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• Placing items randomly in a dynamically generated terrain

  - by Programlocura

  I'm currently working on a 'Tiny wings' like game. I've already asked about the angle of the items in curved lines and i solved (thank you for responses),i'm currently placing the items in random positions, but the terrain it's dynamically and i don't get this working. I've a vector with the points of the terrain, and i'm doing something similar to this (Iterating trough vector): if( _SPManager && i % 15 == 0 && i != 0 ) { if ( _settings.specialPoints && _currentPoints < _settings.specialPoints ) { _SPManager.addPoint( _hillsPosition[i].x , _hillsPosition[i].y ); _currentPoints++; } } But it isn't working as i expected. It isn't displaying the right number of items (Always shows less than i specified). How do i should place the items? Thanks :)

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• How can I implement smooth rotation from one direction to another?

  - by user1759052

  I'm having a problem with animating rotations with 1Matrix.CreateRotationY() with my basic 3D game. Based on where you click the mouse, I want the 3D object to rotate to that direction and then move. I am using this to determine the target direction: float rot = (float)(Math.Atan2(X, Z)); It gives me the correct value, but I am not sure how to handle the rotation animation from current direction to new direction. I've tried a few things, but to no avail. Do you guys know of any good ways of solving this issue?

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• MMORPG Server architecture: How to handle player input (messages/packets) while the server has to update many other things at the same time?

  - by Renann

  Yes, the question is is very difficult. This is more or less like what I'm thinking up to now: while(true) { if (hasMessage) { handleTheMessage(); } } But while I'm receiving the player's input, I also have objects that need to be updated or, of course, monsters walking (which need to have their locations updated on the game client everytime), among other things. What should I do? Make a thread to handle things that can't be stopped no matter what? Code an "else" in the infinity loop where I update the other things when I don't have player's input to handle? Or even: should I only update the things that at least one player can see? These are just suggestions... I'm really confused about it. If there's a book that covers these things, I'd like to know. It's not that important, but I'm using the Lidgren lib, C# and XNA to code both server and client. Thanks in advance.

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• Vector transform equation explanation

  - by cyberdemon

  I'm trying to understand the maths of moving points in a 3d space by making a game written in C#. I'm looking at this wolfire blog series which explains some basic 3d maths. I've read the first two parts but am stuck on the 3rd. I know it's all really rudimentary stuff but I find Googling for help with equations really hard. The one I'm struggling with is: 0*(0.66,0.75) + 2*(-0.75, 0.66) = (-1.5, 1.3) How can anything multiplied by 0 not be 0? So my question is how does this look in code: x(a,b) + y(c,d) I know it's basic stuff but I just can't see it.

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• what is the best way to add avoidance behaviour to an AI framework?

  - by SirYakalot

  I have a small AI framework for a shooting based game. Although this is rarely needed, as when agents are close to each other they are usually fighting, I would none the less like some way of implementing avoidance behaviour. For example, if in the future I wanted to take away their weapons and have many of them wonder around in a crowd, how would I make them not hit / pass through each other, but instead avoid each other? two ideas I had would be to add steering behaviour and allow that to deviate from their path, or to use a dynamic pathfinding technique. Are there better ways? What is the more respected practice?

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• Android best source codes [on hold]

  - by lynndragon

  1) I would like to know best and simple android source code sites or forum for game development.. Especially, animation, graphics are needed.. 2) By the way, I'm now learning Adobe Air for Android ... Is it useful? I mean Adobe Air do not need to know programming knowledge..but it's simple.. Weakness of Adobe Air apps are that AdobeAir.apk must be installed...If not, they cannot run.. So,how is yours suggestions? Please answer me....Regards

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• Directional Lights

  - by Setrio

  I'm working on a game idea (2D) that needs directional lights. Basically I want to add light sources that can be moved and the light rays interact with the other bodies on the scene. What I'm doing right now is some test where using sensors (box2d) and ccDrawLine I could achieve something similar to what I want. Basically I send a bunch of sensors from certain point and with raycast detect collisions, get the end points and draw lines over the sensors. Just want to get some opinions if this is a good way of doing this or is other better options to build something like this? Also I would like to know how to make a light effect over this area (sensors area) to provide a better looking light effect. Any ideas?

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• Managing shots of the player

  - by Bitbridge

  I'm currently developing a 2D Jump'n'Run and the situation is the following: The player has different weapons he can collect and is then able to shoot the weapon's projectiles (laser, rockets, whatever). In my previous game (space shooter) I just had a manager class for all the weapon-shots, it stored them in a container and then updates and draws every single one. When the "shoot-event" occurred, the "ProjectileManager" was notified and it added the wanted projectile. The input for player action is handled in the player-class, so the player would have to know the manager to call the function of the manager. I also have a collisionManager, that checks for collisions between, for example, enemies and the projectiles and then notifies these objects. However, I somehow have the feeling, that I shouldn't use this approach and that there might be a better way to handle this. I know, the question is a bit vague, I'm pretty much just looking for input and ideas to improve my design.

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• Multiple buttons on screen

  - by Rajas

  I am not a game developer. I am a java developer. However I need some information and I am hoping you can help me. I want to build an app that has 3 buttons on the touch screen - 1,2 and 3. Depending on the screen input the user has to press or release button 3 but (s)he will have to keep either 1 or 2 depressed all the time. For example: Keep 1 pressed while operating button 3 or Keep 2 pressed while operating button 3. Please let me know if this is even doable. Best Regards, \|/

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• How to setup Cocos2D-X (Android) under Mac OS X?

  - by Beast

  Hi I've made a small game for iPhone that I also want to run on Android but I'm having problems setting up Cocos2D-X for Android. I've downloaded and installed Android SDK and NDK (under my "/Users/username/Android"). Installed all necessary packages under SDK and created an Emulator. Copied Cocos2D-x under "/Users/username/cocos2dx". Installed Eclipse IDE with ADT Plugin. Opened "Users/username/cocos2dx/tests/build_native.sh" and changed "NDK_ROOT_LOCAL=/Users/username/Android/android-ndk", "COCOS2DX_ROOT_LOCAL=/Users/username/cocos2dx" to the values shown. On running the script using Terminal it compiles test project. What's next?

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• Large Sprite Performance

  - by Iansen

  I've got a large Sprite generated using a set of vertices(x,y coordinates) and a bitmap pattern (using moveTo, lineTo, beginBitmapFill, endFill ...etc). It's about 15000 pixels wide and between 1500 - 2000 pixels high depending on the level -it's the terrain for a 2D game. My question is: what is the best way to display/move it on the stage - performance wise? Currently I'm just adding it to the stage as is...I get decent frame rate/ memory/ cpu usage but I want to optimize it for slower PCs. Any ideas? I've been reading a little about blitting but I'm not sure how to implement it in my case. Thanks.

