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;;; SPDX-License-Identifier: GPL-3.0-or-later
;;; Copyright © 2019 Pierre Neidhardt <mail@ambrevar.xyz>
;;; Copyright © 2025 Maxim Cournoyer <maxim@guixotic.coop>
(define-module (nongnu packages emulators)
#:use-module (gnu packages backup)
#:use-module (gnu packages gl)
#:use-module (gnu packages sdl)
#:use-module (guix build-system gnu)
#:use-module (guix download)
#:use-module (guix gexp)
#:use-module (guix git-download)
#:use-module ((guix licenses) #:prefix license:)
#:use-module (guix packages)
#:use-module (guix utils)
#:use-module (nonguix licenses))
(define-public dgen
(package
(name "dgen")
(version "1.33")
(source
(origin
(method url-fetch)
(uri (string-append
"mirror://sourceforge/dgen/dgen/"
version "/dgen-sdl-" version ".tar.gz"))
(sha256
(base32
"07pnvsw04jq9pdiwfhp0nr728rwqq2y6w648gz3p6a622xhc1qlr"))))
(build-system gnu-build-system)
(inputs
`(("sdl" ,sdl)
("libarchive" ,libarchive)
("libgl" ,mesa)))
(home-page "http://dgen.sourceforge.net")
(synopsis "Emulator for Sega Genesis/Mega Drive systems")
(description
"DGen isn't the best Mega Drive/Genesis emulator out there, but it works
and it's probably the most portable. It's one of the few that's x86_64
compatible. It's also perfect for command line freaks.")
(license (list license:bsd-3
;; Many non-free licenses.
(nonfree "https://sourceforge.net/p/dgen/dgen/ci/master/tree/COPYING")))))
(define-public libretro-genesis-plus-gx
;; There is no release nor tags: use the latest commit.
(let ((commit "a80e3b3b957d38961e274aa4da450245ddc63fe8")
(revision "0"))
(package
(name "libretro-genesis-plus-gx")
(version (git-version "0" revision commit))
(source (origin
(method git-fetch)
(uri (git-reference
(url "https://github.com/ekeeke/Genesis-Plus-GX")
(commit commit)))
(file-name (git-file-name name version))
(sha256
(base32
"0iqsbxw00mqc2hf0jw1v6qzccf5b40d6q1a7vv5bdi3i260py6i0"))))
(build-system gnu-build-system)
(arguments
(list
#:tests? #f ;no test suite
#:make-flags
#~(list "-f" "Makefile.libretro"
(string-append "GIT_VERSION=" #$version)
(string-append "CC=" #$(cc-for-target)))
#:phases
#~(modify-phases %standard-phases
(delete 'configure) ;no configure script
(replace 'install
(lambda _
(install-file "genesis_plus_gx_libretro.so"
(string-append #$output "/lib/libretro"))
(invoke "find" "-executable" "-name" "*.so"))))))
(home-page "https://github.com/ekeeke/Genesis-Plus-GX")
(synopsis "Accurate Sega 8/16 bit emulator")
(description "This is the Libretro port of Genesis Plus GX, a SG-1000,
Mark-III, Master System (I & II), Game Gear, Genesis/Mega Drive and Sega/Mega
CD emulator. It was originally based on Genesis Plus, from which it improves
emulation accuracy and adds support for new peripherals, cartridges and
features such as:
@itemize
@item
NTSC (60Hz) and PAL (50Hz) video hardware emulation
@item
accurate 68000, Z80 CPU emulation and synchronization
@item
accurate VDP emulation and timings
@item
sample-accurate YM2612,YM2413, SN76489 and RF5C164 PCM sound chips emulation
@item
cycle-accurate sound chips synchronization with 68000/Z80 CPU
@item
cycle-accurate 68000 and Z80 CPU synchronization
@item
optimized Main-CPU / Sub-CPU synchronization (Sega/Mega CD)
@item
accurate CDD, CDC and GFX chip emulation (Sega/Mega CD)
@item
accurate CD-DA fader emulation (Sega/Mega CD)
@item
Mode 1 cartridge support (Sega/Mega CD)
@item
Audio CD and CD+G support (Sega/Mega CD)
@item
high-quality audio resampling using Blip Buffer
@item
basic hardware latency emulation (VDP/68k, Z80/68k)
@item
full overscan area emulation (horizontal and vertical color borders)
@end itemize")
;; Redistributable but has a non-commercial clause, so does not meet the
;; GNU FSDG requirements.
(license (nonfree "file://LICENSE.txt")))))
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