gnu: Add knavalbattle.

* gnu/packages/games.scm (knavalbattle): New variable.

gnu/packages/games.scm

@@ -9320,3 +9320,45 @@ stay in game the higher will your score be.
 
 This package is part of the KDE games module.")
     (license (list license:gpl2+ license:fdl1.2+))))
+
+(define-public knavalbattle
+  (package
+    (name "knavalbattle")
+    (version "19.08.3")
+    (source
+     (origin
+      (method url-fetch)
+      (uri (string-append "mirror://kde/stable/applications/" version
+"/src/knavalbattle-" version ".tar.xz"))
+      (sha256
+       (base32 "0sdfjplqkb30x2mvh66pkzay6vn5px87779sh2s8lpl6fcw0v9g4"))))
+    (properties `((tags . ("Desktop" "KDE" "Games"))))
+    (build-system qt-build-system)
+    (native-inputs
+     `(("extra-cmake-modules" ,extra-cmake-modules)
+       ("kdoctools" ,kdoctools)))
+    (inputs
+     `(("kauth" ,kauth)
+       ("kcompletion" ,kcompletion)
+       ("kconfig" ,kconfig)
+       ("kconfigwidgets" ,kconfigwidgets)
+       ("kcoreaddons" ,kcoreaddons)
+       ("kcrash" ,kcrash)
+       ("kdbusaddons" ,kdbusaddons)
+       ("kdnssd" ,kdnssd)
+       ("ki18n" ,ki18n)
+       ("ktextwidgets" ,ktextwidgets)
+       ("kxmlgui" ,kxmlgui)
+       ("libkdegames" ,libkdegames)
+       ("qtbase" ,qtbase)
+       ("qtdeclarative" ,qtdeclarative)))
+    (home-page "https://games.kde.org/")
+    (synopsis "Battleship board game with built-in game server")
+    (description "KBattleship is a Battle Ship game for KDE.
+
+Ships are placed on a board which represents the sea.  Players try to hit each
+others ships in turns without knowing where they are placed.  The first player
+to destroy all ships wins the game.
+
+This package is part of the KDE games module.")
+    (license (list license:gpl2+ license:fdl1.2+))))