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• Disable Windows 8 edge gestures/hot corners for multi-touch applications while running in full screen

  - by Bondye

  I have a full screen AS3 game maby with Adobe AIR that runs in Windows 7. In this game it may not be easy to exit (think about kiosk mode, only exit by pressing esc and enter a password). Now I want this game to run in Windows 8. The game is working like expected but the anoying things are these edge gestures/hot corners (left, top, right, bottom) and the shortcuts. I've read articles but none helped me. People talk about registery edits, but I dont get this working + the user needs to restart his/hers computer. I want to open my game, turn off gestures/hot corners and when the game closes the gestures/hot corners need to come back available again. I have seen some applications doing the same what I want to accomplish. I found this so I am able to detect the gestures. But how to ignore they're actions? I also read ASUS Smart Gestures but this is for the touch-pad. And I have tried Classic Shell but I need to disable the edge gestures/hot corners without such programs, just on-the-fly. I also found this but I don't know how to implement this. HRESULT SetTouchDisableProperty(HWND hwnd, BOOL fDisableTouch) { IPropertyStore* pPropStore; HRESULT hrReturnValue = SHGetPropertyStoreForWindow(hwnd, IID_PPV_ARGS(&pPropStore)); if (SUCCEEDED(hrReturnValue)) { PROPVARIANT var; var.vt = VT_BOOL; var.boolVal = fDisableTouch ? VARIANT_TRUE : VARIANT_FALSE; hrReturnValue = pPropStore->SetValue(PKEY_EdgeGesture_DisableTouchWhenFullscreen, var); pPropStore->Release(); } return hrReturnValue; } Does anyone know how I can do this? Or point me into the right direction? I have tried some in C# and C++, but I aint a skilled C#/C++ developer. Also the game is made in AS3 so it will be hard to implement this in C#/C++. I work on the Lenovo aio (All in one) with Windows 8.

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• Custom JComponent not displaying in Custom JPanel

  - by Trizicus

  I've tried the add() method but nothing is displayed when I try to add Test to GraphicsTest. How should I be adding it? Can someone show me? I've included the code I'm using. import java.awt.Color; import java.awt.Graphics; import java.awt.Graphics2D; import javax.swing.JComponent; public class Test extends JComponent { Test() { setOpaque(false); setBackground(Color.white); } @Override public void paintComponent(Graphics g) { super.paintComponent(g); Graphics2D g2d = (Graphics2D) g.create(); g2d.setColor(Color.red); g2d.drawString("Hello", 50, 50); g2d.dispose(); } } import java.awt.Color; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import java.awt.geom.Rectangle2D; import javax.swing.JPanel; public class GraphicsTest extends JPanel implements MouseListener { private Graphics2D g2d; private String state; private int x, y; GraphicsTest() { add(new Test()); } @Override public void paintComponent(Graphics g) { super.paintComponent(g); g2d = (Graphics2D) g; g2d.setColor(Color.BLACK); g2d.drawString("STATE: " + state, 5, 15); g2d.drawString("Mouse Position: " + x + ", " + y, 5, 30); g2d.setColor(Color.red); Rectangle2D r2d = new Rectangle2D.Double(x, y, 10, 10); g2d.draw(r2d); g2d.dispose(); } public void setState(String state) { this.state = state; } public String getState() { return state; } public void setX(int x) { this.x = x; repaint(); } public void setY(int y) { this.y = y; repaint(); } public void mouseClicked(MouseEvent e) {} public void mousePressed(MouseEvent e) {} public void mouseReleased(MouseEvent e) {} public void mouseEntered(MouseEvent e) {} public void mouseExited(MouseEvent e) {} }

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• WebClient error when using a thread in .NET

  - by Kiranu

  I'm having a very weird error using the WebClient class in .NET 4. The app simply downloads some files off the internet and provides output on a textbox (the GUI is WPF). The method that does this is the following: void DownloadFiles(object files) { fileL = (List<string>) files; foreach (string url in fileL) { byte[] data; using (System.Net.WebClient k = new WebClient()) { data = k.DownloadData(url); } //Bunch of irrelevant code goes here... } } (I added the using while trying to divine [yes I'm that desperate/ignorant] a solution, the problem happens even if the webclient is declared and initialized outside the foreach loop) Now the problem appears only when I'm executing this method on a thread separate from the WPF UI main thread. If it is executed on the UI thread then it works perfectly. When a new thread is created with: Thread t = new Thread(DownloadFiles); t.Start(files); The first time the code goes into the loop it will work, but when its the second pass inside the loop, I will always receive a TargetParameterCountException. I can't make any sense of this error. Any help is very much appreciated. EDIT Here are the Exception Details: Exception.Message = "Parameter count mismatch." Exception.InnerException = null Exception.Source = " mscorlib" The StackTrace follows: at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks) at System.Delegate.DynamicInvokeImpl(Object[] args) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler) at System.Windows.Threading.DispatcherOperation.InvokeImpl() at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state) at System.Threading.ExecutionContext.runTryCode(Object userData) at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Windows.Threading.DispatcherOperation.Invoke() at System.Windows.Threading.Dispatcher.ProcessQueue() at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler) at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam) at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg) at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame) at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame) at System.Windows.Threading.Dispatcher.Run() at System.Windows.Application.RunDispatcher(Object ignore) at System.Windows.Application.RunInternal(Window window) at System.Windows.Application.Run(Window window) at System.Windows.Application.Run() at FileDownloader.App.Main() in d:\mis documentos\visual studio 2010\Projects\OneMangaDownloader\FileDownloader\obj\x86\Debug\App.g.cs:line 0 at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args) at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart()

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• WebClient error when using a thread in .NET 4

