Unity中摄像机跟随

2023-12-24 01:58| 来源: 网络整理| 查看: 265

一、固定相机跟随，这种相机有一个参考对象，它会保持与该参考对象固定的位置，跟随改参考对象发生移动

public class CameraFlow : MonoBehaviour { public Transform target; private Vector3 offset; void Start() { //设置相对偏移 offset = target.position - this.transform.position; } void FixedUpdate() { this.transform.position = target.position - offset; } }

二、固定相机跟随，带有角度旋转。这一种相机跟随是对第一种相机跟随的改进，在原有基础上面，添加了跟随角度的控制

public class CameriaTrack : MonoBehaviour { private Vector3 offset = new Vector3(0,5,4);//相机相对于玩家的位置 private Transform target; private Vector3 pos; public float speed = 2; void Start () { target = GameObject.FindGameObjectWithTag("Player").transform; } void FixedUpdate() { pos = target.position + offset; this.transform.position = Vector3.Lerp(this.transform.position, pos, speed*Time.deltaTime);//调整相机与玩家之间的距离 Quaternion angel = Quaternion.LookRotation(target.position - this.transform.position);//获取旋转角度 this.transform.rotation = Quaternion.Slerp(this.transform.rotation, angel, speed * Time.deltaTime); } }

三、第三人称相机,这种相机跟随，是第三人称角度看向对象的，也就是一直看向对象的后面，如一直显示玩家的后背

public Transform target; public float distanceUp = 10f;//相机与目标的竖直高度参数 public float distanceAway = 10f;//相机与目标的水平距离参数 public float smooth = 2f;//位置平滑移动插值参数值 public float camDepthSmooth = 20f; void Update() { // 鼠标轴控制相机的远近 if ((Input.mouseScrollDelta.y = 3) || Input.mouseScrollDelta.y > 0 && Camera.main.fieldOfView //计算出相机的位置 Vector3 disPos = target.position + Vector3.up * distanceUp - target.forward * distanceAway; transform.position = Vector3.Lerp(transform.position, disPos, Time.deltaTime * smooth); //相机的角度 transform.LookAt(target.position); }

