How can I get my camera to only follow my player down along the Y axis?

Archived Forums Questions & Answers
1

Hello Unity family,

Real quick. I’m making a 2D game where my player is moving downwards along the Y-axis. Nothing brings the player back up so I would like to lock my camera on the player. When my player jumps, the camera follows which is basically what i’m trying to prevent but I cant seem to find an “easy” solution for this. Thanks in advance if anyone can help me out!

3

Have the y component be the minimum of the current y position and the target’s y position plus offset.

public Transform target;

public float Vector3 offset;

void Update() 
{ 
    Vector3 targetPos = target.position;

    transform.position = new Vector3(
           targetPos.x + offset.x, 
           Mathf.Min(transform.position.y, targetPos.y + offset.y),
            targetPos.z + offset.z) ;
}
2

using UnityEngine;

[RequireComponent(typeof(Camera))]
public class CameraFollow : MonoBehaviour
{
#region Public Variables

//Value : Default Target of the camera when the game started
public Transform defaultTargetReference;
public Vector3 cameraOffSet = Vector3.one;
[Range(0f, 1f)]
public float cameraFollowingVelocity = 0.1f;

#endregion

#region Private Variables

private Transform m_TransformReference;
//Value : The current target of the camera will always be stored in this variable, as we can change it through the runtime.
private Transform m_CurrentTargetOfCamera;

private Vector3 m_ModifiedPosition;

#endregion

#region Mono Behaviour

private void Awake()
{
    m_TransformReference = transform;

    //Initially, the current target of the camera is our default target which we set from the editor
    m_CurrentTargetOfCamera = defaultTargetReference;
}

private void LateUpdate()
{
    //if : The current target of the camera is destroyed (Which you changed by calling the "ChangeCameraTarget()"), it will get back to its default target
    if (m_CurrentTargetOfCamera == null)
        m_CurrentTargetOfCamera = defaultTargetReference;

    //Calculating : Finding the new position of the camera considering the offset. for your case, I believe the offset would be (0,0,-10)

    //*************
    if (m_TransformReference.position.y > (m_CurrentTargetOfCamera.position.y + cameraOffSet.y))
    {

        m_ModifiedPosition = Vector3.Lerp(
                            m_TransformReference.position,
                            m_CurrentTargetOfCamera.position + cameraOffSet,
                            cameraFollowingVelocity
                        );

        //Assigning : the changed position
        m_TransformReference.position = m_ModifiedPosition;
    }

}

#endregion

#region Public Callback

/// <summary>
/// Use this function to change the camera target in runtime.
/// </summary>
/// <param name="t_CameraTarget"></param>
public void ChangeCameraTarget(Transform t_CameraTarget)
{

    m_CurrentTargetOfCamera = t_CameraTarget;
}

#endregion

}