Re: [pygame] encrypt/decrypt zip/unzip
their reverse engineering, there's no point. This can be carried to absurd extremes, but you should offer new features that make the next release more valuable than reverse engineering. 4 - Offer customization at rates so attractive that they'd rather pay you to build and support the enhancements. [...] About py2exe, it is a really limited obfuscation cause it actually just stores the .pyc byte code files in a .zip archive. It means that you can unzip your .exe file and see what's inside, there's no protection at all. Though, the python byte code files offer a basic protection since you need to use some tools like uncompyle, pyretic or pycdc. I also clear the windows clipboard on every run of the main program loop thus preventing the user from taking screen grabs with print screen. This seems so wrong man, what if the user is trying to copy/paste anything while your program is running on the background? 2014-08-25 23:06 GMT+02:00 Dan Uznanski duznan...@gmail.com: Why bother? The average user won't care, the skilled users will see through your ruse like it's plastic wrap, and the ones who care but aren't that good will just find out what the skilled users did on the internet. The only thing you do by adding obfuscation is make it a little bit more of a pain for others to modify and improve your program, and make it a lot more of a pain for you to test your program. On Mon, Aug 25, 2014 at 4:04 PM, diliup gabadamudalige dili...@gmail.com wrote: Thanks for the responses. Firstly I am a bit amused that everybody assumes that I am writing some kind of game. I never mentioned any game. Is it because of Pygame? :) :) I am using Pygame as my graphic interface because it is easy to display all graphics and music (with some MIDI) using Pygame. Incidentally I am writing a music teaching software. I use maketrans with a code string and then XOR the result using another string and then finally base64 it before writing it to disk. So all files look like - CSVT121rI_OQt%BIc.@lm and even if someone duoble click or change the file ext they can not open the file in anything other than a text file editor. If we keep the worst case scenarios out my majority users would be average computer users and I doubt somone taking the trouble to reverse engineer this software which is absolutely unknown. Maybe they will do so if it gets world famous ( :-) ) but then I will hire a professional team to encrypt it or I will use a dongle protection. But right now I am trying to close the files from prying eyes. When compiled with py2exe all the py files are strung together and one exe file is formed but all the assets remain in the folder with the same names inside the folder where the exe is. So anyone can simply copy the files and the text inside. But this way they have no access as the zip file is encrypted. If they crack that open then all the files are encrypted and the encrypted password is in another py file inside the exe. Isn't this some kind of protection against no protection at all? I also clear the windows clipboard on every run of the main program loop thus preventing the user from taking screen grabs with print screen., These are taking into account THE THE AVERAGE USER. Considering the average user are the precautions I have taken fair? What do you think? On Mon, Aug 25, 2014 at 9:52 PM, Noel Garwick noel.garw...@gmail.com wrote: Diliup, My understanding is that anything you load into memory can be dumped. So if you're just using this to load all game assets at startup, people could extract the assets by duping what the interpreter has loaded into memory (the copies of the unencrypted files). On Mon, Aug 25, 2014 at 11:52 AM, Vincent Michel vxgmic...@gmail.com wrote: the password is obfuscated and saved to a py file I'm curious about this part, how would you do that? Do you plan to distribute only your byte code and hope that no one will reverse it? Also, why do you need a double encryption? If you want to prevent people from browsing your package to find the end screen or whatever, isn't your first encryption enough? Anyway I think it's an interesting question, I mean, how important is it to obfuscate game data. Vincent On Mon, 2014-08-25 at 19:38 +0530, diliup gabadamudalige wrote: Having experimented with various methods to obfuscate image, audio and text files, store them in a zip file pw protect and then retrieving on demand I finally did this. coder= a long string with a lot of characters ( written in a separate py file) strA = XOR(from_disk.read(), coder) str1 = XOR(strA,another_coder)) encryption twice to obfuscate even more. with open(code_to_dir, wb) as to_disk: to_disk.write(str1) then i used win rar to write these files to disk as a pw
Re: [pygame] encrypt/decrypt zip/unzip
