Add ScummVM (tkashkin#52)

Former-commit-id: 187c708

README.md

@@ -21,6 +21,7 @@ GameHub supports non-native games as well as native games for Linux.
 It supports multiple [compatibility layers](https://github.com/tkashkin/GameHub/wiki/Compatibility-layers) for non-native games:
 * Wine / Proton
 * DOSBox
+* ScummVM
 * RetroArch
 
 It also allows to add custom emulators.

data/icons/icons.gresource.xml

@@ -15,6 +15,7 @@
 
 		<file alias="scalable/actions/tool-wine-symbolic.svg">symbolic/tools/wine.svg</file>
 		<file alias="scalable/actions/tool-dosbox-symbolic.svg">symbolic/tools/dosbox.svg</file>
+		<file alias="scalable/actions/tool-scummvm-symbolic.svg">symbolic/tools/scummvm.svg</file>
 
 		<file alias="scalable/actions/tag.svg">normal/tags/tag.svg</file>
 

po/POTFILES

@@ -24,6 +24,7 @@ src/data/compat/Innoextract.vala
 src/data/compat/Proton.vala
 src/data/compat/Wine.vala
 src/data/compat/DOSBox.vala
+src/data/compat/ScummVM.vala
 src/data/compat/RetroArch.vala
 src/data/compat/CustomEmulator.vala
 src/ui/windows/MainWindow.vala

src/app.vala

@@ -53,7 +53,7 @@ namespace GameHub
 
 			GameSources = { new Steam(), new GOG(), new Humble(), new Trove(), new User() };
 
-			CompatTool[] tools = { new Compat.CustomScript(), new Compat.CustomEmulator(), new Compat.Innoextract(), new Compat.DOSBox(), new Compat.RetroArch() };
+			CompatTool[] tools = { new Compat.CustomScript(), new Compat.CustomEmulator(), new Compat.Innoextract(), new Compat.DOSBox(), new Compat.ScummVM(), new Compat.RetroArch() };
 			foreach(var appid in Compat.Proton.APPIDS)
 			{
 				tools += new Compat.Proton(appid);

src/data/compat/ScummVM.vala

@@ -0,0 +1,77 @@
+/*
+This file is part of GameHub.
+Copyright (C) 2018 Anatoliy Kashkin
+
+GameHub 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.
+
+GameHub 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 GameHub.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+using Gee;
+
+using GameHub.Utils;
+
+namespace GameHub.Data.Compat
+{
+	public class ScummVM: CompatTool
+	{
+		private static string SCUMMVM_NO_GAMES_WARNING = "WARNING: ScummVM could not find any game";
+
+		public string binary { get; construct; default = "scummvm"; }
+
+		public ScummVM(string binary="scummvm")
+		{
+			Object(binary: binary);
+		}
+
+		construct
+		{
+			id = "scummvm";
+			name = "ScummVM";
+			icon = "tool-scummvm-symbolic";
+
+			executable = Utils.find_executable(binary);
+			installed = executable != null && executable.query_exists();
+		}
+
+		private bool scummvm_detect(File? dir)
+		{
+			if(dir != null && dir.query_exists())
+			{
+				var output = Utils.run({ executable.get_path(), "--detect" }, dir.get_path(), null, false, false);
+				return !(SCUMMVM_NO_GAMES_WARNING in output);
+			}
+			return false;
+		}
+
+		public override bool can_run(Runnable runnable)
+		{
+			return installed && runnable is Game && runnable.install_dir != null
+				&& (scummvm_detect(runnable.install_dir) || scummvm_detect(runnable.install_dir.get_child("data")));
+		}
+
+		public override async void run(Runnable runnable)
+		{
+			if(!can_run(runnable)) return;
+
+			var dir = runnable.install_dir;
+			var data_dir = runnable.install_dir.get_child("data");
+
+			if(!scummvm_detect(dir) && scummvm_detect(data_dir))
+			{
+				dir = data_dir;
+			}
+
+			yield Utils.run_thread({ executable.get_path(), "--auto-detect" }, dir.get_path());
+		}
+	}
+}

src/meson.build

@@ -60,6 +60,7 @@ sources = [
 	'data/compat/Proton.vala',
 	'data/compat/Wine.vala',
 	'data/compat/DOSBox.vala',
+	'data/compat/ScummVM.vala',
 	'data/compat/RetroArch.vala',
 	'data/compat/CustomEmulator.vala',