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static/qrplay/v2b.html
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static/qrplay/v2b.html
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<!doctype html>
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<html lang="en">
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<head>
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<title>qrplay</title>
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<style>
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body {
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font-family: sans-serif;
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max-width: 40rem;
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margin: 0 auto;
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padding: 1rem;
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}
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</style>
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</head>
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<body>
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<nav><a href="/">home</a></nav>
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<h2>qrplay by nycki and SArpnt</h2>
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<p>a QR-code sized implementation of ZZT Play, which you may know from the <a href="https://chriskallen.com/zzt/hallofmusic.html">ZZT Hall of Music</a>.</p>
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<p>I designed this because I wanted a program I could print on a business card, and <a href="https://git.disroot.org/SArpnt">SArpnt</a> found some clever ways to shrink it even further. The version on this page is commented, the version in the QR code is minified.</p>
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<p>paste ZZT music code in this box, then click the button to #play!</p>
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<!-- snip here -->
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<meta name=viewport content=initial-scale=1>
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<center>
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<p><a href=http://nycki.net/qrplay>qrplay</a></p>
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<textarea id=f style=width:30em;height:6rem></textarea><p>
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<button onclick='
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v=f.value.toLowerCase();
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f.A?.close();
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A=f.A=new AudioContext;
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T=[];
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for(
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c=t=o=k=Z=0,l=2;C=v[c++];
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// no match
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z<0?0:
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// comments
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z<2?k=z:
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k?0:
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// change octave
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z<4?o+=12*--d:
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// triplets and dots
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z<6?l*=3/d:
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// note
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z<13?(
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O=new OscillatorNode(A,{
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type:`square`,
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detune:100*(`0x`+d-(v[c]==`!`)+(v[c]==`#`)+o-9)
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}),
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G=new GainNode(A,{gain:1/20}),
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O.connect(G),
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G.connect(A.destination),
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O.start(t),
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O.stop(t+=l*7/256)
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):
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// rest, also skip percussion
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z<23?t+=l*7/256:
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// reset octave and duration
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z<24?(o=0,l=2):
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// set note length
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z<31?l=1<<(z-24):
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// change channel
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(T[Z]=t,Z=+v.slice(c,c+=2),t=T[Z]|0)
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// d is additional data that varies with the operation.
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)d=`--0229024579b`[z=`\n;-+.3cdefgab012456789x@jtsiqhwz`.indexOf(C)]
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'>#play</button> <button onclick=f.A.close()>#stop</button></center>
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<!-- stop snipping here -->
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<hr>
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<table style="text-align: center;">
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<tr><td>qrplay</td><td>Solfeggettio in C Minor</td></tr>
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<tr>
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<td>
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<img src="qrplay-v1.png">
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</td>
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<td>
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<img src="qrplay-solfeggettio.png">
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</td>
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</tr>
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<tr>
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<td><textarea>data:text/html,<meta%20name="viewport"%20content="width=device-width%20initial-scale=1.0"><textarea%20id=f></textarea><br><button%20onclick='/*qrplay%20v1,%20nycki%20&%20SArpnt,%202025*/v=f.value;T=[];Z=0;f.A=A=f.A||new%20AudioContext;B=new%20GainNode(A,{gain:0.4});B.connect(A.destination);for(i=o=k=t=0,l=1;c=v[i++],d=v[i],c;z<0?0:z>29?k=1:z>28?k=0:k?0:z>27?(T[Z]=t,Z=+v.slice(i,i+=2),t=T[Z]||0):z>17?t+=l:z<3?z?o+=g:(o=0,l=1/8):(console.log(z),z)&1?console.log(l=g):(a=new%20OscillatorNode(A,{type:`square`,detune:100*(g+o+(d==`%23`)-(d==`!`))}),a.connect(B),a.start(t*.4),t+=l,a.stop(t*.4)))g=[,-12,12,4,-9,2,-7,1,-5,.5,-4,.25,-2,1/8,0,l/3,2,l*1.5][z=`@-+wchdqeifsgta3b.x012456789z\npovukr\x27`.indexOf(c.toLowerCase())]'>%23play</button><button%20onclick='f.A.close();f.A=0'>%23stop</button></textarea></td>
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<td><textarea id="s">;; title Solfeggettio
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;; artist JS Bach
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@i-e!ce!g+ce!dc-bgb+dgfe!de!
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@ice!g+ce!dcdc-bagfe!d
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@ie!ce!g+ce!dc-bgb+dgfe!d
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@i+e!ce!g+ce!dcdc-bagfe!d
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@i+e!c-ge!c++c-ge!a!--fa!+cfa!+ce!
