entry point - Page 557 - Developer IT

Game Resource Generation

- by Darthg8r

I am currently building a game that has a "City" entity. These cities generate and consume resources such as food variably over a period of time. I need to be able query the server often to find exactly how much food the city at any given point. These queries can take place multiple times per minute. There could also be 400,000 cities to track at a given time. How would you handle tracking these resources? Would you do it in real time, keeping an instance of the city in memory on the server, with some sort of a snapshot in time of the resources, then computing the growth/consumption from that snapshot time for subsequent queries? Would you work exclusively with a database, using a similar "snapshoting" scheme? Maybe a mixture of the 2, caching recently queried cities in memory for a period of time? There is also a lot of other data that each city needs to track. A player can queue units to build in a barrack. The armies available in the city will need to be updated as units complete. I'm interested in everyone's input on where/when/how you'd manage the real time data.

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are there ever deals on macbooks

- by John

I am fed up with hot running dell laptops. I think I am at the point where I want a fast and mobile machine that does not get hot and has decent battery power. I was provided IBM thinkpad from work ...on which I put ubuntu and i was satisfied with it for a year. Now I am quitting my current work and time has come for met to reveal to them that I put ubuntu on it. All in all I will be without a laptop in a week and am thinking about getting a mac book pro. I have never bought an apple product before, so curious...are there ever any deals on macbooks? Or whatever the price is ...that is it.

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C# vector class - Interpolation design decision

- by Benjamin

Currently I'm working on a vector class in C# and now I'm coming to the point, where I've to figure out, how i want to implement the functions for interpolation between two vectors. At first I came up with implementing the functions directly into the vector class... public class Vector3D { public static Vector3D LinearInterpolate(Vector3D vector1, Vector3D vector2, double factor) { ... } public Vector3D LinearInterpolate(Vector3D other, double factor { ... } } (I always offer both: a static method with two vectors as parameters and one non-static, with only one vector as parameter) ...but then I got the idea to use extension methods (defined in a seperate class called "Interpolation" for example), since interpolation isn't really a thing only available for vectors. So this could be another solution: public class Vector3D { ... } public static class Interpolation { public static Vector3D LinearInterpolate(this Vector3D vector, Vector3D other, double factor) { ... } } So here an example how you'd use the different possibilities: { var vec1 = new Vector3D(5, 3, 1); var vec2 = new Vector3D(4, 2, 0); Vector3D vec3; vec3 = vec1.LinearInterpolate(vec2, 0.5); //1 vec3 = Vector3D.LinearInterpolate(vec1, vec2, 0.5); //2 //or with extension-methods vec3 = vec1.LinearInterpolate(vec2, 0.5); //3 (same as 1) vec3 = Interpolation.LinearInterpolation(vec1, vec2, 0.5); //4 } So I really don't know which design is better. Also I don't know if there's an ultimate rule for things like this or if it's just about what someone personally prefers. But I really would like to hear your opinions, what's better (and if possible why ).

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Plesk on Windows Server 2008 memory usage

- by Thomas

I have a server running IIS and Plesk. There is a problem every day now in which the memory usage of PleskControlPanel.exe and w3wp.exe slowly increases. And at some point all of the sites hosted on the server go down. Restarting Plesk through its panel will reset its memory usage for a while, and restarting IIS will make it last even longer, but there is still the constant memory climbing problem. I cannot see anything by looking through the event viewer. Has anyone ever seen anything like this with Plesk on Windows? Thanks for any help.

