Unity для новичков. Простая камера от третьего лица. Часть 2

В продолжении рассмотрения камер от третьего лица были затронуты такие моменты, как:

слежение камеры за персонажем
вращение камеры при помощи мыши
реагирование на препятствия
реагирование на приближение к игроку

Для реализации этого был написан и рассмотрен нижеприведенный скрипт.

using System.Collections;
using UnityEngine;

public class PlayerCameraController : MonoBehaviour 
{
    public Camera cam;
    public Transform target;
    public float speedX = 360f;
    public float speedy = 240f;
    public float limitY = 40f;
    public float minDistance = 1.5f;
    public float hideDistance = 2f;
    public LayerMask obstacles;
    public LayerMask noPlayer;
    private float _maxDistance;
    private Vector3 _localPosition;
    private float _currentYRotation;
    private LayerMask _camOrigin;

    private Vector3 _position
    {
        get { return transform.position; }
        set { transform.position = value; }
    }

	void Start () 
	{
        _localPosition = target.InverseTransformPoint(_position);
        _maxDistance = Vector3.Distance(_position, target.position);
        _camOrigin = cam.cullingMask;
	}

	void LateUpdate () 
	{
        _position = target.TransformPoint(_localPosition);
        CameraRotation();
        ObstaclesReact();
        PlayerReact();

        _localPosition = target.InverseTransformPoint(_position);
    }

    void CameraRotation()
    {
        var mx = Input.GetAxis("Mouse X");
        var my = Input.GetAxis("Mouse Y");

        if (my != 0)
        {
            var tmp = Mathf.Clamp(_currentYRotation + my * speedy * Time.deltaTime, -limitY, limitY);
            if (tmp != _currentYRotation)
            {
                var rot = tmp - _currentYRotation;
                transform.RotateAround(target.position, transform.right, rot);
                _currentYRotation = tmp;
            }
        }
        if (mx != 0)
        {
            transform.RotateAround(target.position, Vector3.up, mx * speedX * Time.deltaTime);
        }

        transform.LookAt(target);
    }

    void ObstaclesReact()
    {
        var distance = Vector3.Distance(_position, target.position);
        RaycastHit hit;
        if (Physics.Raycast(target.position, transform.position - target.position, out hit, _maxDistance, obstacles))
        {
            _position = hit.point;
        }
        else if (distance < _maxDistance && !Physics.Raycast(_position, -transform.forward, .1f, obstacles))
        {
            _position -= transform.forward * .05f;
        }
    }

    void PlayerReact()
    {
        var distance = Vector3.Distance(_position, target.position);
        if (distance < hideDistance)
            cam.cullingMask = noPlayer;
        else
            cam.cullingMask = _camOrigin;
    }
}

using System.Collections;

using UnityEngine;

public class PlayerCameraController : MonoBehaviour

{

public Camera cam;

public Transform target;

public float speedX = 360f;

public float speedy = 240f;

public float limitY = 40f;

public float minDistance = 1.5f;

public float hideDistance = 2f;

public LayerMask obstacles;

public LayerMask noPlayer;

private float _maxDistance;

private Vector3 _localPosition;

private float _currentYRotation;

private LayerMask _camOrigin;

private Vector3 _position

{

get { return transform.position; }

set { transform.position = value; }

}

void Start ()

{

_localPosition = target.InverseTransformPoint(_position);

_maxDistance = Vector3.Distance(_position, target.position);

_camOrigin = cam.cullingMask;

}

void LateUpdate ()

{

_position = target.TransformPoint(_localPosition);

CameraRotation();

ObstaclesReact();

PlayerReact();

_localPosition = target.InverseTransformPoint(_position);

}

void CameraRotation()

{

var mx = Input.GetAxis("Mouse X");

var my = Input.GetAxis("Mouse Y");

if (my != 0)

{

var tmp = Mathf.Clamp(_currentYRotation + my * speedy * Time.deltaTime, -limitY, limitY);

if (tmp != _currentYRotation)

{

var rot = tmp - _currentYRotation;

transform.RotateAround(target.position, transform.right, rot);

_currentYRotation = tmp;

}

if (mx != 0)

{

transform.RotateAround(target.position, Vector3.up, mx * speedX * Time.deltaTime);

}

transform.LookAt(target);

}

void ObstaclesReact()

{

var distance = Vector3.Distance(_position, target.position);

RaycastHit hit;

if (Physics.Raycast(target.position, transform.position - target.position, out hit, _maxDistance, obstacles))

{

_position = hit.point;

}

else if (distance < _maxDistance && !Physics.Raycast(_position, -transform.forward, .1f, obstacles))

{

_position -= transform.forward * .05f;

}

void PlayerReact()

{

var distance = Vector3.Distance(_position, target.position);

if (distance < hideDistance)

cam.cullingMask = noPlayer;

else

cam.cullingMask = _camOrigin;

}

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