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@i+d-b!fd-b!++b!fdg--e!gb!+dgb!+d
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@i+ge!dc-ge!dh.c</textarea></td>
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</tr>
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</table>
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<p>qrplay v2a</p>
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<img src="qrplay-v2a3.png">
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<textarea>data:text/html,<meta%20name=viewport%20content=initial-scale=1><textarea%20id=f></textarea><br><button%20onclick="/*qrplay%20v2a,%20nycki%20&%20SArpnt,%202025*/f.A?.close();B=new%20GainNode(f.A=A=new%20AudioContext,{gain:0.1});B.connect(A.destination);r=.4;l=1;T=[];v=f.value;W=A.createBuffer(1,s=A.sampleRate,s);for(i=0;i++<2*s;W.getChannelData(0)[i]=Math.random()*2-1);p=n=>(n.connect(B),n.start(t*r),t+=l,n.stop(t*r));for(i=o=k=t=Z=0;c=v[i++],d=v[i],c;z<0?0:!z?(o=0,l=1/8):z<3?o+=g:z>28?k=z-29:k?0:z>27?(T[Z]=t,Z=+v.slice(i,i+=2),t=T[Z]||0):z>18?p((w=A.createBufferSource(),w.buffer=W,w.loop=1,w)):z>17?t+=l:z&1?l=g:p(new%20OscillatorNode(A,{type:'square',detune:100*(g+o+(d=='%23')-(d=='!'))})))%20g=[,-12,12,4,-9,2,-7,1,-5,.5,-4,.25,-2,1/8,0,l/3,2,l*1.5][z=`@-+wchdqeifsgta3b.x012456789z\npovukr'`.indexOf(c.toLowerCase())]">%23play</button>%20<button%20onclick=f.A.close()>%23stop</button></textarea>
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<p>we will rock you</p>
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<textarea id="rock">U137V40
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@s.9x9x6xxx9x9x6xxx9x9x6xxx9x9x6xxx
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@s.deedi.es.eei.des.de
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@s.edi.es.eeedi.eags.g-b+dx
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@s.ei.es.dexxdexexe
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@s.xxxdddxdd-bxage+eq.x
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@q.gf#eds.exex6xxx9x9x6xxx
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@q.gf#eds.exex6xxx9x9x6xxx
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@s.deedi.es.eei.des.de
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@s.edi.es.eeedi.eags.g-b+dx
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@s.ei.es.dexxdexexe
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@s.xxxdddxdd-bxage+eq.x
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@q.gf#eds.exex6xxx9x9x6xxx
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@q.gf#eds.exex6xxx9x9x6xxx
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@q.gf#eds.exex6xxx9x9x6xxx
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@q.gf#eds.exex6xxx9x9x6xxx
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</textarea>
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<p>for security reasons, your phone probably won't open these as links. you'll have to copy and paste the text into your browser's uri input.</p>
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<script>
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// set default value for input
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f.value=(f.value
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|| window.location.search.slice(1).replaceAll('%20', ' ').replaceAll('%0a','\n').replaceAll('%0A','\n').replaceAll('%23', '#')
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|| s.value
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);
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// remove redundant title
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document.querySelector('center p').setAttribute('hidden', 'true');
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// add save button
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document.querySelector('center p:last-child').innerHTML+=`
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<button onclick='
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window.location.search = "?"+f.value.replaceAll(" ","%20").replaceAll("\n","%0a").replaceAll("#","%23")
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'>#save</button>
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`;
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</script>
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</body>
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</html>
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1
static/qrplay/v2b.min.html
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static/qrplay/v2b.min.html
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<meta name=viewport content=initial-scale=1><center><p><a href=http://nycki.net/qrplay>qrplay</a></p><textarea id=f style=width:30em;height:6rem></textarea><p><button onclick='v=f.value.toLowerCase();f.A?.close();A=f.A=new AudioContext;T=[];for(c=t=o=k=Z=0,l=2;C=v[c++];z<0?0:z<2?k=z:k?0:z<4?o+=12*--d:z<6?l*=3/d:z<13?(O=new OscillatorNode(A,{type:`square`,detune:100*(`0x`+d-(v[c]==`!`)+(v[c]==`#`)+o-9)}),G=new GainNode(A,{gain:1/20}),O.connect(G),G.connect(A.destination),O.start(t),O.stop(t+=l*7/256)):z<23?t+=l*7/256:z<24?(o=0,l=2):z<31?l=1<<(z-24):(T[Z]=t,Z=+v.slice(c,c+=2),t=T[Z]|0))d=`--0229024579b`[z=`\n;-+.3cdefgab012456789x@jtsiqhwz`.indexOf(C)]'>#play</button> <button onclick=f.A.close()>#stop</button></center>
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