/*
* Note: This may need to be modified so that the offset is calculated from the center of mass
* or 'collider.bounds.center'.
*/
void Impulse()
{
Vector2 offset = (Vector2)transform.position - center.GetGlobalCenter();
float reversalValue = reversed ? -1 : 1;
body.AddForce(-offset.normalized * reversalValue * gravity * Time.fixedDeltaTime * body.mass, ForceMode2D.Impulse);
}
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);
}
void FixRotation()
{
Vector2 offset = (Vector2)transform.position - center.GetGlobalCenter();
transform.rotation = Quaternion.LookRotation(Vector3.forward, offset);
}
//returns the vector from the center to the given node
Vector2 VectorToNode(Vector2 nodePosition)
{
return(nodePosition - center.GetGlobalCenter());
}
