private void UpdatePointMassParameters(PointMass o, float dt)
{
PointMassData data = o.PointMassData;
if (data.Mass != 0)
{
data.Acceleration = data.Forces / data.Mass;
}
else
{
data.Acceleration = new MyVector(0, 0, 0);
}
data.Velocity.Add(data.Acceleration * dt);
data.VelocityBody = data.Velocity;
data.VelocityBody.Rotate(~data.Orientation);
data.Forces = new MyVector(0, 0, 0);
o.PointMassData = data;
}
private void CalculatePointMassForces(PointMass o)
{
PointMassData data = o.PointMassData;
//data.Forces = new MyVector(0, 0, 0);
if (doGravity)
data.Forces = o.Mass * gravity;
if (doLinearDrag)
{
data.Forces -= data.Velocity * air_density * (data.Velocity.Length * o.LinearDragCoefficient *
o.BoundingSphereRadius * o.BoundingSphereRadius);
}
o.PointMassData = data;
}
