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  • Segfault when calling a method c++

    - by shuttle87
    I am fairly new to c++ and I am a bit stumped by this problem. I am trying to assign a variable from a call to a method in another class but it always segfaults. My code compiles with no warnings and I have checked that all variables are correct in gdb but the function call itself seems to cause a segfault. The code I am using is roughly like the following: class History{ public: bool test_history(); }; bool History::test_history(){ std::cout<<"test"; //this line never gets executed //more code goes in here return true; } class Game{ private: bool some_function(); public: History game_actions_history; bool local_variable; }; bool Game::some_function(){ local_variable = game_actions_history.test_history(); if (local_variable == true){ return true; } else{ return false; } } Any tips or advice is greatly appreciated!

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  • Why isn't my File.Move() working?

    - by yeahumok
    I'm not sure what exactly i'm doing wrong here...but i noticed that my File.Move() isn't renaming any files. Also, does anybody know how in my 2nd loop, i'd be able to populate my .txt file with a list of the path AND sanitized file name? using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.IO; using System.Text.RegularExpressions; namespace ConsoleApplication2 { class Program { static void Main(string[] args) { //recurse through files. Let user press 'ok' to move onto next step string[] files = Directory.GetFiles(@"C:\Documents and Settings\jane.doe\Desktop\~Test Folder for [SharePoint] %testing", "*.*", SearchOption.AllDirectories); foreach (string file in files) { Console.Write(file + "\r\n"); } Console.WriteLine("Press any key to continue..."); Console.ReadKey(true); //End section //Regex -- find invalid chars string pattern = " *[\\~#%&*{}/<>?|\"-]+ *"; string replacement = " "; Regex regEx = new Regex(pattern); string[] fileDrive = Directory.GetFiles(@"C:\Documents and Settings\jane.doe\Desktop\~Test Folder for [SharePoint] %testing", "*.*", SearchOption.AllDirectories); List<string> filePath = new List<string>(); //clean out file -- remove the path name so file name only shows string result; foreach(string fileNames in fileDrive) { result = Path.GetFileName(fileNames); filePath.Add(result); } StreamWriter sw = new StreamWriter(@"C:\Documents and Settings\jane.doe\Desktop\~Test Folder for [SharePoint] %testing\File_Renames.txt"); //Sanitize and remove invalid chars foreach(string Files2 in filePath) { try { string sanitized = regEx.Replace(Files2, replacement); sw.Write(sanitized + "\r\n"); System.IO.File.Move(Files2, sanitized); System.IO.File.Delete(Files2); } catch (Exception ex) { Console.Write(ex); } } sw.Close(); } } } I'm VERY new to C# and trying to write an app that recurses through a specific drive, finds invalid characters (as specified in the RegEx pattern), removes them from the filename and then write a .txt file that has the path name and the corrected filename. Any ideas?

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  • iPhone - Drawing 2D with OpenGL ES, fast and simple.

    - by Johannes Jensen
    I'm going to make a game for the iPhone, and I'm mostly going to be using images. I've read that using Quartz only is slow for actual games with high frame rates, so I was wondering if you guys had any good ideas for using OpenGL for rendering a game scene? I'm going to be using a lot of images, and I want to be able to freely rotate them. I've looked at Apple's examples GLSprite and GLPaint, but I don't really see anything I could use. All I want to do is be able to render images at specific positions, and want to be able to rotate them. I'm a noob at OpenGL, but I know Quartz.

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  • Structs inside #define in C++

    - by Adam Smith
    Being pretty new to C++, I don't quite understand some instructions I encounter such as: #ifndef BOT_H_ #define BOT_H_ #include "State.h" /* This struct represents your bot in the game of Ants */ struct Bot { State state; Bot(); void playGame(); //plays a single game of Ants void makeMoves(); //makes moves for a single turn void endTurn(); //indicates to the engine that it has made its moves }; #endif //BOT_H_ What I don't understand is the "#ifndef BOT_H_" and the "#define -- #endif" From what I gather, it defines a constant BOT_H_ if it's not already defined when the precompiler looks at it. I don't actually get how the struct inside it is a constant and how it is going to let me access the functions inside it. I also don't see why we're doing it this way? I used C++ a while back and I wasn't using .h files, so it might be something easy I'm missing.

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  • How do I test switching compilers from MSVS 6 to MSVS 2008?

