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  • this.BoundingBox.Intersects(Wall[0].BoundingBox) not working properly

    - by Pieter
    I seem to be having this problem a lot, I'm still learning XNA / C# and well, trying to make a classic paddle and ball game. The problem I run into (and after debugging have no answer) is that everytime I run my game and press either of the movement keys, the Paddle won't move. Debugging shows that it never gets to the movement part, but I can't understand why not? Here's my code: // This is the If statement for checking Left movement. if (keyboardState.IsKeyDown(Keys.Left) || keyboardState.IsKeyDown(Keys.A)) { if (!CheckCollision(walls[0])) { Location.X -= Velocity; } } //This is the CheckCollision(Wall wall) boolean public bool CheckCollision(Wall wall) { if (this.BoundingBox.Intersects(wall.BoundingBox)) { return true; } return false; } As far as I can tell there should be absolutely no problem with this, I initialize the bounding box in the constructor whenever a new instance of Walls and Paddle is created. this.BoundingBox = new Rectangle(0, 0, Sprite.Width, Sprite.Height); Any idea as to why this isn't working? I have previously succeeded with using the whole Location.X < Wall.Location.X + Wall.Texture.Width code... But to me that seems like too much coding if a simple boolean check could be done.

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  • Strategy for hosting 700+ domains, each with static HTML site

    - by jonschlinkert
    I have a portfolio of more than 700 domain names, and ideally I'd like to put up a single-page HTML/CSS/JavaScript webpage for each domain. Is there a system/strategy/workflow that will allow me to: Automate the deployment of new websites, quickly and easily without having to manually initiate each new website in an admin panel. For instance, I've seen dropbox-based solutions that claim to make it simple to setup new websites on your dropbox account, but you still have to set each one up in an admin interface first. It would be so much easier to have a folder naming convention that allowed the user to easily clone/copy/duplicate sites inside their Dropbox App folder (https://www.dropbox.com/developers/blog/23) to create new ones. Sounds interesting, however... It's easy to managing CNAMEs on the registrar-side, is there a way to quickly associate CNAMEs with new websites, maybe gh-pages-style (https://help.github.com/articles/setting-up-a-custom-domain-with-pages)? With GitHub's gh-pages, all you have to do is drop a file called CNAME into your repo, with the domain name you want associated with the repo inside the file. gh-pages isn't a good solution for what I'm doing though unfortunately. I'm also a front-end developer, specializing in rapid web development and "front-end build systems", so I building and maintaining static assets for hundreds of sites is no problem. It's the hosting-side that I really struggle with. Any suggestions?

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  • SQL language drawbacks, The Third Manifesto

    - by David Portabella
    Sometime ago I read about SQL language drawbacks (the basic language specification, not vendor specific), and one of the drawbacks was that the language does not allow to create a set of tuples that don't come from a table. For instance, SELECT firstName, lastName from people; this creates a set of tuples coming from the table people. Now, if I don't have this table people, and I want to return a constant, I'd need something like this to return a set of two tuples (this would not require to have a table): SELECT VALUES('james', 'dean'), ('tom', 'cruisse'); Why I would need that? Because of the same reasons that we can define constants (not only basic types, but objects and arrays also) in any advanced programming language. Workarounds, Yes, I could create a temporal table, fill the data, and SELECT from that table. This is a hack, to overcome the drawbacks of the poor SQL language. I think that I read about this somewhere in "The Third Manifesto", but I don't find the paragraph/example talking about this concrete drawback anymore. Do you know a reference about it?

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  • Social Media Aggregator, Global Update via Powershell

    - by deanjmiller
    Does anyone know of a way to interface with a Social Media Aggregator using Powershell. For Instance, I would like to update my global status on digsby using Powershell. Digsby would then fan the message out to Facebook, Myspace, Twitter, Etc.. I am open to using any Social Media Aggregator that can do this.. Digsby, Seesmic, Ping.fm TweetDeek, etc.. If any of these programs have a com interface or something like it I'm sure who ever implements this first will have a large gain in users.

