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  • Generic FSM for game in C++ ?

    - by Mr.Gando
    Hello, I was wondering if there's a way I could code some kind of "generic" FSM for a game with C++?. My game has a component oriented design, so I use a FSM Component. my Finite State Machine (FSM) Component, looks more or less this way. class gecFSM : public gecBehaviour { public: //Constructors gecFSM() { state = kEntityState_walk; } gecFSM(kEntityState s) { state = s; } //Interface void setRule(kEntityState initialState, int inputAction, kEntityState resultingState); void performAction(int action); private: kEntityState fsmTable[MAX_STATES][MAX_ACTIONS]; }; I would love to hear your opinions/ideas or suggestions about how to make this FSM component, generic. With generic I mean: 1) Creating the fsmTable from an xml file is really easy, I mean it's just a bunch of integers that can be loaded to create an MAX_STATESxMAX_ACTION matrix. void gecFSM::setRule(kEntityState initialState, int inputAction, kEntityState resultingState) { fsmTable[initialState][inputAction] = resultingState; } 2) But what about the "perform Action" method ? void gecFSM::performAction(int action) { switch( smTable[ ownerEntity->getState() ][ action ] ) { case WALK: /*Walk action*/ break; case STAND: /*Stand action*/ break; case JUMP: /*Jump action*/ break; case RUN: /*Run action*/ break; } } What if I wanted to make the "actions" and the switch generic? This in order to avoid creating a different FSM component class for each GameEntity? (gecFSMZombie, gecFSMDryad, gecFSMBoss etc ?). That would allow me to go "Data Driven" and construct my generic FSM's from files for example. What do you people suggest?

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  • Which Java web frameworks provide hot-reload?

    - by Stefane Fermigier
    I'd like to know which Java web application frameworks do provide a "hot reload" capability, i.e. allow to develop applications and have them redeployed on the server "almost instantly" (i.e. in less than a few seconds). I the Java world, Play! has it out of the box, but what I'm looking for is a more exhaustive list. Other examples that I'm aware of include: Nuxeo WebEngine, provided you're using Eclipse and the right plugin, or, in the Python world, Django and Pylons (when using the "--reload" option).

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  • Google Chrome and (cache or memory leaks).

    - by Alexey Ogarkov
    Hello All, I have a big problem with Google Chrome and its memory. My app is displaying to user several image charts and reloads them every 10s. In the interval i have code like that var image = new Image(); var src = 'myurl/image'+new Date().getTime(); image.onload = function() { document.getElementById('myimage').src = src; image.onload = image.onabort = image.onerror = null; } image.src = src; So i have no memory leaks in Firefox and IE. Here the response headers for images Server Apache-Coyote/1.1 Vary * Cache-Control no-store (// I try no-cache, must-revalidate and so on here) Content-Type image/png Content-Length 11131 Date Mon, 31 May 2010 14:00:28 GMT Vary * taken from here In about:cache page there is no my cached images. If i enable purge-memory-button for chrome (--purge-memory-button parameter) it`s not help. Images is in PNG24. So i think that the problem is not in cache. May be Google Chrome is not releasing memory for old images. Please help. Any suggestions. Thanks.

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  • ASP.NET MVC Actions that return different views, or just make a ton of Actions?

    - by Nate Bross
    So, I am in a situation, where I need to display a different view based on the "Role" that the authenticated user has. I'm wondering which approach is best here: [Authorize(Roles="Admin")] public ActionResult AdminList(int? divID, int? subDivID) { var data = GetListItems(divID.Value, subDivID.Value); return View(data); } [Authorize(Roles = "Consultant")] public ActionResult ConsultantList(int? divID, int? subDivID) { var data = GetListItems(divID.Value, subDivID.Value); return View(data); } or should I do something like this [Authorize] public ActionResult List(int? divID, int? subDivID) { var data = GetListItems(divID.Value, subDivID.Value); if(HttpContenxt.User.IsInRole("Admin") { return View("AdminList", data ); } if(HttpContenxt.User.IsInRole("Consultant") { return View("ConsultantList", data ); } return View("NotFound"); }

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  • Best Method for "Back Button"

    - by CitadelCSCadet
    I'm working on a web application using JSP/Servlets, etc. And I have a lot of form progression. I am aware of some ways to use the "Back" functionality, but I am not sure if its efficient enough. What are the best ways to implement this? Does it Involve using the session object? or just the request? or neither?

