how to make you camera follow your player unity 3d code example

Example 1: how to make camera follow player unity 2d

public class CameraFollow : MonoBehaviour {

    public GameObject Target;
    private Vector3 Offset;


    // Start is called before the first frame update
    void Start() {

        Offset = transform.position - Target.transform.position;
        
    }

    // Update is called once per frame
    void Update() {
    
        transform.position = Target.transform.position+Offset;

        
    }
}

Example 2: linerenderer follow camera unity

You can render the line using a dedicated camera. Use .depth to control the order in which cameras render (i.e. render the line on top of -everything-), and .cullingMask to define what each camera renders (or not).

http://unity3d.com/support/documentation/ScriptReference/Camera-depth.html

http://unity3d.com/support/documentation/ScriptReference/Camera-cullingMask.html