public enum CamViewMode
{
FREE,//自由视角
TOP,//俯视角
LIMIT//固定视角
}
public class CameraControl: MonoBehaviour
{
private Transform camTrans;
/// <summary>
/// 是否是第一次点击
/// </summary>
private bool _isFirstClick = true;
/// <summary>
/// 相机视角模式
/// </summary>
public CamViewMode viewMode = CamViewMode.FREE;
[SerializeField]
private Vector3 _resetTrans;//相机重置位置
[SerializeField]
private Vector3 _resetAngles;//相机重置角度
[Header("键盘移动速度")]
public float m_speed = 100f;
[Header("鼠标中键移动速度")]
public float m_mSpeed = 20f;
[Header("旋转速度")]
public float m_rSpeed = 3f;
[Header("缩放速度")]
public float m_sSpeed = 5f;
[Header("最大缩放距离")]
public float m_maxDistance = 10f;
[Header("中键移动的缓动值")]
public float moveSmoothing = 0.2f;
private float m_deltX = 0f;//计算右键旋转
private float m_deltY = 0f;//计算右键旋转
void Start()
{
camTrans = transform;
}
void Update()
{
//在UI上时不执行
//if (EventSystem.current.IsPointerOverGameObject()) return;
if (viewMode != CamViewMode.LIMIT)
{
//有的没加缓动效果
CameraKeyMove();
CameraMiddleMove();
CameraRotate();
CameraScale();
}
//不同视角
CameraMode();
//相机复位
if (Input.GetKeyUp(KeyCode.Space))
{
CameraReset();
}
}
private void CameraMode()
{
switch (viewMode)
{
case CamViewMode.TOP:
camTrans.localRotation = Quaternion.Euler(90, camTrans.localRotation.eulerAngles.y, camTrans.localRotation.eulerAngles.z);
break;
default:
break;
}
}
void CameraScale()
{
//鼠标滚轮场景缩放;
if (Input.GetAxis("Mouse ScrollWheel") != 0)
{
float m_distance = Input.GetAxis("Mouse ScrollWheel") * m_sSpeed;
Vector3 newPos = camTrans.localPosition + camTrans.forward * m_distance;
Debug.Log(newPos.magnitude);
if (newPos.magnitude >= m_maxDistance) return;
camTrans.localPosition = newPos;
}
}
void CameraRotate()
{
//鼠标右键点下控制相机旋转;
if (Input.GetMouseButton(1))
{
if (!_isFirstClick)
{
m_deltX += Input.GetAxis("Mouse X") * m_rSpeed;
m_deltY -= Input.GetAxis("Mouse Y") * m_rSpeed;
}
else//第一次点击时规划角度
{
_isFirstClick = false;
m_deltX = _resetAngles.y;
m_deltY = _resetAngles.x;
}
m_deltX = ClampAngle(m_deltX, -360, 360);
m_deltY = ClampAngle(m_deltY, -70, 70);
camTrans.localRotation = Quaternion.Euler(m_deltY, m_deltX, 0);
}
}
void CameraKeyMove()
{
//键盘移动
if (Input.GetKey(KeyCode.W) || Input.GetKey(KeyCode.UpArrow)&& CanMove(-transform.forward))
{
camTrans.Translate(Vector3.forward * Time.deltaTime * m_speed);
}
if (Input.GetKey(KeyCode.S) || Input.GetKey(KeyCode.DownArrow))
{
camTrans.Translate(Vector3.back * Time.deltaTime * m_speed);
}
if (Input.GetKey(KeyCode.A) || Input.GetKey(KeyCode.LeftArrow))
{
camTrans.Translate(Vector3.left * Time.deltaTime * m_speed);
}
if (Input.GetKey(KeyCode.D) || Input.GetKey(KeyCode.RightArrow))
{
camTrans.Translate(Vector3.right * Time.deltaTime * m_speed);
}
if (Input.GetKey(KeyCode.Q))
{
Debug.Log(Vector3.down);
camTrans.Translate(Vector3.down * Time.deltaTime * m_speed*1f);
}
if (Input.GetKey(KeyCode.E))
{
