<?php

include 'Moon.php';
include 'Velocity.php';
include 'functions.php';

$moons = array_map(function ($moon) {
        $moon_coordinates = explode(', ', substr($moon, 1, -1));
        $x = (int) substr($moon_coordinates[0], 2);
        $y = (int) substr($moon_coordinates[1], 2);
        $z = (int) substr($moon_coordinates[2], 2);
        return new Moon($x, $y, $z);
    }, explode("\n", file_get_contents('input.txt'))
);

for ($i = 0; $i < 1000; $i++) {
    calculateVelocity($moons);
    updateCoordinates($moons);
}

var_dump(calculateEnergy($moons));