Why bother? The average user won't care, the skilled users will see through your ruse like it's plastic wrap, and the ones who care but aren't that good will just find out what the skilled users did on the internet. The only thing you do by adding obfuscation is make it a little bit more of a pain for others to modify and improve your program, and make it a lot more of a pain for you to test your program. On Mon, Aug 25, 2014 at 4:04 PM, diliup gabadamudalige dili...@gmail.com wrote: Thanks for the responses. Firstly I am a bit amused that everybody assumes that I am writing some kind of game. I never mentioned any game. Is it because of Pygame? :) :) I am using Pygame as my graphic interface because it is easy to display all graphics and music (with some MIDI) using Pygame. Incidentally I am writing a music teaching software. I use maketrans with a code string and then XOR the result using another string and then finally base64 it before writing it to disk. So all files look like - CSVT121rI_OQt%BIc.@lm and even if someone duoble click or change the file ext they can not open the file in anything other than a text file editor. If we keep the worst case scenarios out my majority users would be average computer users and I doubt somone taking the trouble to reverse engineer this software which is absolutely unknown. Maybe they will do so if it gets world famous ( :-) ) but then I will hire a professional team to encrypt it or I will use a dongle protection. But right now I am trying to close the files from prying eyes. When compiled with py2exe all the py files are strung together and one exe file is formed but all the assets remain in the folder with the same names inside the folder where the exe is. So anyone can simply copy the files and the text inside. But this way they have no access as the zip file is encrypted. If they crack that open then all the files are encrypted and the encrypted password is in another py file inside the exe. Isn't this some kind of protection against no protection at all? I also clear the windows clipboard on every run of the main program loop thus preventing the user from taking screen grabs with print screen., These are taking into account THE THE AVERAGE USER. Considering the average user are the precautions I have taken fair? What do you think? On Mon, Aug 25, 2014 at 9:52 PM, Noel Garwick noel.garw...@gmail.com wrote: Diliup, My understanding is that anything you load into memory can be dumped. So if you're just using this to load all game assets at startup, people could extract the assets by duping what the interpreter has loaded into memory (the copies of the unencrypted files). On Mon, Aug 25, 2014 at 11:52 AM, Vincent Michel vxgmic...@gmail.com wrote: the password is obfuscated and saved to a py file I'm curious about this part, how would you do that? Do you plan to distribute only your byte code and hope that no one will reverse it? Also, why do you need a double encryption? If you want to prevent people from browsing your package to find the end screen or whatever, isn't your first encryption enough? Anyway I think it's an interesting question, I mean, how important is it to obfuscate game data. Vincent On Mon, 2014-08-25 at 19:38 +0530, diliup gabadamudalige wrote: Having experimented with various methods to obfuscate image, audio and text files, store them in a zip file pw protect and then retrieving on demand I finally did this. coder= a long string with a lot of characters ( written in a separate py file) strA = XOR(from_disk.read(), coder) str1 = XOR(strA,another_coder)) encryption twice to obfuscate even more. with open(code_to_dir, wb) as to_disk: to_disk.write(str1) then i used win rar to write these files to disk as a pw protected zip file with store as the comp. method. the password is obfuscated and saved to a py file Retrieving the files from inside the zip file was the only hitch as the python extract routine took a long time. this was solved by a great package at https://pypi.python.org/pypi/czipfile#downloads retrieval time increase by nearly/more than/almost 200 %. I would like to have your input on the above. Diliup Gabadamudalige http://www.diliupg.com http://soft.diliupg.com/ ** This e-mail is confidential. It may also be legally privileged. If you are not the intended recipient or have received it in error, please delete it and all copies from your system and notify the sender immediately by return e-mail. Any unauthorized reading, reproducing, printing or further dissemination of this e-mail or its contents is strictly prohibited and may be unlawful. Internet communications cannot be guaranteed to be timely, secure, error or virus-free. The sender does not accept liability
Re: [pygame] Importing Graphics
