[PATCH] gnu: Add bzflag.

+++ b/gnu/packages/games.scm

+  #:use-module (gnu packages adns)

+(define-public bzflag

+  (package

+    (name "bzflag")

+    (version "2.4.20")

+    (source

+     (origin

+       (method url-fetch)

+       (uri (string-append "https://download.bzflag.org/bzflag/source/"

+                           version "/bzflag-" version ".tar.bz2"))

+       (sha256

+        (base32 "16brxqmfiyz4j4lb8ihzjcbwqmpsms6vm3ijbp34lnw0blbwdjb2"))))

+    (build-system gnu-build-system)

+    (arguments

+     `(#:phases

+       (modify-phases %standard-phases

+         (add-after 'install 'install-desktop-file-and-icons

+           (lambda* (#:key outputs #:allow-other-keys)

+             (let* ((share (string-append (assoc-ref outputs "out") "/share"))

+                    (data (string-append share "/bzflag"))

+                    (hicolor (string-append share "/icons/hicolor"))

+                    (applications (string-append share "/applications")))

+               ;; Move desktop file.

+               (install-file (string-append data "/bzflag.desktop")

+                             applications)

+               ;; Install icons.

+               (for-each (lambda (size)

+                           (let* ((dim (string-append size "x" size))

+                                  (dir (string-append hicolor "/" dim "/apps")))

+                             (mkdir-p dir)

+                             (copy-file

+                              (string-append data "/bzflag-" dim ".png")

+                              (string-append dir "/bzflag.png"))))

+                         '("48" "256")))

+             #t)))))

+    (native-inputs

+     `(("pkg-config" ,pkg-config)))

+    (inputs

+     `(("c-ares" ,c-ares)

+       ("curl" ,curl)

+       ("glew" ,glew)

+       ("glu" ,glu)

+       ("sdl2" ,sdl2)

+       ("zlib" ,zlib)))

+    (home-page "https://www.bzflag.org/")

+    (synopsis "3D first person tank battle game")

+    (description

+     "BZFlag is a 3D multi-player multiplatform tank battle game that

+allows users to play against each other in a network environment.

+There are five teams: red, green, blue, purple and rogue (rogue tanks

+are black).  Destroying a player on another team scores a win, while

+being destroyed or destroying a teammate scores a loss.  Rogues have

+no teammates (not even other rogues), so they cannot shoot teammates

+and they do not have a team score.

+

+There are two main styles of play: capture-the-flag and free-for-all.

+In capture-the-flag, each team (except rogues) has a team base and

+each team with at least one player has a team flag.  The object is to

+capture an enemy team's flag by bringing it to your team's base.  This

+destroys every player on the captured team, subtracts one from that

+team's score, and adds one to your team's score.  In free-for-all,

+there are no team flags or team bases.  The object is simply to get as

+high a score as possible.")

+    ;; The game is dual-licensed.

+    (license (list license:lgpl2.1 license:mpl2.0))))

+