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  • Movement in RPG

    - by user1264811
    I want to make an RPG game in which I move tile by tile. So when I hit up, the tile row that I am on decreases by one for example. Also, it's supposed to be a slow movement so that I can see the change in tile, i.e. I can see my sprite move from tile to tile. Currently, with the code I have, when I hit a direction on my keyboard, I move several blocks within seconds and by the time I release the button I have already gotten a nullPointerException error because I have left the map. How can I slow down the movement?

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  • Should I close database connections after use in PHP?

    - by Sprottenwels
    I wonder if I should close any unnecessary database connection inside of my PHP scripts. I am aware of the fact that database connections are closed implicitly when the block stops executing and 'manually' closing the connections could kinda bloat the codebase with unnecessary code. But shouldn't I do so in order to make by code as readable and as easy understandable as possible, while also preventing several possible issues during run time? Also, if I would do, would it be enough to unset() my database object?

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  • Ubuntu 10.10 USB drive not showing

    - by Ben
    USB is detecting but not showing the drives or mount details. Nothing there inside my /media folder and /mnt folder. I already enabled automatic mount and give privilege to user also. My sudo fdisk -l shows like: Disk /dev/sda: 250.1 GB, 250059350016 bytes 255 heads, 63 sectors/track, 30401 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x000d3ba7 Device Boot Start End Blocks Id System /dev/sda1 * 1 29637 238053376 83 Linux /dev/sda2 29637 30402 6142977 5 Extended /dev/sda5 29637 30402 6142976 82 Linux swap / Solaris Any idea?

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  • Google I/O 2012 - Making Google Product Search Work for You Using the Content API for Shopping

    Google I/O 2012 - Making Google Product Search Work for You Using the Content API for Shopping Mayuresh Saoji, Danny Hermes To get the best out of product search, merchants need to provide complete and accurate product information, as well as fresh price and availability data for all products. This session will provide merchants with concrete steps they can take to improve their data quality using the Content API for Shopping. We will provide details on when it makes sense to use the Content API to submit data (as opposed to Feeds), and how to use the API. We will also go into details on how to debug API requests and errors, and talk about general best practices to follow in order to use the API optimally and efficiently. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 35 1 ratings Time: 43:50 More in Science & Technology

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  • Google I/O 2012 - Knowledge-Based Application Design Patterns

    Google I/O 2012 - Knowledge-Based Application Design Patterns Shawn Simister In this talk we'll look at emerging design patterns for building web applications that take advantage of large-scale, structured data. We'll look at open datasets like Wikipedia and Freebase as well as structured markup like Schema.org and RDFa to see what new types of applications these technologies open up for developers. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 1 0 ratings Time: 56:55 More in Science & Technology

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  • GDL Presents: Creative Sandbox | YouTube API

    GDL Presents: Creative Sandbox | YouTube API Tune in to hear about two cool, innovative applications of the YouTube API, Meet the Prius and Le Club Perrier, from the core creative teams at Saatchi & Saatchi LA, Stopp LA and Ogilvy & Mather in conversation with a YouTube Developer Relations expert. They'll talk about how they pushed the possibilities of the YouTube API - and will inspire you to do the same. From: GoogleDevelopers Views: 0 0 ratings Time: 01:00:00 More in Science & Technology

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  • Solving the context menu problem with drag and drop in trees

