liveops para games usando o firebase
TRANSCRIPT
LiveOps para games usando Firebase
Vítor Bruno de AlmeidaSenior Software Engineer
@vb
Live Game Operations
Testes passando
Backlog vazio
App publicado
Android Dev Conference 2017
CHURN
Source: Quettra, Average retention for Google Play Apps - 2016
Android Dev Conference 2017Source: Quettra, Average retention for Google Play Apps - 2016
Android Dev Conference 2017Source: AppsFlyer, The State of App Engagement 2017
Android Dev Conference 2017
“Retention is the king.”Bria Balfour, VP Growth @ HubSpot
Android Dev Conference 2017
Retention
Lifetime Value
Tempo de payback
Viralidade
Android Dev Conference 2017Source: Quettra, How do the best apps perform - 2016
Conteúdo é essencial
Jogadores ficam engajados por mais tempo
Tempo é dinheiro
Alto engajamento e retenção levam a um melhor LTV
=
Android Dev Conference 2017
Distribuição de conteúdo
Ofertas especiais
Eventos e competições
Firebase
PlataformaFirebase
Remote Config
Android Dev Conference 2017
Remote Config
Cloud Storage
Android Dev Conference 2017
Remote Config
Cloud Storage
Realtime Database
Android Dev Conference 2017
Remote Config
Cloud Storage
Realtime Database
Cloud Messaging
Android Dev Conference 2017
Remote Config
Cloud Storage
Realtime Database
Cloud Messaging
Cloud Functions
Android Dev Conference 2017
Android Dev Conference 2017
Mãos à obra!
Android Dev Conference 2017
1. UPDATE FORÇADO
OK
fun hasLatestVersion(): Boolean {return FirebaseRemoteConfig.getInstance()
.getLong("latest_version")
.toInt() == BuildConfig.VERSION_CODE}
fun onCreate() {if (hasLatestVersion()) {
launchGameActivity()} else {
launchForceUpdateDialog()}
}
2. Caixa de notícias
fun onGameStart() {val latestNewsId = FirebaseRemoteConfig.getInstance()
.getLong("latest_news_id")if (latestNewsId > loadLastNewsFromDb().id) {
loadNews(latestNewsId, { news -> displayNews(news) })}
}
fun loadNews(newsId: Long, callback: (newsTitle: News) -> Unit) {FirebaseDatabase.getInstance().getReference("news")
.child(newsId.toString())
.addListenerForSingleValueEvent {data -> data.getValue(News::class.java)?.let(callback)
}}
3. Sincronização de relógio
const functions = require('firebase-functions');const moment = require('moment');const cors = require('cors')({origin: true});
exports.date = functions.https.onRequest((req, res) => {cors(req, res, () => {res.status(200).send(moment().format());
});});
https://us-central1-meujogo.cloudfunctions.net/date
fun onGameStart() {getServerTime({ serverTime -> setGameTime(serverTime) })
}
fun getServerTime(callback: (serverTime: Instant) -> Unit) {"https://us-central1-meujogo.cloudfunctions.net/date".httpGet()
.responseString { request, response, result ->when (result) {
is Result.Success -> {callback(Instant.parse(result.getAs()))
}}
}}
https://github.com/kittinunf/Fuel
4. Eventos 4. Eventos
fun onGameResume() {FirebaseDatabase.getInstance().getReference("events")
.orderByChild("fim")
.limitToLast(5)
.addListenerForSingleValueEvent { data ->val now = Instant.now()data?.children?.find {
val event = it.getValue(EventConfig::class.java)event.fim.isAfter(now) && event.inicio.isBefore(now)
}?.let {startNewEvent(it.getValue(EventConfig::class.java))
}}
}
fun onVictory(gold: Long, xp: Long) {val event = gameState.currentEventplayer.earnGold(if (event != null) (gold * event.multGold).toLong() else gold)player.earnXp(if (event != null) (xp * event.multXp).toLong() else xp)
}
5. Ofertas
class Item(val sku: String, val image: String)class Shop {
val items = ArrayList<Item>()}
private fun onShopOpened(shop: Shop) {FirebaseDatabase.getInstance().getReference("shop")
.addListenerForSingleValueEvent { data ->data?.children?.forEach { itemConfig ->
val itemDbKey = FirebaseRemoteConfig.getInstance().getString(itemConfig.key)
addItemToShop(itemDbKey, shop)}
}}
private fun addItemToShop(dbKey: String, shop: Shop) {FirebaseDatabase.getInstance().getReference("items")
.addListenerForSingleValueEvent { data ->data?.child(dbKey)?.getValue(Item::class.java)?.let {
shop.items.add(it)}
}}
PLANEJAMENTO É ESSENCIAL
Android Dev Conference 2017
Obrigado pela presença!
Contato:
Imagens e ferramentas:
● https://unsplash.com/● https://www.pexels.com/● http://typicalhope.tumblr.com/● http://www.thokamaer.com/● http://jonasmosesson.se/● https://romannurik.github.io/SlidesCodeHighlighter/