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Subdomain still times out after being set up a month ago

- by user8137

I would like to use the subdomain www.high-res.domain.com to be accessed by external customers with specific permissions to access the site (like FTP). We use Network Solutions to house domain.com. We recently added a new IP address to point to www.high-res.domain.com. I gave the IP address to the company that hosts our website. I pinged www.high-res.domain.com and it points to the correct IP address but still times out. It’s been a few weeks now and when you ping it, it still times out. C:\>ping XXX.XXX.X.XXX Pinging XXX.XXX.X.XXX with 32 bytes of data: Request timed out. Request timed out. Request timed out. Request timed out. Ping statistics for XXX.XXX.X.XXX: Packets: Sent = 4, Received = 0, Lost = 4 (100% loss). tracert times out as well. I even went to DNS tools and a few other sites for checking this and it shows the same thing. I recently went into the DNSmgmt on our server (wink2k3sp1) and created an A record under the DomainDnsZones which translated to a CNAME when you look at it. Under the domain it has two entries, one to the subdomain and the other to the website host. Each has separate IP addresses. Is this correct?

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What's a nice explanation for pointers?

- by Macneil

In your own studies (on your own, or for a class) did you have an "ah ha" moment when you finally, really understood pointers? Do you have an explanation you use for beginner programmers that seems particularly effective? For example, when beginners first encounter pointers in C, they might just add &s and *s until it compiles (as I myself once did). Maybe it was a picture, or a really well motivated example, that made pointers "click" for you or your student. What was it, and what did you try before that didn't seem to work? Were any topics prerequisites (e.g. structs, or arrays)? In other words, what was necessary to understand the meaning of &s and *, when you could use them with confidence? Learning the syntax and terminology or the use cases isn't enough, at some point the idea needs to be internalized. Update: I really like the answers so far; please keep them coming. There are a lot of great perspectives here, but I think many are good explanations/slogans for ourselves after we've internalized the concept. I'm looking for the detailed contexts and circumstances when it dawned on you. For example: I only somewhat understood pointers syntactically in C. I heard two of my friends explaining pointers to another friend, who asked why a struct was passed with a pointer. The first friend talked about how it needed to be referenced and modified, but it was just a short comment from the other friend where it hit me: "It's also more efficient." Passing 4 bytes instead of 16 bytes was the final conceptual shift I needed.

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Mountain Lion fails to connect to Windows share after the connection is interrupted

- by T Reddy

I have a Windows 7 share that my Mountain Lion Macbook Pro connects to. The windows share is simply a user account. For whatever reason, when my connection gets interrupted, the mac will show a dialog stating as such and will ask me to ignore or disconnect. From this point forward, I cannot re-establish the connection from the mac to the windows share (even if I reboot the mac). I always have to reboot the windows machine in order for my mac to see the share again. My Windows share is my media center, so I'm not always able to reboot the machine because it is recording TV. Has anybody else encountered this problem and if so how is it resolved?

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Antenna Aligner Part 7: Connecting the dots

- by Chris George

The app is basically ready, so I eagerly started to sort out creating the application entry in iTunes Connect. It's mostly intuitive actually, although I did have to create yet another icon for iTunes sized 512x512 pixels, damn lucky I did the original graphics as vector! It took me longer to write the application description than anything else, I'm so not a tech author! I didn't like the way you have to 'make up' an SKU (Stock Keeping Unit) number. I have to do some googling to find out that it really doesn't matter what it is! It should be more obvious what to do from the actual website itself. That aside, the rest of it was actually fairly straightforward. As well as the details of the application, iPhone and iPad screenshots were also required. This posed somewhat of a problem. The iPhone ones were easy (as I have one!), but I do not (yet) own an iPad . So I thought I'd leave the iPad screenshots out for now. Once the application details were sorted, I moved onto the rights and pricing. At the start of the project I had made the decision that I wouldn't charge any more than the lowest amount £0.59. I believe there is a market for this, but as my first foray into app development I didn't want to take the mick. I did realise, however, that I had built my app with a developer certificate and provisioning profile. This was fairly quickly corrected, and again Nomad made this very easy to switch over to the distribution certificate and provisioning profile. With a sense of excitement I cracked open iTunes connect and clicked the upload button ... ...slight snag... . when the Nomad project was started, Apple allowed uploads of these binaries via iTunes Connect. But this is no longer possible, the only upload path is via the Application Loader available from the Apple Developer program. This itself has one limitation, it only runs on a mac! D'OH!!! Actually my language was somewhat more colourful when this fact came to light. After picking my laptop up off the floor and putting it back together... ok only joking, but I did nearly throw it out of frustration!... I started to consider the options; I briefly entertained the idea of buying a cheap mac from ebay... no, that defeats the whole object of what I'm doing, plus my wife wouldn't be impressed there are some guys out there in the interweb who will upload your app for a small fee...but I don't really like the idea of giving some faceless email address my apple developer login details, as well as my app binary! find some willing friend with a mac who would kindly let me use it... obviously this is the only sensible option. In the meantime, I informed the Nomad team about this slight 'issue' and they are currently investigating possible solutions...

