EventChain

Easy-to-use event system

Originally developed by Luck @ https://github.com/lucko/helper - the event system from that library was split off and re-written to be more generic.

This event system allows for many Minecraft plugin types (not just Bukkit) as well as the ability to create completely new and custom ones.

Maven

<repositories>
  <repository>
    <id>egg82-repo-releases</id>
    <url>https://repo.egg82.me/releases/</url>
  </repository>
  <repository>
    <id>egg82-repo-snapshots</id>
    <url>https://repo.egg82.me/snapshots/</url>
  </repository>
</repositories>

<dependencies>
  <dependency>
    <groupId>ninja.egg82</groupId>
    <artifactId>event-chain-api</artifactId>
    <version>LATEST-VERSION</version>
    <scope>provided</scope>
  </dependency>
  <dependency>
    <groupId>ninja.egg82</groupId>
    <artifactId>event-chain-TYPE</artifactId>
    <version>LATEST-VERSION</version>
  </dependency>
</dependencies>

Link to the latest API version is available here.
Link to the latest core version is available here.
Javadocs are available from the same repository, so IDEs should be able to pick those up automatically.

Gradle

repositories {
    maven {
        url 'https://repo.egg82.me/releases/'
    }
}

dependencies {
    compileOnly 'ninja.egg82:event-chain-api:LATEST-VERSION'
    compileOnly 'ninja.egg82:event-chain-TYPE:LATEST-VERSION'
}

Link to the latest API version is available here.
Link to the latest core version is available here.
Javadocs are available from the same repository, so IDEs should be able to pick those up automatically.

Examples

Bukkit

BukkitEvents.subscribe(plugin, PlayerLoginEvent.class, EventPriority.MONITOR)
  .filter(e -> e.getResult() == PlayerLoginEvent.Result.ALLOWED)
  .filter(e -> !Bukkit.hasWhitelist() || e.getPlayer().isWhitelisted())
  .handler(e -> {
    BukkitPlatform.addUniquePlayer(e.getPlayer().getUniqueId());
    String ip = getIp(e.getAddress());
    if (ip != null) {
      try {
        BukkitPlatform.addUniqueIp(InetAddress.getByName(ip));
      } catch (UnknownHostException ex) {
        logger.warn("Could not create InetAddress for " + ip);
      }
    }
});

Bungee

BungeeEvents.subscribe(plugin, PostLoginEvent.class, EventPriority.HIGHEST)
  .handler(e -> {
    BungeePlatform.addUniquePlayer(e.getPlayer().getUniqueId());
    try {
      BungeePlatform.addUniqueIp(InetAddress.getByName(getIp(e.getPlayer().getAddress())));
    } catch (UnknownHostException ex) {
      logger.warn("Could not create InetAddress for " + getIp(e.getPlayer().getAddress()));
    }
});

Velocity

VelocityEvents.subscribe(plugin, proxy, PostLoginEvent.class, PostOrder.LAST)
  .handler(e -> {
    VelocityPlatform.addUniquePlayer(e.getPlayer().getUniqueId());
    try {
      VelocityPlatform.addUniqueIp(InetAddress.getByName(getIp(e.getPlayer().getRemoteAddress())));
    } catch (UnknownHostException ex) {
      logger.warn("Could not create InetAddress for " + getIp(e.getPlayer().getRemoteAddress()));
    }
});

Luck's repo for reference here.