From 4b201af742a15eb9953f1449195d47ee956976a8 Mon Sep 17 00:00:00 2001
From: cinnaboot <cinnaboot@protonmail.com>
Date: Wed, 21 Apr 2021 12:14:06 -0400
Subject: [PATCH] update satellite position when time_step is 0

---
 src/main.cpp | 21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

diff --git a/src/main.cpp b/src/main.cpp
index 74d1a10..df76f55 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -109,7 +109,8 @@ preFrameCallback(render_state* rs)
 	if (is.window_closed || is.escape)
 		rs->running = false;
 
-	updateSatellitePosition(rs->render_groups[0].entities[2]);
+	if (g_time_step > 0)
+		updateSatellitePosition(rs->render_groups[0].entities[2]);
 }
 
 void
@@ -118,6 +119,15 @@ postFrameCallback(render_state* rs)
 	static orbital_elements c_orb = {};
 	c_orb = g_orbit;
 	gooDraw(rs->handles->window, c_orb, g_time_step);
+	bool update_if_paused = false;
+
+	if (c_orb.nu != g_orbit.nu &&
+		((c_orb.nu >= 0 && c_orb.nu <= M_PI) ||
+		(c_orb.nu < 0 && c_orb.nu >= -1 * M_PI)))
+	{
+		g_orbit.nu = c_orb.nu;
+		update_if_paused = true;
+	}
 
 	// TODO: will need more validation from GUI as added
 	if (!ellipsesEqual(c_orb.ep, g_orbit.ep)) {
@@ -139,15 +149,12 @@ postFrameCallback(render_state* rs)
 			//	updating/constructing an orbit
 			g_orbit.epsilon = orbitGetSpecificEnergy(g_orbit.ep.a, g_orbit.mu);
 			g_orbit.h = orbitGetAngularMomentum(g_orbit.ep.p, g_orbit.mu);
+			update_if_paused = true;
 		}
 	}
 
-	if (c_orb.nu != g_orbit.nu &&
-		((c_orb.nu >= 0 && c_orb.nu <= M_PI) ||
-		(c_orb.nu < 0 && c_orb.nu >= -1 * M_PI)))
-	{
-		g_orbit.nu = c_orb.nu;
-	}
+	if (g_time_step == 0 && update_if_paused)
+		updateSatellitePosition(rs->render_groups[0].entities[2]);
 }
 
 int