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Expanding on requestaudit - Tracing who is doing what...and for how long

- by Kyle Hatlestad

One of the most helpful tracing sections in WebCenter Content (and one that is on by default) is the requestaudit tracing. This tracing section summarizes the top service requests happening in the server along with how they are performing. By default, it has 2 different rotations. One happens every 2 minutes (listing up to 5 services) and another happens every 60 minutes (listing up to 20 services). These traces provide the total time for all the requests against that service along with the number of requests and its average request time. This information can provide a good start in possibly troubleshooting performance issues or tracking a particular issue. >requestaudit/6 12.10 16:48:00.493 Audit Request Monitor !csMonitorTotalRequests,47,1,0.39009329676628113,0.21034042537212372,1>requestaudit/6 12.10 16:48:00.509 Audit Request Monitor Request Audit Report over the last 120 Seconds for server wcc-base_4444****requestaudit/6 12.10 16:48:00.509 Audit Request Monitor -Num Requests 47 Errors 1 Reqs/sec. 0.39009329676628113 Avg. Latency (secs) 0.21034042537212372 Max Thread Count 1requestaudit/6 12.10 16:48:00.509 Audit Request Monitor 1 Service FLD_BROWSE Total Elapsed Time (secs) 3.5320000648498535 Num requests 10 Num errors 0 Avg. Latency (secs) 0.3531999886035919 requestaudit/6 12.10 16:48:00.509 Audit Request Monitor 2 Service GET_SEARCH_RESULTS Total Elapsed Time (secs) 2.694999933242798 Num requests 6 Num errors 0 Avg. Latency (secs) 0.4491666555404663requestaudit/6 12.10 16:48:00.509 Audit Request Monitor 3 Service GET_DOC_PAGE Total Elapsed Time (secs) 1.8839999437332153 Num requests 5 Num errors 1 Avg. Latency (secs) 0.376800000667572requestaudit/6 12.10 16:48:00.509 Audit Request Monitor 4 Service DOC_INFO Total Elapsed Time (secs) 0.4620000123977661 Num requests 3 Num errors 0 Avg. Latency (secs) 0.15399999916553497requestaudit/6 12.10 16:48:00.509 Audit Request Monitor 5 Service GET_PERSONALIZED_JAVASCRIPT Total Elapsed Time (secs) 0.4099999964237213 Num requests 8 Num errors 0 Avg. Latency (secs) 0.051249999552965164requestaudit/6 12.10 16:48:00.509 Audit Request Monitor ****End Audit Report***** To change the default rotation or size of output, these can be set as configuration variables for the server: RequestAuditIntervalSeconds1 – Used for the shorter of the two summary intervals (default is 120 seconds)RequestAuditIntervalSeconds2 – Used for the longer of the two summary intervals (default is 3600 seconds)RequestAuditListDepth1 – Number of services listed for the first request audit summary interval (default is 5)RequestAuditListDepth2 – Number of services listed for the second request audit summary interval (default is 20) If you want to get more granular, you can enable 'Full Verbose Tracing' from the System Audit Information page and now you will get an audit entry for each and every service request. >requestaudit/6 12.10 16:58:35.431 IdcServer-68 GET_USER_INFO [dUser=bob][StatusMessage=You are logged in as 'bob'.] 0.08765099942684174(secs) What's nice is it reports who executed the service and how long that particular request took. In some cases, depending on the service, additional information will be added to the tracing relevant to that service. >requestaudit/6 12.10 17:00:44.727 IdcServer-81 GET_SEARCH_RESULTS [dUser=bob][QueryText=%28+dDocType+%3cmatches%3e+%60Document%60+%29][StatusCode=0][StatusMessage=Success] 0.4696030020713806(secs) You can even go into more detail and insert any additional data into the tracing. You simply need to add this configuration variable with a comma separated list of variables from local data to insert. RequestAuditAdditionalVerboseFieldsList=TotalRows,path In this case, for any search results, the number of items the user found is traced: >requestaudit/6 12.10 17:15:28.665 IdcServer-36 GET_SEARCH_RESULTS [TotalRows=224][dUser=bob][QueryText=%28+dDocType+%3cmatches%3e+%60Application%60+%29][Sta... I also recently ran into the case where services were being called from a client through RIDC. All of the services were being executed as the same user, but they wanted to correlate the requests coming from the client to the ones being executed on the server. So what we did was add a new field to the request audit list: RequestAuditAdditionalVerboseFieldsList=ClientToken And then in the RIDC client, ClientToken was added to the binder along with a unique value that could be traced for that request. Now they had a way of tracing on both ends and identifying exactly which client request resulted in which request on the server.

