如何在 python 中为基于文本的冒险游戏创建保存系统？

Question

I'm new to programming and was trying to create a text based adventure game. I want to implement a saving system where players are able to save anytime during the game, and continue the story from where they left off. This would also have to save important relevant variables. I have thought about creating a save function like this:

 def save():
    pickle.dump(race,open(r'C:\Users\%username%\Desktop\test\race.dat','wb'))
    print("Saved!")
    return

This would work for variables that will exist throughout the story permanently, like gold, health etc, but this doesn't work for progress through the story. If I want the player to be able to continue the story where they left off how could I do that? Thankyou!

By progress through the story I mean something like this,:

    import pickle
import os
#defining save, add any variables to this that you want to save following the same format
def save():
    pickle.dump(race,open(r'C:\Users\%username%\Desktop\test\race.dat','wb'))
    print("Saved!")
    return
#checking if a save file already exists
race_exist=os.path.isfile(r'C:\Users\%username%\Desktop\test\race.dat')
#if the save file exists, start from here
if race_exist==True:
    race=pickle.load(open(r'C:\Users\%username%\Desktop\test\race.dat','rb'))
    if race=='human':
        direction=input("You arrive at a crossroads during your travel, would you like to go left or right")
        if direction=='save':
            save()
    else:print('someone stabbed you because theyre racist.')
#if save file does not exist, start from here:
elif race_exist==False:
    race=input("Are you an orc or human?")
    pickle.dump(race,open(r'C:\Users\%username%\Desktop\test\race.dat','wb'))
    if race=='orc':
        print("People dislike orcs, you get stabbed during your sleep and die!")
    elif race=='human':
        direction=input("You arrive at a crossroads during your travel, would you like to go left or right")
        if direction=='save':
            save()

here progress throughout the story is like, them coming to crossroads, deciding where to go etc, For example, if the player decides to go left, then saves the game, When he comes back I want him to be able to continue the story from where he left off (going left on the crossroads) rather than have to start all the way back choosing his race and direction again. Thank you!

Answer 1

A dictionary would be a good thing to use.

You can create one like so.

events = {
    "first_crossing": false // choice made at first crossing
}

Next, check the variable for the data.

        direction = events["first_crossing"]
        if !direction: # if direction has not been chosen
            direction=input("You arrive at a crossroads during your travel, would you like to go left or right")

Then, update the event if the value changes.

events["first_direction"] = direction

There are many types of data you could store this way, for example.

events = {
    "chapter1": {
        "completed_tutorial1": false,
        "completed_event1": fasle,
        ...
    },
   ...
}

Make sure to save this variable.