void Update()
{
float dtheta = Input.GetAxisRaw("Camera Horizontal");
float dy = Input.GetAxisRaw("Camera Vertical");
if (Input.GetButton("Run"))
{
cameraBehavior = runCamera;
// calculate the forward directions of the camera and what it's
// following, projected onto the xz-plane
var camForward = Vector3.ProjectOnPlane(
transform.rotation * Vector3.forward, Vector3.up
);
var followForward = Vector3.ProjectOnPlane(
following.rotation * Vector3.forward, Vector3.up
);
// calculate the angle between the two forward directions
// in order to tell the camera how to rotate toward the direction
// of the object it's following
dtheta = Vector3.Angle(camForward, followForward) / 180f;
var cross = Vector3.Cross(camForward, followForward);
if (dtheta < 0.1f)
{
dtheta = 0f;
}
else if (Vector3.Dot(cross, Vector3.up) < 0f)
{
dtheta = -dtheta;
}
}
else
{
cameraBehavior = walkCamera;
}
cameraBehavior.Update(this, dtheta, dy);
transform.position = following.position + this.DifferenceFromTarget();
transform.LookAt(following);
}
public virtual void Update(float elapsed)
{
_cameraBehavior.Update(elapsed);
}
public override void Update(float elapsed)
{
_cameraBehavior.Update(elapsed);
}