nothing-simulator/docs/js/upgrade.js

let exec = {};

exec.addCube = function () {
    cubePos.push([Math.random() * 1000 - 500, Math.random() * 1000 - 500, Math.random() * 30 - 200,
    Math.random() * 2 - 1, Math.random() * 2 - 1, Math.random() * 2 - 1
    ])
}

let upgrades = window.localStorage.getItem('upgrades')

if (!upgrades) {
    upgrades = [
        {
            'name': 'Set',
            'price': 10,
            'exec': 'addCube'
        }
    ]
} else {
    upgrades = JSON.parse(upgrades);
}

let hud2 = document.querySelector('.hud');

for (let upgrade of upgrades) {
    let button = document.createElement("div");
    button.classList.add('item');
    button.textContent = `Buy ${upgrade.name} for ${upgrade.price} nil`
    hud2.appendChild(button);

    button.addEventListener('click', () => {
        if (nothingness < upgrade.price) return;
        nothingness -= upgrade.price;
        upgrade.price *= 1.02;
        button.textContent = `Buy ${upgrade.name} for ${upgrade.price} nil`
        exec[upgrade.exec]();
    })
}

let cubesI = window.localStorage.getItem('cubes') * 1;

for (let i = 0; i < cubesI; i++) {
    exec.addCube();
}