diff options
| -rw-r--r-- | src/main.rs | 35 |
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; |