<div class="blog">
<h1 id="NAME">
-The Build Process of SDL Perl
+SDL Perl Game Contest - week 4 roundup
</h1>
<div class="CONTENT">
-<p>A while ago I had a long chat with mst on why SDL uses Module::Build rather then Make. I told him it is a simple matter of code inertia. The existing Module::Build system has worked well for us so far. Never the less, he convinced me that switching to Make will improve debugging the Build system. But to be able to switch we will need to completely replace the Build system. I am not prepared to do that so I will just present the requirements so mst or someone else can at least attempt to switch.</p><br />
-<br />
-<h3>The Build Process </h3><br />
-<b> Alien::SDL </b><br />
-<br />
-<p>SDL Perl depends on a few C libraries for a complete install. This is handled by Alien::SDL. First we look for existing SDL libraries and dependencies by doing a <a href="http://github.com/kthakore/Alien_SDL/blob/master/inc/My/Utility.pm#L581">File::Find</a> for headers. If these headers are found we present and option for the user to use those. We then store these locations in Alien::SDL->config options 'cflags', 'prefix' and 'libs'. If we do not have libraries available even for a minimum SDL installed ( SDL.h is not found). We provide several platform specific options. </p><br />
-<p>For windows we have a simpler process. We download<a href="http://github.com/kthakore/Alien_SDL/blob/master/inc/My/Utility.pm#L7"> prebuilt </a>binaries ( and checksum ) based on the user's selection and just copy them in to the right location. Again the 'prefix', 'cflags', and 'libs' is saved in Alien::SDL->config. </p><br />
-<p>For *nix/MacOSX we download sources and attempt to compile them. To be able to do this we download several other dependencies like libpng, jpeg and pango. You can see how we do this using hashes <a href="http://github.com/kthakore/Alien_SDL/blob/master/inc/My/Utility.pm#L404">here</a>. During the compile process we also apply patches as needed for the <a href="http://github.com/kthakore/Alien_SDL/blob/master/inc/My/Utility.pm#L430">sources</a>. Once this is done we can head to SDL Build.PL </p><br />
-<b> SDL Perl dependency resolution </b><br />
-<br />
-SDL's Build is responsible for linking the right libraries to the correct XS. If libraries are missing it will disable the component (not put it in SDL->config). <br />
-<br />
-<p>For example to build <a href="http://github.com/kthakore/SDL_perl/blob/master/Build.PL#L342">Image.xs</a> we require libsdl, libsdl_image and lib[jpg|png|tiff]. So we would check for these headers in the prefix provided by Alien::SDL->config. If they are not provided we will disable the SDL::Image module. </p><br />
-<p>More over the availability of each library is specified as a -DMACRO to the gcc compiler. This way we can prevent XS failures due to missing libraries using #DEFINES. Here the SDL_image macro is <a href="http://github.com/kthakore/SDL_perl/blob/master/Build.PL#L422">defined</a> and <a href="http://github.com/kthakore/SDL_perl/blob/master/src/Image.xs#L13">used</a>. The availability of the module is then available from <a href="http://github.com/kthakore/SDL_perl/blob/master/t/image.t#L20">SDL::Config->has()</a> <br />
-<br />
-<br />
-<b> Conclusion </b> <br />
-<p>This is a high level overview of our Build process, because frankly I hate traumatizing my brain with this again. Credits have to go to FROGGS and kmx for helping with this Build scheme. Hopefully my post have helped people at the very least appreciate the problem scope of this Build system. That said I believe a fresh written build system, with these requirements in mind, will be more then welcome.<br />
-</p><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/3102167581424744259-4514794130108689562?l=yapgh.blogspot.com' alt='' /></div>
-<p><a href="http://feedads.g.doubleclick.net/~a/SHI8waMCUMOT4LmhUSkV3-Y1cK8/0/da"><img src="http://feedads.g.doubleclick.net/~a/SHI8waMCUMOT4LmhUSkV3-Y1cK8/0/di" border="0" ismap="true"></img></a><br/>
-<a href="http://feedads.g.doubleclick.net/~a/SHI8waMCUMOT4LmhUSkV3-Y1cK8/1/da"><img src="http://feedads.g.doubleclick.net/~a/SHI8waMCUMOT4LmhUSkV3-Y1cK8/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/YetAnotherPerlGameHackeryapgh/~4/fTwVmM222rA" height="1" width="1"/></div></div>