  - by Kiranu

  I'm having a very weird error using the WebClient class in .NET 4. The app simply downloads some files off the internet and provides output on a textbox (the GUI is WPF). The method that does this is the following: void DownloadFiles(object files) { fileL = (List<string>) files; foreach (string url in fileL) { byte[] data; using (System.Net.WebClient k = new WebClient()) { data = k.DownloadData(url); } //Bunch of irrelevant code goes here... } } (I added the using while trying to divine [yes I'm that desperate/ignorant] a solution, the problem happens even if the webclient is declared and initialized outside the foreach loop) Now the problem appears only when I'm executing this method on a thread separate from the WPF UI main thread. If it is executed on the UI thread then it works perfectly. When a new thread is created with: Thread t = new Thread(DownloadFiles); t.Start(files); The first time the code goes into the loop it will work, but when its the second pass inside the loop, I will always receive a TargetParameterCountException. I can't make any sense of this error. Any help is very much appreciated. EDIT Here are the Exception Details: Exception.Message = "Parameter count mismatch." Exception.InnerException = null Exception.Source = " mscorlib" The StackTrace follows: at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks) at System.Delegate.DynamicInvokeImpl(Object[] args) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler) at System.Windows.Threading.DispatcherOperation.InvokeImpl() at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state) at System.Threading.ExecutionContext.runTryCode(Object userData) at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Windows.Threading.DispatcherOperation.Invoke() at System.Windows.Threading.Dispatcher.ProcessQueue() at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler) at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam) at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg) at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame) at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame) at System.Windows.Threading.Dispatcher.Run() at System.Windows.Application.RunDispatcher(Object ignore) at System.Windows.Application.RunInternal(Window window) at System.Windows.Application.Run(Window window) at System.Windows.Application.Run() at FileDownloader.App.Main() in d:\mis documentos\visual studio 2010\Projects\OneMangaDownloader\FileDownloader\obj\x86\Debug\App.g.cs:line 0 at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args) at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart()

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• Facebook Authentication Error when using apps.facebook.com as URL

  - by Adi Mathur

  I am trying to login on my website using Facebook Authentication and it works fine . How ever when i access the Application by using https://apps.facebook.com/myApp then i get an error The state does not match. You may be a victim of CSRF Here is the code that i am using from facebook , I think there is a problem in $my_url <?php $app_id = "YOUR_APP_ID"; $app_secret = "YOUR_APP_SECRET"; $my_url = "https://www.example.com/login.php"; session_start(); $code = $_REQUEST["code"]; if(empty($code)) { $_SESSION['state'] = md5(uniqid(rand(), TRUE)); //CSRF protection $dialog_url = "https://www.facebook.com/dialog/oauth?client_id=" . $app_id . "&redirect_uri=" . urlencode($my_url) . "&state=" . $_SESSION['state']; echo("<script> top.location.href='" . $dialog_url . "'</script>"); } if($_REQUEST['state'] == $_SESSION['state']) { $token_url = "https://graph.facebook.com/oauth/access_token?" . "client_id=" . $app_id . "&redirect_uri=" . urlencode($my_url) . "&client_secret=" . $app_secret . "&code=" . $code; $response = file_get_contents($token_url); $params = null; parse_str($response, $params); $graph_url = "https://graph.facebook.com/me?access_token=" . $params['access_token']; $user = json_decode(file_get_contents($graph_url)); echo("Hello " . $user->name); } else { echo("The state does not match. You may be a victim of CSRF."); } ?>

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• Decrypting data from a secure socket

  - by Ronald

  I'm working on a server application in Java. I've successfully got past the handshake portion of the communication process, but how do I go about decrypting my input stream? Here is how I set up my server: import java.io.IOException; import java.net.ServerSocket; import java.net.Socket; import java.util.ArrayList; import java.util.HashMap; import javax.net.ServerSocketFactory; import javax.net.ssl.SSLServerSocket; import javax.net.ssl.SSLServerSocketFactory; import org.json.me.JSONException; import dictionary.Dictionary; public class Server { private static int port = 1234; public static void main(String[] args) throws JSONException { System.setProperty("javax.net.ssl.keyStore", "src/my.keystore"); System.setProperty("javax.net.ssl.keyStorePassword", "test123"); System.out.println("Starting server on port: " + port); HashMap<String, Game> games = new HashMap<String, Game>(); final String[] enabledCipherSuites = { "SSL_RSA_WITH_RC4_128_SHA" }; try{ SSLServerSocketFactory socketFactory = (SSLServerSocketFactory) SSLServerSocketFactory.getDefault(); SSLServerSocket listener = (SSLServerSocket) socketFactory.createServerSocket(port); listener.setEnabledCipherSuites(enabledCipherSuites); Socket server; Dictionary dict = new Dictionary(); Game game = new Game(dict); //for testing, creates 1 global game. while(true){ server = listener.accept(); ClientConnection conn = new ClientConnection(server, game, "User"); Thread t = new Thread(conn); t.start(); } } catch(IOException e){ System.out.println("Failed setting up on port: " + port); e.printStackTrace(); } } } I used a BufferedReader to get the data send from the client: BufferedReader d = new BufferedReader(new InputStreamReader(socket.getInputStream())); After the handshake is complete it appears like I'm getting encrypted data. I did some research online and it seems like I might need to use a Cipher, but I'm not sure. Any ideas?

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• Hibernate MappingException Unknown entity: $Proxy2

  - by slynn1324

  I'm using Hibernate annotations and have a VERY basic data object: import java.io.Serializable; import javax.persistence.Entity; import javax.persistence.Id; @Entity public class State implements Serializable { /** * */ private static final long serialVersionUID = 1L; @Id private String stateCode; private String stateFullName; public String getStateCode() { return stateCode; } public void setStateCode(String stateCode) { this.stateCode = stateCode; } public String getStateFullName() { return stateFullName; } public void setStateFullName(String stateFullName) { this.stateFullName = stateFullName; } } and am trying to run the following test case: public void testCreateState(){ Session s = HibernateUtil.getSessionFactory().getCurrentSession(); Transaction t = s.beginTransaction(); State state = new State(); state.setStateCode("NE"); state.setStateFullName("Nebraska"); s.save(s); t.commit(); } and get an org.hibernate.MappingException: Unknown entity: $Proxy2 at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:628) at org.hibernate.impl.SessionImpl.getEntityPersister(SessionImpl.java:1366) at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:121) .... I haven't been able to find anything referencing the $Proxy part of the error - and am at a loss.. Any pointers to what I'm missing would be greatly appreciated. hibernate.cfg.xml <property name="hibernate.connection.driver_class">org.hsqldb.jdbcDriver</property> <property name="connection.url">jdbc:hsqldb:hsql://localhost/xdb</property> <property name="connection.username">sa</property> <property name="connection.password"></property> <property name="current_session_context_class">thread</property> <property name="dialect">org.hibernate.dialect.HSQLDialect</property> <property name="show_sql">true</property> <property name="hbm2ddl.auto">update</property> <property name="hibernate.transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</property> <mapping class="com.test.domain.State"/> in HibernateUtil.java public static SessionFactory getSessionFactory(boolean testing ) { if ( sessionFactory == null ){ try { String configPath = HIBERNATE_CFG; AnnotationConfiguration config = new AnnotationConfiguration(); config.configure(configPath); sessionFactory = config.buildSessionFactory(); } catch (Exception e){ e.printStackTrace(); throw new ExceptionInInitializerError(e); } } return sessionFactory; }

