SDL::Tutorial - introduction to Perl SDL
# to read this tutorial $ perldoc SDL::Tutorial # to run this tutorial $ perl -MSDL::Tutorial -e 1
SDL::Tutorial are incomplete and old. A new book has been started to provide a complete tutorial for SDL. See http://bit.ly/hvxc9V.
SDL, the Simple DirectMedia Layer, is a cross-platform multimedia library. These are the Perl 5 bindings. You can find out more about SDL at http://www.libsdl.org/. You can find out more about SDL perl at http://sdl.perl.org.
Creating an SDL application with Perl is easy. You have to know a few basics, though. Here's how to get up and running as quickly as possible.
All graphics in SDL live on a surface. You'll need at least one. That's what SDLx::App provides.
Of course, before you can get a surface, you need to initialize your video mode. SDL gives you several options, including whether to run in a window or take over the full screen, the size of the window, the bit depth of your colors, and whether to use hardware acceleration. For now, we'll build something really simple.
SDLx::App makes it easy to initialize video and create a surface. Here's how to ask for a windowed surface with 640x480x16 resolution:
use SDLx::App; my $app = SDLx::App->new( width => 640, height => 480, depth => 16, );
You can get more creative, especially if you use the
icon attributes in a windowed application. Here's how to set the window title of the application to
My SDL Program:
use SDLx::App; my $app = SDLx::App->new( height => 640, width => 480, depth => 16, title => 'My SDL Program', );
Setting an icon is a little more involved -- you have to load an image onto a surface. That's a bit more complicated, but see the
name parameter to
SDL::Surface-new()> if you want to skip ahead.
$app from the code above is just an SDL surface with some extra sugar, it behaves much like SDL::Surface. In particular, the all-important
update methods work. You'll need to create SDL::Rect objects representing sources of graphics to draw onto the
blit them there, then
Note: "blitting" is copying a chunk of memory from one place to another.
That, however, is another tutorial.
basic rectangle drawing and animation
basic image loading and animation
Copyright (c) 2003 - 2004, chromatic. 2009 - 2010, kthakore. All rights reserved. This module is distributed under the same terms as Perl itself, in the hope that it is useful but certainly under no guarantee.