    - by Leif
    When switching from MSVS 6 to MSVS 2008, what major differences should I look for when testing the software? I'm coming from more of a QA perspective. We have two programs that work closely together that were originally compiled in Visual C++ 6. Now one of the programs has been compiled in Visual C++ 2008 in order to use a specific CD writing routine. The other program is still compiled under MSVS 6. My manager is very concerned with this change and wants me to run tests specific to this change. Since I deal more with QA and less with development, I really have no idea where to start. I've looked for differences between the two, but nothing has given me a clear direction as far as testing is concerned. Any suggestions would be helpful.

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  • sort giving strange results

    - by Jay
    I have an array of email addresses that I am trying to sort, but I'm getting odd results. Here is what I mean: sort($array); print_r($array); ...[79] => 91******@******.com [80] => 9l***@**********.com [81] => ps*******@**********.com [82] => a.c******@*****.com [83] => a.d****@*****.com... What would cause that email beginning with p's to be mixed in after the numbers and before the A's? I removed that email address from the database and replaced it with "testing" and then "testing" appeared in the same position.

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  • With PHP and AJAX, Can two clients inter-exchange data without MySQL?

    - by Devyn
    Hi, Let's assume I'm developing a AJAX, PHP chess game. During the game, one movement of a player will be notified to the another but we are not saving that information. Normally, we used to store in MySQL every time a player makes movement and show update position to another player. What I want is to reduce MySQL load as much as possible and server is not interested in movements between two players. Server will only save final result like who wins. So what should I do?

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  • Using Python simplejson for transmitting JSON to another server results in unicode encoding problems

    - by Mark
    Hi there, I'm encoding a string with Python's simplejson library with special characters: hello testing spécißl characters plusses: +++++ special chars :œ?´®†¥¨ˆøp“ß?ƒ©??°¬O˜çv?˜µ== However, when I encode it and transmit it to the other machine (using POST), it turns out like this: {'message': ['{"body": "hello testing sp\\u00e9ci\\u00dfl characters\\n\\nplusses: \\n\\nspecial chars :\\u0153\\u2211\\u00b4\\u00ae\\u2020\\u00a5\\u00a8\\u02c6\\u00f8\\u03c0\\u201c\\u00df\\u2202\\u0192\\u00a9\\u02d9\\u2206\\u02da\\u00ac\\u03a9\\u2248\\u00e7\\u221a\\u222b\\u02dc\\u00b5\\u2264\\u2265"}']} The + signs are completely stripped and the rest are in this unicode(?) format. My code for this is: data = {'body': data_string} data_encoded = json.dumps(data) Any ideas? Thanks! Edit: I've tried using json.dumps(data, ensure_ascii=False) but it results in a UnicodeError ordinal not in range error.

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  • Visual C++/CLI "An unhandled exception of type 'System.StackOverflowException' occurred in"

    - by JennyWong
    Hi, I have a game I am making, it is giving me this message... "An unhandled exception of type 'System.StackOverflowException' occurred in game.exe" To explain...I have a 2D array with 9 different opening moves and I am getting a random number to use as the array reference to retrieve the details needed for a move... you may get the same move again - but that's illegal. the move may be illegal for other reasons too So to try and fix this, I am calling the function again from within the function. The error occurs very randomly Is this bad practise to call a function from within itself? What would be a better way to randomly row from a 2D array, AND if it isn't accept to get another one.... Or better still, how can I retrieve a random LEGAL move?

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  • How to calculate the touch location with convertToWorldSpace?

    - by Paul
    i would like to convert the touch location as a world coordinate in my tile game. With this code, i clicked on the right of the screen (so that my character walks in the tiled game, and the background goes slowly to the left) : - (void)ccTouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event { for( UITouch *touch in touches ) { CGPoint location = [touch locationInView: [touch view]]; location = [[CCDirector sharedDirector] convertToGL: location]; CGPoint test = [self convertToWorldSpace:location]; CCLOG(@"test : %.2g", test.x); The test log gives me : 50, 72, 1e+02, 2.6e+02, 4.2e+02, (and then goes down) 3.2e+02, 9.5, -1.9e+02, etc. Does anyone know why? I would like to calculate the "real" coordinate of the touch, so that i know when the character has to keep going (click on the right of its actual position) or if he has to turn and go backwards. (click on the left of its actual position) Thanks for your help

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  • APP CAN'T LAUNCH IN XCODE

    - by user2977180
    I'm beginning to code in xCode 5 and I'm doing a really simple app. I just began and, when I try to test my game with iOS Simulator, the main page opens, but when I click on the button to launch the game, I'm redirected to xCode and this appears: #import "AppDelegate.h" #import "AppDelegate.h" int main(int argc, char * argv[]) { @autoreleasepool { return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class])); } } and just next to it, this is written: Thread 1 : Signal SIGABRT I searched on internet and I just can't seem to find an answer. Could someone help me please???