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• angular-ui-router : breadcrumps ok but view ko

  - by anakin59490

  this is my app.router.js : agentRouter.config([ '$stateProvider', '$urlRouterProvider', function($stateProvider, $urlRouterProvider) { var root = { name: 'root', abstract: true, url: '', title: 'home', views: { 'header': { templateUrl: 'views/headers/header.app.html', controller: 'HeaderCtrl' }, 'body': { templateUrl: "views/root.html" }, 'footer': { templateUrl: 'views/footers/footer.app.html' } } }; var agent = { name: 'root.agent', url: '/agent', title: 'agent', views: { 'root.sidebar': { templateUrl: "views/main.sidebar.html" }, 'root.container': { templateUrl: "views/partials/agent/list.container.html" } } }; var detail = { name: 'root.agent.detail', url: '/detail/:id', title: 'agentDetail', // use for breadcrumb views: { 'root.sidebar': { templateUrl: "views/main.sidebar.html" }, 'root.container': { templateUrl: "views/partials/agent/list.chantier.html" } } }; /.../ $stateProvider.state(root); $stateProvider.state(agent); $stateProvider.state(detail); } ]); and this is my root.html : <!--Breadcrumb content--> <ul class="row breadcrumb"> <i class="glyphicon glyphicon-home" style=""></i> <li ng-repeat="state in $state.$current.path"> <a ng-href="#{{state.url.format($stateParams)}}"><span ng-bind="state.title"></span></a> <span ng-hide="$last" class=""></span> </li> </ul> <!--Sidebar content--> <div ui-view="root.sidebar">default root.sidebar</div> <!--Container content--> <div style="background-color: #f9f9f9" ui-view="root.container">default root.container</div> I can access to my "agent" page (a list of person) and my breadcrumb is right : home / agent but when i click on an item of the list i got always the same page but my breadcrumb is right : home / agent / agentDetail but in app.router.js if change detail like this : var detail = { name: 'root.detail', // référence initiale + detail (fils) url: '/agent/detail/:id', // réference utilisée dans les fichiers HTML, attention c'est la suite de l'url précédente!!! title: 'agentDetail', // référence utilisée pour le breadcump views: { 'root.sidebar': { templateUrl: "views/main.sidebar.html" }, 'root.container': { templateUrl: "views/partials/agent/list.chantier.html" } } }; i got the right page (list.chantier.xml) but the breadcrumb is false : home / agentDetail instead of home / agent / agentDetail I would like to got the right breadcrumb (home / agent / agentDetail) with the right page (list.chantier.html) when i click on an item of the agent list page (list.container.html) Thank you in advance for your help

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• Translate parse_git_branch function to zsh from bash (for prompt)

  - by yar

  I am using this function in Bash function parse_git_branch { git_status="$(git status 2> /dev/null)" pattern="^# On branch ([^${IFS}]*)" if [[ ! ${git_status}} =~ "working directory clean" ]]; then state="*" fi # add an else if or two here if you want to get more specific if [[ ${git_status} =~ ${pattern} ]]; then branch=${BASH_REMATCH[1]} echo "(${branch}${state})" fi } but I'm determined to use zsh. While I can use this perfectly as a shell script (even without a shebang) in my .zshrc the error is a parse error on this line if [[ ! ${git_status}}... What do I need to do to get it ready for zshell? Edit: The "actual error" I'm getting is " parse error near } and it refers to the line with the strange double }}, which works on Bash. Edit: Here's the final code, just for fun: parse_git_branch() { git_status="$(git status 2> /dev/null)" pattern="^# On branch ([^[:space:]]*)" if [[ ! ${git_status} =~ "working directory clean" ]]; then state="*" fi if [[ ${git_status} =~ ${pattern} ]]; then branch=${match[1]} echo "(${branch}${state})" fi } setopt PROMPT_SUBST PROMPT='$PR_GREEN%n@$PR_GREEN%m%u$PR_NO_COLOR:$PR_BLUE%2c$PR_NO_COLOR%(!.#.$)' RPROMPT='$PR_GREEN$(parse_git_branch)$PR_NO_COLOR' Thanks to everybody for your patience and help. Edit: The best answer has schooled us all: git status is porcelain (UI). Good scripting goes against GIT plumbing. Here's the final function: parse_git_branch() { in_wd="$(git rev-parse --is-inside-work-tree 2>/dev/null)" || return test "$in_wd" = true || return state='' git diff-index HEAD --quiet 2>/dev/null || state='*' branch="$(git symbolic-ref HEAD 2>/dev/null)" test -z "$branch" && branch='<detached-HEAD>' echo "(${branch#refs/heads/}${state})" } PROMPT='$PR_GREEN%n@$PR_GREEN%m%u$PR_NO_COLOR:$PR_BLUE%2c$PR_NO_COLOR%(!.#.$)' RPROMPT='$PR_GREEN$(parse_git_branch)$PR_NO_COLOR' Note that only the prompt is zsh-specific. In Bash it would be your prompt plus "\$(parse_git_branch)". This might be slower (more calls to GIT, but that's an empirical question) but it won't be broken by changes in GIT (they don't change the plumbing). And that is very important for a good script moving forward. Days Later: Ugh, it turns out that diff-index HEAD is NOT the same as checking status against working directory clean. So will this mean another plumbing call? I surely don't have time/expertise to write my own porcelain....

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• How to reconcile my support of open-source software and need to feed and house myself?

  - by Guzba

  I have a bit of a dilemma and wanted to get some other developers' opinions on it and maybe some guidance. So I have created a 2D game for Android from the ground up, learning and re factoring as I went along. I did it for the experience, and have been proud of the results. I released it for free as ad supported with AdMob not really expecting much out of it, but curious to see what would happen. Its been a few of months now since release, and it has become very popular (250k downloads!). Additionally, the ad revenue is great and is driving me to make more good games and even allowing me to work less so that I can focus on my own works. When I originally began working on the game, I was pretty new to concurrency and completely new to Android (had Java experience though). The standard advice I got for starting an Android game was to look at the sample games from Google (Snake, Lunar Lander, ...) so I did. In my opinion, these Android sample games from Google are decent to see in general what your code should look like, but not actually all that great to follow. This is because some of their features don't work (saving game state), the concurrency is both unexplained and cumbersome (there is no real separation between the game thread and the UI thread since they sync lock each other out all the time and the UI thread runs game thread code). This made it difficult for me as a newbie to concurrency to understand how it was organized and what was really running what code. Here is my dilemma: After spending this past few months slowly improving my code, I feel that it could be very beneficial to developers who are in the same position that I was in when I started. (Since it is not a complex game, but clearly coded in my opinion.) I want to open up the source so that others can learn from it but don't want to lose my ad revenue stream, which, if I did open the source, I fear I would when people released versions with the ad stripped, or minor tweaks that would fragment my audience, etc. I am a CS undergrad major in college and this money is giving me the freedom to work less at summer job, thus giving me the time and will to work on more of my own projects and improving my own skills while still paying the bills. So what do I do? Open the source at personal sacrifice for the greater good, or keep it closed and be a sort of hypocritical supporter of open source?

