GunfightShoot/assets/scripts/game/Enemy.ts

import { _decorator, Node, Tween, Vec3, ProgressBar, UIOpacity, tween, Label, SkeletalAnimation, Animation, SphereCollider, CylinderCollider, MeshCollider, Collider, PhysicsRayResult} from 'cc';
import { Game } from './Game';
import { Player } from './Player';
import { Utils } from '../utils/Utils';
import { ResUtil } from '../utils/ResUtil';
import MsgHints from '../utils/MsgHints';
import { userIns } from '../data/UserData';
import { autoBind } from '../extend/AutoBind';
import { BaseExp } from '../core/base/BaseExp';
import { GunBase } from '../items/base/GunBase';
import { PoolManager } from '../core/manager/PoolManager';
import { audioMgr } from '../core/manager/AudioManager';
import { Constants } from '../data/Constants';
import { GameEnums } from '../data/GameEnums';
const { ccclass, property } = _decorator;


@ccclass('Enemy')
export class Enemy extends BaseExp {
    @autoBind({type: ProgressBar,tooltip: "敌人血量"})
    public hpBar: ProgressBar  = null!;
    @autoBind({type: Node,tooltip: "敌人受伤节点"})
    public hurt_num: Node  = null!;
    @autoBind({type: Collider,tooltip: "敌人头部"})
    public headCollider: Collider  = null!;
    @autoBind({type: Collider,tooltip: "敌人身体"})
    public bodyCollider: Collider  = null!;
    @autoBind({type: Collider,tooltip: "坦克身体"})
    public tankCollider: Collider  = null!;
    @autoBind({type: Node,tooltip: "坦克行走"})
    public tank_walk: Node  = null!;
    @autoBind({type: Node,tooltip: "坦克射击"})
    public tank_shoot: Node  = null!;

    //浓烟节点 只有军车的时候血量低于30%才会有
    public heavySmoke: Node = null;
    //敌人动画节点
    private skeletalAnim: SkeletalAnimation = null!;
    //根据敌人类型动态获取
    public enemyNode: Node  = null!;
    public defaultSpeed: number = 0;
    public speed: number = 0;
    public isDead: boolean = false;

    //拥有的枪
    public gun: GunBase = null;
    //盾的节点
    public shieldNode: Node  = null!;
    //拥有的盾可以使用的血量
    private _shieldHp: number = 0;
    public set shieldHp(value: number) {
        this._shieldHp = value;
        if(this._shieldHp <= 0){
           this.removeShield();
        }
    }
    public get shieldHp(): number {
        return this._shieldHp;
    }

    //当前金币的值
    public goldCount : number = 0;
    //玩家
    public player: Player = null!;
    //运动方向
    public moveDir: Vec3 = new Vec3();
    //设置的血量
    public curHP: number = 0;
    //敌人的原始血量
    public originHP: number = 0;

    //是否是没打死逃逸
    public escape: boolean = false;
    //敌人数据
    public data: any = null;
    //是否能锁定攻击对象了
    public isCanLock: boolean = false;
    //是否是在开火
    private isFire: boolean = false;
    //减血的时候是否是打到头
    public isShotHead: boolean = false;
    //敌人行走的路径
    public pathList: Array<Vec3> = [];
    //当前行走的位置
    public curMoveIndex: number = 0;
    //枪旋转角度
    public angle: number = 0;
    //新增警戒状态属性
    public isAlert: boolean = false;
    //子弹击中的的位置
    public raycastResults:PhysicsRayResult = null;

