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

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
/* 弓对象 */
public class ArmBow : MonoBehaviour
{
    [SerializeField] AnimationPlayer AP_arm;
    [SerializeField] AnimationPlayer AP_bow;
    [SerializeField] GameObject arrow;
    BowCamera _bowCamera;
    BowCamera bowCamera {
        get {
            if (!_bowCamera) _bowCamera = GetComponentInParent<BowCamera>();
            return _bowCamera; 
        }
    }
    //有效射击目标集合，可以理解为射中集合中的目标才能得分
    public HashSet<TargetBody> validTargets = new HashSet<TargetBody>();
    
    //射箭姿态记录索引倒退数，根据射击难度制造误差
    [NonSerialized] public int shootBackTime = 0;

    bool canShoot = false;
    bool pulling = false;
    bool readying = false;

    //禁止准备的外部接口
    [NonSerialized] public bool banReady = false;
    //禁止射击的外部接口
    [NonSerialized] public bool banShoot = false;

    //九轴姿态记录
    [NonSerialized] public Quaternion[] recordRotations = new Quaternion[100];
    float[] recordRotationVars = new float[99];
    [NonSerialized] public int recordCount = 0;

    public static ArmBow ins;

    void Awake()
    {
        ins = this;
        //initdata
        int currentShootLevel = LoginMgr.myUserInfo.shootLevel;
        int[] shootBackTimes = {0, 1, 5};
        shootBackTime = shootBackTimes[currentShootLevel];
    }

    void Start()
    {
        this.readyShoot();
    }

    void FixedUpdate()
    {
        if (this.canShoot)
        {
            if (DebugBowPower.ins) DebugBowPower.ins.DoUpdate();
        }
    }

    void Update()
    {
        if (Input.GetKeyDown(KeyCode.Q)) 
        {
            this.ADS_fire();
        }
        if (this.pulling) {
            this.bowCamera.updateFollowPullBow();
        } 
        else if (!this.canShoot)
        {
            this.bowCamera.updateGiveUpPullBow();
        }
    }

    void onComplete(AnimationPlayerCompleteResult res) {
        if (res.index == 0) {
            this.readying = true;
            this.idle();
            this.Invoke("idleToADS", 0.1f);
        }
        else if (res.index == 2) {
            this.ADS_idle();
        }
    }

    public void ready() {
        if (banReady) return;
        GameMgr.ins.gameMode.PauseTimeCounting(this);
        GameMgr.ins.gameMode.onBowReady();
        this.arrow.SetActive(true);
        AP_arm.play(0, WrapMode.Once);
        AP_bow.play(0, WrapMode.Once);
        AP_arm.completeCallback = onComplete;
        this.pulling = false;
        this.canShoot = false;
    }

    void idle() {
        AP_arm.play(1, WrapMode.Loop);
        AP_bow.play(1, WrapMode.Loop);
        AP_arm.completeCallback = null;
        this.pulling = false;
        this.canShoot = false;
        if (DebugBowPower.ins) DebugBowPower.ins.Init();
    }

    public void idleToADS() {
        AP_arm.play(2, WrapMode.Once);
        AP_bow.play(2, WrapMode.Once);
        AP_arm.completeCallback = onComplete;
        this.pulling = true;
        this.canShoot = false;
    }

    void ADS_idle() {
        GameMgr.ins.gameMode.ResumeTimeCounting(this);
        this.canShoot = true;
        this.pulling = false;
        if (DebugBowPower.ins) DebugBowPower.ins.PullFinish();
    }

    public void ADS_fire() {
        if (!canShoot || banShoot || GameMgr.ins.gamePause) return;
        GameMgr.ins.gameMode.onBowShoot();
        this.pulling = false;
        this.canShoot = false;
        this.readying = false;
        AP_bow.play(0, WrapMode.Once);
        this.arrow.SetActive(false);
        shoot();
    }

    public void readyShoot() {
        this.bowCamera.SetCameraFieldOfView(60);
        this.ready();
    }

