public bool IsColliding(Planet planet1, Planet planet2, out Vector2 distanceVector)
{
distanceVector = Measurements.GetDistanceVector(planet1, planet2);
float distance = distanceVector.Length();
Vector2 coveredDistance = planet2.DirectionNextFrame - planet1.DirectionNextFrame;
float skalar = Vector2.Dot(coveredDistance, distanceVector);
float movementDistance = skalar / distance;
float totalDistance = distance + movementDistance;
return(planet1.Radius + planet2.Radius >= totalDistance);
}
public void CalculateGravity(Planet planet1, Planet planet2, GameTime gameTime)
{
Vector2 distanceVector = Measurements.GetDistanceVector(planet1, planet2);
float distanceSqared = distanceVector.LengthSquared();
if (distanceSqared == 0)
return;
float acceleration = GravityConstantKilometerTonns * GameGlobals.SimulationSpeedMuliplicator / distanceSqared * (float)gameTime.ElapsedGameTime.TotalSeconds;
distanceVector.Normalize();
distanceVector *= acceleration;
planet1.Direction += distanceVector * planet2.Mass;
planet2.Direction -= distanceVector * planet1.Mass;
}