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• Thread class closing from other Class (Activity) with protected void onStop() Android

  - by user1761337

  I have a Problem with Closing the Thread. I will Closing the Thread with onStop,onPause and onDestroy. This is my Source in the Activity Class: @Override protected void onStop(){ super.onStop(); finish(); } @Override protected void onPause() { super.onPause(); finish(); } @Override public void onDestroy() { this.mWakeLock.release(); super.onDestroy(); } And the Thread Class: public class GameThread extends Thread { private SurfaceHolder mSurfaceHolder; private Handler mHandler; private Context mContext; private Paint mLinePaint; private Paint blackPaint; //for consistent rendering private long sleepTime; //amount of time to sleep for (in milliseconds) private long delay=1000/30; //state of game (Running or Paused). int state = 1; public final static int RUNNING = 1; public final static int PAUSED = 2; public final static int STOPED = 3; GameSurface gEngine; public GameThread(SurfaceHolder surfaceHolder, Context context, Handler handler,GameSurface gEngineS){ //data about the screen mSurfaceHolder = surfaceHolder; mHandler = handler; mContext = context; gEngine=gEngineS; } //This is the most important part of the code. It is invoked when the call to start() is //made from the SurfaceView class. It loops continuously until the game is finished or //the application is suspended. private long beforeTime; @Override public void run() { //UPDATE while (state==RUNNING) { Log.d("State","Thread is runnig"); //time before update beforeTime = System.nanoTime(); //This is where we update the game engine gEngine.Update(); //DRAW Canvas c = null; try { //lock canvas so nothing else can use it c = mSurfaceHolder.lockCanvas(null); synchronized (mSurfaceHolder) { //clear the screen with the black painter. //reset the canvas c.drawColor(Color.BLACK); //This is where we draw the game engine. gEngine.doDraw(c); } } finally { // do this in a finally so that if an exception is thrown // during the above, we don't leave the Surface in an // inconsistent state if (c != null) { mSurfaceHolder.unlockCanvasAndPost(c); } } this.sleepTime = delay-((System.nanoTime()-beforeTime)/1000000L); try { //actual sleep code if(sleepTime>0){ this.sleep(sleepTime); } } catch (InterruptedException ex) { Logger.getLogger(GameThread.class.getName()).log(Level.SEVERE, null, ex); } while (state==PAUSED){ Log.d("State","Thread is pausing"); try { this.sleep(1000); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } }} How i can close the Thread from Activity Class??

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• CodePlex Daily Summary for Friday, June 10, 2011