    - by Frank Nimphius
    Normal 0 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-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; 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-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} The following drag-and-drop problem has been reported on OTN: An ADF Faces tree component is configured with a af:collectionDropTarget tag to handle drop events. The same tree component also has a context menu defined that is shown when users select the tree with the right mouse button. The problem now was - and I could reproduce this - that the context menu stopped working after the first time the tree handled a drop event. The drag and drop use case is to associate employees from a table to a department in the tree using drag and drop. The drop handler code in the managed bean looked up the tree node that received the drop event to determine the department ID to assign to the employee. For this code similar to the one shown below was used List dropRowKey = (List) dropEvent.getDropSite(); //if no dropsite then drop area was not a data area if(dropRowKey == null){    return DnDAction.NONE; }                tree.setRowKey(dropRowKey); JUCtrlHierNodeBinding dropNode = (JUCtrlHierNodeBinding) tree.getRowData(); Normal 0 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-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; 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-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Normal 0 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-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; 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-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} So what happens in this code? The drop event contains the dropSite reference, which is the row key of the tree node that received the drop event. The code then sets the key to the tree in a call to getRowDate() returns the node information for the drop target (the department). This however causes the tree state to go out of synch with its model (ADF tree binding), which is known to cause issues. In this use case the issue caused by this is that the context menu no longer shows up. To fix the problem, the code needs to be changes to read the current row key from the key, then perform the drop operation and at the end set the origin (or model) row key back //memorize current row key Object currentRowKey = tree.getRowKey();        List dropRowKey = (List) dropEvent.getDropSite(); //if no dropsite then drop area was not a data area if(dropRowKey == null){   return DnDAction.NONE;   }              tree.setRowKey(dropRowKey); JUCtrlHierNodeBinding dropNode = (JUCtrlHierNodeBinding) tree.getRowData(); ... do your stuff here .... //set current row key back tree.setRowKey(currentRowKey); AdfFacesContext.getCurrentInstance().addPartialTarget(tree); Node the code line that sets the row key back to its original value.

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  • Google I/O 2012 - Writing Secure Web Apps and Chrome Extensions

    Google I/O 2012 - Writing Secure Web Apps and Chrome Extensions Jorge Lucangeli Obes Today, a carefully developed web app can boast a high level of security, by taking advantage of several technologies: HTML5, CSP, NaCl, and the Chrome extension framework. The objective of this session is to show how these technologies allow a developer to create a web app that rivals or exceeds a desktop app in features, while remaining more secure than its desktop counterpart. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 46 1 ratings Time: 56:16 More in Science & Technology

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  • How to speed up rsync/tar of large Maildir

    - by psusi
    I have a very large Maildir I am copying to a new machine ( over 100 BaseT ) with rsync. The progress is slow. VERY SLOW. Like 1 MB/s slow. I think this is because it is a lot of small files that are being read in an order that essentially is random with respect to where the blocks are stored on disk, causing a massive seek storm. I get similar results when trying to tar the directory. Is there a way to get rsync/tar to read in disk block order, or otherwise overcome this problem?

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  • GDD-BR 2010 [1G] Android: Building High-Performance Applications

    GDD-BR 2010 [1G] Android: Building High-Performance Applications Speaker: Tim Bray Track: Android Time: G [16:30 - 17:15] Room: 1 Level: 151 Build Android applications that are smooth, fast, responsive, and a pleasure to use. Also, learn about the tools and techniques we use to track down and fix performance problems. From: GoogleDevelopers Views: 20 0 ratings Time: 33:34 More in Science & Technology

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  • GDD-BR 2010 [1F] Flexible Android Applications

    GDD-BR 2010 [1F] Flexible Android Applications Speaker: Fred Chung Track: Android Time slot: F[15:30 - 16:15] Room: 1 Level: 201 Android provides facilities to make flexible applications that work well for everyone on any piece of hardware running Android. This session will cover localization and internationalization, as well as how to write an app that can detect and adapt to the hardware and software resources available to it. From: GoogleDevelopers Views: 10 0 ratings Time: 37:47 More in Science & Technology

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  • More Than a Map - Get Flight

    More Than a Map - Get Flight In Sydney, Australia, We met up with GetFlight founder Ian Cummings at the Fishburners coworking space. GetFlight is airfare search site based that uses the Google Maps API to help users discover cheap airfare to great destinations. Read more on morethanamap.com #morethanamap From: GoogleDevelopers Views: 864 20 ratings Time: 02:00 More in Science & Technology

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