Highscore

[MaxLindquist]

Hi! I want to make a highscore for a game i am making. How might i do that?

Thanks

[bartonc]

Hi! I want to make a highscore for a game i am making. How might i do that?

Thanks

You might do that many ways. Tell us more about what "make a high score" means (do you mean make a way to remember the top 5 high scores over time?).

[MaxLindquist]

Yes.... I mean.... i want to make my program save the top 10 scores and names in some way....

[bartonc]

Yes.... I mean.... i want to make my program save the top 10 scores and names in some way....

Here, I use a list of tuples. This list can be sorted by score, then pickled to save it to disk. Pickle documentation is in section 3.14.3 of python 2.4 docs.

>>> hiscores = [(300, "John")]
>>> score = 200
>>> player = "Jane"
>>> hiscores.append ((score, player))
>>> print hiscores
[(300, 'John'), (200, 'Jane')]
>>> hiscores.sort()
>>> print hiscores
[(200, 'Jane'), (300, 'John')]


>>> import pickle

>>> scores = open("scores", "w")
>>> pickle.dump(his cores[-10:], scores)
>>> scores.close()

>>> scores = open("scores", "r")
>>> oldscores = pickle.load(sco res)
>>> scores.close()
>>> print oldscores
[(200, 'Jane'), (300, 'John')]
>>>

[MaxLindquist]

Thanks! What does pickle do?

[MaxLindquist]

OK.... i think i get it now... thanks

[MaxLindquist]

How would you do it if you used a lists? Like:
score=list()
name=list()

in some way?

[bartonc]

Thanks! What does pickle do?

Like the name suggests, it preserves you data for later (on the disk).

[bartonc]

How would you do it if you used a lists? Like:
score=list()
name=list()

in some way?

Yes;
these are the same:
score = [] # an empty list
score = list() # list constructor called with no arguments

[MaxLindquist]

Here, I use a list of tuples. This list can be sorted by score, then pickled to save it to disk. Pickle documentation is in section 3.14.3 of python 2.4 docs.

>>> hiscores = [(300, "John")]
>>> score = 200
>>> player = "Jane"
>>> hiscores.append ((score, player))
>>> print hiscores
[(300, 'John'), (200, 'Jane')]
>>> hiscores.sort()
>>> print hiscores
[(200, 'Jane'), (300, 'John')]


>>> import pickle

>>> scores = open("scores", "w")
>>> pickle.dump(his cores[-10:], scores)
>>> scores.close()

>>> scores = open("scores", "r")
>>> oldscores = pickle.load(sco res)
>>> scores.close()
>>> print oldscores
[(200, 'Jane'), (300, 'John')]
>>>

I tried this code... I created at textfile, called "score.txt" next to my program, and i changed score and player to raw_inputs. But if i run it a second time, the information from previous time isn't saved.

[MaxLindquist]

This is the code:

hiscores = [(300, "John")]
score=raw_input ("Score?")
player=raw_inpu t("Name?")
hiscores.append ((score, player))
print hiscores

hiscores.sort()
print hiscores



import pickle

scores=open("sc ores", "w")
pickle.dump(his cores[-10:], scores)
scores.close()

scores = open("scores", "r")
oldscores = pickle.load(sco res)
scores.close()
print oldscores




For some reason this doesn't work.

[bartonc]

This is the code:

For some reason this doesn't work.

Hi, Max. Will you post all of you code please. Only this time, read "Posting Guidelines" in the panel on the right (while you are posting) or in the very first thread on this forum to learn how to USE CODE TAGS so that you post looks like this:

hiscores = [(300, "John")]
score=raw_input("Score?")
player=raw_input("Name?")
hiscores.append((score, player))
print hiscores

hiscores.sort()
print hiscores



import pickle

scores=open("scores", "w")
pickle.dump(hiscores[-10:], scores)
scores.close()

scores = open("scores", "r")
oldscores = pickle.load(scores)
scores.close()
print oldscores

Thank you,
Barton

[MaxLindquist]

Actually that was all of my code... I just want that part of the program to work, then i'm gonna put it in my big program, the game i am making...

But this is my code:

hiscores = [(300, "John")]
score=raw_input("Score?")
player=raw_input("Name?")
hiscores.append((score, player))
print hiscores

hiscores.sort()
print hiscores



import pickle

scores=open("scores", "w")
pickle.dump(hiscores[-10:], scores)
scores.close()

scores = open("scores", "r")
oldscores = pickle.load(scores)
scores.close()
print oldscores

It is almost the same code you wrote. I just changed in the beginning. The problem is that this doesn't work... and i don't understand why...

Thank you very much for you help!

/Max

[bartonc]

Thanks for learning to use code tags! This helps a lot. Now I see what you have done because I only look at code in code tags.
What you need to do AFTER you have your pickle file is READ it first.

import pickle

scores = open("scores", "r")
# READ the pickled data then add to it.
hiscores = pickle.load(scores)
scores.close()
print hiscores

# Use int() to get a number from raw_input()
score=int(raw_input("Score?"))

player=raw_input("Name?")
hiscores.append((score, player))
print hiscores

hiscores.sort()
print hiscores

scores=open("scores", "w")
pickle.dump(hiscores[-10:], scores)
scores.close()

scores = open("scores", "r")
oldscores = pickle.load(scores)
scores.close()
print oldscores

Hope that makes sense,
Barton

Actually that was all of my code... I just want that part of the program to work, then i'm gonna put it in my big program, the game i am making...

But this is my code:

It is almost the same code you wrote. I just changed in the beginning. The problem is that this doesn't work... and i don't understand why...

Thank you very much for you help!

/Max

[bartonc]

I tried this code... I created at textfile, called "score.txt" next to my program, and i changed score and player to raw_inputs. But if i run it a second time, the information from previous time isn't saved.

The file is created by open(). Whatever name is in ("filename", "w") is the file that will be used. So if you want, you can use open("score.txt "), but the data in the file won't make much sense. The "r" and "w" are read and write mode, respectively.