yichael_smartbow/Assets/BowArrow/Scripts/Game/BowCamera.cs

using System;
using UnityEngine;
using UnityEngine.EventSystems;
/* 弓的相机 */
public class BowCamera : MonoBehaviour
{
    //相机组件
    Camera _cameraComp;
    Camera cameraComp {
        get {
            if (!_cameraComp) _cameraComp = GetComponent<Camera>();
            return _cameraComp;
        }
    }
    //控制的手臂弓
    ArmBow _armBow;
    ArmBow armBow {
        get {
            if (!_armBow) _armBow = GetComponentInChildren<ArmBow>();
            return _armBow;
        }
    }
    //本地欧拉角记录值
    Vector3 localEulerAngles;
    //触摸模式开关
    bool isTouchMode = true;
    public static BowCamera ins;

    void Awake() {
        ins = this;
        localEulerAngles = transform.localEulerAngles;
    }

    void Update()
    {   
        //更新相机视野
        if (cameraComp && !banCameraFieldOfView) {
            cameraComp.fieldOfView = cameraFieldOfView;
        }

        //满足以下条件则阻止控制输入
        if (GameMgr.ins.gameOver) {
           return;
        }

        if (GameMgr.debugInEditor) {
            //鼠标控制镜头和拉弓射箭
            this.localEulerAngles.x = Mathf.Clamp(this.localEulerAngles.x - 2f * Input.GetAxis("Mouse Y"), -36, 36);
            this.localEulerAngles.y = Mathf.Clamp(this.localEulerAngles.y + 2f * Input.GetAxis("Mouse X"), -180, 180);   
            this.transform.localEulerAngles = this.localEulerAngles; 
            if (EventSystem.current.IsPointerOverGameObject())
            {
                return;
            }
            if (Input.GetMouseButtonDown(0)) {
                armBow.mouseDown();
            }
            else if (Input.GetMouseButtonUp(0)) {
                armBow.mouseUp();
            }
        } else {
            if (isTouchMode) {
                //触摸控制镜头和拉弓射箭
                if (Input.touches.Length == 1 && Input.touches[0].phase == TouchPhase.Moved)
                {
                    if (!EventSystem.current.IsPointerOverGameObject(Input.touches[0].fingerId))
                    {
                        this.localEulerAngles.x = Mathf.Clamp(this.localEulerAngles.x - Input.touches[0].deltaPosition.y * Time.deltaTime * 5, -36, 36);
                        this.localEulerAngles.y = Mathf.Clamp(this.localEulerAngles.y + Input.touches[0].deltaPosition.x * Time.deltaTime * 5, -180, 180);   
                        this.transform.localEulerAngles = this.localEulerAngles; 
                    }
                }
                if (Input.touches.Length > 0)
                {
                    foreach (Touch touch in Input.touches)
                    {
                        if (EventSystem.current.IsPointerOverGameObject(touch.fingerId)) return;
                    }
                    armBow.mouseDown();
                } 
                if (Input.touches.Length == 0)
                {
                    armBow.mouseUp();
                }
            } else {
                //镜头看向九轴姿态虚拟节点
                this.transform.LookAt(GameObject.Find("CameraToLook/Point").transform);
            }
        }
    }

    //---------------相机视野的相关操作---------------------

    //视野值记录
    float cameraFieldOfView = 60;
    //禁止相机视野改变
    [NonSerialized] public bool banCameraFieldOfView = false;
    
    //立马改变相机视野值
    public void SetCameraFieldOfView(float value) {
        cameraComp.fieldOfView = cameraFieldOfView = value;
    }

    //拉弓时的相机视野值变化
    public void updateFollowPullBow() {
        if (cameraFieldOfView > 40) {
            cameraFieldOfView -= 20 * Time.deltaTime;
        } else {
            cameraFieldOfView = 40;
        }
    }

    //松开拉弓时的相机视野值变化
    public void updateGiveUpPullBow() {
        if (cameraFieldOfView < 60) {
            cameraFieldOfView += 20 * Time.deltaTime;
        } else {
            cameraFieldOfView = 60;
        }
    }
}