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SQL Script to Assign All Items to ALL Sites with Dynamics GP

- by Ryan McBee

v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} Normal 0 false false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} When setting up new items within Microsoft Dynamics GP, you will often run into the error message below which reads “This site is not assigned to the selected item. Do you want to assign this site?” The fix is quite simple given that you simply click the Add button below which opens up the Item Quantities Maintenance window which you will hit the save button and proceed with the entry of your Sales Order or Purchase Order. If you have a lot of new items into GP and have just one Site ID setup, the best approach to assigning your items to a particular site is by going to the Site Maintenance Window which is located in Cards>>Inventory>>Site. Once you are in the window below, you can click the Assign button to assign Items to the Site selected. However, if you have you a lot of Sites and Items created, this can be quite a cumbersome and time consuming process. For that, I have created the following SQL Script below that Assigns all Items to all Site ID’s within Microsoft Dynamics GP 2010. declare @item varchar(100) , @loc varchar(100) , @ItemExist int DECLARE TablePositionCursor CURSOR FOR SELECT itemnmbr from IV00101 i OPEN TablePositionCursor FETCH NEXT FROM TablePositionCursor INTO @item WHILE (@@fetch_status <> -1) BEGIN DECLARE TablePositionCursor2 CURSOR FOR select locncode from IV40700 OPEN TablePositionCursor2 FETCH NEXT FROM TablePositionCursor2 INTO @loc WHILE (@@fetch_status <> -1) BEGIN SELECT @ItemExist = isnull(count(*), 0) FROM IV00102 where ITEMNMBR = @item and LOCNCODE = @loc if @ItemExist = 0 BEGIN insert into iv00102 values( @item ,@loc ,'' ,2 ,'' ,0 ,0 ,0 ,0 ,'01/01/1900' ,'' ,'01/01/1900' ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,'01/01/1900' ,'01/01/1900' ,'01/01/1900' ,'01/01/1900' ,0 ,'' ,'' ,'' ,1 ,0 ,0 ,1 ,0 ,0 ,1 ,2 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,1 ,0 ,0 ,0 ,3 ,0 ,0 ,0 ,'' ,'' ,'' ,'' ,'' ,'' ,'' ,'' ,1 ,1 ,'' ,1 ,1 ,0 ,1 ,1 ,1 ,0 ,0 ,0 ,0 ,0 ) END FETCH NEXT FROM TablePositionCursor2 INTO @loc END DEALLOCATE TablePositionCursor2 FETCH NEXT FROM TablePositionCursor INTO @item END DEALLOCATE TablePositionCursor The script below works just for GP 2010 since the columns in the IV00102 have changed from version to version. If you need it for prior versions, please email me and I will send it to you. Disclaimer: I tested this on limited data, if you find an issue or have a suggestion for improvement, please let me know and I will post the update here for everyone. This blog is provided "AS IS" with no warranties, and confers no rights.