camTrans.Translate(Vector3.up * Time.deltaTime * m_speed*1f);
}
}
void CameraMiddleMove()
{
//点击鼠标中键控制移动;
if (Input.GetMouseButton(2))
{
float dx = Input.GetAxis("Mouse X");
float dy = Input.GetAxis("Mouse Y");
Vector3 yz = camTrans.forward + camTrans.up;
yz.y = 0;
Vector3 TargetLookAt = camTrans.position;
TargetLookAt -= (yz * dy + transform.right * dx) * m_mSpeed;
camTrans.position = Vector3.Lerp(camTrans.position, TargetLookAt, moveSmoothing);
}
}
public void CameraReset()
{
//相机位置和角度重置，需要自己设一个初始的位置和角度
camTrans.localPosition = _resetTrans;
camTrans.localRotation = Quaternion.Euler(_resetAngles);
_isFirstClick = true;
}
//规划角度;
float ClampAngle(float angle, float minAngle, float maxAgnle)
{
if (angle <= -360)
angle += 360;
if (angle >= 360)
angle -= 360;
return Mathf.Clamp(angle, minAngle, maxAgnle);
}
private float posX, posY, posZ;
private float rotX, rotY, rotZ;
public void InitCamera()
{
if (!PlayerPrefs.HasKey("posX"))
{
posX = transform.localPosition.x;
}
else
{
posX = PlayerPrefs.GetFloat("posX"); ;
}
if (!PlayerPrefs.HasKey("posY"))
{
posY = transform.localPosition.y;
}
else
{
posY = PlayerPrefs.GetFloat("posY"); ;
}
if (!PlayerPrefs.HasKey("posZ"))
{
posZ = transform.localPosition.z;
}
else
{
posZ = PlayerPrefs.GetFloat("posZ"); ;
}
if (!PlayerPrefs.HasKey("rotX"))
{
rotX = transform.localRotation.eulerAngles.x;
}
else
{
rotX = PlayerPrefs.GetFloat("rotX"); ;
}
if (!PlayerPrefs.HasKey("rotY"))
{
rotY = transform.localRotation.eulerAngles.y;
}
else
{
rotY = PlayerPrefs.GetFloat("rotY"); ;
}
if (!PlayerPrefs.HasKey("rotZ"))
{
rotZ = transform.localRotation.eulerAngles.z;
}
else
{
rotZ = PlayerPrefs.GetFloat("rotZ"); ;
}
transform.localPosition = new Vector3(posX,posY,posZ);
transform.localRotation = Quaternion.Euler(rotX,rotY,rotZ);
_resetTrans= new Vector3(posX, posY, posZ);
_resetAngles = new Vector3(rotX,rotY,rotZ);
//Debug.Log(transform.localRotation.eulerAngles.y);
//Debug.Log(_resetAngles);
}
//保存摄像头位置
public void SaveCamera()
{
posX = transform.localPosition.x;
posY = transform.localPosition.y;
posZ = transform.localPosition.z;
rotX = transform.localRotation.eulerAngles.x;
rotY = transform.localRotation.eulerAngles.y;
rotZ = transform.localRotation.eulerAngles.z;
PlayerPrefs.SetFloat("posX",posX);
PlayerPrefs.SetFloat("posY",posY);
PlayerPrefs.SetFloat("posZ",posZ);
PlayerPrefs.SetFloat("rotX",rotX);
PlayerPrefs.SetFloat("rotY",rotY);
PlayerPrefs.SetFloat("rotZ",rotZ);
PlayerPrefs.Save();
Debug.Log("保存归档");
}
//规划角度;
float ClampAngle(float angle, float minAngle, float maxAgnle)
{
if (angle <= -360)
angle += 360;
if (angle >= 360)
angle -= 360;
return Mathf.Clamp(angle, minAngle, maxAgnle);
}
RaycastHit hit;
float rayLength = 50f;
public bool CanMove(Vector3 dir)
{
Ray ray = new Ray(transform.position,dir);
if (Physics.Raycast(ray,out hit,rayLength))
{
return false;
}
return true;
}
}