Pulling out graphics from files for older games can be hard - they're often in hand-rolled compressed formats, depend on palette data that isn't present in the same place as the actual images, etc, etc, etc. I can't give proper general advice, because there are so many ways it was done, but if all else fails you may get some mileage out of chopping up screenshots. Once you have images in a more portable format (I highly recommend png because it's lossless and handles all sane situations well), you can use them at your leisure using image.load. And then you have another problem: copyright law. Most games with art you might want to use don't have a Creative Commons or other license you can take advantage of to distribute /their/ art with /your/ game. You'll probably find that rolling your own (simple) art will do you more good, and will teach you more about how games are made so you know what to ask for later when you do have an artist to ask for. On Sat, Oct 6, 2012 at 3:25 PM, Owen Rexian outrex...@gmail.com wrote: there is no image.make_jazzy() method unfortunately, for good graphics you need a good artist. this 2d lighting style is cool though http://www.youtube.com/watch?v=GI63eeaXbWs On 6 October 2012 17:47, Ian Mallett geometr...@gmail.com wrote: On Sat, Oct 6, 2012 at 4:13 AM, shane shanevansh...@yahoo.com wrote: Hi thanks for all the imput, kinda browsed through the beginnings and its reasonably straight forward if you creating simple games such as hangman etc - just need to get to grips with the different meanings - and do a lot of practice but i see the graphics are very basic so how does one do decent graphics - im not talking quake quality but something a bit more believable - like lets say Simcity - and can graphics from shareware etc be imported Do you mean like pygame.image.load(...)?
Re: [pygame] newbie who is lost asking for rescue party
get python 2.7.3 32bit and pygame 1.9.1 built against 2.7. On Thu, Oct 4, 2012 at 2:14 PM, SHANE VAN STRAATEN shanevansh...@yahoo.com wrote: Hi no just downloaded it did not open it as when i was on site saw all these other files pygame-1.9.1.win32-py2.7.msi 3.1MB pygame-1.9.1release.win32-py2.4.exe 3MB pygame-1.9.1release.win32-py2.5.exe 3MB pygame-1.9.1.win32-py2.5.msi 3MB pygame-1.9.1.win32-py2.6.msi 3MB pygame-1.9.2a0.win32-py2.7.msi 6.4MB pygame-1.9.1.win32-py3.1.msi 3MB pygame-1.9.2a0.win32-py3.2.msi 6.4MB (optional) Numeric for windows python2.5 (note: Numeric is old, best to use numpy) http://rene.f0o.com/~rene/stuff/Numeric-24.2.win32-py2.5.exe windows 64bit users note: use the 32bit python with this 32bit pygame. There are some pre release binaries for 64bit windows, and for python 2.7 at http://www.lfd.uci.edu/~gohlke/pythonlibs/#pygame and as i said was advised to use the 2,7 version so thats when i kinda got confused and then there were other files om anothr page that said they had no scource code like the file i downloaded -- so as you have gone through what i must learn and im not looking to make a smash game more rpg and small to start and get expierence what do you suggest if you had to start from the beginning i also got advice to download the latest version but then is it as supported as version 2.7 Shane From: Owen Rexian outrex...@gmail.com To: pygame-users@seul.org Sent: Thursday, October 4, 2012 1:08 AM Subject: Re: [pygame] newbie who is lost asking for rescue party Not 100% sure what the problem is... So you have downloaded the binary, opened it up, and then what? On 4 October 2012 00:05, shane shanevansh...@yahoo.com wrote: Hi totaly a newbie in every sense was told to download 2.7 version but even when i go to instruction page i get lost again please some help i downloaded python-2.7.3 exe (15.5mb) what else do i need and where di i get it because there is a heck of a lot of files that i dont know what they mean or their purpose and it also talks of no scource code? *Windows Binary Installer* This is probably the most popular method of installation. If you are running on windows, it is highly recommended you use this form of installing. The installers come with with nearly everything you need, and have an easy point and click installers. The first thing you will need is an installation of Python. Python binary installers make it easy to get this done. Pygame binaries usually come for the latest 2 releases of Python, so you'll want to be fairly up to date. Once that is in place, you want to download the appropriate windows binary. From the pygame downloads page you can find the .EXE file you need. This will automatically install all of pygame and all the SDL dependencies. The windows binaries have filenames like this; http://www3.telus.net/len_l/pygame-1.8.0release.win32-py2.5.msi;. This would be the installer for pygame version 1.8.0, for Python version 