Unity 相机问题 - 移动 FPS/TPS 相机以查看目标并恢复玩家控制

Question

我无法对齐我的玩家控制的摄像机（我对 FPS 和 TPS 使用相同的类）以查看目标（当另一个脚本调用 ResetCamera() 时）然后让玩家恢复控制。我这样做的主要原因是我可以在 FPS 和 TPS 相机之间切换并继续注视同一个目标。

我可以很好地查看目标，但只有在我设置lookAtTarget 之后，我停止在LateUpdate() 中根据yaw 和pitch（来自"Mouse X" 和"Mouse Y" 输入）设置旋转在ResetCamera()，但这意味着玩家不能再环顾四周。 但是，我无法弄清楚如何在此之后获得正确的 yaw 和 pitch 值，以便玩家可以继续从新的目标外观环顾四周。我该怎么做才能让玩家继续环顾四周？

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

所以，我想出了如何做我想做的事。下面是第三人称或第一人称的脚本（只需将 dstFromTarget 变量调整为零）相机可以通过另一个脚本使用 ResetCamera() 旋转以查看目标，并且玩家可以从该点继续移动。

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;
}

}