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How do I stop ubuntu from detaching minimize/maximuze/close buttons?

- by Shahbaz

Some time ago I managed to get ubuntu to keep the window menubars in the menu rather than the bar above (I'm not sure if this part is unity or compiz, or what's the difference). That was by removing indicator-appmenu Anyway, so now everything is fine except one thing: If I have a window that is full screen, the minimize/maximize/close buttons are still grabbed by the bar on the top. Usually this doesn't cause a problem because the upper-left corner of the full screen window and the whole screen are not too far apart. However, one thing happens to me a lot, and that is I am working on something (programming), then I need to check some things from other places so I open some windows, see what I want and switch back to my work. Those windows however are temporary so at some point I want to close them. Now here's what happens: I have the focus on some window and I can't close the maximized window behind it unless I click on the window first, so that the buttons appear and then close it. I couldn't find anything on the internet about this. Is this something that's hardcoded in unity/compiz/whatever or is there actually a way to configure this?

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Website not available everywhere

- by Cedric Reichenbach

Today I noticed my website http://mint-nachhilfe.ch/ was down, but other people (located in different networks) said it looks up from there. When I came home, I double-checked, and I can really reach it from here. Also, this website considers it down. Some facts: It's a Tomcat webapp, connected to an Apache2 server. I restarted both, no change. Another (ruby on rails) application is connected to this Apache2, which I couldn't reach either, but is considered online by above check website. At any point, I could directly connect to the Tomcat over http://mint-nachhilfe.ch:8080! I don't know how to go on searching for the root error. I assume it's related to the Apache2 server, but how could that be?

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XNA calculate normals for linesegment

- by Gerhman

I am quite new to 3D graphical programming and thus far only understand that normal somehow define the direction in which a vertex faces and therefore the direction in which light is reflected. I have now idea how they are calculated though, only that they are defined by a Vector3. For a visualizer that I am creating I am importing a bunch of coordinate which represent layer upon layer of line segments. At the moment I am only using a vertex buffer and adding the start and end point of each line and then rendering a linelist. The thing is now that I need to calculate the normal for the vertices of these line segments so that I can get some realistic lighting. I have no idea how to calculate these normal but I know they all face sideways and not up or down. To calculate them all I have are the start and end positions of each line segment. The below image is a representation of what I think I need to do in the case of an example layer: The red arrows represent the normal that should be calculates, the blue text represent the coordinates of the vertices and the green numbers represent their indices. I would greatly appreciate it if someone could please explain to me how I should calculate these normal.

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How to configure remote access to multiple subnets behind a SonicWALL NSA 2400

- by Kyle Noland

I have a client that uses a SonicWALL NSA 2400 as their firewall. I need to setup a second LAN subnet for a handful of PC. Management has decided that there should be a second subnet even though intend to allow access across the two subnets - I know... I'm having trouble getting communication across the 2 subnets. I can ping each gateway, but I cannot ping or seem to route traffic fron subnet A to subnet B. Here is my current setup: X0 Interface: LAN zone with IP addres 192.168.1.1 X1 Interface: WAN zone with WAN IP address X2 Interface: LAN zone with IP address 192.168.75.1 I have configured ARP and routes for the secondar subnet (X2) according to this SonicWALL KB article: http://www.sonicwall.com/downloads/supporting_multiple_firewalled_subnets_on_sonicos_enhanced.pdf using "Example 1". At this point I don't minding if I have to throw the SonicWALL GVC software VPN client into the mix to make it work. It feel like I have an Access Rule issue, but for testing I made LAN LAN, WAN LAN and VPN LAN rules wide open with the same results.

