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  • Managing game objects/components

    - by Xeon06
    Good day everyone, By far the biggest problem that has always dawned on my when programming games is how to structure my code. It just becomes an incredible mess after a while. The reason for that is because I have no idea how different classes should interact with each other. Let's have an example. Say I have a class Player, a class PlayerInput and a class Map. The player class contains information as to the location of the player, whereas the player input class handles changing that location, but by first making sure it's within a walkable area from the map class. How to structure this? My usual approach is to pass those components as parameters in the constructors of the parameters that need them, like so: var map = new Map(); var player = new Player(); var input = new PlayerInput(player, map); The problem with that is that it quickly gets messy, when you add new components you have to go through your constructors and update them, and it doesn't work well if you have mirroring references: var physics = new Physics(input); //Oops, doesn't work var input = new Input(physics); So, how do you guys usually manage this? Thanks.

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  • How can I speed up boot on one of my machines?

    - by Korneel Bouman
    I have a Gateway all in one machine (2 gig Intel Core 2 Duo T7250 dual core processor, 2 gig RAM - full specs) on which I installed 10.10. Once it has booted it's fine, but it takes forever to boot. This is what happens: 1. Boot starts with cursor flashing for about 10-15 seconds 2. Cursor disappears for 1.5 - 2 minutes 3. Cursor reappears, blinks a few seconds more, boot finishes in another 10 seconds 4. Login screen I have another machine with marginal better specs that boots up in no time (basically the above minus the two minute delay). Things I've done: enabled verbose mode for grub nothing is showing until after 2 minute pause. checked syslog last message before pause is a message from alsa saying the process is already running (or something similar... going from memory here...) It could be something sound related as the built in speakers are not working (sound card is recognized though and headphones work). Anyway, it's not the end of the world, but it's annoying and I'd like to know what's going on... Many thanks, and let me know if more info is needed.

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  • It is not quantifiably better

    - by MarkPearl
    An interesting statement I have heard recently in one of the organizations that I have been working with is that some of the agile processes that we are implementing are not quanitfiably better than the traditional processes they had before. This seemed to be the motivation for not moving the new process to the rest of the organization or expanding it. They would say, “the team seems to be happier than they were before but the improvement is not quanitifiable and until we can quantify it on paper we cannot make any further changes”. Up till recently I thought this was a problem until it dawned on me that their existing system was not being quantified, meaning even if I managed to quantify what we were doing (which I can), what would we be comparing it to? An appropriate response to someone when they give this reasoning is - "That's a very good point, let's go over the quantifiable attributes of your existing processes and see if we can get some common metric that we can compare them on?" If they then are able to produce some quantifiable metrics, you win because you now have something to compare it to, and if they don't then you can politely point the logic of that out as well.

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  • USB 3 to Gigabit Ethernet adapters: where are they?

    - by intuited
    I'm looking for an adapter that will let me use a USB 3 port as a Gigabit Ethernet port. This is proving surprisingly hard to find! Is there some reason why this product is either unavailable or very obscure? Is there an online shop (US/Canada) where I can buy such an item? Newegg, TigerDirect, NCIX, etc. do not seem to carry such an item. I find this surprising since it will provide at least double the bandwidth (possibly quadruple) compared to a USB 2 Ethernet adapter.

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  • What's is the point of PImpl pattern while we can use interface for same purpose in C++?

    - by ZijingWu
    I see a lot of source code which using PIMPL idiom in C++. I assume Its purposes are hidden the private data/type/implementation, so it can resolve dependence, and then reduce compile time and header include issue. But interface class in C++ also have this capability, it can also used to hidden data/type and implementation. And to hidden let the caller just see the interface when create object, we can add an factory method in it declaration in interface header. The comparison is: Cost: The interface way cost is lower, because you doesn't even need to repeat the public wrapper function implementation void Bar::doWork() { return m_impl->doWork(); }, you just need to define the signature in the interface. Well understand: The interface technology is more well understand by every C++ developer. Performance: Interface way performance not worse than PIMPL idiom, both an extra memory access. I assume the performance is same. Following is the pseudocode code to illustrate my question: // Forward declaration can help you avoid include BarImpl header, and those included in BarImpl header. class BarImpl; class Bar { public: // public functions void doWork(); private: // You doesn't need to compile Bar.cpp after change the implementation in BarImpl.cpp BarImpl* m_impl; }; The same purpose can be implement using interface: // Bar.h class IBar { public: virtual ~IBar(){} // public functions virtual void doWork() = 0; }; // to only expose the interface instead of class name to caller IBar* createObject(); So what's the point of PIMPL?

