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  • php server settings for restrict post queries

    - by Korjavin Ivan
    I have php script on hosting, which receive big data with ajax/post. Just now, after some works on hosting, I see that script is broken. I checked with curl: file temp1: user_avatar=&user_baner=&user_sig=.... 237 chars total, and curl -H "X-Requested-With: XMLHttpRequest" -X POST --data @temp1 'http://host/mypage.php' works perfect. But with file temp2: name=%D0%9C%D0%B5%D0%B1%%B5%D0%BB%D1%8C%D0%A4%%B0%D0%B1%D1%80%D0%B8%D0%BA%D1%8A&user_payed=0000-00-00&...positions%5B5231%5D=on total chars: 65563 curl -H "X-Requested-With: XMLHttpRequest" -X POST --data @temp2 'http://host/mypage.php' curl return nothing. Looks like a problem with apache/php/php.ini or something like that. I check .htaccess php_value post_max_size 20M Which other parameters I should check? Is it possible that %BO encode kill php/apache? Or total number of parameters (about 2800) ?

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  • Large Queries in Google

    - by marienbad
    I have a large query I want to do in google. It's just a string of OR's for the purpose of determining which search terms are ranked the highest compared to the others. It's not ABSURDLY large -- it's only 5,500 characters. But Google says: Request-URI Too Large The requested URL /search... is too large to process. Is there a way around?

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  • Dynamic User Specific CSS Selection at Run Time

    I had a cool question while I was at MIX. A developer needed the ability to have his site render pages using a CSS file selected based on some user specific criteria. ASP.NET 4 controls generate CSS friendly output and more and more we web developers are using CSS for layout etc. Using multiple CSS files in our site wide templates we can not only provide different aesthetic experiences but we can chage the style based on the device type (Printer ot Phone) or the special needs of the end user...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Turn-based tile game dynamic item/skill/command script files

    - by user1542
    I want to create a mechanism that could read text script, for example some kind of custom script such as ".skill" or ".item", which maybe contain some sort of simple script like .item Item.Name = "Strength Gauntlet"; Character.STR += 20; .. .skill Skill.Name = "Poison Attack"; Skill.Description = "Steal HP and inflict poison"; Player.HP += 200; Enemy.HP -= 200; Enemy.Status += Status.POISON; It may be different from this, but just want to give some idea of what I desire. However, I do not know how to dynamically parse these things and translate it into working script. For example, in battle scenerio, I should make my game read one of this ".skill" file and apply it to the current enemy, or the current player. How would I do this? Should I go for String parsing? It is like a script engine, but I prefer C# than creating new language, so how would I parse custom files into appropiate status commands? Another problem is, I have also created a command engine which would read String input and parse it into action such as "MOVE (1,2)" would move character to tile (1,2). Each command belong to separate class, and provide generic parsing method that should be implemented by hand. This is for the reason of custom number/type of arguments per each command. However, I think this is not well designed, because I desire it to automatically parse the parameters according to specify list of types. For example, MOVE command in "MOVE 1 2" would automatically parse the parameters into int, int and put it into X and Y. Now, this form can change, and we should be able to manually specify all type of formats. Any suggestion to this problem? Should I change from string parsing to some hardcode methods/classes?

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  • Dynamic Number Table

    - by Derek D.
    Using a numbers table is helpful for many things. Like finding gaps in a supposed sequence of primary keys, or generating date ranges or any numerical range. In some cases, you will be in a production system that does not already contain a numbers table and you will also be unable to add [...]

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  • Dynamic filter expressions in an OpenAccess LINQ query

    We had some support questions recently where our customers had the need to combine multiple smaller predicate expressions with either an OR or an AND  logical operators (these will be the || and && operators if you are using C#). And because the code from the answer that we sent to these customers is very interesting, and can easily be refactorred into something reusable, we decided to write this blog post. The key thing that one must know is that if you want your predicate to be translated by OpenAccess ORM to SQL and executed on the server you must have a LINQ Expression that is not compiled. So, let’s say that you have these smaller predicate expressions: Expression<Func<Customer, bool>> filter1 = c => c.City.StartsWith("S");Expression<Func<Customer, bool>> filter2 = c => c.City.StartsWith("M");Expression<Func<Customer, bool>> filter3 = c => c.ContactTitle == "Owner"; And ...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Creating sitemap for Googlebot - how to mark dynamic content / dynamic subpages?

