seperate orbit logic from body

1 files changed, 29 insertions, 0 deletions

diff --git a/src/solar_system/orbit.rs b/src/solar_system/orbit.rs
new file mode 100644
index 0000000..fe55e4f
--- /dev/null
+++ b/src/solar_system/orbit.rs
@@ -0,0 +1,29 @@
+use crate::solar_system::{Angle, BodyId, Kilometers, OrbitalBody, Percentage};
+use crate::timeman::{Second};
+
+pub struct StaticOrbit
+{
+    pub parent: Option<BodyId>,
+    pub eccentricity: Percentage,
+    pub inclination: Angle,
+    pub long_asc_node: Angle,
+    pub long_periapsis: Angle,
+    pub mean_long: Angle,
+
+    pub semi_major_axis: Kilometers,
+}
+
+impl StaticOrbit
+{
+    pub fn period(
+        &self,
+        this_body: &OrbitalBody)
+        -> Second
+    {
+        ((self.semi_major_axis.powf(3.0) / this_body.sgp).sqrt() * std::f64::consts::TAU) as u64 
+    }
+
+    pub fn parent(&self) -> Option<BodyId> {
+        self.parent
+    }
+}