we did it uhyou cho raki daze

PoC/PoC/mainobserver.cpp

@@ -56,6 +56,7 @@ namespace flatland {
 		double propertime;
 		double currentvelocity;
 		int currentproperacceleration;
+		char name;
 		
 
 		auto changestate(double maintime) -> void
@@ -88,10 +89,46 @@ namespace flatland {
 
 					if (std::get<0>(objectstate) == INERTIAL)
 					{
-						auto lightconeeq = std::vector<double>{ 1.0, mainobserver->currenttime - std::get<1>(mainobserver->objectlist[0]) };
+						auto lightconeeq1 = std::vector<double>{ LIGHTSPEED, mainobserver->currenttime - std::get<1>(mainobserver->objectlist[0]) };
+						auto lightconeeq2 = std::vector<double>{ -LIGHTSPEED, mainobserver->currenttime - std::get<1>(mainobserver->objectlist[0]) };
+						auto worldlineeq = std::vector<double>{ mainrelativevelocity, mainclocktimeatstatechange - maincoordinatelocationatstatechange};
+
+						auto intersection1 = std::vector<double>{
+							(lightconeeq1[0] * worldlineeq[1] - worldlineeq[0] * lightconeeq1[1]) / (lightconeeq1[0] - worldlineeq[0]),
+							(worldlineeq[1] - lightconeeq1[1])/(lightconeeq1[0]-worldlineeq[0]),
+						};
+						auto intersection2 = std::vector<double>{
+							(lightconeeq2[0] * worldlineeq[1] - worldlineeq[0] * lightconeeq2[1]) / (lightconeeq2[0] - worldlineeq[0]),
+							(worldlineeq[1] - lightconeeq2[1]) / (lightconeeq2[0] - worldlineeq[0]),
+						};
+
+						if (mainclocktimeatstatechange < intersection1[0] && intersection1[0] < mainobserver->currenttime)
+						{
+							intersection1 = std::vector<double>{intersection1[0] - mainobserver->currenttime, intersection1[1] - std::get<1>(mainobserver->objectlist[0]) };
+							intersection1 = LORENTZ_BOOST(-currentvelocity)*intersection1;
+
+							if (-40.0 < intersection1[1] && intersection1[1] < 40.0)
+							{
+								pastlightcone[(int)round(intersection1[1])] = name;
+							}
+						}
+						if (mainclocktimeatstatechange < intersection2[0] && intersection2[0] < mainobserver->currenttime)
+						{
+							intersection2 = std::vector<double>{ intersection2[0] - mainobserver->currenttime, intersection2[1] - std::get<1>(mainobserver->objectlist[0]) };
+							intersection2 = LORENTZ_BOOST(-currentvelocity)*intersection2;
+
+							if (-40.0 < intersection2[1] && intersection2[1] < 40.0)
+							{
+								pastlightcone[(int)round(intersection2[1])] = name;
+							}
+						}
 					}
 					else
 					{
+						auto lightconeeq1 = std::vector<double>{ LIGHTSPEED, mainobserver->currenttime - std::get<1>(mainobserver->objectlist[0]) };
+						auto lightconeeq2 = std::vector<double>{ -LIGHTSPEED, mainobserver->currenttime - std::get<1>(mainobserver->objectlist[0]) };
+
+
 
 					}
 				}