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  • copy list of video file names to text file along with their runtime?

    - by Adam Johnston
    Copy list of file names to text file? I am linking the above page because of its relevance to my question. Is there anything similar that can be done to output a 'plain' looking text file (or xml or csv file) with basically the same data that the following cmd prompt produces: dir > c:\list.txt However only difference I need is the runtime of any and all video files included in the outputted file. Can this easily be done? Please let me know whether this can be done in the python terminal as well since I am familiar with that was well as Microsoft's dos prompt. Thank you so very much.

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  • Best method to implement a filtered search

    - by j0N45
    I would like to ask you, your opinion when it comes to implement a filtered search form. Let's imagine the following case: 1 Big table with lots of columns It might be important to say that this SQL Server You need to implement a form to search data in this table, and in this form you'll have several check boxes that allow you to costumize this search. Now my question here is which one of the following should be the best way to implement the search? Create a stored procedure with a query inside. This stored procedure will check if the parameters are given by the application and in the case they are not given a wildcard will be putted in the query. Create a dynamic query, that is built accordingly to what is given by the application. I am asking this because I know that SQL Server creates an execution plan when the stored procedure is created, in order to optimize its performance, however by creating a dynamic query inside of the stored procedure will we sacrifice the optimization gained by the execution plan? Please tell me what would be the best approach in your oppinion.

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  • Alias one set of Subdomains to another

    - by Schneems
    I have to domains that I want to effectively mirror one another on select subdomains. Let's say they are pirates.com and ninjas.com and i want ninjas to mirror the content on pirates. When I visit foo.ninjas.com I want to see the content on foo.pirates.com. Due to app restrictions I need to do this in DNS for an undefined number of subdomains. I was under the impression i could do this with a CNAME, but it appears that setting a CNAME for * subdomain of the ninjas.com domain to point to pirates.com will make any subdomain of ninjas.com point at pirates.com instead of the associated subdomain. I.e. foo.ninjas.com would reference pirates.com instead of foo.pirates.com. Is there a way to do this using DNS? Am I missing something basic?

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  • Did you know documentation is built-in to usp_ssiscatalog?

    - by jamiet
    I am still working apace on updates to my open source project SSISReportingPack, specifically I am working on improvements to usp_ssiscatalog which is a stored procedure that eases the querying and exploration of the data in the SSIS Catalog. In this blog post I want to share a titbit of information about usp_ssiscatalog, that all the actions that you can take when you execute usp_ssiscatalog are documented within the stored procedure itself. For example if you simply execute EXEC usp_ssiscatalog @action='exec' in SSMS then switch over to the messages tab you will see some information about the action: OK, that’s kinda cool. But what if you only want to see the documentation and don’t actually want any action to take place. Well you can do that too using the @show_docs_only parameter like so: EXEC dbo.usp_ssiscatalog @a='exec',@show_docs_only=1; That will only show the documentation. Wanna read all of the documentation? That’s simply: EXEC dbo.usp_ssiscatalog @a='exec',@show_docs_only=1; EXEC dbo.usp_ssiscatalog @a='execs',@show_docs_only=1; EXEC dbo.usp_ssiscatalog @a='configure',@show_docs_only=1; EXEC dbo.usp_ssiscatalog @a='exec_created',@show_docs_only=1; EXEC dbo.usp_ssiscatalog @a='exec_running',@show_docs_only=1; EXEC dbo.usp_ssiscatalog @a='exec_canceled',@show_docs_only=1; EXEC dbo.usp_ssiscatalog @a='exec_failed',@show_docs_only=1; EXEC dbo.usp_ssiscatalog @a='exec_pending',@show_docs_only=1; EXEC dbo.usp_ssiscatalog @a='exec_ended_unexpectedly',@show_docs_only=1; EXEC dbo.usp_ssiscatalog @a='exec_succeeded',@show_docs_only=1; EXEC dbo.usp_ssiscatalog @a='exec_stopping',@show_docs_only=1; EXEC dbo.usp_ssiscatalog @a='exec_completed',@show_docs_only=1; I hope that comes in useful for you sometime. Have fun exploring the documentation on usp_ssiscatalog. If you think the documentation can be improved please do let me know. @jamiet

