Add fallback font support for some languages.

README.txt

@@ -382,17 +382,31 @@ DejaVu Sans Mono:
   Fonts are (c) Bitstream (see below). DejaVu changes are in public domain.
   Glyphs imported from Arev fonts are (c) Tavmjong Bah (see below)
 
-  Bitstream Vera Fonts Copyright:
+Bitstream Vera Fonts Copyright:
 
   Copyright (c) 2003 by Bitstream, Inc. All Rights Reserved. Bitstream Vera is
   a trademark of Bitstream, Inc.
 
-  Arev Fonts Copyright:
+Arev Fonts Copyright:
 
   Copyright (c) 2006 by Tavmjong Bah. All Rights Reserved.
 
-  Liberation Fonts Copyright:
+Liberation Fonts Copyright:
 
   Copyright (c) 2007 Red Hat, Inc. All rights reserved. LIBERATION is a trademark of Red Hat, Inc.
 
+DroidSansFallback:
 
+  Copyright (C) 2008 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.

minetest.conf.example

@@ -191,6 +191,10 @@
 #mono_font_path = fonts/liberationmono.ttf
 #mono_font_size = 13
 
+# This font will be used for certain languages
+#fallback_font_path = fonts/DroidSansFallbackFull.ttf
+#fallback_font_size = 13
+
 #
 # Server stuff
 #
@@ -390,3 +394,7 @@
 
 # Makes DirectX work with LuaJIT. Disable if it causes troubles.
 #high_precision_fpu = true
+
+# Override language. When no value is provided (default) system language is used.
+# Check "locale" directory for the list of available translations.
+#language =

src/defaultsettings.cpp

@@ -147,6 +147,8 @@ void set_default_settings(Settings *settings)
 	settings->setDefault("font_size", "13");
 	settings->setDefault("mono_font_path", porting::getDataPath("fonts" DIR_DELIM "liberationmono.ttf"));
 	settings->setDefault("mono_font_size", "13");
+	settings->setDefault("fallback_font_path", porting::getDataPath("fonts" DIR_DELIM "DroidSansFallbackFull.ttf"));
+	settings->setDefault("fallback_font_size", "13");
 #else
 	settings->setDefault("freetype", "false");
 	settings->setDefault("font_path", porting::getDataPath("fonts" DIR_DELIM "fontlucida.png"));
@@ -281,6 +283,8 @@ void set_default_settings(Settings *settings)
 	settings->setDefault("modstore_details_url", "https://forum.minetest.net/mmdb/mod/*/");
 
 	settings->setDefault("high_precision_fpu", "true");
+
+	settings->setDefault("language", "");
 }
 
 void override_default_settings(Settings *settings, Settings *from)

src/main.cpp

@@ -996,6 +996,18 @@ int main(int argc, char *argv[])
 		run_tests();
 	}
 
+	std::string language = g_settings->get("language");
+	if (language.length()) {
+#ifndef _WIN32
+		setenv("LANGUAGE", language.c_str(), 1);
+#else
+		char *lang_str = (char*)calloc(10 + language.length(), sizeof(char));
+		strcat(lang_str, "LANGUAGE=");
+		strcat(lang_str, language.c_str());
+		putenv(lang_str);
+#endif
+	}
+
 	/*
 		Game parameters
 	*/
@@ -1396,7 +1408,11 @@ int main(int argc, char *argv[])
 	bool use_freetype = g_settings->getBool("freetype");
 	#if USE_FREETYPE
 	if (use_freetype) {
-		u16 font_size = g_settings->getU16("font_size");
+		std::string fallback;
+		if (is_yes(gettext("needs_fallback_font")))
+			fallback = "fallback_";
+		u16 font_size = g_settings->getU16(fallback + "font_size");
+		font_path = g_settings->get(fallback + "font_path");
 		font = gui::CGUITTFont::createTTFont(guienv, font_path.c_str(), font_size);
 	} else {
 		font = guienv->getFont(font_path.c_str());