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Terminal command to send data (plain text string) to a port at a remote computer.

- by Eddy

I am trying to send data (plain text string) to a port at a remote computer using terminal utility. The string would be used to trigger something on the remote computer running a program that would listen to that specific port. I used netcat command and tried a few combination of the following but can't seem to get the parameter right. Can someone point me out where am I doing wrong? eddy-2:Desktop eddy$ nc IPADDRESS PORT woc.txt eddy-2:Desktop eddy$ nc IPADDRESS PORT < woc.txt P.S: woc.txt contains plain text string of the said command. Edit: I am trying to send a string from OSX to Windows XP where the specific port is open by default.

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What is the simplest, open-source webmail frontend available?

- by josePhoenix

I am working on a project to create a few extremely stripped down interfaces for common Web/Internet tasks in order to make computers accessible to my visually impaired grandmother. Currently she uses Mac OS X Mail.app, but I had the idea that I could re-skin a webmail interface running on my own server to make it easier for her to use. The ideal webmail interface to use as a starting point would be without frames or AJAX and written in Python, Perl, or PHP5+, though any setup could work as long as the template and stylesheet files were separate from the application itself. This frontend must also connect to a remote IMAP server, since her email account is with her ISP and not on my server. Can anyone recommend a bare-bones, no-nonsense webmail interface that would work for this?

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Is it possible to render and style a <title> element from within the <head> of an html document?

- by Brian Z

Is it possible to render and style a <title> element from within the <head> of an html document? I thought it was impossible to render information from the <head>, but the system status page for 37signals.com seems to be doing just that - http://status.37signals.com/. If you inspect the element at the very top of the page, the text that reads "37signals System Status", you'll see that the part of the DOM that is generating the text is the <head>'s <title>, and the css is as follows: title { display: block; margin: 10px auto; max-width: 840px; width: 100%; padding: 0 20px; float: left; color: black; text-rendering: optimizelegibility; -moz-box-sizing: border-box; box-sizing: border-box; } Can someone confirm that the <title> info from the <head> is indeed what is being rendered? If so, can someone point to documentation that defines this capability as I have not found any? I have applied the above css to an html document on my local web server using the same browser (chromium, os x 10.8.5) as the 37signals site was viewed on, yet my file did not display the <head>'s <title>.

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Canon MG6100 series USB Printer not mounting

- by user35201

Printer MP6150 driver installed itself upon plugging in the printer. Printer is recognized (lsusb shows it) but does not mount. If the printer is recognized, the driver must be working (or?), but something is blocking the system from mounting the printer. Tried the usual things: power of printer, restart Ubuntu etc. Listed below result of lsusb and fstab: hans@kontor-linux:~$ lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 004: ID 04a9:174a Canon, Inc. Bus 002 Device 002: ID 1058:1001 Western Digital Technologies, Inc. External Hard Disk [Elements] Bus 004 Device 002: ID 046d:c517 Logitech, Inc. LX710 Cordless Desktop Laser hans@kontor-linux:~$ sudo cat /etc/fstab [sudo] password for hans: # /etc/fstab: static file system information. # # Use 'blkid' to print the universally unique identifier for a # device; this may be used with UUID= as a more robust way to name devices # that works even if disks are added and removed. See fstab(5). # # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc nodev,noexec,nosuid 0 0 # / was on /dev/sda6 during installation UUID=eaf3b38d-1c81-4de9-98d4-3834d674ff6e / ext4 errors=remount-ro 0 1 # swap was on /dev/sda5 during installation UUID=93a667d3-6132-45b5-ad51-1f8a46c5b437 none swap sw 0 0

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Sharing an external hard drive in Ubuntu using Samba

