The reason I want to do it gradually is that I cant be sure that the script ever terminates or has syntax errors. Would that not be a problem in a turn based setup?
2012/7/23 Keith Rome <r...@wintellect.com> > You may want to look into leveraging the sys.settrace() feature of > Python for controlling line-by-line execution. This API allows you to > install a profiling function that gets invoked for every frame of script > code that is executed. In your profiling function, you could compute the > amount of memory being used by variables within the ScriptScope, and halt > execution if you need to. Just be careful about what you do in your > profiling function, as it will be called extremely often by the runtime.** > ** > > ** ** > > http://docs.python.org/library/sys.html#sys.settrace**** > > ** ** > > ** ** > > The reason you are seeing variant results is probably due to how you have > implemented multithreading. The IronPython runtime is mostly thread-safe > (as long as you don’t use libraries that make use of mutable objects, and > as long as you import all libraries used at least once prior to forking > threads). But your code must also be thread-safe as well. From your > descriptions of your game engine, it sounds like your game engine is not > designed to be thread-safe so I would strongly recommend avoiding > multithreading as a means of providing resource sharing. It is very > difficult to write 100% thread-safe code, and nothing will stop people from > writing unsafe scripts in your game.**** > > ** ** > > Instead, I would suggest implementing your game engine as a turn-based > system. For each turn, the script for each character is executed > completely. This will allow you to cycle through all characters one turn at > a time, equally, and will also eliminate the problem of having variant > outcomes since the program will become deterministic.**** > > ** ** > > ** ** > > ** ** > > *Keith Rome* > > *Senior Consultant and Architect* > > MCPD-EAD, MCSD, MCDBA, MCTS-WPF, MCTS-TFS, MCTS-WSS**** > > Wintellect | 770.617.4016 | kr...@wintellect.com <r...@wintellect.com>**** > > www.wintellect.com**** > > ** ** > > *From:* ironpython-users-bounces+rome=wintellect....@python.org [mailto: > ironpython-users-bounces+rome=wintellect....@python.org] *On Behalf Of *Jesper > Taxbøl > *Sent:* Monday, July 23, 2012 11:05 AM > *To:* Kevin Hazzard > *Cc:* ironpython-users@python.org > *Subject:* Re: [Ironpython-users] Gradually executing a python script**** > > ** ** > > Would that allow me to step gradually through a loop?**** > > ** ** > > like:**** > > ** ** > > x = 0**** > > while x < 10:**** > > dostuff()**** > > x=x+1**** > > while x > 0:**** > > dootherstuff()**** > > x=x-1**** > > ** ** > > ** ** > > ** ** > > 2012/7/23 Kevin Hazzard <wkhazz...@gmail.com>**** > > Why don't you use a scripting host and inject commands into a ScriptEngine > reusing a ScriptScope as you need to execute them?**** > > **** > > Kevin**** > > On Mon, Jul 23, 2012 at 5:31 AM, Jesper Taxbøl <jes...@taxboel.dk> wrote:* > *** > > Hi,**** > > ** ** > > I am not that familiar with Ironpython yet, but I have a question that I > hope you can help me answer.**** > > ** ** > > I am working on a programming-game where I will allow users to do some > simple python scripting against a simple API that I will control a game > character. Instructions like move and shoot etc, alongside some simple > sense functions that return info on the game world. **** > > ** ** > > My current prototype creates an ironpython engine for each game character > and executes the script in a thread by itself, which sort of works. But I > have the problem that the outcome of executing the game gives different > results every time. Therefore I would like to ask the question:**** > > ** ** > > Is it possible to execute a script inside the Ironpython engine gradually? > **** > > ** ** > > I imagine that I could update a list of engines with a tick(int cycles) > and get a fair sharing of resources between engines and ensure the same > result every time.**** > > ** ** > > Kind regards **** > > ** ** > > Tax**** > > ** ** > > ** ** > > P.S:**** > > As this is a programming game I would also like to be able to limit the > available memory each script is using. Is there a way to limit this, so a > script like this would be killed.**** > > ** ** > > x = 0**** > > v = {}**** > > while True:**** > > v[x]=x**** > > x= x + 1**** > > ** ** > > ** ** > > ** ** > > _______________________________________________ > Ironpython-users mailing list > Ironpython-users@python.org > http://mail.python.org/mailman/listinfo/ironpython-users**** > > > > > -- > *W. Kevin Hazzard***** > > Consultant, Author, Teacher, Microsoft MVP**** > > (804) 928-3444**** > > book <http://manning.com/hazzard> | > mvp<https://mvp.support.microsoft.com/profile/Kevin.Hazzard>| > twitter <http://twitter.com/#%21/KevinHazzard> | > facebook<http://www.facebook.com/wkhazzard>| > linkedin <http://www.linkedin.com/in/kevinhazzard> | > captech<http://captechconsulting.com> > **** > > ** ** > > ** ** >
_______________________________________________ Ironpython-users mailing list Ironpython-users@python.org http://mail.python.org/mailman/listinfo/ironpython-users
