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
|
import Tone from 'tone'
import StartAudioContext from './startAudioContext'
const isIphone = (navigator.userAgent.match(/iPhone/i)) || (navigator.userAgent.match(/iPod/i))
const isIpad = (navigator.userAgent.match(/iPad/i))
const isAndroid = (navigator.userAgent.match(/Android/i))
const isMobile = isIphone || isIpad || isAndroid
const isDesktop = ! isMobile
document.body.classList.add(isMobile ? 'mobile' : 'desktop')
const browser = { isIphone, isIpad, isMobile, isDesktop }
function clamp(n,a,b){ return n<a?a:n<b?n:b }
function choice (a){ return a[ Math.floor(Math.random() * a.length) ] }
function mod(n,m){ return n-(m * Math.floor(n/m)) }
function firstTouch(f){ return e => e.preventDefault && f(e.touches[0]) }
function requestAudioContext (fn) {
if (isMobile) {
const container = document.createElement('div')
const button = document.createElement('div')
button.innerHTML = 'Tap to start - please unmute your phone'
Object.assign(container.style, {
display: 'block',
position: 'absolute',
width: '100%',
height: '100%',
zIndex: '10000',
top: '0px',
left: '0px',
backgroundColor: 'rgba(0, 0, 0, 0.8)',
})
Object.assign(button.style, {
display: 'block',
position: 'absolute',
left: '50%',
top: '50%',
padding: '20px',
backgroundColor: '#7F33ED',
color: 'white',
fontFamily: 'monospace',
borderRadius: '3px',
transform: 'translate3D(-50%,-50%,0)',
textAlign: 'center',
lineHeight: '1.5',
width: '150px',
})
container.appendChild(button)
document.body.appendChild(container)
StartAudioContext.setContext(Tone.context)
StartAudioContext.on(button)
StartAudioContext.onStarted(_ => {
container.remove()
fn()
})
} else {
fn()
}
}
export { choice, mod, clamp, browser, firstTouch, requestAudioContext }
|
