Unity camera problem - Moving FPS/TPS camera to look at a target and resuming player control - unity3d

Question

I am having trouble with aligning my player controlled camera (I use the same class for FPS and TPS) to look at a target (when ResetCamera() is called by another script) and then getting the player to resume control. The main reason I am doing this is so I can switch between FPS and TPS cameras and remain looking at the same target.
I can look at the target fine, but ONLY if I stop setting the rotation based on yaw and pitch (from "Mouse X" and "Mouse Y" inputs) in LateUpdate() after I set the lookAtTarget in ResetCamera(), but that means the player can no longer look around.
However, I cannot figure out how to get the correct yaw and pitch values after this so the player can continue looking around from the new look at target. How could I do this so the player could continue looking around?
public class PlayerCamera : MonoBehaviour {
public float mouseSensitivity = 10f;
public Transform target;
public float dstFromTarget = 2f;
public Vector2 pitchConstraints = new Vector2(-20f, 85f);
public float rotSmoothTime = .12f;
Vector3 rotSmoothVel;
Vector3 currRot;
float yaw;
float pitch;
void LateUpdate() {
yaw += Input.GetAxis("Mouse X") * mouseSensitivity;
pitch -= Input.GetAxis("Mouse Y") * mouseSensitivity;
pitch = Mathf.Clamp(pitch, pitchConstraints.x, pitchConstraints.y);
currRot = Vector3.SmoothDamp(currRot, new Vector3(pitch, yaw), ref rotSmoothVel, rotSmoothTime);
transform.eulerAngles = currRot;
transform.position = target.position - transform.forward * dstFromTarget;
}
public void ResetCamera(Transform lookAtTarget) {
transform.LookAt(lookAtTarget);
// below gets yaw and pitch values that move the camera to look at the
// wrong location
// yaw = transform.eulerAngles.x;
// pitch = transform.eulerAngles.y;
// pitch = Mathf.Clamp(pitch, pitchConstraints.x, pitchConstraints.y);
// currRot = new Vector3(pitch, yaw);
}
}

Answer 1

So, I figured out how to do what I wanted. Below is a script for a third or first person (just adjust the dstFromTarget variable to zero) camera that can be rotated to look at a target by another script with ResetCamera() and the player can resume moving around from that point.
public class PlayerCamera : MonoBehaviour {
public bool isFirstPerson = false;
public float mouseSensitivity = 10f;
public Transform target;
public float dstFromTarget = 2f;
public bool invertedPitch = false;
public float smoothTime = .12f;
public float minimumX = -85f;
public float maximumX = 85f;
// LateUpdate, so the Camera Target will definitely have been set
void LateUpdate () {
// first person updating is handled by Inverse kinematics stuff in my case
if (isFirstPerson) return;
UpdateStuff();
}
public void UpdateStuff() {
float yaw = Input.GetAxisRaw("Mouse X");
float pitch = -Input.GetAxisRaw("Mouse Y");
if (invertedPitch) {
pitch *= -1f;
}
Vector3 yRot = new Vector3(0f, yaw, 0f) * mouseSensitivity;
Vector3 xRot = new Vector3(pitch, 0f, 0f) * mouseSensitivity;
xRot = ClampRotationAroundXAxis(transform.rotation, xRot);
Transform newTrans = transform;
newTrans.Rotate(xRot);
newTrans.Rotate(yRot, Space.World);
transform.rotation = Quaternion.Slerp(transform.rotation, newTrans.rotation, smoothTime * Time.deltaTime);
transform.position = target.position - transform.forward * dstFromTarget;
}
public void ResetCamera(Transform lookAtTarget) {
transform.LookAt(lookAtTarget);
}
Vector3 ClampRotationAroundXAxis(Quaternion q, Vector3 xrot) {
q.x /= q.w;
q.y /= q.w;
q.z /= q.w;
q.w = 1.0f;
float angleX = 2.0f * Mathf.Rad2Deg * Mathf.Atan (q.x);
if (angleX < minimumX && xrot.x < 0f) {
xrot = Vector3.zero;
}
if (angleX > maximumX && xrot.x > 0f) {
xrot = Vector3.zero;
}
return xrot;
}
}