/* @author RonanLana */

function enter(pi) {
    var stage = ((Math.floor(pi.getMapId() / 100)) % 10) - 1;
    var em = pi.getEventManager("TD_Battle" + stage);
    if (em == null) {
        pi.playerMessage(5, "TD Battle " + stage + " encountered an unexpected error and is currently unavailable.");
        return false;
    }

    if (pi.getParty() == null) {
        pi.playerMessage(5, "You are currently not in a party, create one to attempt the boss.");
        return false;
    } else if (!pi.isLeader()) {
        pi.playerMessage(5, "Your party leader must enter the portal to start the battle.");
        return false;
    } else {
        var eli = em.getEligibleParty(pi.getParty());
        if (eli.size() > 0) {
            if (!em.startInstance(pi.getParty(), pi.getPlayer().getMap(), 1)) {
                pi.playerMessage(5, "The battle against the boss has already begun, so you may not enter this place yet.");
                return false;
            }
        } else {
            pi.playerMessage(5, "Your party must consist of at least 2 players to attempt the boss.");
            return false;
        }

        pi.playPortalSound();
        return true;
    }
}