    - by ojek
    I have a website that is an Internet forum. This forum has many categories, and a single category page that contains a lot of subpages with listed threads. This Internet forum is brand new, and about a week ago I filled it with a few hundred thousand threads. I then looked at my Google Webmasters Tools page to see any changes in indexing, but the index went up from 300 to about 1200, so that means it did not index my added threads (although it added something). The following is what my sitemap.xml contains, which I uploaded to their website. Of course there is a lot more code, this is just a snippet for a single category. In my real sitemap file I have all the categories listed as below: <url> <loc>http://mysite.com/Forums/Physics</loc> <changefreq>hourly</changefreq> </url> Now, I would expect Googlebot to go into mysite.com/Forums/Physics, and crawl through all the subpages with thread links, and then crawl inside of each thread and index its content. How can I achieve this? Also if this is unclear, I will add a real link to my website.

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  • Dynamic Ranking with Excel and PowerPivot

    - by AlbertoFerrari
    Ranking is useful and, in our book , I and Marco provide a lot of information about how to perform ranking with PowerPivot. Nevertheless, there is an interesting scenario where ranking can be performed without complex DAX formulas, but with just some creative Excel usage. I would like to describe it here. Let us start with some words about the scenario: we want to rank products based on sales in a year (e.g. 2002) and see how the top 10 of these products performed in the following or preceding years....(read more)

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  • Redirecting to a dynamic page