  CodePlex Daily Summary for Friday, June 10, 2011Popular ReleasesZen4Sync, Orchestration and Test Load platform for SQL Server Merge Replication: Zen4Sync Report 1.0 - Excel Add-In: Zen4Sync Report is an Excel Add-In allowing you to generate reports based on the data generated by your Test Sessions. Choose a Zen4Sync Report release according to your version of Excel. The downloaded .zip archive contains all the resources needed to install the Zen4Sync Report Add-In for your version of Excel. For instrunctions on how to install, use and customize Zen4Sync Report, please see the Zen4Sync Report Guide.Candescent NUI: Candescent NUI Start Menu: This is the first version of the Candescent NUI Start Menu. There is currently only one item in the start menu by default (Windows Explorer). There is no user interface for configuration yet, but you can add programs yourself by adding lines to the file menu_config.csv. Please don't change the first line. Lines for programs have the following format: Name;Path Default Explorer;c:\windows\explorer.exe MyApp;c:\...\myapp.exe To show the menu, present your open hand to the kinect at a distan...Media Companion: MC 3.406b weekly: An minor issue was found with 3.406b, the fixed version is now posted.... Extract the entire archive to a folder which has user access rights, eg desktop, documents etc. Refer to the documentation on this site for the Installation & Setup Guide Important! If you find MC not displaying movie data properly, please try a 'movie rebuild' to reload the data from the nfo's into MC's cache. Fixes Movies Readded movie preference to rename invalid or scene nfo's to info extension Fix crash during ...SCCM Client Actions Tool: SCCM Client Actions Tool v0.5.1: SCCM Client Actions Tool v0.5.1 is currently the most stable version and includes all of the functionality requested so far. It comes with following changes since last version: Fixed an incorrect path to x64 client setup folder. It comes as a ZIP file that contains three files: ClientActionsTool.hta – The tool itself. Cmdkey.exe – command line tool for managing cached credentials. This is needed for alternate credentials feature when running the HTA on Windows XP. Cmdkey.exe is natively a...Windows Azure VM Assistant: AzureVMAssist V1.0.0.5: AzureVMAssist V1.0.0.5 (Debug) - Test Release VersionSizeOnDisk: 1.8.0.3: Fix (issue 317): Main window icon loading error on windows server 2003 32bit runing on x86 cpu. Bypass of the Microsoft windows comexception.SketchFlow Template for Windows Phone: SketchFlow Template for Windows Phone 7: Initial release. Please make sure you are using a version of Blend with SketchFlow enabled and have also installed the the Mango developer tools for Windows Phone. fastJSON: v1.8: - Silverlight 4.0+ support merged - RegisterCustomType() for user defined serialization/deserialization without changing the source code open closed principalNetOffice - The easiest way to use Office in .NET: NetOffice Release 0.9: Changes: - fix examples (include issue 16026) - add new examples - 32Bit/64Bit Walkthrough is now available in technical Documentation. Includes: - Runtime Binaries and Source Code for .NET Framework:......v2.0, v3.0, v3.5, v4.0 - Tutorials in C# and VB.Net:..............................................................COM Proxy Management, Events, etc. - Examples in C# and VB.Net:............................................................Excel, Word, Outlook, PowerPoint, Access - COMAddi...Reusable Library: V1.1.3: A collection of reusable abstractions for enterprise application developerClosedXML - The easy way to OpenXML: ClosedXML 0.54.0: New on this release: 1) Mayor performance improvements. 2) AdjustToContents now take into account the text rotation. 3) Fixed issues 6782, 6784, 6788HTML-IDEx: HTML-IDEx .15 ALPHA: This release fixes line counting a little bit and adds the masshighlight() sub, which highlights pasted and inserted code.AutoLoL: AutoLoL v2.0.3: - Improved summoner spells are now displayed - Fixed some of the startup errors people got - Double clicking an item selects it - Some usability changes that make using AutoLoL just a little easier - Bug fixes AutoLoL v2 is not an update, but an entirely new version! Please install to a different directory than AutoLoL v1Host Profiles: Host Profiles 1.0: Host Profiles 1.0 Release Quickly modify host file Automatically flush dnsVidCoder: 0.9.2: Updated to HandBrake 4024svn. This fixes problems with mpeg2 sources: corrupted previews, incorrect progress indicators and encodes that incorrectly report as failed. Fixed a problem that prevented target sizes above 2048 MB.SharePoint Search XSL Samples: SharePoint 2010 Samples: I have updated some of the samples from the 2007 release. These all work in SharePoint 2010. I removed the Pivot on File Extension because SharePoint 2010 search has refiners that perform the same function.AcDown????? - Anime&Comic Downloader: AcDown????? v3.0 Beta5: ??AcDown?????????????，??????????????，????、????。?????Acfun????? ????32??64? Windows XP/Vista/7 ????????????? ??：????????Windows XP???,?????????.NET Framework 2.0???(x86)?.NET Framework 2.0???(x64)，?????"?????????"??? ??v3.0 Beta5 ?????????? ???? ?? ???????? ???"????????"?? ????????????? ????????/???? ?? ???"????"??? ?? ??????????? ?? ?? ??????????? ?? ?????????????????? ??????????????????? ???????????????? ????????????Discussions???????? ????AcDown??????????????VFPX: GoFish 4 Beta 1: Current beta is Build 144 (released 2011-06-07 ) See the GoFish4 info page for details and video link: http://vfpx.codeplex.com/wikipage?title=GoFishSterling NoSQL OODB for .NET 4.0, Silverlight 4 and 5, and Windows Phone 7: Sterling OODB v1.5: Welcome to the Sterling 1.5 RTM. This version is backwards compatible without modification to the 1.4 beta. For the 1.0, you will need to upgrade your database. Please see this discussion for details. You must modify your 1.0 code for persistence. The 1.5 version defaults to an in-memory driver. To save to isolated storage or use one of the new mechanisms, see the available drivers and pass an instance of the appropriate one to your database (different databases may use different drivers). ...patterns & practices: Project Silk: Project Silk Community Drop 10 - June 3, 2011: Changes from previous drop: Many code changes: please see the readme.mht for details. New "Application Notifications" chapter. Updated "Server-Side Implementation" chapter. Guidance Chapters Ready for Review The Word documents for the chapters are included with the source code in addition to the CHM to help you provide feedback. The PDF is provided as a separate download for your convenience. Installation Overview To install and run the reference implementation, you must perform the fol...New ProjectsAngry Apps: A game platform written on top of XNA Game Studio. The purpose of this project is to project a vanilla type Game project which can be used in many types of games.BLooD_ICQ: bloodicqCloud Fox: Cloud Fox is a Windows Phone application that allows you to view your Firefox Sync data on your mobile phone. It is similar to Firefox Home for iPhone. The current version will target phones running NoDo, but future versions will eventually require Mango. The application is developed in C# using Silverlight, Json.Net, Mvvm Light and Ninject.Configuration files Merger: This program is to help to merge different config files(environmental difference) and common config file into a single web.config/app.config. CRM 2011 Plugin Utilities: This project contains utilities from CRM 2011 plugins. Genera/calculate full name of a custom entity given the first, last and middle name.CUDA driver API: Making the CUDA driver API as simple to use as the runtime API. Almost.DBXMLTransfer: Command line application that: 1) extracts xml returned by a stored procedure to a file and 2) passes xml contained in a file to a stored procedure (which can use it for inserts & updates for example)Dot Generator: This is a project I did to generate numbers using the number of the dots in the number it self to get a visual representation of how big larg numbers areDRYlib.Net: DRY (Don't Repeat Yourself) -- or, in other words, code-reuse -- makes me create this Class Library so I don't have to keep creating the same code here and there. Feel free to use these snippets. I'm releasing them under a permissive license (Apache Public License 2.0). The DRYlib is created using Visual BASIC 2010 Express. What you can find in this DRYlib include, but not limited to: * CRC Hash algorithms * Simple, high-performance Integer extensions * Simple, oft-used Stri...DW.Configurations: DW.Configurations - Enables an easy handling of application settings Please see www.my.libraries.de for more information and documentation.DW.Game.MauMau: Its a MauMau game with the possibility to define all rules DW.Game.Sudoku: It's just a Sudoku gameDW.Interactivity: DW.Interactivity - Brings additional functionalities to WPF controls Please see www.my.libraries.de for more information and documentation.DW.Logging: DW.Logging - Supports an easy working with log files Please see www.my.libraries.de for more information and documentation.DW.Services: DW.Services - Brings standard services Please see www.my.libraries.de for more information and documentation.DW.SharpTools: DW.SharpTools - Brings additional possibilities to C# Please see www.my.libraries.de for more information and documentation.DW.UnitTests: DW.UnitTests - Gives some objects for easy UnitTests Please see www.my.libraries.de for more information and documentation.DW.WPFDev: DW.WPFDev - Some useful objects for developing custom controls and behaviors Please see www.my.libraries.de for more information and documentation.DW.WPFToolkit: DW.WPFToolkit - A custom controls library Please see www.my.libraries.de for more information and documentation.Elucidate: A GUI to drive the SnapRAID command line (All supported platforms): Definition: explain in detail Synonyms: annotate, clarify, clear, clear up, decode, demonstrate, enlighten, exemplify, explicate, expound, get across, illuminate, illustrate, interpret, make perfectly clear This will take on the task of creating a SnapRAID GUI to drive it's command line options, but give a little help and clarification (And logging) to guide the novice user.FixWordProperties for Office 2003, 2007 and 2010: Ken Getz originally wrote the FixWordProperties I believe in 2006. I had a a few extra requirements like the ability to unlock locked files, without passwords, using the office interop model, instead of word and a few more things that I needed in the winter of 2007.Information System Alumni Community: Here is our Internet Programming project. This site help alumni to always keep interact with their friends through this site.They can track his friend name, city, occupation and then interact with them to (whoa..like Social Network right!!).Go check this out int main code samples: Repository for all demos/samples posted at http://blog.r2d2rigo.es/english/LarX - XNA Game Engine: LarX is an XNA Game Engine, 2D and 3D, that uses SunBurn for Rendering, sgMotion for animations, and BEPU for Physics. It enables developers to write quicly AAA games.Membership, Role and Profile Providers for develop, debug, test: These ASP.NET providers for Membership, Roles and Profiles are valuable during development, debugging and testing due to the ease of creating, removing and changing users, user roles, etc. Music search engine: Ilovethismusic.com lets you listen & download music based on your mood, weather, or any type of expression you can think of. Just press Play.NicolasLight: This is for business projectOlympic.Magazine: sport supplements e-shop projectProject Obscura: Project Obscura is a game about to be in development by a group of friends, more data soon...RegularExpressionTest: .SalesManagementSystem: SalesManagementSystemShoozla: Very simple and powerful tool to search for missing covers. It finds album covers automatically and periodically. It uses LASTFM web service (website registration needed). WPF Application developed in C# following a MVVM design pattern.Silverlight Mind Map demo: A Mind Map control library and sample application created in Silveright. Although the library can be useful by itself, the main goal of this project is to server as a demo and reference application for Wiki that shows different Silverlight testing techniques. SketchFlow Template for Windows Phone: The SketchFlow Template for Windows Phone adds a new SketchFlow template for Expression Blend users, making it fast and easy to prototype Windows Phone applications.Smart Blog: Smart Blog ????，??ASP.NET??，?????Entity Framework、MVC 3.0(razor)、WCF???。???????SqlCE?????，????????，????、??。 SQLiteManager (sys_27): SQLiteManager makes for manage SQLite Database. It's developed in C#. (WPF and use MVVM-patern)testing access to TFS: This is a just a trivial set of test files to learn about TFS. I am testing each step of this process and will try to document it for others. Maybe this is obvious to others, but I am still learning TFS.TFS NuGetter: NuGetter is a TFS 2010 Build Activity designed to provide packaging and deployment management to projects destined for a NuGet Gallery.

