<SpectateState>,
) -> anyhow::Result<()> {
let past = state.past_events.read().await.clone();
for p in past {
socket
.send(Message::Text(serde_json::to_string(&p)?))
.await?;
}
let mut live = state.events.subscribe();
while let Ok(p) = live.recv().await {
socket
.send(Message::Text(serde_json::to_string(&p)?))
.await?;
}
Ok(())
}
|
