private void Awake()
{
if (Instance == null)
{
Instance = this;
}
else
{
throw new Exception("[" + GetType().Name + "] Trying to instanciate a second instance");
}
base.Awake();
rigidbody.mass = mass;
}
// creation function that generates planets or gravity centers, only operates if one of the radio buttons is selected
private void PlanetScreen_MouseDown(object sender, MouseEventArgs e)
{
Graphics g = PlanetScreen.CreateGraphics(); ;
int w = Convert.ToInt32(Change_Radius.Value);
// create a gravity center
if (CenterOfGravity.Checked == true)
{
GravityCenter gravityCenter = new GravityCenter { };
gravityCenter.x = (e.X-5);
gravityCenter.y = (e.Y-5);
gravityCenter.radius = w;
gravityCenters.Add (gravityCenter); // adds the center of black circle to list of gravity centers
g.FillEllipse (Brushes.LightGray, e.X-w, e.Y-w, w*2, w*2); // Draws gray and black circles
g.FillEllipse(Brushes.Black, e.X-5, e.Y-5, 10, 10); // Since static no need to add them to time interval
}
// create a planet
if (CreateAPlanet.Checked == true)
{
Planet planet = new Planet { };
planet.x = e.X - 5;
planet.y = e.Y - 5;
foreach (GravityCenter gravity in gravityCenters)
{
if (gravity.x != planet.x || gravity.y != planet.y){ // if statement needed so program doesnt try to divide by zero and make the program crash
if (Math.Sqrt(Math.Pow((planet.x - gravity.x), 2) + Math.Pow((planet.y - gravity.y), 2)) < gravity.radius)
{
planet.nearest_X = gravity.x;
planet.nearest_Y = gravity.y;
planet.gravitationalRadius = Convert.ToInt32(Math.Sqrt(Math.Pow((planet.x - gravity.x), 2) + Math.Pow((planet.y - gravity.y), 2)));
if (planet.x < gravity.x)
planet.angle = (float)(Math.Atan((planet.y - gravity.y) / (planet.x - gravity.x)) - Math.PI); // exception needed if planets is clicked ontop of a gravity center
else
planet.angle = (float)Math.Atan((planet.y - gravity.y) / (planet.x - gravity.x));
planetList.Add(planet);
g.FillEllipse(Brushes.HotPink, planet.x, planet.y, 10, 10);
break;
}// if planet x,y within radius of gravity circle set gravity circle x,y to planet
planetList.Add(planet);
g.FillEllipse(Brushes.HotPink, planet.x, planet.y, 10, 10);
}
}
}
}
