Gooey: fix logic for selected orbit window

src/gooey.cpp

@@ -19,7 +19,7 @@ const int H_FLAGS = ImGuiTreeNodeFlags_DefaultOpen;
 
 void drawSimulationWindow(bool& running, u64 sim_time_ms, float& sim_speed);
 void drawMemoryWindow(MemoryArena* game_arena, RenderState* rs);
-void drawOrbitWindow(GameState* gs);
+void drawOrbitSelectionWindow(GameState* gs);
 void drawEllipseParameters(EllipseParameters& ep);
 void drawGravitationalBody(GravBody& body);
 void drawOrbitalElements(OrbitalElements& el);
@@ -79,21 +79,23 @@ gooDraw(SDL_Window* window, GameState* gs, RenderState* rs)
 	drawMemoryWindow(gs->arena, rs);
 	Separator();
 
-	// FIXME: split up orbit window into function calls here
-	drawOrbitWindow(gs);
+	drawOrbitSelectionWindow(gs);
+	GameOrbit* orbit = getSelectedOrbit(gs);
+
+	if (orbit) {
+		TwoBodySystem& sys = orbit->system;
+		BeginChild("orbit details", ImVec2(G_WIDTH - 20, 450), true);
+		drawSystemWindow(sys);
+		Separator();
+		drawSatelliteWindow(sys.sat);
+		Separator();
+		drawOrbitalElements(sys.elements);
+		EndChild();
+	}
 
 	BeginChild("impulsive maneuver", ImVec2(G_WIDTH - 20, 125), true);
 	drawManeuverWindow(gs);
 	EndChild();
-#if 0
-	assert(gs->orbits[0].in_use);
-	TwoBodySystem& sys = gs->orbits[0].system;
-	drawSystemWindow(sys);
-	drawSatelliteWindow(sys.sat);
-	drawGravitationalBody(sys.body);
-	drawOrbitalElements(sys.elements);
-	drawEllipseParameters(sys.ep);
-#endif
 
 	End();
 	Render();
@@ -154,47 +156,26 @@ void drawMemoryWindow(MemoryArena* game_arena, RenderState* rs)
 	EndChild();
 }
 
-void drawOrbitWindow(GameState* gs)
+void drawOrbitSelectionWindow(GameState* gs)
 {
 	Text("Orbit Selection");
 
 	BeginChild("orbit selection", ImVec2(G_WIDTH - 20, 55), true);
-	static u32 selected = UINT_MAX;
 
 	for (u32 i = 0; i < gs->num_orbits; i++) {
 		GameOrbit& orbit = gs->orbits[i];
 
 		if (orbit.in_use) {
-			static const u32 label_len = 128;
-			char label[label_len];
+			const u32 label_len = 32;
+			static char label[label_len];
 			snprintf(label, label_len, "Orbit %d", i);
 
-			if (Selectable(label, selected == i)) {
-				selected = i;
+			if (Selectable(label, orbit.selected))
 				selectOrbit(gs, &orbit);
-			}
 		}
 	}
 
 	EndChild();
-
-	if (selected < gs->num_orbits
-		&& gs->orbits[selected].in_use)
-	{
-		TwoBodySystem& sys = gs->orbits[selected].system;
-		BeginChild("orbit details", ImVec2(G_WIDTH - 20, 450), true);
-		Text("Selected Orbit#: %d", selected);
-		//Text("Orbital Period:  %.2fs", sys.orbital_period);
-		drawSystemWindow(sys);
-		Separator();
-		//drawGravitationalBody(sys.body);
-		//Separator();
-		drawSatelliteWindow(sys.sat);
-		Separator();
-		drawOrbitalElements(sys.elements);
-		EndChild();
-	}
-
 }
 
 void drawEllipseParameters(EllipseParameters& ep)