    - by binarydev
    I have a page displaying blog posts (latest_posts.php) and another page that display single blog posts (blog.php) . I intend to link the image title in latest_posts.php so that it redirects to blog.php where it would display the particular post that was clicked. latest_posts.php: <!-- Header --> <h2 class="underline"> <span>What&#039;s new</span> <span></span> </h2> <!-- /Header --> <!-- Posts list --> <ul class="post-list post-list-1"> <?php /* Fetches Date/Time, Post Content and title */ include 'dbconnect.php'; $sql = "SELECT * FROM wp_posts"; $res = mysql_query($sql); while ( $row = mysql_fetch_array($res) ) { ?> <!-- Post #1 --> <li class="clear-fix"> <!-- Date --> <div class="post-list-date"> <div class="post-date-box"> <?php //Timestamp broken down to show accordingly $timestamp = $row['post_date']; $datetime = new DateTime($timestamp); $date = $datetime->format("d"); $month = $datetime->format("M"); ?> <h3> <?php echo $date; ?> </h3> <span> <?php echo $month; ?> </span> </div> </div> <!-- /Date --> <!-- Image + comments count --> <div class="post-list-image"> <!-- Image --> <div class="image image-overlay-url image-fancybox-url"> <a href="post.php" class="preloader-image"> <?php echo '<img src="', $row['image'], '" alt="' , $row['post_title'] , '\'s Blog Image" />'; ?> </a> </div> <!-- /Image --> </div> <!-- /Image + comments count --> <!-- Content --> <div class="post-list-content"> <div> <!-- Header --> <h4> <a href="post.php? . $row['ID'] . "> <?php echo $row['post_title']; ?> </a> </h4> <!-- /Header --> <!-- Excerpt --> <p> <?php echo $row ['post_content']; }?> </p> <!-- /Excerpt --> </div> </div> <!-- /Content --> </li> <!-- /Post #1 --> </ul> <!-- /Posts list --> <a href="blog.php" class="button-browse">Browse All Posts</a> </div> <?php require_once('include/twitter_user_timeline.php'); ?> blog.php: <?php require_once('include/header.php'); ?> <body class="blog"> <?php require_once('include/navigation_bar_blog.php'); ?> <div class="blog"> <div class="main"> <!-- Header --> <h2 class="underline"> <span>What&#039;s new</span> <span></span> </h2> <!-- /Header --> <!-- Layout 66x33 --> <div class="layout-p-66x33 clear-fix"> <!-- Left column --> <!-- <div class="column-left"> --> <!-- Posts list --> <ul class="post-list post-list-2"> <?php /* Fetches Date/Time, Post Content and title with Pagination */ include 'dbconnect.php'; //sets to default page if(empty($_GET['pn'])){ $page=1; } else { $page = $_GET['pn']; } // Index of the page $index = ($page-1)*3; $sql = "SELECT * FROM `wp_posts` ORDER BY `post_date` DESC LIMIT " . $index . " ,3"; $res = mysql_query($sql); //Loops through the values while ( $row = mysql_fetch_array($res) ) { ?> <!-- Post #1 --> <li class="clear-fix"> <!-- Date --> <div class="post-list-date"> <div class="post-date-box"> <?php //Timestamp broken down to show accordingly $timestamp = $row['post_date']; $datetime = new DateTime($timestamp); $date = $datetime->format("d"); $month = $datetime->format("M"); ?> <h3> <?php echo $date; ?> </h3> <span> <?php echo $month; ?> </span> </div> </div> <!-- /Date --> <!-- Image + comments count --> <div class="post-list-image"> <!-- Image --> <div class="image image-overlay-url image-fancybox-url"> <a href="post.php" class="preloader-image"> <?php echo '<img src="', $row['image'], '" alt="' , $row['post_title'] , '\'s Blog Image" />'; ?> </a> </div> <!-- /Image --> </div> <!-- /Image + comments count --> <!-- Content --> <div class="post-list-content"> <div> <?php $id = $_GET['ID']; $post = lookup_post_somehow($id); if($post) { // render post } else { echo 'blog post not found..'; } ?> <!-- Header --> <h4> <a href="post.php"> <?php echo $row['post_title']; ?> </a> </h4> <!-- /Header --> <!-- Excerpt --> <p> <?php echo $row ['post_content']; ?> </p> <!-- /Excerpt --> </div> </div> <!-- /Content --> </li> <!-- /Post #1 --> <?php } // close while loop ?> </ul> <!-- /Posts list --> <div><!-- Pagination --> <ul class="blog-pagination clear-fix"> <?php //Count the number of rows $numberofrows = mysql_query("SELECT COUNT(ID) FROM `wp_posts`"); //Do ciel() to round the result according to number of posts $postsperpage = 4; $numOfPages = ceil($numberofrows / $postsperpage); for($i=1; $i < $numOfPages; $i++) { //echos links for each page $paginationDisplay = '<li><a href="blog.php?pn=' . $i . '">' . $i . '</a></li>'; echo $paginationDisplay; } ?> <!-- <li><a href="#" class="selected">1</a></li> <li><a href="#">2</a></li> <li><a href="#">3</a></li> <li><a href="#">4</a></li> --> </ul> </div><!-- /Pagination --> <!-- /div> --> <!-- Left column --> </div> <!-- /Layout 66x33 --> </div> </div> <?php require_once('include/twitter_user_timeline.php'); ?> <?php require_once('include/footer_blog.php'); ?> How do I render?

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  • Dynamic audio score/music

    - by Joel Martinez
    I'm interested in developing a game who's background music changes with the mood and scenario of the game's action. Of course many existing games do this (halo for example), but I was interested in any resources/papers/articles talking about the techniques to develop a system like this. I have some ideas, and I understand that this will be equally challenging to implement at the code level as it will be to come up or acquire music that fits this model. Any links or, answers with ideas in them would he appreciated. Edit: this is the kind of info I'm looking for :) http://halo.bungie.org/misc/gdc.2002.music/

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  • sorting dynamic table created by form inputs [migrated]