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  • Using c#,c/c++ or java to improve BBN with GA

    - by madicemickael
    I have a little problem in my little project , I wish that someone here could help me! I am planning to use a bayesian network as a decision factor in my game AI and I want to improve the decision making every step of the way , anyone knows how to do that ? Any tutorials / existing implementations will be very good,I hope some of you could help me. I heard that a programmer in this community did a good implementation of this put together for poker game AI.I am planning to use it like him ,but in another poker(Texas) or maybe Rentz. Looking for C/c++ or c# or java code. Thanks , Mike

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  • Can I use Blender to create 3D wall image viewer application under Linux?

    - by sgon00
    Hi, Is that possible to use Blender to create Cooliris-like 3D wall image viewer application under Linux? I don't see many people use Blender (BGE) to create desktop application, so I am wondering if this is possible. People normally use Blender for modeling/movie and game engine. I can not find a good way to create 3D application in Linux so far. I was thinking about pyQT+opengl. But I feel that is hard to do. No robust and easy-to-use qt+opengl toolkit available from my research. I know a little bit of Blender, that's why I am asking if Blender is an alternative solution. (python is preferred) The image viewer doesn't have to be windowed. It can be full screen, like a game?. I would like to add many cool effects into this application. Hopefully cooler than Cooliris which is written in flash. Thanks a lot.

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  • How can I navigate through xaml pages with Monogame in a Windows Phone 8 project?

    - by misiMe
    I finished to develop an XNA game, then I created the Monogame project, and tested it on my device. Now I made some other pages such as an "about" page. How can I go to that page considering I have a Monogame project and just an XNA code? In particular inside my game I made a Main Menu where you can click the "about" button and know if someone has clicked: how can I link that event to the "go to about.xaml" function? Inside XNA, update method: if (about_button.IsClicked()) { // Go to about.xaml } I tried: if (about_button.IsClicked()) { ((PhoneApplicationFrame)Application.Current.RootVisual).Navigate(new Uri("/About.xaml", UriKind.Relative)); } But it throws: System.UnauthorizedAccessException

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  • C# Count registry keys existing using a partial value

    - by cheeseman
    Microsoft.Win32.RegistryKey registryPath = Microsoft.Win32.Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Wow6432Node\Testing"); Microsoft.Win32.RegistryKey entryKey = registryPath.OpenSubKey("Entry Point"); I have a lot of keys in Testing, in the format: "Entry Point 011", "Entry Point 123" - so Entry Point with random numbers after it. Would I be able to search the registryPath variable above and get a count of the number of keys containing the "Entry Point" keyword? Assuming that there are also other keys existing without this keyword. At the moment I have been using a for loop and looping for all possible combinations to get a count of all the keys, checking if the key exists or not, but as there are keys as high as "Entry Point 9000" having a for loop execute 9000 times is very inefficient. for (int i = 0; i <= highestEntryPointValue; i++) { Microsoft.Win32.RegistryKey entryKey = steamApps64.OpenSubKey("Entry Point " + Convert.ToString(i)); if (entryKey != null) { count++; } }

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  • Finding latest release links on website for C++ Application

    - by Brett Powell
    Basically I have written a game plugin that will allow server admins to update their administration tools from within game rather than having to go download it and install it. The releases are updated regularly, and the beta versions are nightly builds. I am trying to find a way to grab the links from the website, but I cannot think of anyway to do this off of the top of my head. Was hoping someone here might be able to suggest something that would work. http://www.sourcemod.net/snapshots.php Thats the website, basically I am trying to grab the links for the latest stable branch, and latest development branch.

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  • Can I assume Flash and PHP will generate the same floating point numbers?

    - by Fragsworth
    In a multiplayer game I'm developing, we have a few values that are floating point numbers. The back-end (in PHP) and the front-end (in Flash) occasionally perform the same calculations on these numbers, to minimize communication. I am currently making sure that both sides are using 64-bit doubles, but am I safe to assume that all calculations will be the same? For instance, what about string to float conversion - should I worry about Flash having a potentially different implementation as PHP? (If this happens, our game will go out of sync - the client will think it is in one state while the server is in another) With some testing, it appears to be the same, but I'm just not sure. Can someone clarify this for me?

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  • When we should use NSThreads in a cocoa Touch ?

    - by srikanth rongali
    I am writing a small game by using cocos2d. It is a shooting game. Player on one side and enemy on other side. To run the both actions of player shooting and enemy shooting do we should use threads ? Or can we do without using them. At present I am not using threads. But I can manage to do both actions of player and enemy at same time. Should I use threads compulsory good performance ? Or am I doing wrong without using threads ? Please help me from this confusion. Thank you.

