# Konami Code
Unlock the retro power of the Konami Code on your websites! Creates an event listener that handles detection of keyboard inputs and executes a provided payload function if the user inputs the Konami Code correctly.
This version of the code substitutes keyboard arrows for the directional pad. It also requires "Enter/Return" (as the start button) as the last key to execute the payload function, and supports optional "2 Player" mode, where "Shift" (select) is the next to last input.
Konami is ™ by the Konami Corporation and is in no way affiliated with studioKeywi. The use of the phrase "Konami Code" refers to a sequence of button inputs introduced by the game Gradius (® by Konami) and popularized by the game Contra (™ by Konami).
## Simple Usage
```html
```
## Configuration
```js
const konamiConfig = {
once: Boolean, // default: true
secondPlayer: Boolean, // default: false
payload: Function, // default: konami => console.log('payload', konami)
};
```
## Advanced Usage
The payload function provided to the builder will be executed with access to the `konami.load()` and `konami.unload()` functions via the first parameter. This allows more custom behavior in enabling/disabling the Konami Code detection
```js
import buildKonami from 'https://cdn.jsdelivr.net/gh/studiokeywi/play/konami.index';
// Example: Builds a Konami Code detector that executes in "2P mode" a single time by default, or repeats if the user agrees
buildKonami({
payload: konami => confirm('Re-enable this konami code payload?') && konami.load(),
secondPlayer: true,
}).load(); // Attach immediately
```