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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title></title>
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</head>
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<body>
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<pre id="boat">
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_ _ _ _ _ _
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___ ___ _ _ _ __ | |__ ___ __ _| |_ __|_|__|_|__|_|__|_|___
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/ __|/ _ \| | | | '_ \| '_ \ / _ \ / _` | __| _|_(=^x^=)__ʕʘ‿ʘʔ___(・Д・)_|______
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\__ \ (_) | |_| | |_) | |_) | (_) | (_| | |_ |o o o o o o o o o o o o o o o /
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|___/\___/ \__,_| .__/|_.__/ \___/ \__,_|\__| ~'`~'`~'`~'`~'`~'`~'`~ `~'`~`~'`~`~`~'`~
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</pre>
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<script>
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// 4. Cycle through a string / array to create a wave pattern using a generator function
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// See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/function*
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const wave = function*(pattern) {
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let index = 0
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while (true){
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yield pattern[index]
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index==pattern.length - 1 ? index = 0 : index ++
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}
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}
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// 5. Initialize the generator with the sea waves pattern from the original ASCII art of Soupboat
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let w = wave("'`~")
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// 3. Function to insert a character in a string at a certain position
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// default position 49 is just between the word soupboat and the drawing of the boat
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const putChar = (line, char, position=49) => {
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return line.slice(0, position) + char + line.slice(position)
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}
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// 2.
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const moveBoat = () => {
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// Load the ASCII art from the document
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// and split it in lines
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const boat = document.querySelector('#boat')
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const lines = boat.innerHTML.split('\n')
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// Create a new ASCII art iterating through the different lines
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const movedBoat = lines.reduce((result, line, index)=> {
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// Dont change the contents if below see level
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if (index > 5) {
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return result + line + '\n'
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}
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// On the fourth line insert the wave pattern
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if (index == 4) {
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let land = line.slice(0,49)
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let sea = line.slice(49) + w.next().value
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return result + land + sea + '\n'
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}
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// On the other lines insert just a blank space
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return result + putChar(line, ' ') + '\n'
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}, "")
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// Replace old ASCII with new ASCII
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boat.innerHTML = movedBoat
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}
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// 1. Repeat the moveBoat() function every second
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setInterval(()=>moveBoat(), 500)
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</script>
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</body>
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</html>
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