This library is DEFUNCT

Use Discord4J v3 instead!

This library was created for Discord4J v2 which is no longer supported or maintained.

Commands4J

An API for making chat commands with Discord4J

Adding Commands4J as a Dependency

repositories {
  maven { url 'https://jitpack.io' }
}

dependencies {
  compile 'com.github.Discord4J-Addons:Commands4J:VERSION'
}

Using Commands4J

Commands4J uses the builder pattern to construct Commands. Here is an example of a simple "ping" commnad:

Command ping = Command.builder()
    .onCalled(ctx -> {
      ctx.getChannel().sendMessage("Pong!");
    })
    .build();

The CommandContext object gives access to information about the context in which the command was executed such as the channel and arguments.

Then, the command must be registered with a CommandRegistry which is the main way to configure and interact with Commands4J. After the commands are added, simply register a CommandListener configured with the registry with Discord4J.

IDiscordClient client = ... // obtained from Discord4J
CommandRegistry registry = new CommandRegistry("!");
registry.register(ping, "ping");
client.getDispatcher().registerListener(new CommandListener(registry));

Limiters

Commands4J uses the concept of "limiters" to limit the scope in which a command can be executed. A limiter is simply a function which takes a CommandContext and returns whether the command can execute. Commands4J provides many default implementations of Limiter, but it is easy to define your own.