Optional reconnect functionality

Enable the server to request the client to reconnect.

This can be done with the now extended minetest.request_shutdown([reason], [reconnect]) setting.

src/script/cpp_api/s_mainmenu.cpp

@@ -21,15 +21,21 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "cpp_api/s_internal.h"
 #include "common/c_converter.h"
 
-void ScriptApiMainMenu::setMainMenuErrorMessage(std::string errormessage)
+void ScriptApiMainMenu::setMainMenuData(MainMenuDataForScript *data)
 {
 	SCRIPTAPI_PRECHECKHEADER
 
 	lua_getglobal(L, "gamedata");
 	int gamedata_idx = lua_gettop(L);
 	lua_pushstring(L, "errormessage");
-	lua_pushstring(L, errormessage.c_str());
+	if (!data->errormessage.empty()) {
+		lua_pushstring(L, data->errormessage.c_str());
+	} else {
+		lua_pushnil(L);
+	}
 	lua_settable(L, gamedata_idx);
+	setboolfield(L, gamedata_idx, "reconnect_requested",
+		data->reconnect_requested);
 	lua_pop(L, 1);
 }
 

src/script/cpp_api/s_mainmenu.h

@@ -22,16 +22,15 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #include "cpp_api/s_base.h"
 #include "util/string.h"
+#include "../guiMainMenu.h"
 
-class ScriptApiMainMenu
-		: virtual public ScriptApiBase
-{
+class ScriptApiMainMenu : virtual public ScriptApiBase {
 public:
 	/**
-	 * set gamedata.errormessage to inform lua of an error
-	 * @param errormessage the error message
+	 * Hand over MainMenuDataForScript to lua to inform lua of the content
+	 * @param data the data
 	 */
-	void setMainMenuErrorMessage(std::string errormessage);
+	void setMainMenuData(MainMenuDataForScript *data);
 
 	/**
 	 * process events received from formspec

src/script/lua_api/l_mainmenu.cpp

@@ -114,15 +114,19 @@ int ModApiMainMenu::l_start(lua_State *L)
 
 	bool valid = false;
 
+	MainMenuData *data = engine->m_data;
 
-	engine->m_data->selected_world		= getIntegerData(L, "selected_world",valid) -1;
-	engine->m_data->simple_singleplayer_mode = getBoolData(L,"singleplayer",valid);
-	engine->m_data->name				= getTextData(L,"playername");
-	engine->m_data->password			= getTextData(L,"password");
-	engine->m_data->address				= getTextData(L,"address");
-	engine->m_data->port				= getTextData(L,"port");
-	engine->m_data->serverdescription	= getTextData(L,"serverdescription");
-	engine->m_data->servername			= getTextData(L,"servername");
+	data->selected_world = getIntegerData(L, "selected_world",valid) -1;
+	data->simple_singleplayer_mode = getBoolData(L,"singleplayer",valid);
+	data->do_reconnect = getBoolData(L, "do_reconnect", valid);
+	if (!data->do_reconnect) {
+		data->name     = getTextData(L,"playername");
+		data->password = getTextData(L,"password");
+		data->address  = getTextData(L,"address");
+		data->port     = getTextData(L,"port");
+	}
+	data->serverdescription = getTextData(L,"serverdescription");
+	data->servername        = getTextData(L,"servername");
 
 	//close menu next time
 	engine->m_startgame = true;

src/script/lua_api/l_server.cpp

@@ -30,7 +30,9 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 // request_shutdown()
 int ModApiServer::l_request_shutdown(lua_State *L)
 {
-	getServer(L)->requestShutdown();
+	const char *msg = lua_tolstring(L, 1, NULL);
+	bool reconnect = lua_toboolean(L, 2);
+	getServer(L)->requestShutdown(msg ? msg : "", reconnect);
 	return 0;
 }
 

src/script/lua_api/l_server.h

@@ -24,7 +24,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 class ModApiServer : public ModApiBase {
 private:
-	// request_shutdown()
+	// request_shutdown([message], [reconnect])
 	static int l_request_shutdown(lua_State *L);
 
 	// get_server_status()