59 lines
1.2 KiB
JavaScript
59 lines
1.2 KiB
JavaScript
// Aha! These are not analytics at all!
|
|
class KonamiCode {
|
|
enabled = false;
|
|
keys = ["ArrowUp", "ArrowUp", "ArrowDown", "ArrowDown", "ArrowLeft", "ArrowRight", "ArrowLeft", "ArrowRight", "b", "a"];
|
|
accepted = [...new Set(this.keys)];
|
|
inputs = [];
|
|
|
|
constructor({ enable, disable }) {
|
|
this.enable = enable;
|
|
this.disable = disable;
|
|
this.handleKey = this.handleKey.bind(this);
|
|
document.addEventListener('keydown', this.handleKey);
|
|
}
|
|
|
|
handleKey({ key }) {
|
|
if (this.enabled) {
|
|
this.reset();
|
|
return;
|
|
}
|
|
if (!this.accepted.includes(key)) return;
|
|
|
|
if (this.keys[this.inputs.length] === key) {
|
|
this.handleInput(key)
|
|
} else {
|
|
this.reset();
|
|
}
|
|
}
|
|
|
|
handleInput(key) {
|
|
this.inputs.push(key);
|
|
|
|
if (this.inputs.length === 10) {
|
|
this.handleMatch();
|
|
}
|
|
}
|
|
|
|
handleMatch() {
|
|
this.enabled = true;
|
|
this.enable();
|
|
this.inputs = [];
|
|
}
|
|
|
|
reset() {
|
|
if (this.enabled) {
|
|
this.enabled = false;
|
|
this.disable();
|
|
}
|
|
if (this.inputs.length) {
|
|
this.inputs = [];
|
|
}
|
|
}
|
|
}
|
|
|
|
export function init() {
|
|
new KonamiCode({
|
|
enable: () => document.body.classList.add('🥚'),
|
|
disable: () => document.body.classList.remove('🥚'),
|
|
});
|
|
}
|