Update all plugins to conform to Rubocop.

data/plugins/player-action/action.rb

@@ -0,0 +1,61 @@
+require 'java'
+
+java_import 'org.apollo.game.message.impl.SetPlayerActionMessage'
+java_import 'org.apollo.game.model.entity.Player'
+
+# A right-click action for a Player.
+class PlayerAction
+  attr_reader :slot, :primary, :name
+
+  def initialize(slot, primary, name)
+    index = [:first, :second, :third, :fourth, :fifth].find_index(slot)
+    fail "Unsupported action slot #{slot}." if index.nil?
+
+    @slot = index
+    @primary = primary
+    @name = name
+  end
+
+end
+
+ATTACK_ACTION = PlayerAction.new(:third, true, 'Attack')
+CHALLENGE_ACTION = PlayerAction.new(:third, true, 'Challenge')
+TRADE_ACTION = PlayerAction.new(:fourth, true, 'Trade with')
+FOLLOW_ACTION = PlayerAction.new(:fifth, true, 'Follow')
+
+# Shows multiple context menu action for the specified player
+def show_actions(player, *actions)
+  fail 'Must specify at least one action.' if actions.nil?
+
+  actions.each do |action|
+    player.add_action(action)
+    player.send(SetPlayerActionMessage.new(action.name, action.slot, action.primary))
+  end
+end
+
+# Shows a single context menu action for the specified player
+def show_action(player, action)
+  show_actions(player, action)
+end
+
+# Hides a context menu action for the specified player
+def hide_action(player, action)
+  show_action(player, PlayerAction.new(action.slot, action.primary, 'null'))
+end
+
+# Monkey-patch Player to provide action utility methods.
+class Player
+
+  def actions
+    @actions ||= {}
+  end
+
+  def add_action(action)
+    actions[action.slot] = action.name
+  end
+
+  def action?(action)
+    actions[action.slot] == action.name
+  end
+
+end