四、相机跟随，鼠标控制移动和缩放。相机与观察对象保持一定距离，可以通过鼠标进行上下左右旋转，通过鼠标滚轮进行放大和缩小操作

using UnityEngine; using System.Collections; using UnityEngine.EventSystems; public class target_control : MonoBehaviour { public Transform _target; public float distance = 50.0f; public float xSpeed = 250.0f; public float ySpeed = 120.0f; public int yMinLimit = -20; public int yMaxLimit = 80; private bool orbit = false; private bool pan = false; private bool zoom = false; private float zoomValue = 0; public float orbitDampX = 0.0f; public float orbitDampY = 0.0f; float panDampX = 0.0f; float panDampY = 0.0f; public float zoomDamp = 0.0f; public float dampingTime = 0.0f; public float x = 180.0f; public float y = 0.0f; public int planFactor = 5; public float zoomFactor = 2.0f; public Vector2 distLimit; public static Quaternion _rotation; public static Vector3 _position; public static target_control _target_control; public float _z_distance; private Vector3 angles; private Vector2 oldPosition1; private Vector2 oldPosition2; public float _target_distance = 5; private float target_x; private float target_y; private Vector3 _target_pos = Vector3.zero; public bool change_distance() { distance = Mathf.Lerp(distance, _target_distance, 0.04f); Debug.Log(distance + "/" + _target_distance); updateCamera(); if (Mathf.Abs(distance - _target_distance) _target_distance = distance; _z_distance = distance; angles = transform.eulerAngles; x = angles.y; y = angles.x; // Make the rigid body not change rotation if (GetComponent()) GetComponent().freezeRotation = true; } // Update is called once per frame void LateUpdate () { if (EventSystem.current.IsPointerOverGameObject()||_target ==null) { return; } if (Application.platform == RuntimePlatform.IPhonePlayer) { if (Input.touchCount == 1) { if (Input.GetTouch(0).phase == TouchPhase.Moved) { orbit = true; } else { orbit = false; } } else { orbit = false; } if (Input.touchCount > 1) { if (Input.GetTouch(0).phase == TouchPhase.Moved || Input.GetTouch(1).phase == TouchPhase.Moved) { var tempPosition1 = Input.GetTouch(0).position; var tempPosition2 = Input.GetTouch(1).position; if (isEnlarge(oldPosition1, oldPosition2, tempPosition1, tempPosition2)) { zoomValue = 0.1f; zoom = true; } else { zoomValue = -0.1f; zoom = true; } oldPosition1 = tempPosition1; oldPosition2 = tempPosition2; } else { zoom = false; } } else { zoom = false; } } else if (Application.platform == RuntimePlatform.Android) { if (Input.touchCount == 1) { if (Input.GetTouch(0).phase == TouchPhase.Moved) { orbit = true; } else { orbit = false; } } else { orbit = false; } if (Input.touchCount > 1) { if (Input.GetTouch(0).phase == TouchPhase.Moved || Input.GetTouch(1).phase == TouchPhase.Moved) { var tempPosition1 = Input.GetTouch(0).position; var tempPosition2 = Input.GetTouch(1).position; if (isEnlarge(oldPosition1, oldPosition2, tempPosition1, tempPosition2)) { zoomValue = 0.1f; zoom = true; } else { zoomValue = -0.1f; zoom = true; } oldPosition1 = tempPosition1; oldPosition2 = tempPosition2; } else { zoom = false; } } else { zoom = false; } } else { if (Input.GetMouseButton(1)) { orbit = true; } else { orbit = false; } if (Input.GetAxisRaw("Mouse ScrollWheel") != null) { zoomValue = Input.GetAxisRaw("Mouse ScrollWheel"); zoom = true; } else { zoom = false; } } if (orbit) { orbitDampX = Mathf.Lerp(orbitDampX, Input.GetAxis("Mouse X"), dampingTime * Time.deltaTime); orbitDampY = Mathf.Lerp(orbitDampY, Input.GetAxis("Mouse Y"), dampingTime * Time.deltaTime); } else { orbitDampX = Mathf.Lerp(orbitDampX, 0, dampingTime * Time.deltaTime); orbitDampY = Mathf.Lerp(orbitDampY, 0, dampingTime * Time.deltaTime); } if (zoom) { zoomDamp = Mathf.Lerp(zoomDamp, zoomValue, dampingTime * Time.deltaTime); } else { zoomDamp = Mathf.Lerp(zoomDamp, 0, dampingTime * Time.deltaTime); } if (!checkLerp(orbitDampX, 0) || !checkLerp(orbitDampY, 0)) { doOrbit(); } if (!checkLerp(zoomDamp, 0)) { doZoom(); } } bool isEnlarge(Vector2 oP1,Vector2 oP2 , Vector2 nP1, Vector2 nP2 ) { var leng1 =Mathf.Sqrt((oP1.x-oP2.x)*(oP1.x-oP2.x)+(oP1.y-oP2.y)*(oP1.y-oP2.y)); var leng2 =Mathf.Sqrt((nP1.x-nP2.x)*(nP1.x-nP2.x)+(nP1.y-nP2.y)*(nP1.y-nP2.y)); if(leng1 //small return false; } } bool checkLerp(float a,float b) { if (Mathf.Approximately(a, b)) { return true; } return false; } void doOrbit() { if (_target) { x += orbitDampX * xSpeed * 0.02f; y -= orbitDampY * ySpeed * 0.02f; y = ClampAngle(y, yMinLimit, yMaxLimit); updateCamera(); } } void doZoom() { distance -= zoomDamp * zoomFactor; distance = Mathf.Clamp(distance, -distLimit.x, distLimit.y); updateCamera(); } void updateCamera() { var rotation = Quaternion.Euler(y, x, 0); var position = rotation * new Vector3(0.0f, 0.0f, -distance) + _target.position; transform.rotation = rotation; transform.position = position; } static float ClampAngle (float angle,float min,float max) { if (angle 360) angle -= 360; return Mathf.Clamp(angle, min, max); } }

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