do you know SR?

PoC/PoC/mainobserver.cpp

@@ -14,19 +14,21 @@ namespace flatland {
 	class Flatlandobject
 	{
 
-		Flatlandobject(std::vector<int> theparts, std::tuple<State, double, int> initialstate, Mainworldobserver* thegame)
+		Flatlandobject(std::vector<int> theparts, std::tuple<State, double, double, int, int, int> initialstate, Mainworldobserver* thegame)
 		{
 			parts = theparts;
 			objecthistory.push_back(initialstate);
-			thegame->objectlist.push_back(std::make_tuple(*this, std::get<2>(initialstate)));
+			thegame->objectlist.push_back(std::make_tuple(*this, std::get<3>(initialstate)));
 		}
 
 	public:
 		std::vector<int> parts = {};
-		std::vector<std::tuple<State, double, int>> objecthistory = {};
+		std::vector<std::tuple<State, double, double, int, int, int>> objecthistory = {}; 
+		// state, time(in main observer clock) at statechange, proper time clock at state change, location(in main observer coordinates) at state change,
+		// velocity(if inertial) relative to mainobserver, proper acceleration(if accelerating) 
 		double propertime;
-		int velocity;
-		int properacceleration;
+		int currentvelocity;
+		int currentproperacceleration;
 		
 
 		auto getcenterofmass() -> int
@@ -41,6 +43,11 @@ namespace flatland {
 
 	};
 
+	class Player : public Flatlandobject
+	{
+
+	};
+
 	class Mainworldobserver
 	{
 	public:
@@ -59,11 +66,12 @@ namespace flatland {
 		this->currenttime += tick;
 		for (std::tuple<Flatlandobject, int> a: this->objectlist)
 		{
-			std::get<0>(a).changestate(this->currenttime);
-
-			if (std::get<0>(std::get<0>(a).objecthistory.back()) == INERTIAL)
+			auto theobject = std::get<0>(a);
+			theobject.changestate(this->currenttime);
+			auto objectstate = theobject.objecthistory.back();
+			if (std::get<0>(objectstate) == INERTIAL)
 			{
-
+				auto newx = std::get<3>(objectstate) + ;
 			}
 			else
 			{