    - by mille
    i am having problems with sorting can someone help to sort this table not just by its form entry id but onclick with some other columns i tried a lot of plugins but cant get anything to work and i dont know what to do i am new at this i sorry for my english thanks. here is the js: var Animals ={ index: window.localStorage.getItem("Animals:index"), $table: document.getElementById("animals-table"), $form: document.getElementById("animals-form"), $button_save: document.getElementById("animals-save"), $button_discard: document.getElementById("animals-discard"), init: function() { if (!Animals.index) { window.localStorage.setItem("Animals:index", Animals.index = 1); } Animals.$form.reset(); Animals.$button_discard.addEventListener("click", function(event) { Animals.$form.reset(); Animals.$form.id_entry.value = 0; }, true); Animals.$form.addEventListener("submit", function(event) { var entry = { id: parseInt(this.id_entry.value), animal_id:this.animal_id.value, animal_name: this.animal_name.value, animal_type: this.animal_type.value, bday: this.bday.value, animal_sex: this.animal_sex.value, mother_name: this.mother_name.value, farm_name: this.farm_name.value, money: this.money.value, weight: this.weight.value, purchase_partner: this.purchase_partner.value }; if (entry.id === 0) { Animals.storeAdd(entry); Animals.tableAdd(entry); } else { // edit Animals.storeEdit(entry); Animals.tableEdit(entry); } this.reset(); this.id_entry.value = 0; event.preventDefault(); }, true); if (window.localStorage.length - 1) { var animals_list = [], i, key; for (i = 0; i < window.localStorage.length; i++) { key = window.localStorage.key(i); if (/Animals:\d+/.test(key)) { animals_list.push(JSON.parse(window.localStorage.getItem(key))); } } if (animals_list.length) { animals_list.sort(function(a, b) {return a.id < b.id ? -1 : (a.id > b.id ? 1 : 0);}) .forEach(Animals.tableAdd);} Animals.$table.addEventListener("click", function(event) { var op = event.target.getAttribute("data-op"); if (/edit|remove/.test(op)) { var entry = JSON.parse(window.localStorage.getItem("Animals:"+ event.target.getAttribute("data- id"))); if (op == "edit") { Animals.$form.id_entry.value = entry.id; Animals.$form.animal_id.value = entry.animal_id; Animals.$form.animal_name.value = entry.animal_name; Animals.$form.animal_type.value = entry.animal_type; Animals.$form.bday.value = entry.bday; Animals.$form.animal_sex.value = entry.animal_sex; Animals.$form.mother_name.value = entry.mother_name; Animals.$form.farm_name.value = entry.farm_name; Animals.$form.money.value = entry.money; Animals.$form.weight.value = entry.weight; Animals.$form.purchase_partner.value = entry.purchase_partner; } else if (op == "remove") { if (confirm('Are you sure you want to remove this animal from your list?' )) { Animals.storeRemove(entry); Animals.tableRemove(entry); } } event.preventDefault(); } }, true); }, storeAdd: function(entry) { entry.id = Animals.index; window.localStorage.setItem("Animals:index", ++Animals.index); window.localStorage.setItem("Animals:"+ entry.id, JSON.stringify(entry)); }, storeEdit: function(entry) { window.localStorage.setItem("Animals:"+ entry.id, JSON.stringify(entry)); }, storeRemove: function(entry) { window.localStorage.removeItem("Animals:"+ entry.id); }, tableAdd: function(entry) { var $tr = document.createElement("tr"), $td, key; for (key in entry) { if (entry.hasOwnProperty(key)) { $td = document.createElement("td"); $td.appendChild(document.createTextNode(entry[key])); $tr.appendChild($td); } } $td = document.createElement("td"); $td.innerHTML = '<a data-op="edit" data-id="'+ entry.id +'">Edit</a> | <a data-op="remove" data-id="'+ entry.id +'">Remove</a>'; $tr.appendChild($td); $tr.setAttribute("id", "entry-"+ entry.id); Animals.$table.appendChild($tr); }, tableEdit: function(entry) { var $tr = document.getElementById("entry-"+ entry.id), $td, key; $tr.innerHTML = ""; for (key in entry) { if (entry.hasOwnProperty(key)) { $td = document.createElement("td"); $td.appendChild(document.createTextNode(entry[key])); $tr.appendChild($td); } } $td = document.createElement("td"); $td.innerHTML = '<a data-op="edit" data-id="'+ entry.id +'">Edit</a> | <a data-op="remove" data-id="'+ entry.id +'">Remove</a>'; $tr.appendChild($td); }, tableRemove: function(entry) { Animals.$table.removeChild(document.getElementById("entry-"+ entry.id)); } }; Animals.init();

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  • Dynamic Terrain Texture

    - by lgrevenl
    I've been looking at a 2D physics game called 'Hill Climb Racing' (Android and iOS) and was wondering how they went about texturing the terrain? I've had a think about it and I've come up with nothing and finding a resource on the web has proved impossible. Please help. The game mentioned uses Cocos2d. Would it be just as doable in a different environment? EDIT: I was looking at another question: Drawing large 2D sidescroller level terrain The end result is what I'm looking for, but in my mind I was thinking that there would be some way to add this effect (using small textures) to some terrain specified by vertices rather than making a very large image to match whatever is seen in the level.

