6 lines
353 B
HTML
6 lines
353 B
HTML
<body onload="z=255;C.height*=2;X=0;k=240;s=[a=h=136]
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setInterval(j=>{Y=X&k;s.unshift(h=h+X&15|h+Y&k)
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G=i=>(v.fillStyle='#0'+9*s[q](i)+9*(i==a),v.fillRect(i%j*j,i&k,j,j),i&&G(i-1))
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onkeydown=e=>X=[Y|j,X%j||15,Y||k,X%j|1][e.which&3]
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Q=_=>s[q='includes'](a=a*37+7&z)&&Q()
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h-a?s[q](h,1)?s=[h]:s.pop():Q(v=C.getContext('2d'));G(z)},a,16)"><canvas id=C> |