void ApplyCentripetalForce()
{
Vector2 offset = (Vector2)transform.position - center.GetGlobalCenter(); //the vector from the center of the planet to the player
//Quaternion rotationOfOffset = Quaternion.FromToRotation(Vector3.up, offset); //rotation of the offset vector from vertical
//Vector2 tangent = rotationOfOffset * Vector3.right; //the vector perpendicular to the offset vector in the xy plane
//Vector2 projVelocity = Vector3.Project(body.velocity, tangent); //the player's tangential velocity
Vector2 projVelocity = Radium.TangentVelocity(transform.position, body, center.GetGlobalCenter());
//print("Player velocity vector:" + projVelocity + " speed:" + projVelocity.magnitude);
if (projVelocity.magnitude > Mathf.Epsilon)
{
Vector2 force = -offset.normalized * Time.fixedDeltaTime * projVelocity.sqrMagnitude * body.mass / offset.magnitude;
body.AddForce(force, ForceMode2D.Impulse);
}
}
//takes the force that the player would like to exert (for movement) and limits it so the player doesn't go too fast
Vector2 SpeedLimitedForce(Vector2 rawForce)
{
Vector2 projVelocity = Radium.TangentVelocity(transform.position, body, center.GetGlobalCenter());
float dot = Vector2.Dot(rawForce, projVelocity);
if (dot < 0)
{
return(rawForce); //if your applied force is against the current velocity, you get full force
}
if (projVelocity.magnitude >= maxTangentialSpeed)
{
return(Vector2.zero); //if you are already going full speed, you get no force
}
//otherwise, you get enough force to get you up to full speed or full force, whichever is less
float maxAllowedForce = Mathf.Min(maxTangentialSpeed - projVelocity.magnitude, rawForce.magnitude);
return(rawForce.normalized * maxAllowedForce);
}