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  • Android Graphics Memory Limits

    - by Gordon
    I am creating an android game using opengl and a cocos2d port (http://code.google.com/p/cocos2d-android-1). I am targeting a wide range of devices and want to ensure that it performs well. I only test on a nexus one and am hoping to get some input from people with experience on slower devices. Currently the game uses two 1024x1024 textures as well as two 256x256 textures. Is this within the limits of most devices? Anyone have any rule of thumb or experience with graphics memory limits in these cases? If gfx memory is exceeded does it page to normal memory?

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  • How to design parts of the application in XAML and how to reusing it then?

    - by MartyIX
    I'm working on a main window in my application and I would like to design parts of my window separately in Visual Studio designer. Main window Game desk (actually more of them and therefore it would be nice to design the game desk, mark it as a resource and then just via simple code (something like creating a new object and setting DataContext) create it. Console And so on Is it possible in VS to do this thing? I just need to know what to look for if it is possible. I don't need a whole solution. Thank you for suggestions!

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  • Mercurial Branching Model for task features

    - by Stan
    My development env: Windows 7, TortoiseHg, ASP.NET 4.0/MVC3 Test branch: code on test server Prod branch: code on production server This is my current branching model. The reason to branch out every task (feature) is because some features go to live slower. So in above graph, task 1 finished earlier (changeset #5), and merge into test branch for testing. However, due to bug or modification of original request, changesets #10, #12 have been made. While task 2 has finished testing #8 and pushed to live #9 already. My problem is every time when modifying task branch (like #10, #12), I have to do another merge to test branch (#11, #13), this makes the graph very messy. Is there any way to solve this issue? Or any better branching model?

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  • Socket server for 2D MMORPG

    - by Alejandro
    I'm starting a 2D browser multiplayer game consisting of a city with many kinds of transports (metro, buses, tunnels), players using those transports and having some interaction between them. I have started the client side in Actionscript, server side in PHP (but now i'm moving to Java) and persistence in MySQL. Which socket server (non commercial) will be preferable, RedDwarf (former DarkStar), Red5, ... ? Those servers are Flash Remoting (AMF) capable ? Those servers manage all the object's game persistence? Then there's no need to create a database ?

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  • Java - understanding servlets

    - by Trup
    I am working on a homework project that should implement a board game between 2 clients over an HttpServlet. I have couple of questions: 1) I read that HttpServlets must be stateless, however, for the sake of the game, I have to keep a lot of state(whose turn it is, the state of the board, etc). Do I have to keep this in the clients? Does the HttpServlet indeed have to be stateless, i.e. have no fields that track state? 2) I know that the clients will talk to the servlet via the doGet/doPost methods, but how can the servlet talk to the clients(for example, if player 1 just made a move and sent it to the servlet, the servlet has to tell client 2 what the move was). Thank you Also, if you can point me to a useful, simple example of a similar code online, I would be very grateful

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  • Profiling and Graphics.updateDisplay0()

    - by AD
    I am profiling my BlackBerry application (a game) with the options 'In method only' and 'Time including native method'. Under the 'All methods' node (after a decent run of the game) the single most time consuming function is Graphics.updateDisplay0() with over 50% of the run time spent there. I don't quite know what is the purpose of that function or if I can do anything to reduce its processing time, so if anyone can shed some light on the matter, I would be grateful. Because from what I understand with the 'In method only' option, it means there is some processing within that function. ps. there is no information on that function in the documentation.

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  • Workaround for UnsupportedAudioFileException ?

    - by tschan
    I'm in a very early stage of writing a small music/rhythm game in Java (via Slick framework, which in turns uses OpenAL, but that's probably irrelevant here). The game needs to read (and playback) several sound files in WAV format, but some of the files are throwing [javax.sound.sampled.UnsupportedAudioFileException] exceptions. at javax.sound.sampled.AudioSystem.getAudioInputStream(AudioSystem.java:1102) at org.newdawn.slick.openal.WaveData.create(WaveData.java:123) at org.newdawn.slick.openal.SoundStore.getWAV(SoundStore.java:713) at org.newdawn.slick.openal.SoundStore.getWAV(SoundStore.java:683) at org.newdawn.slick.Sound.<init>(Sound.java:33) The files can be played back just fine in Winamp or Foobar2000, so this means Java just don't recognize some variants of the file format. What are my options at this point? Note: The files in question are user-supplied, so i cannot just convert them beforehand (using something like audacity). Any conversion steps must be done at runtime.

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