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• Keypress detection wont work after seemingly unrelated code change

  - by LukeZaz

  I'm trying to have the Enter key cause a new 'map' to generate for my game, but for whatever reason after implementing full-screen in it the input check won't work anymore. I tried removing the new code and only pressing one key at a time, but it still won't work. Here's the check code and the method it uses, along with the newMap method: public class Game1 : Microsoft.Xna.Framework.Game { // ... protected override void Update(GameTime gameTime) { // ... // Check if Enter was pressed - if so, generate a new map if (CheckInput(Keys.Enter, 1)) { blocks = newMap(map, blocks, console); } // ... } // Method: Checks if a key is/was pressed public bool CheckInput(Keys key, int checkType) { // Get current keyboard state KeyboardState newState = Keyboard.GetState(); bool retType = false; // Return type if (checkType == 0) { // Check Type: Is key currently down? if (newState.IsKeyDown(key)) { retType = true; } else { retType = false; } } else if (checkType == 1) { // Check Type: Was the key pressed? if (newState.IsKeyDown(key)) { if (!oldState.IsKeyDown(key)) { // Key was just pressed retType = true; } else { // Key was already pressed, return false retType = false; } } } // Save keyboard state oldState = newState; // Return result if (retType == true) { return true; } else { return false; } } // Method: Generate a new map public List<Block> newMap(Map map, List<Block> blockList, Console console) { // Create new map block coordinates List<Vector2> positions = new List<Vector2>(); positions = map.generateMap(console); // Clear list and reallocate memory previously used up by it blockList.Clear(); blockList.TrimExcess(); // Add new blocks to the list using positions created by generateMap() foreach (Vector2 pos in positions) { blockList.Add(new Block() { Position = pos, Texture = dirtTex }); } // Return modified list return blockList; } // ... } and the generateMap code: // Generate a list of Vector2 positions for blocks public List<Vector2> generateMap(Console console, int method = 0) { ScreenTileWidth = gDevice.Viewport.Width / 16; ScreenTileHeight = gDevice.Viewport.Height / 16; maxHeight = gDevice.Viewport.Height; List<Vector2> blockLocations = new List<Vector2>(); if (useScreenSize == true) { Width = ScreenTileWidth; Height = ScreenTileHeight; } else { maxHeight = Height; } int startHeight = -500; // For debugging purposes, the startHeight is set to an // hopefully-unreachable value - if it returns this, something is wrong // Methods of land generation /// <summary> /// Third version land generation /// Generates a base land height as the second version does /// but also generates a 'max change' value which determines how much /// the land can raise or lower by which it now does by a random amount /// during generation /// </summary> if (method == 0) { // Get the land height startHeight = rnd.Next(1, maxHeight); int maxChange = rnd.Next(1, 5); // Amount ground will raise/lower by int curHeight = startHeight; for (int w = 0; w < Width; w++) { // Run a chance to lower/raise ground level int changeBy = rnd.Next(1, maxChange); int doChange = rnd.Next(0, 3); if (doChange == 1 && !(curHeight <= (1 + maxChange))) { curHeight = curHeight - changeBy; } else if (doChange == 2 && !(curHeight >= (29 - maxChange))) { curHeight = curHeight + changeBy; } for (int h = curHeight; h < Height; h++) { // Location variables float x = w * 16; float y = h * 16; blockLocations.Add(new Vector2(x, y)); } } console.newMsg("[INFO] Cur, height change maximum: " + maxChange.ToString()); } /// <summary> /// Second version land generator /// Generates a solid mass of land starting at a random height /// derived from either screen height or provided height value /// </summary> else if (method == 1) { // Get the land height startHeight = rnd.Next(0, 30); for (int w = 0; w < Width; w++) { for (int h = startHeight; h < ScreenTileHeight; h++) { // Location variables float x = w * 16; float y = h * 16; // Add a tile at set location blockLocations.Add(new Vector2(x, y)); } } } /// <summary> /// First version land generator /// Generates land completely randomly either across screen or /// in a box set by Width and Height values /// </summary> else { // For each tile in the map... for (int w = 0; w < Width; w++) { for (int h = 0; h < Height; h++) { // Location variables float x = w * 16; float y = h * 16; // ...decide whether or not to place a tile... if (rnd.Next(0, 2) == 1) { // ...and if so, add a tile at that location. blockLocations.Add(new Vector2(x, y)); } } } } console.newMsg("[INFO] Cur, base height: " + startHeight.ToString()); return blockLocations; } I never touched any of the above code for this when it broke - changing keys won't seem to fix it. Despite this, I have camera movement set inside another Game1 method that uses WASD and works perfectly. All I did was add a few lines of code here: private int BackBufferWidth = 1280; // Added these variables private int BackBufferHeight = 800; public Game1() { graphics = new GraphicsDeviceManager(this); graphics.PreferredBackBufferWidth = BackBufferWidth; // and this graphics.PreferredBackBufferHeight = BackBufferHeight; // this Content.RootDirectory = "Content"; this.graphics.IsFullScreen = true; // and this } When I try adding a console line to be printed in the event the key is pressed, it seems that the If is never even triggered despite the correct key being pressed.

