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;;; Starling Game Engine
;;; Copyright © 2018 David Thompson <davet@gnu.org>
;;;
;;; Starling is free software: you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published
;;; by the Free Software Foundation, either version 3 of the License,
;;; or (at your option) any later version.
;;;
;;; Starling is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
;;; General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with Starling.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:
;;
;; Development environment for GNU Guix.
;;
;; To setup the development environment, run the following:
;;
;;    guix environment -l guix.scm
;;    ./bootstrap && ./configure;
;;
;; To build the development snapshot, run:
;;
;;    guix build -f guix.scm
;;
;; To install the development snapshot, run:
;;
;;    guix install -f guix.scm
;;
;;; Code:

(use-modules (ice-9 match)
             (srfi srfi-1)
             (guix packages)
             (guix licenses)
             (guix download)
             (guix git-download)
             (guix build-system gnu)
             (gnu packages)
             (gnu packages autotools)
             (gnu packages pkg-config)
             (gnu packages texinfo)
             (gnu packages guile)
             (gnu packages gl)
             (gnu packages sdl)
             (gnu packages maths)
             (gnu packages image))

(define (package-with-guile p guile)
  (package
    (inherit p)
    (inputs
     (map (match-lambda
            (("guile" _)
             `("guile" ,guile))
            (input input))
          (package-inputs p)))))

(define (package-with-guile-2.2 p)
  (package-with-guile p guile-2.2.4))

(define guile-sdl2
  (let ((commit "5a6ea82c9ad859972c01d2908b2f66fb3addcfbb"))
    (package
      (name "guile-sdl2")
      (version "0.2.0-1.")
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "git://dthompson.us/guile-sdl2.git")
                      (commit commit)))
                (sha256
                 (base32
                  "1gc8f24l2y939a673kix0jd0kqr4zgwr8kd5qy60czqbqbjqrn96"))))
      (build-system gnu-build-system)
      (arguments
       '(#:configure-flags
         (list (string-append "--with-libsdl2-prefix="
                              (assoc-ref %build-inputs "sdl2"))
               (string-append "--with-libsdl2-image-prefix="
                              (assoc-ref %build-inputs "sdl2-image"))
               (string-append "--with-libsdl2-ttf-prefix="
                              (assoc-ref %build-inputs "sdl2-ttf"))
               (string-append "--with-libsdl2-mixer-prefix="
                              (assoc-ref %build-inputs "sdl2-mixer")))
         #:make-flags '("GUILE_AUTO_COMPILE=0")
         #:phases
         (modify-phases %standard-phases
           (add-after 'unpack 'bootstrap
                      (lambda _
                        (zero? (system* "sh" "bootstrap"))))
           (add-after 'configure 'patch-makefile
                      (lambda _
                        ;; Install compiled Guile files in the expected place.
                        (substitute* '("Makefile")
                          (("^godir = .*$")
                           "godir = $(moddir)\n")))))))
      (native-inputs
       `(("autoconf" ,autoconf)
         ("automake" ,automake)
         ("pkg-config" ,pkg-config)
         ("texinfo" ,texinfo)))
      (inputs
       `(("guile" ,guile-2.2.4)
         ("sdl2" ,sdl2)
         ("sdl2-image" ,sdl2-image)
         ("sdl2-mixer" ,sdl2-mixer)
         ("sdl2-ttf" ,sdl2-ttf)))
      (synopsis "Guile bindings for SDL2")
      (description "Guile-sdl2 provides pure Guile Scheme bindings to the
SDL2 C shared library via the foreign function interface.")
      (home-page "https://git.dthompson.us/guile-sdl2.git")
      (license lgpl3+))))

(define chickadee
  (let ((commit "b69cdffb9e86e62325b8bc5560162b044b8b30b6"))
    (package
     (name "chickadee")
     (version "0.1")
     (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "git://dthompson.us/chickadee.git")
                    (commit commit)))
              (sha256
               (base32
                "1n0kiria124wwgbbwwhd8b7r2lgs9pk9vhh3fn82rmrq7c3sk8ix"))))
     (build-system gnu-build-system)
     (arguments
      '(#:make-flags '("GUILE_AUTO_COMPILE=0")
        #:phases
        (modify-phases %standard-phases
                       (add-after 'unpack 'bootstrap
                                  (lambda _
                                    (zero? (system* "sh" "bootstrap"))))
                       (add-after 'configure 'patch-makefile
                                  (lambda _
                                    ;; Install compiled Guile files in
                                    ;; the expected place.
                                    (substitute* '("Makefile")
                                                 (("^godir = .*$")
                                                  "godir = $(moddir)\n")))))))
     (native-inputs
      `(("autoconf" ,autoconf)
        ("automake" ,automake)
        ("pkg-config" ,pkg-config)
        ("texinfo" ,texinfo)))
     (inputs
      `(("guile" ,guile-2.2.2)))
     (propagated-inputs
      `(("guile-opengl" ,(package-with-guile-2.2 guile-opengl))
        ("guile-sdl2" ,guile-sdl2)))
     (synopsis "Game development toolkit for Guile Scheme")
     (description "Chickadee is a game development toolkit for Guile
Scheme.  It contains all of the basic components needed to develop
2D/3D video games.")
     (home-page "https://dthompson.us/projects/chickadee.html")
     (license gpl3+))))

(package
  (name "starling")
  (version "0.1")
  (source #f)
  (build-system gnu-build-system)
  (native-inputs
   `(("autoconf" ,autoconf)
     ("automake" ,automake)
     ("pkg-config" ,pkg-config)
     ("texinfo" ,texinfo)))
  (inputs
   `(("guile" ,guile-2.2.4)))
  (propagated-inputs
   `(("guile-opengl" ,(package-with-guile-2.2 guile-opengl))
     ("guile-sdl2" ,guile-sdl2)
     ("chickadee" ,chickadee)))
  (synopsis "Game engine for Scheme programmers")
  (description "Starling is a game engine written in Guile Scheme.")
  (home-page "https://dthompson.us/projects/chickadee.html")
  (license gpl3+))