Ducknami

A Half-Arse Konami/Custom Key Pattern Checker

This was mostly a proof-of-concept "can I make it" sort of thing, but feel free to do with it what you wish. Currently only supports events (window.keyup, input.change, etc), but could easily be extended to use whatever.

Base Usage

This is the basic usage, that uses the Konami Code by default. Arrow Keys + A + B on your keyboard.

Up Up Down Down Left Right Left Right B A

<script type="text/javascript" src="./build/ducknami.js"></script>
<script type="text/javascript">
  const duck = new Ducknami({ 
    onSuccess: () => console.log('%YOU DID IT!', 'font-size: 24px'),
  });

  window.addEventListener('keyup', duck.run);
</script>

Custom Code Usage

This is the advanced usage, if you want to set your own code sequence.

Setup: Easy way to figure out your code sequence.

The setup method will log your current sequence to the console. It uses the default 800ms delay between presses. Once you stop pressing or press too slow it will output the full sequence that you can use.

<script type="text/javascript" src="./build/ducknami.js"></script>
<script type="text/javascript">
  const duck = new Ducknami();
  window.addEventListener('keyup', duck.setup);
</script>

Usage: How to use your sequence.

Setup is similar to the basic usage, but with your new code.

<script type="text/javascript" src="./build/ducknami.js"></script>
<script type="text/javascript">
  const duck = new Ducknami({
    code: [65, 83, 68, 70, 65, 83, 68, 70], // asdfasdf
    onSuccess: () => console.log('%YOU DID IT!', 'font-size: 24px'),
  });

  window.addEventListener('keyup', duck.run);
</script>

Options

All options currently available for customizing your code entry.

Option	Default	Description
code	[38, 38, 40, 40, 37, 39, 37, 39, 66, 65]	Code sequence - Default is Konami code. Use the setup method to figure yours out easier.
debug	false	Useful for seeing why your code isn't triggering. Outputs the current sequence to the console.
delay	800	The delay between keypresses. The sequence resets if you take longer than the delay between buttons.
onSuccess	() => {}	The function to call when a successful sequence is entered.
onReset	() => {}	The function to call when a sequence resets (from being entered wrong/too slowly).