Changed LineKind to int, for assignability, now reading new lines :D

src/app.h

@@ -29,11 +29,13 @@ using beat_type = Beat<note_info>;
 struct AbstractLine {
 	math::Vec2 starting_point;
 	math::Vec2 end_point;
-	LineKind line_kind;
+	int line_kind;
 
 	const float hsize = 5.0f;
 	
-	AbstractLine(math::Vec2 starting_point, math::Vec2 end_point, LineKind line_kind)
+	AbstractLine() = default;
+
+	AbstractLine(math::Vec2 starting_point, math::Vec2 end_point, int line_kind)
 	: starting_point(starting_point)
 	, end_point(end_point)
 	, line_kind(line_kind)
@@ -43,24 +45,32 @@ struct AbstractLine {
 	std::vector<line_type> calculate_lines() const {
 		auto dir = normalize(end_point - starting_point);
 		auto normal = rotate_ccw(dir);
+		LineKind lk = static_cast<LineKind>(line_kind);
 		
 		if(line_kind == simulation::kOneWay){
 			std::vector<line_type> ret;
-			ret.emplace_back(starting_point + hsize*normal, end_point + hsize*normal, line_kind);
+			ret.emplace_back(starting_point + hsize*normal, end_point + hsize*normal, lk);
-			ret.emplace_back(end_point + hsize*normal, end_point + hsize*dir, line_kind);
+			ret.emplace_back(end_point + hsize*normal, end_point + hsize*dir, lk);
-			ret.emplace_back(end_point + hsize*dir, end_point - hsize*normal, line_kind);
+			ret.emplace_back(end_point + hsize*dir, end_point - hsize*normal, lk);
-			ret.emplace_back(end_point - hsize*normal, starting_point - hsize*normal, line_kind);
+			ret.emplace_back(end_point - hsize*normal, starting_point - hsize*normal, lk);
-			ret.emplace_back(starting_point - hsize*normal, starting_point - hsize*dir, line_kind);
+			ret.emplace_back(starting_point - hsize*normal, starting_point - hsize*dir, lk);
-			ret.emplace_back(starting_point - hsize*dir, starting_point + hsize*normal, line_kind);
+			ret.emplace_back(starting_point - hsize*dir, starting_point + hsize*normal, lk);
 			return ret;
 		} else {
 			std::vector<line_type> ret;
-			ret.emplace_back(starting_point, end_point, line_kind);
+			ret.emplace_back(starting_point, end_point, lk);
 			return ret;
 		}
 	}
 };
 
+BOOST_FUSION_ADAPT_STRUCT(
+	AbstractLine,
+	(::math::Vec2, starting_point)
+	(::math::Vec2, end_point)
+	(int, line_kind)
+)
+
 struct libwebsocket;
 struct App{
 	std::vector<User*> people_online;
@@ -77,6 +87,10 @@ struct App{
 		beat.notes.emplace_back(note_type::kQuarterNote, note_info{100.0f, 100.0f});
 
 		AbstractLine line(Vec2{50.0f, 100.0f}, Vec2{150.0f, 200.0f}, simulation::kOneWay);
+		add_line(line);
+	}
+
+	void add_line(AbstractLine const & line){
 		for(auto & l : line.calculate_lines()){
 			sim.lines.push_back(l);
 		}

src/main.cpp

@@ -36,7 +36,13 @@ websockets::TestProtocol<User> default_protocol{
 	// receive
 	[](User& user, std::string in, basic_websocket_info){
 		try{
-			user = from_json<IncomingPacket>(parse_json(in));
+			auto object = parse_json(in).getObject();
+			auto command = object["command"];
+			if(command == "add line"){
+				app->add_line(from_json<AbstractLine>(object["data"]));
+			} else if (command == "update user") {
+				user = from_json<IncomingPacket>(object["data"]);
+			}
 		} catch(std::exception& e) {
 			throw websockets::runtime_error(e.what());
 		}