-
Notifications
You must be signed in to change notification settings - Fork 0
/
index.html
258 lines (227 loc) · 7.1 KB
/
index.html
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
246
247
248
249
250
251
252
253
254
255
256
257
258
<!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" />
<title>CHIP-8 Emulator | Powered by <kastor.code/></title>
<link rel="icon" type="image/x-icon" href="public/images/favicon.png" />
<link rel="stylesheet" type="text/css" href="public/css/stylesheet.css" />
<meta name="keywords" content="chip-8, chip8, chip, emulator, web, browser, online, typescript, javascript, ts, js, github, git, hub, kastor.code, kastorcode, kastor, code, matheus, ramalho, oliveira" />
<meta name="description" content="CHIP-8 emulator that runs on a browser developed by kastorcode" />
<meta name="author" content="Matheus Ramalho de Oliveira" />
</head>
<body>
<div id="header">
<span>CHIP-8 EMULATOR</span>
</div>
<div id="canvas">
<div id="file" onDragOver="allowDrop(event)" ondrop="onGetFile(event)">
<input id="input-file" type="file" oninput="onGetFile(event)" />
<label for="input-file">DRAG AND DROP A CH8 FILE</label>
<select id="select-rom" oninput="onGetFile(event)">
<option id="option-rom" disabled selected>SELECT A ROM</option>
</select>
</div>
<canvas onclick="togglePause()"></canvas>
</div>
<div id="buttons">
<div class="box">
<div class="buttons-box">
<button onclick="togglePause()">PAUSE</button>
<button onclick="stop()">STOP</button>
<button onclick="fullscreen()">FULL SCREEN</button>
<select oninput="setTimer(event)">
<option value="HZ15">15HZ</option>
<option value="HZ30">30HZ</option>
<option value="HZ60">60HZ</option>
<option id="HZ120" value="HZ120" selected>120HZ</option>
<option value="HZ240">240HZ</option>
</select>
</div>
<div class="buttons-box">
<input
id="input-color" type="color" value="#33ff66"
onchange="(() => chip8 && chip8.display.setColors(this.value))()"
/>
<button onclick="(() => chip8 && chip8.display.resetColors())()">RESET</button>
</div>
</div>
</div>
<div id="rom-info"></div>
<div id="footer">
<a href="https://github.com/kastorcode/chip-8-emulator-typescript" target="_blank">
<kastor.code/>
</a>
</div>
<script src="public/js/chip8.bundle.js"></script>
<script>
window.onblur = function () {
pause()
}
window.onload = function () {
getChip8RomList()
document.addEventListener('keyup', keyup)
}
function keyup (event) {
event.preventDefault()
switch (event.code) {
case 'ArrowLeft':
case 'Numpad4': {
document.querySelector('canvas').scrollIntoView({
behavior: 'smooth', block: 'center', inline: 'center'
})
break
}
case 'ArrowRight':
case 'Numpad6': {
pause()
document.getElementById('rom-info').scrollIntoView({
behavior: 'smooth'
})
break
}
case 'Backspace':
case 'Escape': {
stop()
break
}
case 'Enter':
case 'Space': {
togglePause()
break
}
case 'Numpad0':
case 'Numpad5': {
fullscreen()
break
}
}
}
function allowDrop (event) {
event.preventDefault()
}
function fullscreen () {
if (!chip8) {
return
}
const canvas = document.getElementsByTagName('canvas')[0]
if (canvas.webkitRequestFullScreen) {
canvas.webkitRequestFullScreen()
}
else if (canvas.mozRequestFullScreen) {
canvas.mozRequestFullScreen()
}
}
function setTimer (event) {
if (!chip8) {
return
}
chip8.setTimer(event.target.value)
}
function onGetFile (event) {
event.preventDefault()
if (chip8) {
return
}
const file = (() => {
if (event.dataTransfer) {
return event.dataTransfer.items[0].getAsFile()
}
else if (event.target.files) {
return event.target.files[0]
}
else if (event.target.value) {
return event.target.value
}
return null
})()
if (!file) {
return
}
if (typeof file === 'string') {
getRomInfo(file)
}
else if (file.name.split('.').pop().toLowerCase() !== 'ch8') {
return
}
document.querySelector('canvas').scrollIntoView({
behavior: 'smooth', block: 'center', inline: 'center'
})
onGetFileDOMeffects()
Chip8.start(file)
}
function applyDefaultSettings () {
document.getElementById('HZ120').selected = true
document.getElementById('input-color').value = '#33ff66'
}
function onGetFileDOMeffects () {
document.getElementById('header').style = 'opacity:0;'
document.getElementById('file').style = 'display:none;'
document.getElementsByTagName('canvas')[0].style = 'display:flex;'
applyDefaultSettings()
}
function revertDOMeffects () {
document.getElementById('header').style = 'opacity:1;'
document.getElementById('file').style = 'display:flex;'
document.getElementsByTagName('canvas')[0].style = 'display:none;'
document.getElementById('input-file').value = ''
document.getElementById('option-rom').selected = true
document.getElementById('rom-info').innerText = ''
applyDefaultSettings()
}
function pause () {
if (!chip8) {
return
}
chip8.pause()
}
function togglePause () {
if (!chip8) {
return
}
chip8.togglePause()
}
function stop () {
if (!chip8) {
return
}
chip8.stop()
revertDOMeffects()
}
async function getChip8RomList () {
let response = await fetch('https://api.github.com/repos/kripod/chip8-roms/contents')
response = await response.json()
response = response.filter(({ type }) => type === 'dir')
response = await Promise.all(response.map(async ({ url }) => {
let files = await fetch(url)
files = await files.json()
files = files.filter(({ name }) => name.split('.').pop().toLowerCase() === 'ch8')
return files
}))
const documentFragment = document.createDocumentFragment()
for (const i in response) {
for (const j in response[i]) {
const option = document.createElement('option')
option.value = response[i][j].download_url
option.text = response[i][j].name
documentFragment.appendChild(option)
}
}
document.getElementById('select-rom').appendChild(documentFragment)
}
async function getRomInfo (ch8) {
try {
let response = await fetch(ch8.replace(/\.ch8/i, '.txt'))
if (response.status === 200) {
response = await response.text()
document.getElementById('rom-info').innerText = response
}
}
catch (error) {
console.error(error)
}
}
</script>
</body>
</html>