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+<span style="font-style: italic;">Hi everyone! Sorry for delaying this post, it's been one hellish week...</span><br /><br /><br />Wow, 4 weeks already... can you believe it? I'm really sad this is the last round of the <a href="http://yapgh.blogspot.com/2011/02/sdl-perl-game-contest.html">SDL Perl Game Contest</a> - I guess time flies when you're having fun - but I'm also pretty excited to show you guys the awesome entries we had this week. Check'em out!<br /><br /><br /><a href="https://github.com/jtpalmer/sdl-contest/tree/master/week4">Electric Lines</a>, by JT Palmer (jtpalmer)<br /><br /><a href="http://3.bp.blogspot.com/-ds9hez_g5_M/TZGM6bZ-E6I/AAAAAAAAAMQ/SUWurMA8WzU/s1600/eletriclines.png"><img style="cursor: pointer; width: 400px; height: 312px;" src="http://3.bp.blogspot.com/-ds9hez_g5_M/TZGM6bZ-E6I/AAAAAAAAAMQ/SUWurMA8WzU/s400/eletriclines.png" alt="" id="BLOGGER_PHOTO_ID_5589403547960480674" border="0" /></a><br /><br />JT does it again, providing players with a very challenging (and fun) piece! Electric Lines was inspired by <span style="font-style: italic;">Mario's Slides</span>, a mini-game in Nintendo's Super Mario 64 and New Super Mario Bros., both for the DS console. Drag your mouse cursor to draw lines across the horizontal paths in order to guide the electric energy balls to the exit, but watch out: you can only hit the red circles three times!<br /><br /><br /><a href="http://paste.scsys.co.uk/95809">Rand Explorer</a>, by Blaise Roth (Blaizer)<br /><br /><a href="http://2.bp.blogspot.com/-XLV3AxbjDcY/TZgEcLKj6NI/AAAAAAAAAMw/K_4RNxLYhGU/s1600/randexplorer.png"><img style="cursor: pointer; width: 400px; height: 279px;" src="http://2.bp.blogspot.com/-XLV3AxbjDcY/TZgEcLKj6NI/AAAAAAAAAMw/K_4RNxLYhGU/s400/randexplorer.png" alt="" id="BLOGGER_PHOTO_ID_5591223819460405458" border="0" /></a><br /><br />This quick-and-dirty submission was born a classic. In Rand Explorer, you use the spacebar to control a white square through a colored tunnel. As you pick up speed, you must steer clear of the narrow walls and obstacles and prove your skills to travel the furthest. Awesome!<br /><br /><br /><a href="https://github.com/garu/Games-GrooveBoard">Groove Board</a>, by... me (garu)<br /><br /><a href="http://2.bp.blogspot.com/-3x3Lv9JD5zQ/TZGPb_KTZ-I/AAAAAAAAAMg/RqEynHk4EPY/s1600/grooveboard.png"><img style="cursor: pointer; width: 400px; height: 312px;" src="http://2.bp.blogspot.com/-3x3Lv9JD5zQ/TZGPb_KTZ-I/AAAAAAAAAMg/RqEynHk4EPY/s400/grooveboard.png" alt="" id="BLOGGER_PHOTO_ID_5589406323517384674" border="0" /></a><br /><br />Groove Board is a music rhythm game, similar to Dance Dance Revolution (DDR) and StepMania. I'm particularly proud of this one since it was done in a single day! The gameplay is dead simple: just listen to the music and press the arrow keys when the scrolling arrows reach the top ones. Have fun!<br /><br /><br /><span style="font-weight: bold;font-size:130%;" >Wrapping Up</span><br /><br />Thus ends the very first SDL Perl Game Contest - and what a rush! We had a total of 16 new games written from scratch in just one month!! I'd like to take this opportunity and thank everyone that joined and wrote all those amazing entries, week after week. You guys rock!<br /><br />Also, a big thanks to all of you that followed this one-month challenge, reading the weekly posts and playing the games. I had a good time and hope you guys had a good time too!<br /><br />The Contest is over, but that doesn't mean you have to wait for the next one to turn your awesome game idea into a reality. Just install the <a href="http://search.cpan.org/perldoc?SDL">latest SDL Perl</a> distribution, <a href="http://sdlperl.ath.cx/releases/SDL_Manual.pdf">read the fine manual</a> and get cracking! If you have any questions at all just drop by the IRC channel (#sdl at irc.perl.org) or send them to the <a href="http://sdl.perl.org/#Contribute">SDL Perl mailing list</a>.<br /><br />See ya =)<div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/3102167581424744259-4055543974288598294?l=yapgh.blogspot.com' alt='' /></div>
+<p><a href="http://feedads.g.doubleclick.net/~a/1ZaWPiKPuHPeuSERyQjFfz3TN6s/0/da"><img src="http://feedads.g.doubleclick.net/~a/1ZaWPiKPuHPeuSERyQjFfz3TN6s/0/di" border="0" ismap="true"></img></a><br/>
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