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  • AD, Windows-NT Authentication queries

    - by rockbala
    Need Help on the following questions. When a users login (on a computer in the network) is validated against AD what is/are the authentication method used? When a users login is validated in Windows NT environment (not AD) what is/are the authentication method used? If all user's account is on AD, is it possible to change the authentication mechanism only (or protocols) from AD to NT and vice versa (if possible)? If part/whole of question 3 is valid, where should one look to change these authentication methods ? What is the difference between AD and Windows-NT authentication ? Windows server 2008 Domain controller used. Regards, Balaji

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  • Mapping dynamic buffers in Direct3D11 in Windows Store apps

    - by Donnie
    I'm trying to make instanced geometry in Direct3D11, and the ID3D11DeviceContext1->Map() call is failing with the very helpful error of "Invalid Parameter" when I'm attempting to update the instance buffer. The buffer is declared as a member variable: Microsoft::WRL::ComPtr<ID3D11Buffer> m_instanceBuffer; Then I create it (which succeeds): D3D11_BUFFER_DESC instanceDesc; ZeroMemory(&instanceDesc, sizeof(D3D11_BUFFER_DESC)); instanceDesc.Usage = D3D11_USAGE_DYNAMIC; instanceDesc.ByteWidth = sizeof(InstanceData) * MAX_INSTANCE_COUNT; instanceDesc.BindFlags = D3D11_BIND_VERTEX_BUFFER; instanceDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE; instanceDesc.MiscFlags = 0; instanceDesc.StructureByteStride = 0; DX::ThrowIfFailed(d3dDevice->CreateBuffer(&instanceDesc, NULL, &m_instanceBuffer)); However, when I try to map it: D3D11_MAPPED_SUBRESOURCE inst; DX::ThrowIfFailed(d3dContext->Map(m_instanceBuffer.Get(), 0, D3D11_MAP_WRITE, 0, &inst)); The map call fails with E_INVALIDARG. Nothing is NULL incorrectly, and this being one of my first D3D apps I'm currently stumped on what to do next to track it down. I'm thinking I must be creating the buffer incorrectly, but I can't see how. Any input would be appreciated.

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  • how to log trigger intiated CRUD queries on postgresql 8.4

    - by user47650
    in the postgresql config file there is an option log_statement = 'mod' which causes CRUD statements to be logged. However this does not include the CRUD statements that are called from trigger functions, which means that following the log file is not useful to determine what changes are being made to the database data, if the 3rd part application has been making lots of changes using triggers. Is there some other option I can use to include trigger CRUD? alternatively, can I inspect the pg_xlog in real time using some tool? (xlogdump and xlogviewer do not work with version 8.4, i have tried)

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  • 2D water with dynamic waves

    - by user1103457
    New Super Mario Bros has really cool 2D water that I'd like to learn how to create. Here's a video showing it. When something hits the water, it creates a wave. There are also constant "background" waves. You can get a good look at the constant waves just after 00:50 when the camera isn't moving. I assume the splashes in NSMB work as in the first part of this tutorial. But in NSMB the water also has constant waves on the surface, and the splashes look very different. Another difference is that in the tutorial, if you create a splash, it first creates a deep "hole" in the water at the origin of the splash. In new super mario bros this hole is absent or much smaller. I am referring to the splashes that the player creates when jumping in and out of the water. How do they create the constant waves and the splashes? I am especially interested in the splashes, and how they work together with the constant waves. I am programming in XNA. I've tried this myself, but couldn't really get it all to work well together. Bonus questions: How do they create the light spots just under the surface of the waves and how do they texture the deeper parts of the water? This is the first time I try to create water like this. EDIT: I assume the constant waves are created using a sine function. The splashes are probably created in a way like in the tutorial. (But they are not the same, so I am still interested in how to make this kind of splashes) But I have a lot of trouble combining those things. I know I can use the sine function to set the height of a specific watercolumn but the splashes are using the speed, to determine the new height. I can't figure out how to combine those. Not that I am not asking how the developers of new super mario bros did this exactly. I am just interested in ways to recreate an effect like it. This week I have an examweek so I don't have time to work on the code. After this week I will spend a lot of time on it. But I am constantly thinking about it, so that's why I will be checking comments etc. I just won't be looking at the code since it might be too time-consuming.

