how can I add headbobbing to any camera script ?

Questions & Answers
1

I am trying to add headbobbing to my game, but none of them I found seemed to work well with my camera script and my playermovement script. I was wondering if there was a way that I can add headbobbing without the playermovement script and camera script getting in the way ?
Heres my playermovement and camerascript :

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class playerlook : MonoBehaviour
{
    [SerializeField] private float sensx;
    [SerializeField] private float sensy;

    Camera cam;

    float mousex;
    float mousey;

    float multiplier = 0.01f;
    float xrotation;
    float yrotation;
    public int stunt;
    public int dead;

    private void Start()
    {
        dead = gameObject.GetComponent<general>().dead;
        stunt = gameObject.GetComponent<playermovement>().stunt;
        cam = GetComponentInChildren<Camera>();
        Cursor.lockState = CursorLockMode.Locked;
        Cursor.visible = false;
    }

    private void Update()
    {
        dead = gameObject.GetComponent<general>().dead;
        stunt = gameObject.GetComponent<playermovement>().stunt;
        if (dead == 0)
        {
            Myinput();
            cam.transform.localRotation = Quaternion.Euler(xrotation, 0, 0);
            transform.rotation = Quaternion.Euler(0, yrotation, 0);
        }
        else
        {
            dead = dead;
        }
    }

    void Myinput()
    {
        mousex = Input.GetAxisRaw("Mouse X");
        mousey = Input.GetAxisRaw("Mouse Y");

        yrotation += mousex * sensx * multiplier;
        xrotation += mousey * -sensy * multiplier;

        xrotation = Mathf.Clamp(xrotation, -90f, 90f);
    }

}

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class playermovement : MonoBehaviour
{
    float playerheight = 2f;
    [Header("Movement")]
    public float movespeed = 3.5f;
    float horizontalmovement;
    float verticalmovement;
    [SerializeField] float airMultiplier = 0.4f;

    [Header("Keybinds")]
    [SerializeField] KeyCode jumpKey = KeyCode.Space;

    [Header("Jumping")]
    public float jumpForce = 5f;

    [Header("Drag")]
    [SerializeField] float groundDrag = 6f;
    [SerializeField] float airDrag = 2f;


    bool isGrounded;
    public bool moving;
    float rbDrag = 6f;
    float movementMultiplier = 10f;
    public Vector3 movedirection;

    Rigidbody rb;
    public Animator anim;
    public float time;
    public int stunt;
    public int dead;
    public GameObject floor;
    public int slipperyboi;

    public float f = 500f; //sidewayforce
    public float ff = -500f;

    private void Start()
    {
        rb = GetComponent<Rigidbody>();
        rb.freezeRotation = true;
        time = 0;
        stunt = gameObject.GetComponent<general>().stunt;
        dead = gameObject.GetComponent<general>().dead;
        slipperyboi = floor.GetComponent<changingfloor>().slippery;
    }

    private void Update()
    {
        if (stunt == 1)
        {
            movespeed = 1f;
        }
        else
        {
            movespeed = 3.5f;
        }
        slipperyboi = floor.GetComponent<changingfloor>().slippery;
        isGrounded = Physics.Raycast(transform.position, Vector3.down, playerheight / 2 + 0.1f);
        //print(isGrounded);

        //Myinput();
        Myinput();
        ControlDrag();

        if (Input.GetKeyDown(jumpKey) && isGrounded)
        {
            if (stunt == 1)
            {
                stunt = 1;
            }
            else
            {
                Jump();
            }
        }

        if (gameObject.GetComponent<Rigidbody>().velocity.magnitude > 0.01f)
        {
            moving = true;
        }
        else
        {
            moving = false;
        }

        anim.SetBool("movingornot", moving);
        anim.SetBool("grounded", isGrounded);

    }

    void Jump()
    {
        rb.AddForce(transform.up * jumpForce, ForceMode.Impulse);
    }

    void ControlDrag()
    {
        if (isGrounded)
        {
            rb.drag = groundDrag;
        }
        else
        {
            rb.drag = airDrag;
        }
    }

    void Myinput()
    {
        horizontalmovement = Input.GetAxisRaw("Horizontal");
        verticalmovement = Input.GetAxisRaw("Vertical");

        movedirection = transform.forward * verticalmovement + transform.right * horizontalmovement;
    }

    private void FixedUpdate()
    {
        stunt = gameObject.GetComponent<general>().stunt;
        dead = gameObject.GetComponent<general>().dead;
        slipperyboi = floor.GetComponent<changingfloor>().slippery;
        if (stunt == 1)
        {
            stunt = 1;
        }
        if (dead > 0)
        {
            dead = dead;
        }
        else
        {
            Moveplayer();
        }




        
    }

    void Moveplayer()
    {
        if (isGrounded)
        {
            //rb.AddForce(movedirection * movespeed * movementMultiplier);
            rb.AddForce(movedirection.normalized * movespeed * movementMultiplier, ForceMode.Acceleration);
            //rb.AddForce(movedirection * movespeed * movementMultiplier, ForceMode.Acceleration);
        }
        else if (!isGrounded)
        {
            //rb.AddForce(movedirection * movespeed * movementMultiplier * airMultiplier);
            rb.AddForce(movedirection.normalized * movespeed * movementMultiplier * airMultiplier, ForceMode.Acceleration);
            //rb.AddForce(movedirection * movespeed * movementMultiplier * airMultiplier, ForceMode.Acceleration);
        }

    }


}
2

Interesting question. I assume you are talking about a 1st person game. If you’re creating a 3rd person game, you might like to try the Bones Stimulator asset from the Asset Store, which I think is excellent. It’s also part of the current Humble Bundle Unity Tools package, which is a bargain at about 1£/1$/1€.

Back to first person. Were I to do this, I’d use animation. Simply rotate the camera back and forth around the Z axis and maybe slightly up and down. Make sure you adjust the Animation Curves to make them sinusoidal (ease in/ease out) to be realistic.

The question is what do you do when you want to move quickly? In that case, I’d use a Blend Tree, creating a couple of animations and passing player speed through as a parameter. That way, the Blend Tree interpolates based on current speed, making the bob more effective.

There may be something in Cinemachine using the Perlin Noise module, if you’re a CineMachine Ninja.

Finally, there’s a nice YouTube on the subject here