town-page/_assets/javascript/sequencer.coffee.liquid

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#= require jquery-3.4.1.slim.js
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$(document).data( "tempo", 80)
$(document).data( "sides", 3)
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$(document).ready ->
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current_col = 0
# append audio elements to buttons:
$(".sequencer-button").data( "side", 1 )
for row in [1..4]
for side in [1..$(document).data("sides")]
$("audio#row" + row ).clone().attr("id","").appendTo(".sequencer-button[row=" + row + "]")
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setInterval =>
playCol(current_col)
if (current_col <= 6)
current_col++
else
current_col = 0
, 15000 / $(document).data("tempo")
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playCol = (col) ->
$('.sequencer-button').removeClass('activated')
for row in [1..4]
current_button = $('.sequencer-button').eq(col + ( row - 1) * 8)
current_button.addClass('activated')
if ( current_button.prop('checked') )
side = current_button.data("side")
try
current_button.children(":eq(" + (side - 1) + ")")[0].play()
catch e
console.log "Error playing sound."
if (side >= $(document).data("sides"))
current_button.data("side", 1)
side = 1
else
current_button.data("side", side + 1)