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      GameDev.net and CRC Press have teamed up to bring a free ebook of content curated from top titles published by CRC Press. The freebook, Practices of Game Design & Indie Game Marketing, includes chapters from The Art of Game Design: A Book of Lenses, A Practical Guide to Indie Game Marketing, and An Architectural Approach to Level Design. The GameDev.net FreeBook is relevant to game designers, developers, and those interested in learning more about the challenges in game development. We know game development can be a tough discipline and business, so we picked several chapters from CRC Press titles that we thought would be of interest to you, the GameDev.net audience, in your journey to design, develop, and market your next game. The free ebook is available through CRC Press by clicking here. The Curated Books The Art of Game Design: A Book of Lenses, Second Edition, by Jesse Schell Presents 100+ sets of questions, or different lenses, for viewing a game’s design, encompassing diverse fields such as psychology, architecture, music, film, software engineering, theme park design, mathematics, anthropology, and more. Written by one of the world's top game designers, this book describes the deepest and most fundamental principles of game design, demonstrating how tactics used in board, card, and athletic games also work in video games. It provides practical instruction on creating world-class games that will be played again and again. View it here. A Practical Guide to Indie Game Marketing, by Joel Dreskin Marketing is an essential but too frequently overlooked or minimized component of the release plan for indie games. A Practical Guide to Indie Game Marketing provides you with the tools needed to build visibility and sell your indie games. With special focus on those developers with small budgets and limited staff and resources, this book is packed with tangible recommendations and techniques that you can put to use immediately. As a seasoned professional of the indie game arena, author Joel Dreskin gives you insight into practical, real-world experiences of marketing numerous successful games and also provides stories of the failures. View it here. An Architectural Approach to Level Design This is one of the first books to integrate architectural and spatial design theory with the field of level design. The book presents architectural techniques and theories for level designers to use in their own work. It connects architecture and level design in different ways that address the practical elements of how designers construct space and the experiential elements of how and why humans interact with this space. Throughout the text, readers learn skills for spatial layout, evoking emotion through gamespaces, and creating better levels through architectural theory. View it here. Learn more and download the ebook by clicking here. Did you know? GameDev.net and CRC Press also recently teamed up to bring GDNet+ Members up to a 20% discount on all CRC Press books. Learn more about this and other benefits here.
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Ronnie Mado Solbakken

Java Sec. Levels and Running my .Jar File

2 posts in this topic

Hey, I got this weird problem with trying to run the Applets that I created. In short I'm simply unable to run them.

 

I have created a working Java code and an HTML page that runs the Applet "window" without problems. But I got a problem getting blocked by Javas security level (High). I then proceed to set this to Medium (in the Java Control Panel) but, the minute I restart the Applet, I keep getting blocked. When I revisit the Java Control Panel, I notice that the security level has been reset to High. In effect, I not only seem unable to change my security level, but I would also like to know how I can run my Applet even if the security level is high.

 

____________________

 

Application Blocked by Security Settings

 

Name: net.malabyte.MinefrontApplet

 

Location: file:/C:/Malabyte/Games/

 

Your security settings have blocked a local application from running

____________________

 

 

What's going on? My HTML and Java code has been copied verbatim with zero errors off of TheCherno on Youtube (from his serious on 3D Game Programming) and he's got no issues with it himself. I also have a direct .Jar file compiled and it runs without problems. I run Win7 and got Java 1.7.0_15-b03.

 

Thanks in advance.

Edited by Malabyte
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I've run into similar situations before, mostly when writing a file upload tool for a client (it ran as an applet that collected vast quantities of images from photographers, did post-processing on them, and uploaded them to the customer's content manager). Any time I tried to use anything more than simple writing to the screen (such as accessing sockets for the upload), my applet was blocked.
I found two solutions, both of which were needed for reliable functionality:

  • Make sure that the browser's Java plugin is up-to-date.
  • Digitally sign your applet.

You can use a self-generated cert at no cost; users will see a "this application was signed by <your name>, trust it?" type prompt when it runs, but until you're ready for a public release that's fine. There's a decent tutorial on the signing process here: http://www-personal.umich.edu/~lsiden/tutorials/signed-applet/signed-applet.html

 

I'd recommend putting the signing process into your build-chain. I use NetBeans (which in turn uses ant), so it was relatively painless to do so for me - and it's a lot easier to build and sign in one click!

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