- by cambraca

/media/MYDISK is where my hard drive is mounted automatically. I created a symlink using: ln -s /media/MYDISK /home/camilo/MYDISK chmod 777 /home/camilo/MYDISK I'm setting up smb.conf like this: [myshare1] comment = external disk browsable = yes path = /home/camilo/MYDISK guest ok = yes read only = no create mask = 0775 Also, in the [global] section I tried adding the following lines: follow symlinks = yes wide links = yes unix extensions = no The problem is that when browsing the shared folder in Windows 7, I get a "\\etc\myshare1 is not accessible" error. When pointing the path to a regular folder it works fine. Also, when I point it directly to /media/MYDISK, it shows the same error. EDIT: to make it more interesting, I have no graphical interface, so I need to touch the config files directly..

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2D Collision masks for handling slopes

- by JiminyCricket

I've been looking at the example at: http://create.msdn.com/en-US/education/catalog/tutorial/collision_2d_perpixel and am trying to figure out how to adjust the sprite once a collision has been detected. As David suggested at XNA 4.0 2D sidescroller variable terrain heightmap for walking/collision, I made a few sensor points (feet, sides, bottom center, etc.) and can easily detect when these points actually collide with non-transparent portions of a second texture (simple slope). I'm having trouble with the algorithm of how I would actually adjust the sprite position based on a collision. Say I detect a collision with the slope at the sprite's right foot. How can I scan the slope texture data to find the Y position to place the sprite's foot so it is no longer inside the slope? The way it is stored as a 1D array in the example is a bit confusing, should I try to store the data as a 2D array instead? For test purposes, I'm thinking of just using the slope texture alpha itself as a primitive and easy collision mask (no grass bits or anything besides a simple non-linear slope). Then, as in the example, I find the coordinates of any collisions between the slope texture and the sprite's sensors and mark these special sensor collisions as having occurred. Finally, in the case of moving up a slope, I would scan for the first transparent pixel above (in the texture's Ys at that X) the right foot collision point and set that as the new height of the sprite. I'm a little unclear also on when I should make these adjustments. Collisions are checked on every game.update() so would I quickly change the position of the sprite before the next update is called? I also noticed several people mention that it's best to separate collision checks horizontally and vertically, why is that exactly? Open to any suggestions if this is an inefficient or inaccurate way of handling this. I wish MSDN had provided an example of something like this, I didn't know it would be so much more complex than NES Mario style pure box platforming!

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vmware player xorg driver broke after ubuntu 12.04 LTS automatic system update on 06/07/2014