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  • Do I need to have a company so that I can buy an SSL certificate that will display green at the address bar?

    - by André Pena
    I have a non-comercial website in which the users store some sensitive information so I feel the need to have a SSL certificate, but it seems that if I don't have a registered company I can't buy a green certificate. I have some related questions: Is it true that if I don't have a company, I can't have a green certificate? If I issue a standard (non-business) certificate that won't go green (from GoDadday, for instance), will it go red? Or will it have a less ugly display.. something more neutral that won't scary the user.

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  • How do I access my public DNS on Amazon's EC2

    - by Spencer Carnage
    I'm working with Amazon's EC2 for the first time. I went through all of the steps at http://docs.amazonwebservices.com/AWSEC2/latest/GettingStartedGuide/ and now I'm trying to access the public DNS through a web browser. I get nothing. I don't even know if I'm supposed to get anything, really. I just want to see something that indicates that my instance is accessible from the web for development's sake. I'm completely new at this and I can't find a simple answer to this anywhere to save my life. Any help would be MUCH appreciated. Thanks!

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  • How to pipe differently the body of the curl answer and the printed output?

    - by Antoine Lizée
    I would like to print in the command line some output of curl, like the http headers, followed by the body of the answer processed by a stdin/stdout program. For instance: Print the status code: curl -s -w "%{http_code} \\n" -o "/dev/null" http://myURL.com And then process the output with a json parsing tool: curl -s http://myURL.com | python -mjson.tool I would like to do both with one command, and I have the feeling that it may be possible thanks to the -o option that makes the difference between the output of curl and the actual answer from the query. The problem is that -o writes directly to a file. Somebody's got a hack?

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  • From a quality perspective, what is better: Turning volume up in the software, in the OS, or on the speakers?

    - by Qqwy
    I kept thinking about this, and out of sheer curiosity, I decided to ask: If music isn't loud enough. How do I get the best quality?(Even if the difference is in fact so small it's neglectible) By making the music louder in my music player, game or other sound-producing software program. By raising the volume at the Operating System level (for instance, by clicking the 'speaker' icon on the windows bar and turning the volume up) By turning the volume up on the Amplifier or Speakers that are attached to your computer, and thus changing the volume on the 'hardware' Does programs vs OS matter? Does software vs. hardware matter? Thanks, Qqwy

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  • How do I lower idle cpu usage in ubuntu linux? Gnome or KDE Variants

    - by Jasen
    My question comes from a kde desktop currently, but it also happens with the gnome instance. When just sitting there, with only the cpu monitor widget running. no open windows, no background processes other than the desktop, my cpu is at ~20%. I wanna know how to fix this, and possibly get better performance out of it. When running my windows side, the cpu will sit at zero, and i generally load new programs about 400ms faster. With windows 7 being as slow as it is, this is not acceptable. and the widget is only set to check every 500ms, so im almost completely sure its not the widget. My system is a Gateway nv 53 amd 2.0 ghz turion with 4 gb of installed ram, and 500 gb hd. both linux and windows are 64 bit. average ram use on either system is about 1.4 gb for just the os

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  • How do I create DNS entries for EC2 instances created by Auto Scaling?

    - by Evan
    I'm looking into using auto scaling groups for a tier of webservers that would be fronted by an ELB. One of the things I'm having a hard time with is how to give each new instance the proper DNS name. For example, I'd like webservers to have names like frontend-web-XXX.prod.example.com so their names would appear correct in logs and just ease of organization. I have two other tiers I'd ultimately like to make autoscaled and I'd like them to have names like api-web-XXX.prod.example.com as well. I have some experience with cloudformation templates and have spun up individual instances with associated Route53 records but I don't see any indication of how this can be done within an autoscaled group.