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  • Dynamic URL of asp.net web service with web reference

    - by Jalpesh P. Vadgama
    It’s been a while I am writing this. But never late.. So I am writing this. Before some time one of friend asked about the URL of web service when we add reference. So I am writing this. Some of you may find this very basic but still many of people does not know this that’s why I am writing this. In today’s world we have so many servers like development, preproduction and production etc. and for all the server location or URL of web service will be different.But with asp.net when you add a web reference to your web application it’s create a web reference settings in web.config where you can change this path. So it’s very easy to just change that path and you don’t have to add web reference again. Read More

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  • Extremely high mysqld CPU usage with no active queries

    - by RadarNyan
    I have a VPS running Ubuntu 12.04 LTS with LEMP stack, followed the guide from Linode Library (since I'm using a Linode) to setup, and everything worked fine until now. I don't know what's wrong, but my CPU usage just goes up since a week ago. Today things getting really bad - I got 74% CPU usage so I went check and found that mysqld taking too much CPU usage (somewhere around 30% ~ 80%) So I did some Google Search, tried disable InnoDB, restart mysql, reset ntp / system clock (Isn't this bug supposed to happen more than a year ago?!) and reboot my VPS, nothing helped. Even with mysql processlist empty, I still get mysqld CPU usage very high. I don't know what I missed and have totally no idea, any advice would be appreciated. Thanks in advance. Update: I got these from running "strace mysqld" write(2, "InnoDB: Unable to lock ./ibdata1"..., 44) = 44 write(2, "InnoDB: Check that you do not al"..., 115) = 115 select(0, NULL, NULL, NULL, {1, 0}^[[A^[[A) = 0 (Timeout) fcntl64(3, F_SETLK64, {type=F_WRLCK, whence=SEEK_SET, start=0, len=0}, 0xbfa496f8) = -1 EAGAIN (Resource temporarily unavailable) hum... I did tried to disable InnoDB and it didn't fix this problem. Any idea? Update2: # ps -e | grep mysqld 13099 ? 00:00:20 mysqld then use "strace -p 13099", the following lines appears repeatedly: fcntl64(12, F_GETFL) = 0x2 (flags O_RDWR) fcntl64(12, F_SETFL, O_RDWR|O_NONBLOCK) = 0 accept(12, {sa_family=AF_FILE, NULL}, [2]) = 14 fcntl64(12, F_SETFL, O_RDWR) = 0 getsockname(14, {sa_family=AF_FILE, path="/var/run/mysqld/mysqld.sock"}, [30]) = 0 fcntl64(14, F_SETFL, O_RDONLY) = 0 fcntl64(14, F_GETFL) = 0x2 (flags O_RDWR) setsockopt(14, SOL_SOCKET, SO_RCVTIMEO, "\36\0\0\0\0\0\0\0", 8) = 0 setsockopt(14, SOL_SOCKET, SO_SNDTIMEO, "<\0\0\0\0\0\0\0", 8) = 0 fcntl64(14, F_SETFL, O_RDWR|O_NONBLOCK) = 0 setsockopt(14, SOL_IP, IP_TOS, [8], 4) = -1 EOPNOTSUPP (Operation not supported) futex(0xb786a584, FUTEX_WAKE_OP_PRIVATE, 1, 1, 0xb786a580, {FUTEX_OP_SET, 0, FUTEX_OP_CMP_GT, 1}) = 1 futex(0xb7869998, FUTEX_WAKE_PRIVATE, 1) = 1 poll([{fd=10, events=POLLIN}, {fd=12, events=POLLIN}], 2, -1) = 1 ([{fd=12, revents=POLLIN}]) er... now I totally don't get it x_x help

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  • Physics-based dynamic audio generation in games

    - by alexc
    I wonder if it is possible to generate audio dynamically without any (!) audio assets, using pure mathematics/physics and some input values like material properties and spatial distribution of content in scene space. What I have in mind is something like a scene, with concrete floor, wooden table and glass on it. Now let's assume force pushes the glass towards the edge of table and then the glass falls onto the floor and shatters. The near-realistic glass destruction itself would be possible using voxels and good physics engine, but what about the sound the glass makes while shattering? I believe there is a way to generate that sound, because physics of sound is fairly known these days, but how computationaly costy that would be? Consumer hardware or supercomputers? Do any of you know some good resources/videos of such an experiment?

