private void CreateSun()
{
GameObject sunGo = sphereGenerator.CreatePlanet(sunMaterial, Constants.k_SunSize);
sunGo.name = Constants.k_SunName;
// add sun light
GameObject lightGameObject = new GameObject("Sun Light");
Light lightComp = lightGameObject.AddComponent <Light>();
lightComp.color = Constants.k_WhiteColor;
lightComp.range = Constants.k_SunLightRange;
lightComp.intensity = Constants.k_SunLightIntencity;
lightGameObject.transform.parent = sunGo.transform;
lightGameObject.transform.position = Vector3.zero;
Sun sun = sunGo.AddComponent <Sun>();
this.sun = sun;
}