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• How to implement smooth flocking

  - by Craig

  I'm working on a simple survival game, avoid the big guy and chase the the small guys to stay alive for as long as possible. I have taken the chase and evade example from MSDN create and drawn 20 mice on the screen. I want the small guys to flock when they arent evading. They are doing this, but it isnt as smooth as I would like it to be. How do i make the movement smoother? Its very jittery.# Below is what I have going at the moment, flocking code is within the IF statement, when it isnt set to evading. Any help would be greatly appreciated! :) namespace ChaseAndEvade { class MouseSprite { public enum MouseAiState { // evading the cat Evading, // the mouse can't see the "cat", and it's wandering around. Wander } // how fast can the mouse move? public float MaxMouseSpeed = 4.5f; // and how fast can it turn? public float MouseTurnSpeed = 0.20f; // MouseEvadeDistance controls the distance at which the mouse will flee from // cat. If the mouse is further than "MouseEvadeDistance" pixels away, he will // consider himself safe. public float MouseEvadeDistance = 100.0f; // this constant is similar to TankHysteresis. The value is larger than the // tank's hysteresis value because the mouse is faster than the tank: with a // higher velocity, small fluctuations are much more visible. public float MouseHysteresis = 60.0f; public Texture2D mouseTexture; public Vector2 mouseTextureCenter; public Vector2 mousePosition; public MouseAiState mouseState = MouseAiState.Wander; public float mouseOrientation; public Vector2 mouseWanderDirection; int separationImpact = 4; int cohesionImpact = 6; int alignmentImpact = 2; int sensorDistance = 50; public void UpdateMouse(Vector2 position, MouseSprite [] mice, int numberMice, int index) { Vector2 catPosition = position; int enemies = numberMice; // first, calculate how far away the mouse is from the cat, and use that // information to decide how to behave. If they are too close, the mouse // will switch to "active" mode - fleeing. if they are far apart, the mouse // will switch to "idle" mode, where it roams around the screen. // we use a hysteresis constant in the decision making process, as described // in the accompanying doc file. float distanceFromCat = Vector2.Distance(mousePosition, catPosition); // the cat is a safe distance away, so the mouse should idle: if (distanceFromCat > MouseEvadeDistance + MouseHysteresis) { mouseState = MouseAiState.Wander; } // the cat is too close; the mouse should run: else if (distanceFromCat < MouseEvadeDistance - MouseHysteresis) { mouseState = MouseAiState.Evading; } // if neither of those if blocks hit, we are in the "hysteresis" range, // and the mouse will continue doing whatever it is doing now. // the mouse will move at a different speed depending on what state it // is in. when idle it won't move at full speed, but when actively evading // it will move as fast as it can. this variable is used to track which // speed the mouse should be moving. float currentMouseSpeed; // the second step of the Update is to change the mouse's orientation based // on its current state. if (mouseState == MouseAiState.Evading) { // If the mouse is "active," it is trying to evade the cat. The evasion // behavior is accomplished by using the TurnToFace function to turn // towards a point on a straight line facing away from the cat. In other // words, if the cat is point A, and the mouse is point B, the "seek // point" is C. // C // B // A Vector2 seekPosition = 2 * mousePosition - catPosition; // Use the TurnToFace function, which we introduced in the AI Series 1: // Aiming sample, to turn the mouse towards the seekPosition. Now when // the mouse moves forward, it'll be trying to move in a straight line // away from the cat. mouseOrientation = ChaseAndEvadeGame.TurnToFace(mousePosition, seekPosition, mouseOrientation, MouseTurnSpeed); // set currentMouseSpeed to MaxMouseSpeed - the mouse should run as fast // as it can. currentMouseSpeed = MaxMouseSpeed; } else { // if the mouse isn't trying to evade the cat, it should just meander // around the screen. we'll use the Wander function, which the mouse and // tank share, to accomplish this. mouseWanderDirection and // mouseOrientation are passed by ref so that the wander function can // modify them. for more information on ref parameters, see // http://msdn2.microsoft.com/en-us/library/14akc2c7(VS.80).aspx ChaseAndEvadeGame.Wander(mousePosition, ref mouseWanderDirection, ref mouseOrientation, MouseTurnSpeed); // if the mouse is wandering, it should only move at 25% of its maximum // speed. currentMouseSpeed = .25f * MaxMouseSpeed; Vector2 separate = Vector2.Zero; Vector2 moveCloser = Vector2.Zero; Vector2 moveAligned = Vector2.Zero; // What the AI does when it sees other AIs for (int j = 0; j < enemies; j++) { if (index != j) { // Calculate a vector towards another AI Vector2 separation = mice[index].mousePosition - mice[j].mousePosition; // Only react if other AI is within a certain distance if ((separation.Length() < this.sensorDistance) & (separation.Length()> 0) ) { moveAligned += mice[j].mouseWanderDirection; float distance = Math.Abs(separation.Length()); if (distance == 0) distance = 1; moveCloser += mice[j].mousePosition; separation.Normalize(); separate += separation / distance; } } } if (moveAligned.LengthSquared() != 0) { moveAligned.Normalize(); } if (moveCloser.LengthSquared() != 0) { moveCloser.Normalize(); } moveCloser /= enemies; mice[index].mousePosition += (separate * separationImpact) + (moveCloser * cohesionImpact) + (moveAligned * alignmentImpact); } // The final step is to move the mouse forward based on its current // orientation. First, we construct a "heading" vector from the orientation // angle. To do this, we'll use Cosine and Sine to tell us the x and y // components of the heading vector. See the accompanying doc for more // information. Vector2 heading = new Vector2( (float)Math.Cos(mouseOrientation), (float)Math.Sin(mouseOrientation)); // by multiplying the heading and speed, we can get a velocity vector. the // velocity vector is then added to the mouse's current position, moving him // forward. mousePosition += heading * currentMouseSpeed; } } }

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