Method spawnObjects

source/game/StarSystemWorldServer.cpp:340–378

}

void SystemWorldServer::spawnObjects() {
  double diff = min(systemConfig().objectSpawnCycle, time() - m_lastSpawn);
  m_lastSpawn = time() - diff;
  while (diff > m_objectSpawnTime) {
    m_lastSpawn += m_objectSpawnTime;
    m_objectSpawnTime = Random::randf(systemConfig().objectSpawnInterval[0], systemConfig().objectSpawnInterval[1]);
    diff = time() - m_lastSpawn;

    WeightedPool<String> spawnPool = jsonToWeightedPool<String>(Root::singleton().assets()->json("/systemworld.config:objectSpawnPool").toArray());
    String name = spawnPool.select();
    Uuid uuid = Uuid();
    auto objectConfig = systemObjectConfig(name, uuid);

    SystemObjectPtr object;
    RandomSource rand = RandomSource(Random::randu64());
    Vec2F position = randomObjectSpawnPosition(rand);
    if (time() > m_lastSpawn + m_objectSpawnTime && objectConfig.moving) {
      // if this is not the last object we're spawning, and it's moving, immediately put it in orbit around a planet
      auto targets = planets().filtered([this](CelestialCoordinate const& p) {
        auto objectsAtPlanet = objects().filtered([p](SystemObjectPtr const& o) { return o->orbitTarget() == p; });
        return objectsAtPlanet.size() == 0;
      });
      if (targets.size() > 0) {
        auto target = Random::randFrom(targets);

        Vec2F targetPosition = planetPosition(target);
        Vec2F relativeOrbit = (position - targetPosition).normalized() * (clusterSize(target) / 2.0 + objectConfig.orbitDistance);
        object = make_shared<SystemObject>(objectConfig, uuid, targetPosition + relativeOrbit, m_lastSpawn);

        object->enterOrbit(target, planetPosition(target), m_lastSpawn);
      } else {
        object = make_shared<SystemObject>(objectConfig, uuid, position, m_lastSpawn);
      }
    } else {
      object = make_shared<SystemObject>(objectConfig, uuid, position, m_lastSpawn);
    }
    addObject(object);
  }
}

Vec2F SystemWorldServer::randomObjectSpawnPosition(RandomSource& rand) const {
  List<Vec2F> spawnRanges;