1 files changed, 29 insertions, 0 deletions
diff --git a/structs/star.go b/structs/star.go
new file mode 100644
index 0000000..72afc00
--- /dev/null
+++ b/structs/star.go
@@ -0,0 +1,29 @@
+package structs
+
+import "C"
+
+type Star2D struct {
+	C Vec2    // coordinates of the star
+	V Vec2    // velocity    of the star
+	M float64 // mass        of the star
+}
+
+func (s *Star2D) Copy() Star2D {
+	return Star2D{s.C.Copy(), s.V.Copy(), s.M}
+}
+
+// accelerate the star with the acceleration a for the time t
+func (s *Star2D) AccelerateVelocity(a Vec2, t float64) {
+	s.V = s.V.Add(a.Multiply(t))
+}
+
+// move the star with it's velocity for the time t
+func (s *Star2D) Move(t float64) {
+	s.C = s.C.Add(s.V.Multiply(t))
+}
+
+// accelerate and move the star with it's velocity and the acceleration a for the time t
+func (s *Star2D) Accelerate(a Vec2, t float64) {
+	s.AccelerateVelocity(a, t)
+	s.Move(t)
+}