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  • How to keep track of previous scenes and return to them in libgdx

    - by MxyL
    I have three scenes: SceneTitle, SceneMenu, SceneLoad. (The difference between the title scene and the menu scene is that the title scene is what you see when you first turn on the game, and the menu scene is what you can access during the game. During the game, meaning, after you've hit "play!" in the title scene.) I provide the ability to save progress and consequently load a particular game. An issue that I've run into is being able to easily keep track of the previous scene. For example, if you enter the load scene and then decide to change your mind, the game needs to go back to where you were before; this isn't something that can be hardcoded. Now, an easy solution off the top of my head is to simply maintain a scene stack, which basically keeps track of history for me. A simple transaction would be as follows I'm currently in the menu scene, so the top of the stack is SceneMenu I go to the load scene, so the game pushes SceneLoad onto the stack. When I return from the load scene, the game pops SceneLoad off the stack and initializes the scene that's currently at the top, which is SceneMenu I'm coding in Java, so I can't simply pass around Classes as if they were objects, so I've decided implemented as enum for eac scene and put that on the stack and then have my scene managing class go through a list of if conditions to return the appropriate instance of the class. How can I implement my scene stack without having to do too much work maintaining it?

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  • Bound external Cisco CIGESM ports to a specific BladeServer

    - by Vinícius Ferrão
    We have an IBM BladeCenter with 14 blade servers and one external Cisco CIGESM for Ethernet connectivity. Since this hardware is a little old, we will use it for other services, and we want to run a pfSense instance on one of the blades. It's just an Firewall Appliance, but it needs two network interfaces: one for the WAN and the other one for LAN access. Our architecture works on top of static routes, we don't use NAT, so we got the WAN IP in one interface routing to the another one. The main problem is how to plug the WAN cable in one of the four external ports and make it exclusive to the blade server containing the firewall. And we also need an exit port that goes through a 3COM 4200G switch that makes the internal routing and VLAN separation. Thanks in advance

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  • How to Structure a Trinary state in DB and Application

    - by ABMagil
    How should I structure, in the DB especially, but also in the application, a trinary state? For instance, I have user feedback records which need to be reviewed before they are presented to the general public. This means a feedback reviewer must see the unreviewed feedback, then approve or reject them. I can think of a couple ways to represent this: Two boolean flags: Seen/Unseen and Approved/Rejected. This is the simplest and probably the smallest database solution (presumably boolean fields are simple bits). The downside is that there are really only three states I care about (unseen/approved/rejected) and this creates four states, including one I don't care about (a record which is seen but not approved or rejected is essentially unseen). String column in the DB with constants/enum in application. Using Rating::APPROVED_STATE within the application and letting it equal whatever it wants in the DB. This is a larger column in the db and I'm concerned about doing string comparisons whenever I need these records. Perhaps mitigatable with an index? Single boolean column, but allow nulls. A true is approved, a false is rejected. A null is unseen. Not sure the pros/cons of this solution. What are the rules I should use to guide my choice? I'm already thinking in terms of DB size and the cost of finding records based on state, as well as the readability of code the ends up using this structure.

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  • Obtain reference to Parent object during instantiation

    - by GoldBishop
    I have a situation where a custom class is a property of another class. What i need to be able to do, if it is possible at all, is obtain a reverse to the "parent" class (ie the the class that holds the current class as a property). For Instance: Public Class Class1 ... public readonly property Prop11 as Class2 public property Prop12 as String ... End Class Public Class Class2 ... private _par as Class1 private _var21 as string ... Public Sub New(...) me._par = ???? ... End Sub public readonly property Prop21 as string Get return me._par.Prop12 & me._var21 End Get End Property ... End Class Ultimately, i am trying to access other properties within Class1 from Class2 as they do have substance for information from within Class2. There are several other classes within Class1 that provide descriptive information to other classes contained within it as properties but the information is not extensible to all of the classes through Inheritance, as Class1 is being used as a resource bin for the property classes and the application itself. Diagram, lazy design ;): Application <- Class1.Prop12 Application <- Class1.Prop11.Prop21 Question: Is it possible to get a recursion through this design setup?

