攝像機(jī)跟隨鼠標(biāo)移動(dòng)

var rSpeed = 3.0;
var mSpeed = 20.0;
var X = 0.0;
var Y = 0.0;

function Update (){

    X += Input.GetAxis("Mouse X")*rSpeed;    
    Y += Input.GetAxis("Mouse Y")*rSpeed; 
    transform.localRotation = Quaternion.AngleAxis(X, Vector3.up);
    transform.localRotation *= Quaternion.AngleAxis(Y, Vector3.left);
    transform.position += transform.forward*mSpeed*Input.GetAxis("Vertical")*Time.deltaTime;
    transform.position += transform.right*mSpeed*Input.GetAxis("Horizontal")*Time.deltaTime;
}

另一個(gè)控制腳本

using UnityEngine;
using System.Collections;

public class CameraControl : MonoBehaviour {

    private float camSpeed= 0.50f;
    
    void Start()
    {
        SetPosition(); // Set the initial position of the camera, this needed just for this demonstation
    }
    
    void  LateUpdate ()
    {
        if (Input.mousePosition.y <= 2) // If the mouse is at the bottom of the visible screen or lower then continue
        {
            if(transform.position.z >= -25f) // If the camera is within desired Z axis then continue
            {
                transform.Translate(0, 0, -camSpeed, Space.World); // this moves the camera down based on the worlds vectors
            }
        }
        if (Input.mousePosition.y >= Screen.height -2) // If the mouse is at the top of the visible screen or higher then continue
        {
            if(transform.position.z <= 15) // If the camera is within desired Z axis then continue
            {
                transform.Translate(0, 0, camSpeed, Space.World); // this moves the camera up based on the worlds vectors
            }
        }
        if (Input.mousePosition.x <= 2) // If the mouse is at the left of the visible screen or lower then continue
        {
            if(transform.position.x >= -25f) // If the camera is within desired X axis then continue
            {
                transform.Translate(-camSpeed, 0, 0, Space.World); // this moves the camera left based on the worlds vectors
            }
        }
        if (Input.mousePosition.x >= Screen.width -2) // If the mouse is at the right of the visible screen or higher then continue
        {
            if(transform.position.x <= 25)  // If the camera is within desired X axis then continue
            {
                transform.Translate(camSpeed, 0, 0, Space.World); // this moves the camera right based on the worlds vectors
            }
        }
        if(Input.GetAxis("Mouse ScrollWheel") < 0 && Camera.main.transform.position.y <= 15) // If the mouse scroll wheel is scrolled down and not scrolled further than a number then continue
        {
            transform.Translate(0, 0, -camSpeed); // move the camera back on the z axis
        }
        if(Input.GetAxis("Mouse ScrollWheel") > 0  && Camera.main.transform.position.y >= 5) // If the mouse scroll wheel is scrolled up and not scrolled further than a number then continue
        {
            transform.Translate(0, 0, camSpeed);// move the camera forward on the z axis
        }
    }
    
    private void SetPosition()
    {
        transform.rotation = Quaternion.Euler(40f, 0, 0); // Set the camera's rotation
    }
}

第三人稱攝像機(jī)跟隨

using UnityEngine;
using System.Collections;

public class CamerFllow : MonoBehaviour
{

    public Transform target;//要跟隨的目標(biāo)
    public float distance = 8.0f;//攝像機(jī)離目標(biāo)的距離
    public float height = 5.0f;//攝像機(jī)離目標(biāo)的高度
    public float heihtDamping = 0.3f;//水平跟隨平滑系數(shù)
    public float rotationDamping = 0.3f;//跟隨高度變化系數(shù)
    public float refRotation = 0f;
    public float refHeight = 0f;

    void LateUpdate()
    {
        if (target)
        {
            float targetRotationAngle = target.eulerAngles.y;//目標(biāo)的朝向
            float targetHeight = target.position.y + height;//得到跟隨的高度

            float cameraRotationAngle = transform.eulerAngles.y;//攝像機(jī)的朝向
            float cameraHeight = transform.position.y;//攝像機(jī)的高度

            cameraRotationAngle = Mathf.SmoothDampAngle(cameraRotationAngle, targetRotationAngle, ref refRotation, rotationDamping);//從攝像機(jī)目前的角度變換到目標(biāo)的角度

            cameraHeight = Mathf.SmoothDamp(cameraHeight, targetHeight, ref refHeight, heihtDamping);//從攝像機(jī)目前的高度平滑變換到目標(biāo)的高度

            Quaternion cameraRotation = Quaternion.Euler(0, cameraRotationAngle, 0);//每幀在Y軸上旋轉(zhuǎn)攝像機(jī) 旋轉(zhuǎn)的角度為cameraRotationAngle 因?yàn)樯厦娴拇a已經(jīng)得到了每幀要從攝像機(jī)當(dāng)前的角度變換到目標(biāo)角度cameraRotationAngle

            //下面幾句代碼主要設(shè)置攝像機(jī)的位置
            transform.position = target.position;
            transform.position -= cameraRotation * Vector3.forward * distance;
            transform.position = new Vector3(transform.position.x, cameraHeight, transform.position.z);

            //使攝像機(jī)一直朝著目標(biāo)方向
            transform.LookAt(target);
        }
    }
}