itch.io

something like this?

# store this file as e.g. loadcorrections.rpy in the game/ directory
# I only user the special label after_load (https://www.renpy.org/doc/html/label.html#special-labels) for the examples
# as this one in nicely encapsulated with a specific trigger condition: it is run once when a saved game is loaded
# add it to the existing after_load in script.rpy:161 with e.g. "call variable_check_examples"
# some of the examples will introduce variables prefixed with gry__, they will pollute the saves you are using to play
# around but should not break anything, even after removing the script from your dev build
# this PoC is based on itch's public version 0.2.3.14
label variable_check_examples:
    # simple example, as minimalistic as possible, to show the usage
    # it uses one of the early variables in the game, try it with loading a game safed before and after 'label s2e1satevtexts' happened
    if hasattr(renpy.store, 'sfpts'):
        "You texted with Saffryn and she gave you [sfpts] stars."
    else:
        "Not even played until the first evening? Or ignored all texts?"
    # more conplex, using again the variable above
    # assumption: later on you need to know which texts from Saffryn the player read 
    # but you cannot decide this directly as the text trigger variable (sftxt) is reused (set to true again in 'label s2e2eve')
    # here you can combine the state of more than one variable to pinpoint the save game progress
    # you added the missing variables to the normal game flow scripts ("default gry__sf_1st_text_read = False", in the fitting label "$ gry__sf_1st_text_read = True")
    # but you need to fix it in existing saves, too
    if not hasattr(renpy.store, 'sftxt'):
        "S2E1/S2E1.rpy:570, do nothing"
    else:
        "at least reached the texting label of the first evening"
        if hasattr(renpy.store, 'sfpts'):
            "the first text from Saffryn was not ignored"
            "setting the correct value for the tracking variable gry__sf_1st_text_read"
            $ gry__sf_1st_text_read = True
    # assumption: you need to know if the player tried to enter the book nine times and the actual script reads now (S2E1/S2E1.rpy starting at 484):
    ##
    #    "Text Gillie":
    #        default gry__little_shit_barely_missed = False
    #        if s2retries == 9:
    #            $ gry__little_shit_barely_missed = True
    #        #Aurum ponders for a minute while sitting on the chair he was just thrown into..again.
    #        scene s2e1read19
    #        stop music fadeout 3.0
    #        "This isn't working... but I have a feeling that I'm not really in any mortal danger with her."
    ##
    if not hasattr(renpy.store, 'gry__little_shit_barely_missed'): # just to be sure that the variable _is_ set
        default gry__little_shit_barely_missed = False
    if s2retries == 9: # this variable is always set, already initialised with 'default s2retries = 2'
        $ gry__little_shit_barely_missed = True
    # and one more, here you had for whatever reason to retcon even more and the player has to decide if something happened
    # again fixed in the fixed release within the game flow but you need to set the correct values in existing saves
    # to nag the player only once and only in unpatched save games you need to add another tracking variable.
    # I used 'label s2e2firstpatrol' as example, in the corrected release you have something like
    ##
    #    s "We trust you can remain professional."
    #    s "You can, can't you?"
    #    # retcon starts
    #    default gry__mc_professional = False
    #    menu:
    #        "Yes":
    #            $ gry__mc_professional = True
    #            $ gry__mc_professional_loadcorrection_tracker = True # note: no default!
    #        "I'll try my best":
    #            $ gry__mc_professional = False # redundant actually, but whatever
    #            $ gry__mc_professional_loadcorrection_tracker = True # note: no default!
    #    # retcon ends, remainder of the original scene
    #    # [..]
    #    $ mainquest = 4
    #    # [..]
    ##
    # now you'll only have to ask the player once in after_load
    if mainquest >= 4 and not hasattr(renpy.store, 'gry__mc_professional_loadcorrection_tracker'):
        "Serafina asked you if you can remain professional around half-naked security members."
        menu:
            "You replied"
            "Yes":
                $ gry__mc_professional = True
                $ gry__mc_professional_loadcorrection_tracker = True
            "I'll try my best":
                $ gry__mc_professional = False
                $ gry__mc_professional_loadcorrection_tracker = True
    return