Add fields:
PHP Code:
private boolean respawning = true;
private MCWZData mcpqData;  
Add methods:
PHP Code:
public final List<MapleMonster> getAllMonsters() {    return getAllMapObjects(MapleMapObjectType.MONSTER);
}

public void addMonsterSpawn(MapleMonster monster, int mobTime, int team) {
    Point newpos = calcPointBelow(monster.getPosition());
    newpos.y -= 1;
    SpawnPoint sp = new SpawnPoint(monster, newpos, mobTime, team);
    monsterSpawn.add(sp);
    if (!respawning) return;

    if (sp.shouldSpawn() || mobTime == -1) {
        sp.spawnMonster(this);
    }
}

public void setReactorState(MapleReactor reactor, byte state) {
    synchronized (this.mapobjects) {
        reactor.setState(state);
        broadcastMessage(MaplePacketCreator.triggerReactor(reactor, state));
    }
}

public <E extends MapleMapObject> List<E> getAllMapObjects(MapleMapObjectType type) {
    List<E> ret = new ArrayList<>();
    synchronized (mapobjects) {
        for (MapleMapObject l : mapobjects.values()) {
            if (l.getType() == type) {
                ret.add((E) l);
            }
        }
    }
    return ret;
}

public void clearDrops() {
    List<MapleMapItem> items = getAllMapObjects(MapleMapObjectType.ITEM);
    for (MapleMapItem itemmo : items) {
        removeMapObject(itemmo);
        broadcastMessage(MaplePacketCreator.removeItemFromMap(itemmo.getObjectId(), 0, 0));
    }
}

public Collection<SpawnPoint> getSpawnPoints() {
    return monsterSpawn;
}

public void respawn() {
    for (SpawnPoint sp : this.monsterSpawn) {
        if (sp.shouldSpawn()) {
            sp.spawnMonster(this);
        }
    }
}

public void beginSpawning() {
    this.respawning = true;
    this.respawn();
}

public boolean isRespawning() {
    return respawning;
}

public void setRespawning(boolean respawning) {
    this.respawning = respawning;
}

public MCWZData getMCPQData() {
    return this.mcpqData;
}

public void setMCPQData(MCWZData data) {
    this.mcpqData = data;
}