Support game-specific minetest.conf

doc/lua_api.txt

@@ -57,6 +57,9 @@ eg.
 
 Common mods are loaded from the pseudo-game "common".
 
+The game directory can contain the file minetest.conf, which will be used
+to set default settings when running the particular game.
+
 Mod load path
 -------------
 Generic:

src/defaultsettings.cpp

@@ -243,3 +243,12 @@ void set_default_settings(Settings *settings)
 
 }
 
+void override_default_settings(Settings *settings, Settings *from)
+{
+	std::vector<std::string> names = from->getNames();
+	for(size_t i=0; i<names.size(); i++){
+		const std::string &name = names[i];
+		settings->setDefault(name, from->get(name));
+	}
+}
+

src/defaultsettings.h

@@ -23,6 +23,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 class Settings;
 
 void set_default_settings(Settings *settings);
+void override_default_settings(Settings *settings, Settings *from);
 
 #endif
 

src/server.cpp

@@ -58,6 +58,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "util/mathconstants.h"
 #include "rollback.h"
 #include "util/serialize.h"
+#include "defaultsettings.h"
 
 void * ServerThread::Thread()
 {
@@ -687,6 +688,13 @@ Server::Server(
 	infostream<<"- config: "<<m_path_config<<std::endl;
 	infostream<<"- game:   "<<m_gamespec.path<<std::endl;
 
+	// Initialize default settings and override defaults with those provided
+	// by the game
+	set_default_settings(g_settings);
+	Settings gamedefaults;
+	getGameMinetestConfig(gamespec.path, gamedefaults);
+	override_default_settings(g_settings, &gamedefaults);
+
 	// Create biome definition manager
 	m_biomedef = new BiomeDefManager(this);
 

src/subgame.cpp

@@ -24,6 +24,12 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "log.h"
 #include "util/string.h"
 
+bool getGameMinetestConfig(const std::string &game_path, Settings &conf)
+{
+	std::string conf_path = game_path + DIR_DELIM + "minetest.conf";
+	return conf.readConfigFile(conf_path.c_str());
+}
+
 bool getGameConfig(const std::string &game_path, Settings &conf)
 {
 	std::string conf_path = game_path + DIR_DELIM + "game.conf";

src/subgame.h

@@ -54,6 +54,9 @@ struct SubgameSpec
 	}
 };
 
+// minetest.conf
+bool getGameMinetestConfig(const std::string &game_path, Settings &conf);
+// game.conf
 bool getGameConfig(const std::string &game_path, Settings &conf);
 
 std::string getGameName(const std::string &game_path);