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  • Dynamic body implementation

    - by ArturoVM
    I am writing a 2D game where one of the characters has some very particular requirements. This character is a body with no particular shape (similar to a fluid, but not so much), it has to be able to grow and shrink (as in actually growing, not just scaling), and it has to have collision detection (even if it's basic). Because of this requirements, it obviously can't be based on a sprite, so direct rendering of the shape should be the logical thing to do. I assume this is no easy task, but I just couldn't find a good physics engine that covers these requirements (or at least no tutorial on how to do it; I particularly searched for Box2D tutorials). Is there a way of doing this with Box2D, SDL, or any other physics or game engine out there? If not, what's a good place to start? I am really clueless as far as soft-body physics are concerned.

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  • Windows 7 inbuilt and 3rd party (de)fragmentation related queries

    - by Karan
    I have a pretty good idea of how files end up getting fragmented. That said, I just copied ~3,200 files of varying sizes (from a few KB to ~20GB) from an external USB HDD to an internal, freshly formatted (under Windows 7 x64), NTFS, 2TB, 5400RPM, WD, SATA, non-system (i.e. secondary) drive, filling it up 57%. Since it should have been very much possible for each file to have been stored in one contiguous block, I expected the drive to be fragmented not more than 1-2% at most after this rather lengthy exercise (unfortunately this older machine doesn't support USB 3.0). Windows 7's inbuilt defrag utility told me after a quick analysis that the drive was fragmented only 1% or so, which dovetailed neatly with my expectations. However, just out of curiosity I downloaded and ran the latest portable x64 version of Piriform's Defraggler, and was shocked to see the drive being reported as being ~85% fragmented! The portable version of Auslogics Disk Defrag also agreed with Defraggler, and both clearly expected to grind away for ~10 hours to completely defragment the drive. 1) How in blazes could the inbuilt and 3rd party defrag utils disagree so badly? I mean, 10-20% variance is probably understandable, but 1% and 85% are miles apart! This Engineering Windows 7 blog post states: In Windows XP, any file that is split into more than one piece is considered fragmented. Not so in Windows Vista if the fragments are large enough – the defragmentation algorithm was changed (from Windows XP) to ignore pieces of a file that are larger than 64MB. As a result, defrag in XP and defrag in Vista will report different amounts of fragmentation on a volume. ... [Please read the entire post so the quote is not taken out of context.] Could it simply be that the 3rd party defrag utils ignore this post-XP change and continue to use analysis algos similar to those XP used? 2) Assuming that the 3rd party utils aren't lying about the real extent of fragmentation (which Windows is downplaying post-XP), how could the files have even got fragmented so badly given they were just copied over afresh to an empty drive? 3) If vastly differing analysis algos explain the yawning gap, which do I believe? I'm no defrag fanatic for sure, but 85% is enough to make me seriously consider spending 10 hours defragging this drive. On the other hand, 1% reported by Windows' own defragger clearly implies that there is no cause for concern and defragging would actually have negative consequences (as per the post). Is Windows' assumption valid and should I just let it be, or will there be any noticeable performance gains after running one of the 3rd party utils for 10 hours straight? 4) I see that out of the box Windows 7 defrag is scheduled to run weekly. Does anyone know whether it defrags every single time, or only if its analysis reveals a fragmentation percentage over a set threshold? If the latter, what is this threshold and can it be changed, maybe via a Registry edit? Thanks for reading through (my first query on this wonderful site!) and for any helpful replies. Also, if you're answering question #3, please keep in mind that any speed increases post defragging with 3rd party utils vis-à-vis Windows' inbuilt program should not include pre-Vista (preferably pre-Win7) examples. Further, examples of programs that made your system boot faster won't help in this case, since this is a non-system drive (although one that'll still be used daily).

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