SDL - Simple DirectMedia Layer for Perl

Core

  use SDL;

SDL_perl is a package of perl modules that provides both functional and object orient interfaces to the Simple DirectMedia Layer for Perl 5. This package does take some liberties with the SDL API, and attempts to adhere to the spirit of both the SDL and Perl. This document describes the low-level functional SDL_perl API. For the object oriented programming interface please see the documentation provided on a per class basis.

	Nick: magnet

	Nick: Garu
	Name: Breno G. de Oliveira

	Nick: Dngor
	Name: Rocco Caputo

	Nick: nferraz
	Name: Nelson Ferraz

	Nick: acme
	Name: Leon Brocard

	Nick: FROGGS
	Name: Tobias Leich

	Nick: kthakore
	Name: Kartik Thakore

Please get libsdl packages from Fink

	perl Build.PL
	perl Build test
	perl Build bundle
	perl Build install

First set the PERL5LIB environment variable to the dependencies of your script

	%export PERL5LIB=$PERL5LIB:./lib

Use the SDLPerl executable made in the bundle and call your scripts

	%SDLPerl.app/Contents/MacOS/SDLPerl yourScript.pl

As with the C language API, SDL_perl initializes the SDL environment through the SDL::init subroutine. This routine takes a mode flag constructed through the bitwise OR product of the following constants:

* INIT_AUDIO

* INIT_VIDEO

* INIT_CDROM

* INIT_EVERYTHING

* INIT_NOPARACHUTE

* INIT_JOYSTICK

* INIT_TIMER

SDL::Init returns 0 on success, or -1 on error.

After SDL has been initialized with SDL::init you may initialize uninitialized subsystems with SDL::init_subsystem. The flags parameter is the same as that used in SDL::init.

SDL::init_subsystem returns 0 on success, or -1 on error.

SDL::quit_subsystem allows you to shut down a subsystem that has been previously initialized by SDL::init or SDL::init_subsystem. The flags tells SDL::quit_subSystem which subsystems to shut down, it uses the same values that are passed to SDL::init.

SDL::quit_subsystem doesn't returns any value.

Shuts down all SDL subsystems, unloads the dynamically linked library and frees the allocated resources. This should always be called before you exit.

SDL::quit doesn't returns any value.

SDL::was_init allows you to see which SDL subsytems have been initialized. flags is a bitwise OR'd combination of the subsystems you wish to check (see SDL::init for a list of subsystem flags). If 'flags' is 0 or SDL_INIT_EVERYTHING, it returns a mask of all initialized subsystems (this does not include SDL_INIT_EVENTTHREAD or SDL_INIT_NOPARACHUTE).

The last error message set by the SDL library can be retrieved using the subroutine SDL::get_error, which returns a scalar containing the text of the message if any.

SDL::get_error sets the SDL error to a printf style formatted string. it doesn't returns any values.

Sets the SDL error message to one of several predefined strings specified by code.

code can be :

SDL_errorcode

The corresponding error string

SDL_ENOMEM

Out of memory

SDL_EFREAD

Error reading from datastream

SDL_EFWRITE

Error writing to datastream

SDL_EFSEEK

Error seeking in datastream

SDL_UNSUPPORTED

Unknown SDL error

SDL_LASTERROR

Unknown SDL error

any other value

Unknown SDL error

Note 1: SDL_LASTERROR marks the highest numbered predefined error. Note 2: SDL also defines SDL_OutOfMemory() and SDL_Unsupported() for internal use which are equivalent to SDL_Error(SDL_ENOMEM) and SDL_Error(SDL_UNSUPPORTED) respectively.

SDL::Error doesn't returns any value.

SDL::clear_error deletes all information about the last internal SDL error. Useful if the error has been handled by the program. it doesn't returns any value.

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Need to be coded.

The last error message set by the SDL library can be retrieved using the subroutine SDL::get_error, which returns a scalar containing the text of the message if any.

This subroutine allows an application to delay further operations for atleast a number of milliseconds provided as the argument. The actual delay may be longer than the specified depending on the underlying OS.

magnet, kthakore