[Rock-dev] Roby tutorial on Tasks

[Raul Dominguez]

Hi,

When defining a Task class as explained here: 
http://rock-robotics.org/stable/api/tools/roby/tutorial/tasks.html#task-control-and-monitoring-defining-events

"""
$ irb -rroby/standalone
irb(main):001:0> plan = Roby.plan
=> #<#<Roby::Plan:0x00000001ac28e8>: 
missions=#<ValueSet:0x00000001ac28c0 {}> 
tasks=#<ValueSet:0x00000001ac1b00 {}> events=#<ValueSet:0x00000001ac1ad8 
{}> transactions=#<ValueSet:0x00000001ac25a0 {}>>
irb(main):002:0> source "my_task.rb"
"""

I get the following error:

"""
my_task.rb(main):003:0> class MyTask < Roby::Task
my_task.rb(main):004:1>    event :start do
my_task.rb(main):005:2*       puts "start event called"
my_task.rb(main):006:2>       emit :start
my_task.rb(main):007:2>    end
my_task.rb(main):008:1>    event :controlable do
my_task.rb(main):009:2*       puts "controlable event called"
my_task.rb(main):010:2>       emit :controlable
my_task.rb(main):011:2>    end
my_task.rb(main):012:1>    event :contingent
my_task.rb(main):013:1>
my_task.rb(main):014:1*    on(:start) { puts "start event emitted" }
my_task.rb(main):015:1>    on(:controlable) { puts "controlable event 
emitted" }
my_task.rb(main):016:1>    on(:contingent) { puts "contingent event 
emitted" }
my_task.rb(main):017:1>    on(:failed) { puts "failed event emitted" }
my_task.rb(main):018:1>    on(:stop) { puts "stop event emitted" }
my_task.rb(main):019:1>
my_task.rb(main):020:1*    event :finished, :terminal => true
my_task.rb(main):021:1>    on(:finished) { puts "finished event emitted" }
my_task.rb(main):022:1> end
ArgumentError: #<UnboundMethod: MyTask#event_command_start> does not 
accept to be called with 1 argument(s)
         from my_task.rb:4:in `<class:MyTask>'
         from my_task.rb:3
         from (irb):2
         from /usr/bin/irb:12:in `<main>'
my_task.rb(main):023:0>
=> nil
"""

I guess is an easy question for you guys.


Greetings,
Raúl

-- 
  Raul Dominguez (M.Sc.)
  Space Robotics

  Universität Bremen
  FB 3 - Mathematik und Informatik
  AG Robotik
  Robert-Hooke-Straße 5
  28359 Bremen, Germany

  Tel.:     +49 421 178 45-6617
  Zentrale: +49 421 178 45-6611
  Fax:      +49 421 178 45-4150
  E-Mail:   Raul.Dominguez at uni-bremen.de

  Weitere Informationen: http://www.informatik.uni-bremen.de/robotik