2.5. You shouldn't have trouble finding the correct binary from the Windows section of the download page. http://www.pygame.org/download.shtml. You will also probably want to install the windows documentation and installation package. This will add easy links to the different documentation and games that come with pygame. The installer for this is found next to the other windows binary downloads. The filename looks like this; pygame-docs-1.8.0.exe. And this would install the documentation and examples for pygame-1.8.0 One other thing the windows binaries are missing is the Numeric or numpy Python packages. You can easily install this separately and it will allow you to use the pygame surfarray module. This module is optional, so there is no need to do this. There are binary installers from the Numeric download page. http://sourceforge.net/project/showfiles.php?group_id=1369. A Numeric for Windows python 2.5 can be found on the download page: http://www.pygame.org/download.shtml. Numpy is newer than Numeric, so you should probably use that... however both are not entirely compatible. Instead of numpy you can also use PixelArray, which is built into pygame -- View this message in context: http://pygame-users.25799.n6.nabble.com/newbie-who-is-lost-asking-for-rescue-party-tp209.html Sent from the pygame-users mailing list archive at Nabble.com.
Re: [pygame] Monospaced fonts are meant to be mono-spaced, right?
Are you accounting correctly for non-integer character width? If it's always the same letter /position/ that's giving you trouble, then it's possible that the width of the character is not an integer in that size, and your text renderer may be accounting for that in ways that your own program is not. On Mon, May 14, 2012 at 9:25 AM, Nicholas Seward nicholas.sew...@gmail.com wrote: The letters may be different lengths. However, the letters should be spaced equally. For example,i will be shorter than w but hit and hot should be the same length. On Mon, May 14, 2012 at 5:25 AM, Sam Bull sam.hack...@sent.com wrote: Before I go and file a bug against Ubuntu, can somebody confirm I'm not being stupid. For my input boxes, the cursor position depends on a monospaced font. This means I check the length of a rendered letter (e) using the font, and then set the cursor position as a multiple of this length. This worked fine before, but in Ubuntu 12.04, it no longer seems to be monospaced. Getting the length of the character e on my system gives me 9 pixels, but it seems that some characters, such as h, are 10 pixels, which starts offsetting my cursor position and messing up my input box. The line I use to load the font is: pygame.font.SysFont(FreeMono, Monospace, 16) That should definitely return a monospaced font, right? And, the line used for getting the width is: mono_font.render(e, False, (0,0,0)).get_size()[0] Is this a bug, or am I doing something stupid?
Re: [pygame] [ROOKIE] Best way to manage jump movement
If you want the merest touch of the jump key to cause a full strength jump, just kick up the vertical component of the character's velocity vector (ensuring of course that the character is not already jumping, etc) and apply gravity normally. If you want a longer keypress to give a higher jump, the way I've always heard of is velocity change, plus lowering the character's magnitude of gravity during the keypress. The big big important bit here is that the character has a velocity and gets acceleration applied in his update call. You'll also want is_jumping and is_airborne flags; the former tells you whether you should apply the gravity reduction, the latter whether it should be checking for jump commands. On Fri, Apr 20, 2012 at 4:58 PM, NesKy xavipotr...@gmail.com wrote: Hello everyone, I've been for some days trying to develop a canabalt-like game (http://www.canabalt.com/), saving distances... I've got the way to manage scroll, buildings appearances, distance between them, etc. Where I'm getting stucked is making the jump movement, and I left this for the last thing to do. What I'm trying to do is a basic jump movement where the more time you're pushing the button the more time you're jumping, with a limit of course. The player is always on the same x coordinate, so he only has to change the y in the way we want. So, the way I learned to manage all of this is with a player class and some methods to define actions (jump, prone, animation,...). Well, at this point I'm getting frustrated trying to do this with this tools. The only thing I achieve is jumping with the player MEANWHILE the key is pressed. And here is the thing: I cannot find the way to make the player jump with A TOUCH of a key. Thanks for your time (and sorry for my English! xD)
[pygame] Pygame crashes reliably when clicking away.
