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
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="icon" href="data:,">
<title>{{ TITLE }}</title>
<style>
body,
html {
margin: 0;
padding: 0;
width: 100vw;
height: 100%;
}
canvas {
display: block;
touch-action: none;
}
canvas:focus {
outline: none;
}
</style>
</head>
<body>
{{ NO_MODULE }}
<script type="module">
// {{ MODULE }}
async function run() {
await wasm_bindgen({module_or_path: "/api/wasm.wasm"}).catch(error => {
if (!error.message.startsWith("Using exceptions for control flow, don't mind me. This isn't actually an error!")) {
throw error;
}
});
}
const reloadInterval = 1000;
async function startReloadInterval() {
const fetchVersion = () => fetch("/api/version").then(response => response.text());
const version = await fetchVersion();
let intervalToken;
function reloadIfChanged() {
fetchVersion()
.then(newVersion => {
if (version != newVersion) {
window.location.reload();
}
})
.catch(_ => { });
}
intervalToken = setInterval(reloadIfChanged, reloadInterval);
}
let queuedMessages = [];
let websocket = new WebSocket(((window.location.protocol === "https:") ? "wss://" : "ws://") + window.location.host + "/ws");
function formatValue(value) {
return String(value); // TODO
}
function formatMessage(args) {
// https://github.com/denoland/deno/blob/32025dca5ca76695d463383372cd5f88687e2e9d/ext/console/01_console.js#L3091
let first = args[0];
let a = 0;
let string = "";
if (typeof first === "string" && args.length > 1) {
a++;
let appendedChars = 0;
for (let i = 0; i < first.length; i++) {
if (first[i] == '%') {
let char = first[++i];
if (a < args.length) {
let formattedArg = null;
if (char === 's') {
formattedArg = String(args[a++]);
} else if (char === 'd' || char === 'i') {
let value = args[a++];
if (typeof value === "bigint") {
formattedArg = `${value}n`;
} else if (typeof value === "number") {
formattedArg = String(parseInt(String(value)));
} else {
formattedArg = "NaN";
}
formattedArg = `${value}n`;
} else if (char === 'f') {
let value = args[a++];
if (typeof value == "number") {
formattedArg = `${value}`;
} else {
formattedArg = "NaN";
}
} else if (char === 'o' || char === 'O') {
formattedArg = formatValue(args[a++]);
}
else if (char === 'c') {
let value = args[a++];
formattedArg = ""; // TODO css
}
if (formattedArg != null) {
string += first.slice(appendedChars, i - 1) + formattedArg;
appendedChars = i + 1;
}
}
if (char === '%') {
string += first.slice(appendedChars, i - 1) + '%';
appendedChars = i + 1;
}
}
}
string += first.slice(appendedChars);
}
for (; a < args.length; a++) {
if (a > 0) string += " ";
if (typeof args[a] === "string") {
string += args[a];
} else {
string += formatValue(args[a]);
}
}
return string;
}
function sendLogMessage([level, args]) {
let msg = formatMessage(args);
websocket.send(level + "," + msg);
}
websocket.onerror = console.error;
websocket.onopen = () => {
for (const args of queuedMessages) sendLogMessage(args);
queuedMessages = [];
};
let logMethods = ["trace", "debug", "info", "warn", "error", "log"];
for (const logMethod of logMethods) {
let stdlog = console[logMethod].bind(console);
console[logMethod] = function (...args) {
stdlog(...args);
let item = [logMethod, args];
if (websocket.readyState === 1) {
sendLogMessage(item);
} else {
queuedMessages.push(item);
}
};
}
run();
startReloadInterval();
</script>
<script>
document.body.addEventListener("contextmenu", (e) => {
e.preventDefault();
e.stopPropagation();
});
// Insert hack to make sound autoplay on Chrome as soon as the user interacts with the tab:
// https://developers.google.com/web/updates/2018/11/web-audio-autoplay#moving-forward
// the following function keeps track of all AudioContexts and resumes them on the first user
// interaction with the page. If the function is called and all contexts are already running,
// it will remove itself from all event listeners.
(function () {
// An array of all contexts to resume on the page
const audioContextList = [];
// An array of various user interaction events we should listen for
const userInputEventNames = [
"click",
"contextmenu",
"auxclick",
"dblclick",
"mousedown",
"mouseup",
"pointerup",
"touchend",
"keydown",
"keyup",
];
// A proxy object to intercept AudioContexts and
// add them to the array for tracking and resuming later
self.AudioContext = new Proxy(self.AudioContext, {
construct(target, args) {
const result = new target(...args);
audioContextList.push(result);
return result;
},
});
// To resume all AudioContexts being tracked
function resumeAllContexts(_event) {
let count = 0;
audioContextList.forEach((context) => {
if (context.state !== "running") {
context.resume();
} else {
count++;
}
});
// If all the AudioContexts have now resumed then we unbind all
// the event listeners from the page to prevent unnecessary resume attempts
// Checking count > 0 ensures that the user interaction happens AFTER the game started up
if (count > 0 && count === audioContextList.length) {
userInputEventNames.forEach((eventName) => {
document.removeEventListener(eventName, resumeAllContexts);
});
}
}
// We bind the resume function for each user interaction
// event on the page
userInputEventNames.forEach((eventName) => {
document.addEventListener(eventName, resumeAllContexts);
});
})();
</script>
</body>
</html>