Backported required changes from Launcher branch

CI/linux/before_install.sh

@@ -5,7 +5,7 @@ sudo apt-get update
 # Dependencies
 sudo apt-get install libboost-all-dev
 sudo apt-get install libsdl2-dev libsdl2-image-dev libsdl2-mixer-dev libsdl2-ttf-dev
-sudo apt-get install qtbase5-dev
+sudo apt-get install qtbase5-dev 
 sudo apt-get install ninja-build zlib1g-dev libavformat-dev libswscale-dev libtbb-dev libluajit-5.1-dev
 # Optional dependencies
-sudo apt-get install libminizip-dev libfuzzylite-dev
+sudo apt-get install libminizip-dev libfuzzylite-dev qttools5-dev

CI/mxe/before_install.sh

@@ -1,12 +1,21 @@
 #!/bin/sh
 
+# steps to upgrade MXE dependencies:
+# 1) Use Debian/Ubuntu system or install one (virtual machines will work too)
+# 2) update following script to include any new dependencies 
+# You can also run it to upgrade existing ones, but don't expect much
+# MXE repository only provides ancient versions for the sake of "stability"
+# https://github.com/vcmi/vcmi-deps-mxe/blob/master/mirror-mxe.sh
+# 3) make release in vcmi-deps-mxe repository using resulting tar archive
+# 4) update paths to tar archive in this script
+
 # Install nsis for installer creation
 sudo add-apt-repository 'deb http://security.ubuntu.com/ubuntu bionic-security main'
 sudo apt-get install -qq nsis ninja-build libssl1.0.0
 
 # MXE repository was too slow for Travis far too often
-wget -nv https://github.com/vcmi/vcmi-deps-mxe/releases/download/2021-02-20/mxe-i686-w64-mingw32.shared-2021-01-22.tar
+wget -nv https://github.com/vcmi/vcmi-deps-mxe/releases/download/2022-12-26/mxe-i686-w64-mingw32.shared-2022-12-26.tar
-tar -xvf mxe-i686-w64-mingw32.shared-2021-01-22.tar
+tar -xvf mxe-i686-w64-mingw32.shared-2022-12-26.tar
 sudo dpkg -i mxe-*.deb
 sudo apt-get install -f --yes
 

CMakeLists.txt

@@ -48,7 +48,9 @@ option(ENABLE_ERM "Enable compilation of ERM scripting module" OFF)
 option(ENABLE_LUA "Enable compilation of LUA scripting module" OFF)
 option(ENABLE_LAUNCHER "Enable compilation of launcher" ON)
 option(ENABLE_EDITOR "Enable compilation of map editor" ON)
+option(ENABLE_TRANSLATIONS "Enable generation of translations for launcher and editor" ON)
 option(ENABLE_NULLKILLER_AI "Enable compilation of Nullkiller AI library" ON)
+
 if(APPLE_IOS)
 	set(BUNDLE_IDENTIFIER_PREFIX "" CACHE STRING "Bundle identifier prefix")
 	set(APP_DISPLAY_NAME "VCMI" CACHE STRING "App name on the home screen")
@@ -327,8 +329,17 @@ endif()
 
 if(ENABLE_LAUNCHER OR ENABLE_EDITOR)
 	# Widgets finds its own dependencies (QtGui and QtCore).
-	find_package(QT NAMES Qt6 Qt5 REQUIRED COMPONENTS Widgets Network)
+	find_package(QT NAMES Qt6 Qt5 REQUIRED COMPONENTS Widgets Network )
-	find_package(Qt${QT_VERSION_MAJOR} REQUIRED COMPONENTS Widgets Network)
+	find_package(Qt${QT_VERSION_MAJOR} REQUIRED COMPONENTS Widgets Network )
+
+	find_package(QT NAMES Qt6 Qt5 COMPONENTS LinguistTools )
+	find_package(Qt${QT_VERSION_MAJOR} COMPONENTS LinguistTools)
+	if (NOT Qt5LinguistTools_DIR)
+		set(ENABLE_TRANSLATIONS OFF)
+	endif()
+	if (ENABLE_TRANSLATIONS)
+		add_definitions(-DENABLE_QT_TRANSLATIONS)
+	endif()
 endif()
 
 if(ENABLE_NULLKILLER_AI)

config/schemas/settings.json

@@ -17,7 +17,7 @@
 			"type" : "object",
 			"default": {},
 			"additionalProperties" : false,
-			"required" : [ "playerName", "showfps", "music", "sound", "encoding", "swipe", "saveRandomMaps", "saveFrequency", "notifications", "extraDump" ],
+			"required" : [ "playerName", "showfps", "music", "sound", "encoding", "language", "swipe", "saveRandomMaps", "saveFrequency", "notifications", "extraDump" ],
 			"properties" : {
 				"playerName" : {
 					"type":"string",
@@ -51,6 +51,10 @@
 					"type":"string",
 					"default" : "Maps/Arrogance"
 				},
+				"language" : {
+					"type":"string",
+					"default" : "english"
+				},
 				"lastSave" : {
 					"type":"string",
 					"default" : "NEWGAME"