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  • http server connectivity puzzle

    - by jpmartins
    I have been seeing some strange connection issue in the production environment. The setup has two IBM Http Server's (IHS) and a network IP load-balancer in front of them (round-robin). One instance the system is working fine, the next requests stop arriving at the IHS. Telnet directly to port 80 of the IHS is established sucessfully, but connection to the port 80 through the IP of the load-balancer fails! The puzzle comes next, the network admins say the load-balancer is working fine. When we finally reboot the IHS servers and request start flowing... The situation happened three times the last month and no obvious pattern was found. Any debug ideas?

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  • Ubuntu nasty error: The panel encountered a problem while loading xxxApplet

    - by Phuong Nguyen
    I have install ubuntu & GNOME (say, with minimum possible number of packages). I can login and do anything as I want. However, there is a nasty thing: Whenever I loggin in, I see this message: Error The panel encountered a problem while loading "OAFIID:GNOME_FastUserSwitchApplet" Do you want to delete the applet from your configuration [Don't Delete] [Delete] If I press [Delete] then the error won't be shown anymore. However, for every new created account, the message shown again (use created using sudo adduser user_name). Since I clone this OS into several virtual instance, and create new account on these instances. I wonder if there is a way to configure my ubuntu so that new created user don't have to see this annoy message? Thanks

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  • Should I, and how do I incorporate microdata into my asp.net website with 47 pages?

    - by Jason Weber
    I have an asp.net (vb) with 47 pages. The problem is that it's in 10 different languages, although 98% just use English. I have 5 master pages. I've read Google Webmaster Tools, but I'm still confounded. I'm reading about how microdata is the way to go. Does this mean I should put itemtype and itemprop span and div tags in my master pages, or should I do all of my 47 pages (.resx resource files) separately? The main key phrase I want throughout search results is "machine vision". For instance, the first couple sentences on my "about.aspx" page are: <span itemprop="name">USS Vision Inc.</span> (USS) is a privately-owned company with headquarters in <span itemprop="locality">Detroit, Michigan, USA</span>. We design, engineer, produce, and integrate special machine vision error-proofing products and <a href="http://www.ussvision.com/services/" target="_self" itemprop="url">services</a> that create lean factories by improving the quality of manufactured products, and by significantly reducing manufacturing costs through advanced automation. Am I doing this right, or how would I do this if I'm not? Should I use the itemprop="url" or other rich snippets for every link in my website? I mean, do I need to add an itemprop to just about everything, or can I just alter my master pages? Any guidance in this regard to help improve my SEO and SERPS would be greatly appreciated!

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  • MySQL wants a password but it's empty

    - by gAMBOOKa
    mysql -uroot ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES) mysql -uroot -p Enter password: <-- leave blank, hit enter without entering anything mysql> <-- i am logged in NOTE: This is a new mysql instance installation So if the password is blank, why won't it log me in without a -p flag? For a little clarification. I am running into this issue when attempting to change the password using a script: We're using a bash script to do that. mysqladmin -u root password abc wouldn't work (access denied) mysqladmin -u root -p password abc cannot be used because it prompts for a password and we need to automate this. mysqladmin -u root -p'' password abc is not working either

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  • SQL Server Migration Assistant for Oracle problem

    - by Paul
    I've recently installed SSMA on my computer and after connecting to both the Oracle instance (which holds the database to be converted) and the SQL Server. I've mapped the needed schemas from oracle to mssql. The problem is that when i click on the report button for the assessment report there's an error popping up: Assesment Error : Nothing to Process The output window states: Starting conversion... Analyzing metadata... Conversion finished with 0 errors, 0 warnings, and 0 informational messages. There is nothing to process. Has anyone got experience with SSMA. I can't figure out what I am doing wrong. Thank you.