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  • unresolved external symbol _D3D10CreateDeviceAndSwapChain@32 referenced in function "public: bool

    - by numerical25
    Having trouble creating my swap chain. I receive the following error. DX3dApp.obj : error LNK2019: unresolved external symbol _D3D10CreateDeviceAndSwapChain@32 referenced in function "public: bool __thiscall DX3dApp::InitDirect3D(void)" (?InitDirect3D@DX3dApp@@QAE_NXZ) Below is the code ive done so far. #include "DX3dApp.h" bool DX3dApp::Init(HINSTANCE hInstance, int width, int height) { mhInst = hInstance; mWidth = width; mHeight = height; if(!WindowsInit()) { return false; } if(!InitDirect3D()) { return false; } } int DX3dApp::Run() { MSG msg = {0}; while (WM_QUIT != msg.message) { while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE) == TRUE) { TranslateMessage(&msg); DispatchMessage(&msg); } Render(); } return (int) msg.wParam; } bool DX3dApp::WindowsInit() { WNDCLASSEX wcex; wcex.cbSize = sizeof(WNDCLASSEX); wcex.style = CS_HREDRAW | CS_VREDRAW; wcex.lpfnWndProc = (WNDPROC)WndProc; wcex.cbClsExtra = 0; wcex.cbWndExtra = 0; wcex.hInstance = mhInst; wcex.hIcon = 0; wcex.hCursor = LoadCursor(NULL, IDC_ARROW); wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1); wcex.lpszMenuName = NULL; wcex.lpszClassName = TEXT("DirectXExample"); wcex.hIconSm = 0; RegisterClassEx(&wcex); // Resize the window RECT rect = { 0, 0, mWidth, mHeight }; AdjustWindowRect(&rect, WS_OVERLAPPEDWINDOW, FALSE); // create the window from the class above mMainhWnd = CreateWindow(TEXT("DirectXExample"), TEXT("DirectXExample"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, rect.right - rect.left, rect.bottom - rect.top, NULL, NULL, mhInst, NULL); if (!mMainhWnd) { return false; } ShowWindow(mMainhWnd, SW_SHOW); UpdateWindow(mMainhWnd); return true; } bool DX3dApp::InitDirect3D() { DXGI_SWAP_CHAIN_DESC scd; ZeroMemory(&scd, sizeof(scd)); scd.BufferCount = 1; scd.BufferDesc.Width = mWidth; scd.BufferDesc.Height = mHeight; scd.BufferDesc.Format = DXGI_FORMAT_B8G8R8A8_UNORM; scd.BufferDesc.RefreshRate.Numerator = 60; scd.BufferDesc.RefreshRate.Denominator = 1; scd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT; scd.OutputWindow = mMainhWnd; scd.SampleDesc.Count = 1; scd.SampleDesc.Quality = 0; scd.Windowed = TRUE; HRESULT hr = D3D10CreateDeviceAndSwapChain(NULL,D3D10_DRIVER_TYPE_REFERENCE, NULL, 0, D3D10_SDK_VERSION, &scd, &mpSwapChain, &mpD3DDevice); if(!hr != S_OK) { return FALSE; } ID3D10Texture2D *pBackBuffer; return TRUE; } void DX3dApp::Render() { } LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) { switch (message) { // Allow the user to press the escape key to end the application case WM_KEYDOWN: switch(wParam) { // Check if the user hit the escape key case VK_ESCAPE: PostQuitMessage(0); break; } break; // The user hit the close button, close the application case WM_DESTROY: PostQuitMessage(0); break; } return DefWindowProc(hWnd, message, wParam, lParam); }

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  • amazon design doubt

    - by praveen
    I was looking at the amazon website and was wondering how one of the feature would have been implemented. The feature : what customers buy after viewing a particular item. If i were to develop such a feature i would probably generate a session id for each user session and store the session id-page id combination in a log file. and if a book is bought set a separate flag for the session id-page id. A separate program can then be run on the log file periodically, to identify the groups that were bought together/viewed together and that information can be stored in a persistent file. This is ofcourse a simple solution without taking into consideration the distributed nature of the servers - but would this suffice or can you help me identify a better design.

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  • How do you land your "side gigs"?

