artifact crawl

class Plugin {
    /**
     * A constructor can be used to keep track of information.
     */
    constructor() {
        captureArtifacts(ui.getSelectedPlanet().locationId, 80);
    }

}

plugin.register(new Plugin());

function captureArtifacts(fromId, maxDistributeEnergyPercent) {
    const to = df.getPlanetWithId(fromId);
    const from = df.getPlanetWithId(fromId);

    // Rejected if has pending outbound moves
    const unconfirmed = df.getUnconfirmedMoves().filter(move => move.from === fromId)
    if (unconfirmed.length !== 0) {
        //console.log("rejecting candidate for having unconfirmed outbound moves");
        return;
    }

    const candidates_ = df.getPlanetsInRange(fromId, maxDistributeEnergyPercent)
        .filter(p => df.isPlanetMineable(p))
        .filter(p => p.owner === "0x0000000000000000000000000000000000000000")
        .map(to => {
            return [to, distance(from, to)]
        })
        .sort((a, b) => a[1] - b[1]);

    let i = 0;
    const energyBudget = Math.floor((maxDistributeEnergyPercent / 100) * to.energy);

    //console.log("energyBudget ", energyBudget);

    let energySpent = 0;
    while (energyBudget - energySpent > 0 && i < candidates_.length) {

        const energyLeft = energyBudget - energySpent;

        // Remember its a tuple of candidates and their distance
        const candidate = candidates_[i++][0];
        //console.log(candidate);

        // Rejected if has unconfirmed pending arrivals
        const moves = df.getUnconfirmedMoves().filter(move => move.to === candidate.locationId)
        if (moves.length !== 0) {
            //console.log("rejecting candidate for having unconfirmed moves");
            continue;
        }

        // Rejected if has pending arrivals
        const arrivals = getArrivalsForPlanet(candidate.locationId);
        if (arrivals.length !== 0) {
            //console.log("rejecting candidate for having arrivals");
            continue;
        }

        const energyArriving = (candidate.energyCap * 0.15) + (candidate.energy * (candidate.defense / 100));
        // needs to be a whole number for the contract
        const energyNeeded = Math.ceil(df.getEnergyNeededForMove(fromId, candidate.locationId, energyArriving));
        if (energyLeft - energyNeeded < 0) {
            //console.log("rejecting candidate energyNeeded ", energyNeeded, " exceeds energyLeft ", energyLeft);
            continue;
        }

        console.log(`df.move("${fromId}","${candidate.locationId}",${energyNeeded},0)`);
        df.move(fromId, candidate.locationId, energyNeeded, 0);
        energySpent += energyNeeded;
    }
}

function getArrivalsForPlanet(planetId) {
    return df.getAllVoyages().filter(arrival => arrival.toPlanet === planetId);
}

//returns tuples of [planet,distance]
function distance(from, to) {
    let fromloc = from.location;
    let toloc = to.location;
    return Math.sqrt((fromloc.coords.x - toloc.coords.x) ** 2 + (fromloc.coords.y - toloc.coords.y) ** 2);
}