From 2eac67986d62e8d81857a7148421ab79d327f3e1 Mon Sep 17 00:00:00 2001
From: David Thompson <dthompson2@worcester.edu>
Date: Fri, 5 Sep 2014 13:16:50 -0400
Subject: [PATCH 2/4] gnu: Add irrlicht.

* gnu/packages/games.scm (irrlicht): New variable.
---
 gnu/packages/games.scm | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/gnu/packages/games.scm b/gnu/packages/games.scm
index 2b6475b..3172df5 100644
--- a/gnu/packages/games.scm
+++ b/gnu/packages/games.scm
@@ -23,6 +23,7 @@
 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
 
 (define-module (gnu packages games)
+  #:use-module (srfi srfi-1)
   #:use-module ((guix licenses)
                 #:hide (zlib))
   #:use-module (guix packages)
@@ -54,6 +55,7 @@
   #:use-module (gnu packages compression)
   #:use-module (gnu packages pulseaudio)
   #:use-module (gnu packages linux)
+  #:use-module (gnu packages zip)
   #:use-module (guix build-system gnu)
   #:use-module (guix build-system cmake)
   #:use-module (guix build-system trivial))
@@ -567,3 +569,49 @@ through the EFX extension.  It also facilitates streaming audio, multi-channel
 buffers, and audio capture.")
     (home-page "http://kcat.strangesoft.net/openal.html")
     (license lgpl2.0+)))
+
+(define-public irrlicht
+  (package
+    (name "irrlicht")
+    (version "1.8.1")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "mirror://sourceforge/irrlicht/Irrlicht%20SDK/"
+                    (string-join (take (string-split version #\.) 2) ".")
+                    "/" version "/irrlicht-" version ".zip"))
+              (sha256
+               (base32
+                "0yz9lvsc8aqk8wj4rnpanxrw90gqpwn9w5hxp94r8hnm2q0vjjw1"))))
+    (build-system gnu-build-system)
+    (arguments
+     '(#:phases (alist-cons-after
+                 'unpack 'fix-build-env
+                 (lambda* (#:key outputs #:allow-other-keys)
+                   (let ((out (assoc-ref outputs "out")))
+                     (substitute* "Makefile"
+                       (("INSTALL_DIR = /usr/local/lib")
+                        (string-append "INSTALL_DIR = " out "/lib")))
+                     ;; The Makefile assumes these directories exist.
+                     (mkdir-p (string-append out "/lib"))
+                     (mkdir-p (string-append out "/include"))))
+                 (alist-replace
+                  'unpack
+                  (lambda* (#:key source #:allow-other-keys)
+                    (and (zero? (system* "unzip" source))
+                         ;; The actual source is buried a few directories deep.
+                         (chdir "irrlicht-1.8.1/source/Irrlicht/")))
+                  ;; No configure script
+                  (alist-delete 'configure %standard-phases)))
+       #:tests? #f ; no check target
+       #:make-flags '("CC=gcc" "sharedlib")))
+    (native-inputs
+     `(("unzip" ,unzip)))
+    (inputs
+     `(("mesa" ,mesa)))
+    (synopsis "3D game engine")
+    (description
+     "The Irrlicht Engine is a high performance realtime 3D engine written in
+C++.")
+    (home-page "http://irrlicht.sourceforge.net/")
+    (license zlib)))
-- 
2.1.1