add and implement next_scenario_append

src/game_end_exceptions.cpp

@@ -34,6 +34,7 @@ end_level_data::end_level_data()
 	, carryover_add(false)
 	, transient()
 	, next_scenario_settings()
+	, next_scenario_append()
 {
 }
 
@@ -47,6 +48,10 @@ void end_level_data::write(config& cfg) const
 	if (!next_scenario_settings.empty()) {
 		cfg.add_child("next_scenario_settings", next_scenario_settings);
 	}
+	if (!next_scenario_append.empty()) {
+		cfg.add_child("next_scenario_append", next_scenario_append);
+	}
+
 }
 
 void end_level_data::read(const config& cfg)
@@ -60,4 +65,9 @@ void end_level_data::read(const config& cfg)
 	if (!next_scenario_settings_cfg.empty()) {
 		next_scenario_settings = next_scenario_settings_cfg;
 	}
+	const config & next_scenario_append_cfg = cfg.child_or_empty("next_scenario_append");
+	if (!next_scenario_append_cfg.empty()) {
+		next_scenario_append = next_scenario_append_cfg;
+	}
+
 }

src/game_end_exceptions.hpp

@@ -109,6 +109,7 @@ struct end_level_data
 	transient_end_level transient;
 
 	config next_scenario_settings;
+	config next_scenario_append;
 
 	void write(config& cfg) const;
 

src/game_events/action_wml.cpp

@@ -730,6 +730,10 @@ WML_HANDLER_FUNCTION(endlevel, /*event_info*/, cfg)
 		if (!next_scenario_settings_cfg.empty()) {
 			data.next_scenario_settings = next_scenario_settings_cfg;
 		}
+		const config next_scenario_append_cfg = cfg.get_parsed_config().child_or_empty("next_scenario_append");
+		if (!next_scenario_append_cfg.empty()) {
+			data.next_scenario_append = next_scenario_append_cfg;
+		}
 	}
 
 	std::string end_of_campaign_text = cfg["end_text"];

src/playcampaign.cpp

@@ -80,6 +80,10 @@ static void do_carryover_WML(config & level, game_state& gamestate){
 		if(!end_level_.next_scenario_settings.empty()) {
 			level.merge_with(end_level_.next_scenario_settings);
 		}
+		if(!end_level_.next_scenario_append.empty())
+		{
+			level.append_children(end_level_.next_scenario_append);
+		}
 	}
 }
 
@@ -88,6 +92,7 @@ static void clear_carryover_WML (game_state & gamestate) {
 	if (gamestate.carryover_sides.has_child("end_level_data")) {
 		config & eld = gamestate.carryover_sides.child("end_level_data");
 		eld.clear_children("next_scenario_settings");
+		eld.clear_children("next_scenario_append");
 	}	
 }