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  • Emacs eshell over SSH not obeying key commands or elisp

    - by Brad Wright
    When SSHing to a remote server Eshell doesn't behave very well, e.g: M-x eshell ssh server <tab> *inserts literal tab instead of trying to complete* Hitting <tab>, for instance, inserts a literal tab. Is there no way to get tab completion, lisp interaction (like find-file blah) etc. over SSH? All the documentation I've read says Eshell is "TRAMP-aware", which I assume meant it could deal with this. Am I just wrong in my assumption that it would work over SSH, or is something broken? This is on Emacs 24.0.94 pretest.

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  • Tracking costs within one AWS account

    - by caius howcroft
    I have what I'm sure is a very common problem. Our company has many projects and groups working for different clients. We do a lot of our development work in the cloud and deploy our solutions there. We have a VPC set up that isolates projects from each other in their own subnet and that VPC is getting a hardware VPN connection back to HQ. We need to keep track of the cost run up by every project. The way I currently implement this is by providing my own tools for starting and stopping instances which log which user (and thus which project) to bill the instance too. This works okay for BoxUsage costs but not for other costs. I could create a separate account for each project and use consolidated billing, this I think would allow me to pay once but track costs per "project", but I would then not be able to share common resources (like bring account B's running instances inside the same VPC). Does anyone have any suggestions? Cheers C

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  • ec2 ami device mapping

    - by hortitude
    I have large ec2 Ubuntu image and I'm just looking through the devices. I noticed from the metadata that % curl http://169.254.169.254/latest/meta-data/block-device-mapping/ami sda1 % curl http://169.254.169.254/latest/meta-data/block-device-mapping/ephemeral0 sdb However when I look what is actually mounted there is /dev/xvda1 and /dev/xvdb (and there is no /dev/sd* ) I know that both names look somewhat valid from the AWS documentation, but it looks to me from this like there is a mismatch in the instance metadata and what is actually on the machine. Why don't they match?

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  • Setting up scripts in Amazon EC2 Cloud

    - by racket99
    Hello, I am currently running a few perl and python scripts on a windows pc and would like to port over to the Amazon EC2 servers running 64-bit LINUX. The scripts are basic web scrapers that go to a variety of websites, get data and then save daily as csv files. I would like to install these in the cloud and get them running in an automated way so that they will run without my intervention. Also given that I don't want to lose all the data if the instance crashes, I should also upload the csv files to Amazon S3. Any idea how I can do this? I am not terribly versed in LINUX nor do I know Perl/Python well. What is the best way for me to tackle thi

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  • zlib/libxml2 duplicate package?

    - by Fusion
    I've been updating my amazon ec2 micro instance every month till now. when i try to "yum update" i receive this error : zlib-1.2.5-7.11.amzn1.x86_64 has installed conflicts libxml2 < ('0', '2.7.7', None): libxml2-2.7.6-4.12.amzn1.x86_64 zlib-1.2.5-7.11.amzn1.x86_64 is a duplicate with zlib-1.2.3-27.9.amzn1.x86_64 yum update output: http://pastebin.com/Dfq0yphN I've tried to update separately zlib and libxml2 zlib: same "duplicate" error. libxml2: Transaction Check Error: package libxml2-2.7.8-10.24.amzn1.x86_64 is already installed what can i do?

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  • Unknown/unsupported storage engine: InnoDB | Mysql Ubuntu

    - by Kayle
    I recently upgraded from the previous LTS Ubuntu to Precise and now mysql refuses to start. It complains of the following when I attempt to start it: ?$ sudo service mysql restart stop: Unknown instance: start: Job failed to start And this shows in "/var/log/mysql/error.log": 120415 23:01:09 [Note] Plugin 'InnoDB' is disabled. 120415 23:01:09 [Note] Plugin 'FEDERATED' is disabled. 120415 23:01:09 [ERROR] Unknown/unsupported storage engine: InnoDB 120415 23:01:09 [ERROR] Aborting 120415 23:01:09 [Note] /usr/sbin/mysqld: Shutdown complete I've checked permissions on all the mysql directories to make sure it had ownership and I also renamed the previou ib_logs so that it could remake them. I'm just getting no where with this issue right now, after looking at google results for 2 hours.

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