public void SetUpBody(GenerationSettings.PlanetSettings planetSettings, bool setPositions = true, CelestialBody newOrbitalParent = null)
{
// this is called when a celestial body is wanted to be set up as a planet
GenericSetup(planetSettings);
drawPath = planetSettings.drawPath;
pathLength = planetSettings.pathLength;
if (setPositions)
{
// place the planet away from the star
Vector3 direction = new Vector3(Mathf.Cos(planetSettings.offsetAngle * Mathf.Deg2Rad), 0, Mathf.Sin(planetSettings.offsetAngle * Mathf.Deg2Rad));
transform.position = newOrbitalParent.transform.position + (direction * planetSettings.distance);
}
// set up the initial velocity
// so that the planet will fall into a stable orbit around its parent
// we do this even if we don't want to reset the position to calculate the effect
// of any changes to the orbit eccentricity
if (newOrbitalParent != null)
{
initialVelocity = planetSettings.eccentricity * CalculateInitialVelocity(newOrbitalParent.transform);
orbitalParent = newOrbitalParent;
orbitalParentMass = orbitalParent.GetComponent <CelestialBody>().mass;
}
}
void CreatePlanet(GenerationSettings.PlanetSettings planetSettings)
{
// create a new planet gameobject
// make it a child of the solar system
GameObject newPlanet = new GameObject
{
name = "Planet " + transform.childCount.ToString()
};
newPlanet.transform.parent = transform;
// add components to the planet
CelestialBody cbComponent = newPlanet.AddComponent <CelestialBody>();
// assign the values to the planet from the settings
cbComponent.SetUpBody(planetSettings, true, star);
// then register it as a celestial body
celestialBodies.Add(cbComponent);
}