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  • phpmyadmin or other mysql gui - edit whole table from one screen

    - by lorem
    Let's say I have table in database. I'd like to be able to view all data from this table and be able to edit every field from single screen. I tried to do this in phpmyadmin but I'm not sure how... I can see all data but I have to click edit on single field and then I'm sent to next screen, can't really edit everything at once. How do I do this in phpmyadmin or other mysql gui? I'm on Linux, my server too. I'd like each field in table to be editable text field - maybe this will show better what I'm searching for.

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  • When computer turns on: keyboard/mouse/monitor don't work?

    - by dave
    the computer is barely good,at least i think..features Intel core 2 4 GB ram Nvidia Radeon 9600 512 mb Gigabite motherboad (the others i can't remember).. Used this computer for 3 years with no problem...The problem started one day after while it froze everything, then I shut down with removing the electricity power. A few hours later, I tried to log in to the computer but nothing moved. Nor keyboard nor mouse nor monitor worked, I was thinking that should be a delay so I left it some time. After a minute it turned off without my help around 30 seconds then it turned on automatically, but was the same problem like before and it goes again and again...any suggestions? If more info/specs required, let me know.

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  • Windows 7 system CPU bogged by windows services, no explanation

    - by Alex
    I'm looking at a laptop for a colleague which is running terribly slow. A quick look showed that the CPU was 100% used by 2-3 SVCHost processes, which off course doesn't tell much since those are just 'cover' processes with services running underneath them. So I fired up process explorer in hopes of finding a shady rogue service which was bogging the system, but to my suprise I found genuine MS Windows processes (or at least damn-good disguised ones) are bogging down the system: dnscache (DNS Client) IKEEXT (IKE and AuthIP IPSec Keyring modules) iphlpsvc (IP Helper) Seen separately, these processes might seem odd to be using a lot of CPU, but taking a step back one can conclude that all three services are quite closely related to networking. I've tried running: netsh int ip reset log.txt which has helped me save bizarre network-related problems in the past, but this didn't help Off course I though about a virus, but both MS Security Essentials as well as malwarebytes (let both run a full scan).

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  • Learn as much as possible about the setup behind a website.

    - by carrier
    Let's say I'm in the process of planning the setup of a website. I study similar sites that offer similar services or might receive similar traffic model. Is there a way to determine a bit the kind of setup, software and/or hardware. Some things are obvious. If I see .php or .jsp then I already know a bit. But any ideas on how to decipher more? Maybe where the site is hosted, hardware, platforms...

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  • Matching users based on a series of questions

    - by SeanWM
    I'm trying to figure out a way to match users based on specific personality traits. Each trait will have its own category. I figure in my user table I'll add a column for each category: id name cat1 cat2 cat3 1 Sean ? ? ? 2 Other ? ? ? Let's say I ask each user 3 questions in each category. For each question, you can answer one of the following: No, Maybe, Yes How would I calculate one number based off the answers in those 3 questions that would hold a value I can compare other users to? I was thinking having some sort of weight. Like: No -> 0 Maybe -> 1 Yes -> 2 Then doing some sort of meaningful calculation. I want to end up with something like this so I can query the users and find who matches close: id name cat1 cat2 cat3 1 Sean 4 5 1 2 Other 1 2 5 In the situation above, the users don't really match. I'd want to match with someone with a +1 or -1 of my score in each category. I'm not a math guy so I'm just looking for some ideas to get me started.

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  • Thunderbird: "Could not initialize the application's security component" [closed]

    - by user unknown
    In Thunderbird, on startup, I get the error message: "Could not initialize the application's security component" The message continues to check permissions of the profile, and free disk space. df -h shows, that I have 19G free disk space. find . -not -perm -644 -not -perm -600 -ls shows: No file without rw-permissions for me. Before the error occured, thunderbird worked well. But I changed my main mail-account. I had two, let's call them A and B, and used mainly A, but now I wanted to deaktivate it, and receive and send automatically via the second. I Had problems moving the filters from inbox A to inbox B (missing copy-functionality). In the web, I found (mollazine) hints, to move key3.db, cert8.db and secmode.db out of the way, but it didn't work for me. Another hint was to uninstall Quickcam(?. sic!), but I don't have Quickcam. A third to recreate the profile, but I have subdirectories, filters, addressbook, groups - mails back to the year 2003. I don't want to risk the loss of data. The whole errormessage is: Could not initialize the application's security component. The most likely cause is problems with files in your application's profile directory. Please check that this directory has no read/write restrictions and your hard disk is not full or close to full. It is recommended that you exit the application and fix the problem. If you continue to use this session, you might see incorrect application behaviour when accessing security features. When I open the error-console, it is empty.

