// LocationListener impl
@Override
public void onLocationChanged(Location location) {
String topic = topic(location);
if (!topic.equals(currentTopic)) {
Log.d(LOG_TAG, "new grid location: " + topic);
if (sendInfectionMessage(true)) {
currentTopic = topic;
subscribeToCurrentTopic();
}
}
int thisRegion = calcRegionCode(location);
if (thisRegion != region || bioHazards.isEmpty()) {
Log.d(
LOG_TAG,
"new region or no biohazards in region " + thisRegion + " - generating biohazards");
region = thisRegion;
createBiohazards(location);
EventBus.getDefault().post(new MapEvent(MapEvent.Type.REGION_UPDATED, region, bioHazards));
}
for (Biohazard b : bioHazards) {
if (b.getLocation().distanceTo(location) < BIOHAZARD_INFECTION_RADIUS) {
Virus v = VirusFactory.fromBiohazard(b.getSeed(), b.getId());
if (gameDatabase.findVirus(v.getId()) == null) {
Log.d(LOG_TAG, "infection by approaching biohazard " + b.getId());
gameDatabase.addVisitedBiohazard(b.getId());
addVirus(v);
}
}
}
}
private void addVirus(Virus v) {
if (v != null && gameDatabase.findVirus(v.getId()) == null) {
Log.d(LOG_TAG, "infected with virus: " + v.getId());
gameDatabase.addVirus(v);
vibrator.vibrate(300);
EventBus.getDefault().post(new GameEvent(GameEvent.Type.NEW_VIRUS, v.getId(), 1));
}
}
@Override
public void onCreate() {
super.onCreate();
vibrator = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
gameDatabase = new GameDatabase(this);
// init game DB
if (gameDatabase.getViruses().isEmpty()) {
Virus v = VirusFactory.createMutation(null);
Log.d(LOG_TAG, "new virus: " + v.getId());
gameDatabase.addVirus(v);
EventBus.getDefault().post(new GameEvent(GameEvent.Type.NEW_VIRUS, v.getId(), 0));
}
clientId = gameDatabase.getSetting("clientId", null);
if (clientId == null) {
clientId = UUID.randomUUID().toString();
gameDatabase.putSetting("clientId", clientId);
Log.i(LOG_TAG, "persisted new clientId: " + clientId);
}
// MQTT
mqttClient = new MqttAndroidClient(this, BROKER_URI, clientId);
mqttClient.setCallback(this);
// Location
locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER))
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER,
MIN_LOCATION_UPDATE_INTERVAL_MS,
MIN_LOCATION_UPDATE_DISTANCE_M,
this);
else
locationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER,
MIN_LOCATION_UPDATE_INTERVAL_MS,
MIN_LOCATION_UPDATE_DISTANCE_M,
this);
findBestLastLocation();
try {
MqttConnectOptions options = new MqttConnectOptions();
options.setKeepAliveInterval(0); // no keepalive pings
mqttClient.connect(options, null, this);
Log.d(LOG_TAG, "connected to MQTT broker as " + clientId);
} catch (MqttException e) {
Log.e(LOG_TAG, "could not connect to MQTT broker at " + BROKER_URI);
}
EventBus.getDefault().register(this);
}
private boolean sendInfectionMessage(boolean entering) {
if (mqttClient != null && mqttClient.isConnected()) {
try {
JSONArray a = gameDatabase.findAllVirusDataAsJson();
JSONObject o = new JSONObject();
if (entering) o.put("entering", currentTopic);
o.put("sender", clientId);
o.put("viruses", a);
String payload = o.toString();
Log.d(LOG_TAG, "publishing to " + currentTopic + ": " + payload);
IMqttDeliveryToken token =
mqttClient.publish(currentTopic, new MqttMessage(payload.getBytes()));
token.setActionCallback(
new IMqttActionListener() {
@Override
public void onSuccess(IMqttToken asyncActionToken) {
sendEnterMessage = false;
}
@Override
public void onFailure(IMqttToken asyncActionToken, Throwable exception) {}
});
return true;
} catch (MqttException e) {
//
} catch (JSONException e) {
Log.e(LOG_TAG, "JSONException", e);
}
}
return false;
}
@Override
public void run() {
savePending = false;
database.saveLater(game);
}
public void onPause() {
handler.removeCallbacks(this);
database.save(game);
}
