epm play unigine-valley: move unpacking to pack.d

pack.d/unigine-valley.sh

+#!/bin/sh
+
+TAR="$1"
+#VERSION="$2"
+RETURNTARNAME="$2"
+
+OPKGNAME="Unigine_Valley"
+
+. $(dirname $0)/common.sh
+
+# args: <run file> <output tar>
+convert_makeself_to_tar()
+{
+    offset=`head -n 403 "$1" | wc -c | tr -d " "`
+    dd if="$1" ibs=$offset skip=1 obs=1024 conv=sync | gzip -cd > "$2"
+}
+
+BASENAME="$(basename $(echo $OPKGNAME*.run | tr "[A-Z_]" "[a-z-]") .run)"
+
+convert_makeself_to_tar $TAR $BASENAME.tar
+
+return_tar $BASENAME.tar
+

play.d/unigine-valley.sh

 #!/bin/sh
 
 PKGNAME=unigine-valley
-OPKGNAME=Unigine_Valley
 SUPPORTEDARCHES="x86_64"
 DESCRIPTION="Unigine Valley 2013 (Unigine Benchmark) from the official site"
 
 . $(dirname $0)/common.sh
 
-convert_makeself_to_tar()
-{
-    offset=`head -n 403 "$1" | wc -c | tr -d " "`
-    dd if="$1" ibs=$offset skip=1 obs=1024 conv=sync | gzip -cd > "$(basename "$1" .run).tar"
-}
+cd_to_temp_dir
 
-PKGDIR=$(mktemp -d)
-trap "rm -fr $PKGDIR" EXIT
-
-cd $PKGDIR || fatal
 # https://assets.unigine.com/d/Unigine_valley-4.0.run
-epm tool eget --latest https://benchmark.unigine.com/valley "$OPKGNAME*.run"
-
-mv $OPKGNAME*.run $(echo $OPKGNAME*.run | tr "[A-Z_]" "[a-z-]")
-
-convert_makeself_to_tar $PKGNAME*.run
+epm tool eget --latest https://benchmark.unigine.com/valley "Unigine_Valley*.run"
 
-epm install $PKGNAME*.tar
+epm pack --install $PKGNAME *.run