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  • Linux command line based spam checker?

    - by anonymous-one
    Does a command line based spam checker exist? We have created a mailbox at a 3rd party, and unfortunately decided on spam checking 'disabled' in the initial setup. There is no way to re-enable spam checking, the mailbox must be delete (and thus all contents lost) and re-created. Does anything exist where we can pump in either: A) Subject + from + to + body + all other fields. OR B) Raw message dump (headers + body). And the command line will let us know weather the email is possibly spam? Thanks.

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  • How to build a "traffic AI"?

    - by Lunikon
    A project I am working on right now features a lot of "traffic" in the sense of cars moving along roads, aircraft moving aroun an apron etc. As of now the available paths are precalculated, so nodes are generated automatically for crossings which themselves are interconnected by edges. When a character/agent spawns into the world it starts at some node and finds a path to a target node by means of a simply A* algorithm. The agent follows the path and ultimately reaches its destination. No problem so far. Now I need to enable the agents to avoid collisions and to handle complex traffic situations. Since I'm new to the field of AI I looked up several papers/articles on steering behavior but found them to be too low-level. My problem consists less of the actual collision avoidance (which is rather simple in this case because the agents follow strictly defined paths) but of situations like one agent leaving a dead-end while another one wants to enter exactly the same one. Or two agents meeting at a bottleneck which only allows one agent to pass at a time but both need to pass it (according to the optimal route found before) and they need to find a way to let the other one pass first. So basically the main aspect of the problem would be predicting traffic movement to avoid dead-locks. Difficult to describe, but I guess you get what I mean. Do you have any recommendations for me on where to start looking? Any papers, sample projects or similar things that could get me started? I appreciate your help!

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  • Tweaking "Most visited sites" button in Firefox

    - by Mehper C. Palavuzlar
    It is sometimes practical to use "Most Visited" sites which stands on the left hand side of Firefox window. When I click on it, I can see maximum 10 URLs. At that point, I have 2 questions: Is it possible to increase the number of maximum most visited sites (say, 30)? Let's say example.com is one of the most visited domains. In the most visited list, there are other pages from this domain, like example.com/intro, example.com/info, example.com/help etc. So those sub-addresses are also in the list, but I just want to see max 1 (or maybe 2) pages from the same domain in the list. Is it possible to arrange the list this way?

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  • Custom CSV (.csv) filter for OpenOffice.org or LibreOffice?

    - by anon
    Is it possible to create a some kind of 'custom CSV filter' for OpenOffice.org or LibreOffice spreadsheet program. What I need is to have the program to use predefined CSV settings for loading and saving when I open, let's say file named 'somefile.myext'. Also I would need the loaded data to be placed in a prestyled spreadsheet. In this particular case, I would need the CSV settings to have tab as a field delimiter and no text delimiter at all. Prestyled spreadsheet would contain Blue gray coloring for every odd row (achieved with conditional formatting formula), some font styling and probably some column width definitions.

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  • Network connection via USB

    - by Fco
    Can I get my Nexus One/Android on my local network over USB instead of WiFi and browse to my computer's IP address, the one to which the phone would be connected to, via USB? For instance, let's say my computer has an IP address 100.1.1.1 and when I go to it from the computer I would go to my localhost and see a website I've set up locally in the computer. Then, I connect my phone to that computer via USB. Can I then go to 100.1.1.1 from the browser and see the same website? All this through the USB, no WiFi?