    void shoot() {
        // 筛选出一个稳定的发射角度
        Quaternion absolute_rotation = this.bowCamera.transform.rotation;
        Quaternion final_rotation = this.bowCamera.transform.rotation;
        if (recordCount >= recordRotations.Length) {
            int single_check_count = 6;
            float min_wave = float.MaxValue;
            for (int i = 0; i < recordRotationVars.Length; i++)
            {
                recordRotationVars[i] = Quaternion.Angle(recordRotations[i], recordRotations[i + 1]);
                if (i >= single_check_count - 1) 
                {
                    float wave = 0;
                    for (int j = i; j > i - single_check_count; j--)
                    {
                        wave += recordRotationVars[j];
                    }
                    if (wave < min_wave)
                    {
                        min_wave = wave;
                        int best_rotation_index = i - single_check_count + 1;
                        absolute_rotation = recordRotations[best_rotation_index];
                        best_rotation_index -= this.shootBackTime;
                        if (best_rotation_index < 0) best_rotation_index = 0;
                        final_rotation = recordRotations[best_rotation_index];
                    }
                }
            }
        }

        Quaternion oldCameraRotation = Camera.main.transform.rotation;
        Camera.main.transform.rotation = absolute_rotation;
        RaycastHit absoluteRay = CrossHair.ins.GetRaycastHit();
        Camera.main.transform.rotation = oldCameraRotation;
        
        Vector3 shootOutPosition = this.bowCamera.transform.position;
        Vector3 arrowEuler = absolute_rotation.eulerAngles;
        arrowEuler.z = 0; //绝对角可能是从原始九轴记录数组里取出来的，它的z可能不是0
        GameObject arrowCopy = GameObject.Instantiate(this.arrow, shootOutPosition, Quaternion.Euler(arrowEuler));

        Vector3 s1 = arrowCopy.transform.localScale;
        Vector3 s2 = bowCamera.transform.localScale;
        arrowCopy.transform.localScale = new Vector3(s1.x * s2.x, s1.y * s2.y, s1.z * s2.z);

        Arrow arrowComp = arrowCopy.AddComponent<Arrow>();
        arrowComp.armBow = this;
        arrowComp.shootOutPosition = shootOutPosition;
        arrowComp.absoluteRay = absoluteRay;
        arrowComp.offsetAngle = GameDebug.ins ? 
            GameDebug.ins.GetOffsetAngle() : 
            FormatAngle(final_rotation.eulerAngles.x) - FormatAngle(absolute_rotation.eulerAngles.x);

        if (ShootCheck.ins && !GameMgr.debugInEditor) 
        {
            Arrow.speed = GameMgr.RealSizeToGameSize(ShootCheck.ins.shootSpeed);
        }

        arrowCopy.SetActive(true);  
        arrow.SetActive(false);

        AudioMgr.ins.PlayShoot(AudioMgr.GetAudioSource(arrowCopy));
        // this.gameObject.SetActive(false);
        if (AimHandler.ins) AimHandler.ins.BanControlObjRotate(true);
    }

    //因为Unity引擎的规则，向上时359~270度，向下是0~90度
    //为了方便数学运算，换算成 向上时0~90度，向下是0~-90度
    float FormatAngle(float value)
    {
        if (value > 180) value = 360 - value;
        else value = -value;
        return value;
    }

    public void OnEnable() 
    {
        AudioMgr.GetAudioSource(this.gameObject).clip = null;
    }

    public void Hide()
    {
        this.transform.localScale = Vector3.zero;
    }

    public void Show()
    {
        this.transform.localScale = new Vector3(1, 1, 1);
    }

    public bool IsCanShoot()
    {
        return canShoot;
    }

    public void mouseDown() 
    {
        if (!this.readying) return;
        if (this.pulling || this.canShoot) return;
        this.idleToADS();
    }

    public void mouseUp() 
    {
        if (!this.readying) return;
        if (this.pulling) {
            this.idle();
        } else if (this.canShoot) {
            this.ADS_fire();
        }
    }
}