1 files changed, 27 insertions, 8 deletions
diff --git a/src/main.rs b/src/main.rs
index 12150ca..e0aa007 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -14,9 +14,25 @@ fn main() {
         .add_systems(Update, update_gravitational_forces)
         .run();
 }
+#[derive(Component)]
+struct LunarOrbitalData {
+    period: f32,
+}
 fn hello_system() {
     println!("hello");
 }
+fn lunar_period_to_vec(angular_pos: f32, radius: f32) -> Vec2 {
+    let x = radius * f32::cos(angular_pos);
+    let y = radius * f32::sin(angular_pos);
+    Vec2 { x, y }
+}
+fn handle_lunar_orbit(
+    time: Res<Time>,
+    mut lunar_query: Query<(&DestPlanet, &mut LunarOrbitalData, &mut Transform, &RigidBody), With<DestPlanet>>,
+) {
+    let (moon_planet, mut lod, mut moon_transform, moon_body) = lunar_query.single_mut();
+    let dt = time.delta_secs();
+}
 #[derive(Component)]
 struct Starship {
     name: String,
@@ -61,14 +77,16 @@ fn setup_stellar_body(mut cmd: Commands) {
         planet_mass_kg: 50.0,
         radius: 5.0,
     };
+    let lunar_radius = 900;
     let r = (&objective_planet).radius;
     let m = (&objective_planet).planet_mass_kg;
+    let initial_transform = lunar_period_to_vec(0., 100.);
     cmd.spawn((
         objective_planet,
+        LunarOrbitalData { period: 0. },
         RigidBody::Dynamic,
-        Transform::from_xyz(250.0, 0.0, 0.0),
+        Transform::from_xyz(initial_transform.x, initial_transform.y, 0.0),
         Sprite::from_color(Color::BLACK, Vec2 { x: 30., y: 30. }),
-        ExternalForce::new(Vec2 {x: 4000., y: -4000.}).with_persistence(false),
         Collider::circle(30.),
         Mass(m),
     ));
@@ -79,12 +97,13 @@ fn calculate_force_vector(
     pos_actor: Vec2,
     pos_incident: Vec2,
 ) -> Vec2 {
-    let GRAV_CONST = 2.0;
+    let GRAV_CONST = 100.0;
     (GRAV_CONST * mass_actor * mass_incident / (pos_actor.distance_squared(pos_incident)))
-    * Vec2 {
-        x: pos_actor.x - pos_incident.x,
-        y: pos_actor.y - pos_incident.y,
-    }
+        * Vec2 {
+            x: pos_actor.x - pos_incident.x,
+            y: pos_actor.y - pos_incident.y,
+        }
+        .normalize()
     /*Vec2 {
         x: pos_actor.x - pos_incident.x,
         y: pos_actor.y - pos_incident.y,
@@ -108,7 +127,7 @@ fn update_gravitational_forces<'b>(
 fn setup_starting_planet(mut cmd: Commands) {
     let start_planet = StartPlanet {
         display_name: String::from("Earth 2"),
-        planet_mass_kg: 5000.0,
+        planet_mass_kg: 15000.0,
         radius: 10.0,
     };
     let collider_radius = (&start_planet).radius;