I've started building a little pygame program. Unfortunately I've
been having a huge problem: the second time I click out of the window
on another thing that completely obscures the pygame window, using
pygame.event.get() crashes with a segfault.
I'm running Windows XP/32 latest on 2009 mac pro hardware, Python
2.7.2, Pygame 1.9.1.
Here's code:
#---begin code---
import pygame
from time import sleep, time
start = time()
pygame.init()
SCREEN_SIZE = (640,480)
screen = pygame.display.set_mode(SCREEN_SIZE)
while True:
for event in pygame.event.get():
if event.type != pygame.MOUSEMOTION:
print %0.3f % (time() - start), event
if event.type == pygame.QUIT: exit()
sleep(0.01)
# ---end code---
And here's logs of one attempt:
#---begin logs---
D:\vorndaC:\python27\python.exe cheese.py
0.156 Event(17-VideoExpose {})
0.156 Event(1-ActiveEvent {'state': 1, 'gain': 0})
1.344 Event(1-ActiveEvent {'state': 2, 'gain': 0})
5.938 Event(17-VideoExpose {})
5.938 Event(1-ActiveEvent {'state': 6, 'gain': 1})
5.938 Event(5-MouseButtonDown {'button': 1, 'pos': (356, 479)})
7.109 Event(5-MouseButtonDown {'button': 1, 'pos': (356, 479)})
Fatal Python error: (pygame parachute) Segmentation Fault
This application has requested the Runtime to terminate it in an
unusual way.
Please contact the application's support team for more information.
#---end logs---
Re: [pygame] Pygame crashes reliably when clicking away.
After some poking I fixed it. Had to nuke Python /and/ Pygame to do
so, which was no fun, and I'm still disappointed because I have no
idea what actually went wrong.
Dan
On Sat, Mar 17, 2012 at 3:51 PM, Dan Uznanski duznan...@gmail.com wrote:
I've started building a little pygame program. Unfortunately I've
been having a huge problem: the second time I click out of the window
on another thing that completely obscures the pygame window, using
pygame.event.get() crashes with a segfault.
I'm running Windows XP/32 latest on 2009 mac pro hardware, Python
2.7.2, Pygame 1.9.1.
Here's code:
#---begin code---
import pygame
from time import sleep, time
start = time()
pygame.init()
SCREEN_SIZE = (640,480)
screen = pygame.display.set_mode(SCREEN_SIZE)
while True:
for event in pygame.event.get():
if event.type != pygame.MOUSEMOTION:
print %0.3f % (time() - start), event
if event.type == pygame.QUIT: exit()
sleep(0.01)
# ---end code---
And here's logs of one attempt:
#---begin logs---
D:\vorndaC:\python27\python.exe cheese.py
0.156 Event(17-VideoExpose {})
0.156 Event(1-ActiveEvent {'state': 1, 'gain': 0})
1.344 Event(1-ActiveEvent {'state': 2, 'gain': 0})
5.938 Event(17-VideoExpose {})
5.938 Event(1-ActiveEvent {'state': 6, 'gain': 1})
5.938 Event(5-MouseButtonDown {'button': 1, 'pos': (356, 479)})
7.109 Event(5-MouseButtonDown {'button': 1, 'pos': (356, 479)})
Fatal Python error: (pygame parachute) Segmentation Fault
This application has requested the Runtime to terminate it in an
unusual way.
Please contact the application's support team for more information.
#---end logs---