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  • Own mediawiki/wikipedia naming convention for pages

    - by Andy M
    I recently installed a mediawiki at home and I'm looking for a way to name pages. Let's say I have the following structure : Main - Dev - C# - Tips Main - Cooking - Mexixan Cooking - Tips Main - Annoying my girlfriend - Tips Each final page is a different Tips page. Naming them only "tips" won't work because I need three different pages. Now, I could name each of my tips page with its "path" (ex: main_cooking_mexican_cooking_tips) but it looks cumbersome and the problem is that, whenever I'll change the structure of my mediawiki, some pages will need to change their name in order to be corrects. Does it exist some convention to follow regarding this ? Thanks for your help !

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  • Ubuntu 12.04 fresh install wont boot up

    - by user147220
    im running ubuntu 12.04 and it refuses to boot up. the screen will come on for a second, the mosue will appear, then itll go black again all inside about 3 seconds. i let it just do that for a while and eventually a window popped up saying i had a display issue. I didn't have a mouse but there was a button saying "ok" at the bottom that i couldnt click on. i hit enter, got through that screen, now im looking at another that says "What would you like to do?" - run in low-graphics mode for just one session - reconfigure graphics - troubleshoot the error - exit to console login then two buttons, cancel, and ok. I dont have a mouse and its not letting me navigate between these options with tab. firstly, if i make it through these windows will it get me into the computer so i can try and fix whats going on? also, whats going on here? also, how can i click on these buttons without the use of tab or a mouse?

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  • Store system passwords with easy and secure access

    - by CodeShining
    I'm having to handle several VPS/services and I always set passwords to be different and random. What kind of storage do you suggest to keep these passwords safe and let me access them easily? These passwords are used for services like databases, webserver user and so on that run customers' services, so it's really important to keep them in a safe place and strong. I'm actually storing them in a google drive spreadsheet file, describing user, password, role, service. Do you know of better solutions? I'd like to keep them on a remote service to make sure I don't have to make backup copies (in case my hdd would fail somehow). I do work on *nix platforms (so windows specific solutions are not a choice here).

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  • Should Starting a Quick Game via Google Game Services be Iterated?

    - by user46727
    I have been following this tutorial for Google Play Game Services. I am a little unclear as to if the room matching algorithm should be looped or not. Can I just initialize this process once and let it time out? Or by iterating through it is it somehow rechecking it? If anyone had the approximate timeout that would be great as well. The problem stems from the fact that even when both phones are signing into the Game Services (at virtually the same time, my friend and I logged in), the room is not registering multiple people. One time my friend's phone even entered the game map, showing that he somehow was able to progress from the room initialization process. Relevant screen update methods which I am starting this matchmaking process: @Override public void update(float deltaTime) { game.options.updateTiles(); if(!isInitiated) { startQuickGame(); } } private void startQuickGame() { // auto-match criteria to invite one random automatch opponent. // You can also specify more opponents (up to 3). if(game.mGoogleClient.isConnected() && !isInitiated) { Bundle am = RoomConfig.createAutoMatchCriteria(1, 3, 0); // build the room config: RoomConfig.Builder roomConfigBuilder = RoomConfig.builder(Network.getInstance()); roomConfigBuilder.setMessageReceivedListener(Network.getInstance()); roomConfigBuilder.setRoomStatusUpdateListener(Network.getInstance()); roomConfigBuilder.setAutoMatchCriteria(am); RoomConfig roomConfig = roomConfigBuilder.build(); // create room: Games.RealTimeMultiplayer.create(game.mGoogleClient, roomConfig); // go to game screen this.mRoom = Network.getInstance().getRoom(); if(this.mRoom != null && this.mRoom.getParticipants().size() >= 2) { game.setScreen(new MultiGameScreen(game, this.mRoom)); isInitiated = true; } } else { game.mGoogleClient.connect(); } }

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  • merging two partitions on ubuntu

    - by gthm geeky
    This is how my partitions look like in Ubuntu. I would like to merge two partitions /dev/sda8 and /dev/sda/7 because I am unable to use both of them. /dev/sda8 111G 2.7G 103G 3% / udev 1.9G 12K 1.9G 1% /dev tmpfs 763M 864K 762M 1% /run none 5.0M 0 5.0M 0% /run/lock none 1.9G 252K 1.9G 1% /run/shm none 100M 72K 100M 1% /run/user /dev/sda7 117G 52M 111G 1% /home Please let me know if there is any way to do it. And all the partitions looks ugly..I would like to have only one partition which would be my home folder.

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