An example of Spade programming language for Bukkit

Code.spade.rb

when :playerJoin do |activity,player|
  # Unlike Ruby, the `?` turns any datatype to a bool, depending on whether it has content
  # False ->
  # # 0, "", false, 0.0, [], {}, nil, undefined
  # True ->
  # # Everything else.
  if player.meta.banned? == true
    player.kick player.meta.banned
    activity.cancel
  else
    activity.done
  end
end

when :chat do |activity,player,message|
  if player.name == "*"
    broadcast "[*] #{message}"
    activity.done
  elsif player.permission.op == true
    broadcast "[#{player.name}] #{message}"
    activity.done
  else
    if message.filter.rude? > 0
      tell p "Your message contains rude words."
      activity.cancel
    else
      broadcast "[#{player.name}] #{message}"
      activity.done
    end
  end
end

when :command do |activity,player,command|
  if command.name == "hello"
    broadcast "Hello, #{player.name}."
  elsif command.name == "zap"
    if player.permission.op == true
      if command.args < 1
        player.tell "Not enough arguments!"
        help "zap"
      else
        target = Player.new(args[0])
        if target.online? == false
          player.tell "#{args[0]} is either offline or has never played on this server before."
        else
          world.spawn :lightning target.x target.y target.z
          target.tell "The gods are angry with you."
        end
      end
    end
  end
end

when :start do
  puts "Activated example plugin."
end
when :ended do
  puts "Deactivated example plugin."
end
when :restart do
  puts "Reactivated example plugin."
end