- by user291828

I am running Ubuntu 12.04 LTS as a virtual machine on a Windows 7 host using vmware player 6.0.2. On Sat. 06/07/2014, Ubuntu performed an automatic system update as it does regularly, however after reboot, the display driver seems to be broken which causes the screen to split into many identical panels. This pretty much rendered the VM unusable. Below is the log entry for that update from /var/log/apt/history.log It appears that at least one of these updates have caused this problem. The exact same problem has been reported on the vmware forum as well, see https://communities.vmware.com/message/2388776#2388776 So far I have not been able so find a solution. Content in /var/log/apt/history.log Start-Date: 2014-06-07 15:04:46 Commandline: aptdaemon role='role-commit-packages' sender=':1.65' Install: linux-headers-3.2.0-64:amd64 (3.2.0-64.97), linux-image-3.2.0-64-generic:amd64 (3.2.0-64.97), linux-headers-3.2.0-64-generic:amd64 (3.2.0-64.97) Upgrade: iproute:amd64 (20111117-1ubuntu2.1, 20111117-1ubuntu2.3), libknewstuff3-4:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libkdeclarative5:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libnepomukquery4a:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libgnutls-openssl27:amd64 (2.12.14-5ubuntu3.7, 2.12.14-5ubuntu3.8), libthreadweaver4:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libkdecore5:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libnepomukutils4:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libktexteditor4:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), linux-generic:amd64 (3.2.0.63.75, 3.2.0.64.76), libkmediaplayer4:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libkrosscore4:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libgnutls26:amd64 (2.12.14-5ubuntu3.7, 2.12.14-5ubuntu3.8), libgnutls26:i386 (2.12.14-5ubuntu3.7, 2.12.14-5ubuntu3.8), libsolid4:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libnepomuk4:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libkdnssd4:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libkparts4:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), kdoctools:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libssl-dev:amd64 (1.0.1-4ubuntu5.13, 1.0.1-4ubuntu5.14), libssl-doc:amd64 (1.0.1-4ubuntu5.13, 1.0.1-4ubuntu5.14), libkidletime4:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), linux-headers-generic:amd64 (3.2.0.63.75, 3.2.0.64.76), linux-image-generic:amd64 (3.2.0.63.75, 3.2.0.64.76), libkcmutils4:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libkfile4:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libkpty4:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libkntlm4:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libplasma3:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libkemoticons4:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), kdelibs-bin:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libkdewebkit5:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libkjsembed4:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libkio5:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libkjsapi4:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), openssl:amd64 (1.0.1-4ubuntu5.13, 1.0.1-4ubuntu5.14), kdelibs5-data:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), linux-libc-dev:amd64 (3.2.0-63.95, 3.2.0-64.97), libkde3support4:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libknotifyconfig4:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), kdelibs5-plugins:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libkhtml5:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libkdeui5:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libkdesu5:amd64 (4.8.5-0ubuntu0.2, 4.8.5-0ubuntu0.3), libssl1.0.0:amd64 (1.0.1-4ubuntu5.13, 1.0.1-4ubuntu5.14), libssl1.0.0:i386 (1.0.1-4ubuntu5.13, 1.0.1-4ubuntu5.14) End-Date: 2014-06-07 15:09:08

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Is it reasonable to use my Time Machine backup to migrate to a new primary hard drive?

- by Michael Haren

I'm planning to upgrade my MacBook's harddrive. I already use Time Machine to back up the system to an external drive. Is it reasonable to use Time Machine to restore my system to the new laptop drive, once I install it? I mean, a restore like this really ought to be fine, right? That's the point of it, after all! I know imaging the drive would be more appropriate but this plan seems a whole lot easier (albeit probably slower), with practically no risk since my original drive won't be involved. A second question would then be, are there any considerations to be made when doing a Time Machine restore?

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Unable to log into Windows XP Pro Domain Not Available

- by Belliez

Trying to access an old laptop I have but at the windows login screen I attempt to log in and get the message "Unable to log in because is unavailable". This laptop is not on a domain or a network and I do not know the computer name. I have blanked the passwords of the local administrator and user account using Offline NT Password and Registry Editor but still unable to log in? Any advice would be grateful or if you can point me to the registry location I can edit or delete to remove the domain. Thanks

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I know fundamental programming. But how do I get started in game development now?

- by Rohan Menon

I'm a 20 year old programming student. I know fundamental programming in BASIC, C, C++ and JAVA. What I wanted to ask is, where do I go from here? Are there any books that the community can mention that will help me develop a game or at least learn game development? I've had a lot of ideas and really want to make some sort of prototype to see if I'm suited for the industry. I really don't mind learning any new languages but I need to know what I should begin with. A good book that will help with a little more understanding as I go up will be very helpful. Maybe a tutorial to develop some basic 2D games like a side-scroller, snake or pocket tanks in an easy to understand SDK? I know that to get some credit under your belt, you need to be able to make a few games on your own. Also, what platform should I start on? The PC, iOS or Android (as an introduction) for now. I don't want to get into high level game design just yet. Just something a bit basic to help out in future development. Anything pointing me in the right direction will be really really helpful. Edit: Also, I want to say that I'm looking towards this from a game designer's point of view more than a game programmer. I want suggestions on any SDKs or easy to use programs I can use to understand game design. Then delve deeper into the programming after that. Not as employment but as developing your own games (for now).

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