Skip pages and timer for multiple rounds

[Jonas]

Hello all!

Thanks in advance for anyone taking a look at my issue and making suggestions for a better implementation.

See my simplified code snippet at the bottom.

I am setting up a sequential task for a player.

I want to play multiple rounds while having a timer running.

-> e.g. a player has 60s to play as many rounds as he/she can

(1)

In the first round I want to show an intro page that starts the timer. However, in the following rounds I don't want the player to see the Intro page anymore.

• If I use the is_displayed function, the timer is automatically set to 0 once the 2nd rounds starts. Even if there is still time remaining.
  
• Without the is_displayed function the sequential task continues in a new round with the according time remaining, but the player has to click through the Intro page over and over again. As the task is time sensitive I would like to avoid this.
  
• I am guessing the "player.expiry" is set to 0 when I start a round without running the code in the Intro page. However, I have not found a way to work around this.

(2)

At the end of each round there are calculations to be done. I have implemented this in the Results Page. 

• In the running version I dont want the player to see the results page. Once again if I use the is_displayed function no calculations take place.
  
• Is there a way to hide the results page from the player but still do the calculations?

I have the feeling both problems could have a similar solution. I am thankful for any suggestions on how to implement this!

Greetings

Jonas

from time import thread_time

from otree.api import *

doc = """

Your app description

"""

class Constants(BaseConstants):

    name_in_url = 'timer'

    players_per_group = None

    num_rounds = 50

    timer_text = "Time to complete the task:"

class Subsession(BaseSubsession):

    pass

class Group(BaseGroup):

    pass

class Player(BasePlayer):

    startTime = models.FloatField(initial=0)

    timeLeft = models.FloatField(initial=0)

    expiry = models.FloatField(initial=60)

#FUNCTIONS

def time_is_displayed(player: Player):

    import time

    return player.expiry - time.time() > 0

def get_timeout_seconds(player: Player):

    import time

    return player.expiry - time.time()

  

#PAGES

class Intro(Page):

#After the 1st round I don't want to 

#show the Intro Page anymore, but

#if I use the following 3 lines of code 

#in the Intro Page the remaining time 

#is set to 0 once I start the 2nd round

    @staticmethod

    def is_displayed(player):

        return player.round_number == 1

    

    @staticmethod

    def before_next_page(player: Player, timeout_happened):

        import time

        prev_player = player.in_round(1)

        player.startTime = time.time()

        player.expiry = prev_player.startTime + 60

class Input_from_Player(Page):

    @staticmethod

    def is_displayed(player):

        return get_timeout_seconds(player) > 3

    time_is_displayed = time_is_displayed

    get_timeout_seconds = get_timeout_seconds

    timer_text = Constants.timer_text

    #...

    #Player has to give an input

    #on which basis a calculation

    #is done on the page "Results"

    #...

class Results(Page):

    @staticmethod

    def vars_for_template(player: Player):

        sum = 0

            #...

            #here, a calulation takes place,

            #that needs to be done at the

            #end of every round

            #

            #However, the page must not be 

            #shown to the player

            #...

page_sequence = [

    Intro, 

    Input_from_Player, 

    Results

    ]

[Chris @ oTree]

There is an example in otree-snippets showing how to do a multi-page timeout here: https://www.otreehub.com/projects/?featured=1

(1) You should set the expiry on the participant, not the player. since the participant lasts across all rounds, whereas each round has a separate player object: https://otree.readthedocs.io/en/latest/conceptual_overview.html#participant

and then you can skip that page in the following rounds

(2) put that code in before_next_page in  Input_from_Player

by the way, your  time_is_displayed function will never be used. If you want to add it to a class, you need to assign it to a known attribute, like this:

class MyPage(Page):

    is_displayed = time_is_displayed

[Jonas]

Hello Chris,

thank you very much for your insight!

I was able to fix both issues.

Greetings

Jonas