Add Linux AppImage generation support

AppImage.cmake

@@ -0,0 +1,62 @@
+find_program(APPIMAGETOOL_PATH appimagetool OPTIONAL)
+
+if (NOT APPIMAGETOOL_PATH)
+	function(generate_appimage TARGET DESKTOP ICON)
+		message("appimagetool was not found. Skipping AppImage generation")
+	endfunction()
+else()
+	function(generate_appimage TARGET NAME DESKTOP ICON)
+		cmake_path(GET ICON FILENAME ICON_FILENAME)
+		cmake_path(GET DESKTOP FILENAME DESKTOP_FILENAME)
+		cmake_path(GET ICON STEM ICON_FILENAME_NOEXT)
+
+		add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/appdir/usr/bin/${NAME}
+			COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/appdir/usr/bin
+			COMMAND ${CMAKE_COMMAND} -E copy $<TARGET_FILE:${TARGET}> ${CMAKE_CURRENT_BINARY_DIR}/appdir/usr/bin/${NAME}
+			DEPENDS ${TARGET})
+
+		add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/appdir/usr/share/icons/hicolor/256x256/apps/${ICON_FILENAME}
+			COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/appdir/usr/share/icons/hicolor/256x256
+			COMMAND ${CMAKE_COMMAND} -E copy ${ICON} ${CMAKE_CURRENT_BINARY_DIR}/appdir/usr/share/icons/hicolor/256x256/apps/${ICON_FILENAME}
+			DEPENDS ${ICON})
+
+		configure_file(${DESKTOP} ${CMAKE_CURRENT_BINARY_DIR}/appdir/usr/share/applications/${DESKTOP_FILENAME})
+
+		add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/appdir/.DirIcon
+			COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/appdir
+			COMMAND ${CMAKE_COMMAND} -E copy usr/share/icons/hicolor/256x256/apps/${ICON_FILENAME} .DirIcon
+			WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/appdir
+			DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/appdir/usr/share/icons/hicolor/256x256/apps/${ICON_FILENAME})
+
+		add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/appdir/AppRun
+			COMMAND ${CMAKE_COMMAND} -E create_symlink usr/bin/${NAME} AppRun
+			WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/appdir
+			DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/appdir/usr/bin/${NAME})
+
+		add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/appdir/${ICON_FILENAME}
+			COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/appdir
+			COMMAND ${CMAKE_COMMAND} -E copy usr/share/icons/hicolor/256x256/apps/${ICON_FILENAME} ${ICON_FILENAME}
+			WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/appdir
+			DEPENDS ${ICON})
+
+		add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/appdir/${DESKTOP_FILENAME}
+			COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/appdir
+			COMMAND ${CMAKE_COMMAND} -E create_symlink usr/share/applications/${DESKTOP_FILENAME} ${DESKTOP_FILENAME}
+			WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/appdir
+			DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/appdir/usr/share/applications/${DESKTOP_FILENAME})
+
+		add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${TARGET}.AppImage
+			COMMAND ${APPIMAGETOOL_PATH} ${CMAKE_CURRENT_BINARY_DIR}/appdir ${CMAKE_CURRENT_BINARY_DIR}/${TARGET}.AppImage
+			DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/appdir/usr/bin/${NAME}
+			DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/appdir/usr/share/icons/hicolor/256x256/apps/${ICON_FILENAME}
+			DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/appdir/usr/share/applications/${DESKTOP_FILENAME}
+			DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/appdir/.DirIcon
+			DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/appdir/AppRun
+			DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/appdir/${ICON_FILENAME}
+			DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/appdir/${DESKTOP_FILENAME}
+		)
+
+		add_custom_target(${TARGET}_AppImage
+			DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${TARGET}.AppImage)
+	endfunction()
+endif()

CMakeLists.txt

@@ -32,6 +32,8 @@ elseif (UNIX)
     find_package(OpenSSL REQUIRED)
     target_link_libraries(${PROJECT_NAME} PRIVATE
             ZLIB::ZLIB OpenSSL::SSL OpenSSL::Crypto CURL::libcurl)
+	include(AppImage.cmake)
+	generate_appimage(${PROJECT_NAME} "beammp-launcher" ${CMAKE_CURRENT_SOURCE_DIR}/beammp-launcher.desktop ${CMAKE_CURRENT_SOURCE_DIR}/beammp.png)
 else(WIN32) #MINGW
     add_definitions("-D_WIN32_WINNT=0x0600")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Os -s --static")

beammp-launcher.desktop

@@ -0,0 +1,9 @@
+[Desktop Entry]
+Version=1.0
+Type=Application
+Name=BeamMP Launcher
+Icon=@ICON_FILENAME_NOEXT@
+TryExec=@NAME@
+Exec=@NAME@
+Categories=Game
+Terminal=true

src/Startup.cpp

@@ -183,6 +183,10 @@ void CheckName() {
     std::wstring DN = GetEN(), CDir = Utils::ToWString(options.executable_name), FN = CDir.substr(CDir.find_last_of('\\') + 1);
 #elif defined(__linux__)
     std::string DN = GetEN(), CDir = options.executable_name, FN = CDir.substr(CDir.find_last_of('/') + 1);
+	if (DN.find_last_of(".AppImage") != std::string::npos) { 
+		warn("Looks like launcher is an AppImage. Skipping name check");
+		return;
+	}
 #endif
     if (FN != DN) {
         if (fs::exists(DN))