    - by DotNetJayHawk
    I work full time as a .Net programmer in Kansas City. I would like to start picking up some side gigs for extra cash. Anyone else doing this? How are you finding the opportunities? Any tips, suggestions, advice would be greatly appreciated.

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  • When to databind data-bound controls?

    - by sanjuro
    Hi, i have little dilemma, i often use data-bound controls such as Gridview in conjunction with ObjectDataSource. But i have two possible options when can i bind data to Gridview. The first is that i set datasourceid of gridview in aspx file and databind occurs in a moment before PreRender event occurs or i can set datasource in Page_Load event and databinding occurs immediately, something like this: protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { testGridView.DataSource = testObjectDataSource.Select(); testGridView.DataBind(); } } I think that in second approach i have more control above databinding. But how it is in real programming life? Which of the above two options is commonly used? Or is there some third option how can i bind data to data-bound control? Thanks for your opinions from real-life experiences.

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  • Basic xhtml/css models ?

    - by Skeptic
    Hi, I need to produce a very simple website (no dynamic-content, 2-columns, header&footer) and I have a basic knowledge of xhtml/css. So I could probably come with something from scratch, but it would probably won't work in "all" browsers. I've done some googling, but it's difficult for me to evaluate the quality of the "free templates" advertized all over the place. So is there any web developer here that has good references or even such models/templates ?

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  • How do I modify this jQuery :submit selector example?

    - by Tommy
    Looking at this jQuery example, how can I modify the code so that it only changes the color of the cell if the value of the submit button in that cell is a certain value. i.e.- var submitEl = $("td :submit") //Only do the below if the submit buttons value is "XYZ" .parent('td') .css({background:"yellow", border:"3px red solid"})

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  • How to get collision between two meshes in j2me 3d game

    - by Rishabh
    Hi, I am making an application for 3d ball balancing game on j2me, I need to move my 3d ball on my ball path. I can get both ball and path object as a mesh from m3g file. How I will know that my ball is in the path or not ? Is there any notification I can get for interaction of two meshes ? Thanks in advance...

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  • measuring performance - using real clicks vs "ab" command

    - by shanyu
    I have a web site in closed beta, developed in Django, runs with Mysql on Debian. In the last few days, the main page has been showing a slowdown. For every ten clicks, one or two receives extremely slow response (10 secs or more), others are as fast as they used to be. When I was searching for the problem, I ran into this issue that I couldn't grasp: top command shows that when I request the main page, mysql shoots up to 90% - 100% cpu usage. I get the page just as the cpu use gets back to normal. So, I thought, it is db. Then I called ab with parameters -n 1000 -c 5, I got decent performance, about 100 pages per second, just as it was before the slowdown. I would imagine a worse performance as 10-20% of requests take 10 secs to load. Is this conflict between ab and "real" clicks normal, or am I using ab in a wrong configuration?

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  • What are the advantages and disadvantages of a web site that contains a single page ?

    - by Misha Moroshko
    I would like to code a little web site that will contain several sections like "Home", "Gallery", "Contact Us", "FAQs", and so on. I thought to do this in one HTML by putting each section in a div and show only one div per time (using Javascript / jQuery), based on the chosen menu button. Alternatively, I could create a separate HTML page per section, and link these pages to the menu buttons. What are the advantages and disadvantages of these two methods ?

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  • How to let one external stylsheet selectively overrule the other

    - by Ferdy
    I'm stunned by a simple thing that I want to accomplish but does not work. I have a website and I want it to support themes, which are a named set of CSS + images. No matter which theme is selected, I always include the main CSS file, which is the default theme. On top of that I'm loading a second stylesheet, the one that is theme-specific, like so: <link rel="stylesheet" type="text/css" href="css/main.css" title=main" media="screen" /> <link rel="stylesheet" type="text/css" href="themes/<?= $style ?>/css/<?= $style ?>.css" title="<?= $style ?>" media="screen" /> My idea is that the theme specific css should not be a full copy of the main css file. Instead, it should only contain CSS rules that overrule those of the main.css file. This makes themes much smaller and easier to maintain. I thought I could simply load two external stylesheets after each other and that for conflicting rules it will always use the theme specific css, the second file. However, it does not seem to work. If I make a dramatic styling change in the theme file then it has no effect. If I then comment the main CSS file, the theme CSS does have effect. Was I too naive in expecting this to work like this? I know I can use inline styles to overrule anything, but I prefer a setup like this if possible.

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