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Allegro (software)
Allegro is a software library for video game development. The functionality of the library includes support for basic 2D graphics, image manipulation, text output, audio output, MIDI music, input and timers, as well as additional routines for fixed-point and floating-point matrix arithmetic, Unicode strings, file system access, file manipulation, data files, and 3D graphics. The library is written in the C programming language and designed to be used with C, C++, or Objective-C, with bindings available for Python, Lua, Scheme, D, Go, and other languages.〔(List of Allegro language bindings )〕 Allegro comes with extensive documentation and many examples.
Allegro supports Windows, OS X, Unix-like systems, Android, and iOS, abstracting their application programming interfaces (APIs) into one portable interface. Previous versions up to 4.4 supported Windows, OS X, DOS, BeOS, and various Unix-like systems with (or without) the X Window System. There is also an independent port of Allegro on AmigaOS 4 and MorphOS.
Released under the terms of the zlib license, Allegro is free and open source software.
== History ==
Initially standing for ''Atari Low-Level Game Routines'',〔(Forum posting by Shawn Hargreaves )〕 Allegro was originally created by Shawn Hargreaves for the Atari ST in the early 1990s. However, Shawn abandoned the Atari version as he realized the platform was dying, and reimplemented his work for the Borland C++ and DJGPP compilers in 1995. Support for Borland C++ was dropped in version 2.0, and DJGPP was the only supported compiler. As DJGPP was a DOS compiler, all games which used Allegro therefore used DOS. Around 1998, Allegro branched out into several versions. A port to Windows, WinAllegro, was created, and also during this time, a Unix port of Allegro, XwinAllegro, was created. These various ports were brought together during the Allegro 3.9 WIP versions, with Allegro 4.0 being the first stable version of Allegro to support multiple platforms.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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