    start() {
        this.hurt_num.active = false;
    }

    /**
     * 初始化数据
     */
    public async init(data: any){
        this.data = data;
        this.player = Game.I.player.getComponent(Player);
        const isTank:boolean = this.isTank();
        this.enemyNode = this.node.getChildByName(data.prb_name);
        if(isTank){
            this.tankCollider["args"] = [GameEnums.enemyPartType.tank,this];
        }else{
            this.headCollider["args"] = [GameEnums.enemyPartType.head,this];
            this.bodyCollider["args"] = [GameEnums.enemyPartType.body,this];
            this.skeletalAnim = this.enemyNode.getComponent(SkeletalAnimation);
            if(this.skeletalAnim){
               this.skeletalAnim?.play(GameEnums.enemyAnimType.idle);
            }
        }
        if(!this.enemyNode){
            MsgHints.show(`不存在:${JSON.stringify(data)}`)
            return;
        }
        this.isShotHead = false;
        this.isAlert = false;
        this.data = this.enemyData(data);
        this.isDead = false;
        this.escape = false;
        //设置血量
        this.curHP = this.originHP = data.hp;
        //敌人速度
        const s: number = data.speed * 3;
        this.speed = s;
        this.defaultSpeed = s;
        //设置枪的数据
        await this.createGun();
        //恢复初始雪条
        this.hpBar.progress = 1;
        this.hpBar.node.active = false;
        this.endFire();  
    }

    /**
     * 把武器的参数带到敌人身上
     */
    public enemyData(data:any){
        if(!data)return;
        //主武器id
        const mainWeaponID:number = data.weapon_id_1;
        let hp: number = Utils.clone(data).hp;
        let gData:any = userIns.enemyWeaponTable.find(e=>e.gun_id == mainWeaponID);
        //副武器 盾上的血量
        const secondWeaponID:number = data.weapon_id_2;
        if(secondWeaponID != 0){
            let sData:any = userIns.enemyWeaponTable.find(e=>e.gun_id == secondWeaponID);
            if(sData && sData.hp > 0){
               data.hp += hp + sData.shield_hp;
            }
        }
        return Object.assign(data,gData);
    }
    
    /**
     * 创建英雄所拥有的枪
     */
    public async createGun(){
        this.removeGun();
        //敌人主武器
        let gunPos:Node = this.enemyNode.getChildByName("gun_pos");
        const mainWeaponID:number = this.data.weapon_id_1;
        let mData:any = userIns.enemyWeaponTable.find(e=>e.gun_id == mainWeaponID);
        let gunNode:Node = await ResUtil.loadRes(`enemy/gun/${mData.gun_prb_name}`) as Node;
        this.gun = gunNode.getComponent(GunBase);
        gunNode.active = true;
        gunNode.parent = gunPos.parent;
        gunNode.worldPosition = gunPos.worldPosition.clone();
        gunNode.eulerAngles = gunPos.eulerAngles.clone();
        this.gun.init(this.data,this);
        //敌人附武器
        const secondWeaponID:number = this.data.weapon_id_2;
        if(secondWeaponID != 0){
            let sData:any = userIns.enemyWeaponTable.find(e=>e.gun_id == secondWeaponID);
            let shieldNode:Node = await ResUtil.loadRes(`enemy/gun/${sData.gun_prb_name}`,this.enemyNode) as Node;
            let shieldPos:Node = this.enemyNode.getChildByName("shield_pos");
            shieldNode.active = true;
            shieldNode.parent = shieldPos.parent;
            shieldNode.worldPosition = shieldPos.worldPosition.clone();
            shieldNode.eulerAngles = shieldPos.eulerAngles.clone();
            shieldNode.children[0].getComponent(Collider)["args"] = [GameEnums.enemyPartType.shield,this];
            this.shieldNode = shieldNode;
            this.shieldHp = sData.shield_hp;
        }
    }

    /**
     * 移除枪回收武器的时候调用
     */
    public removeGun(){
        if(this.gun){
           this.gun.endFire();
           PoolManager.putNode(this.gun.node);
           this.gun = null;
        }
        this.isFire = false;
        this.removeShield();
    }

    /**
     * 移除盾
     */
    public removeShield(){
        if(this.shieldNode){
           PoolManager.putNode(this.shieldNode);
           this.shieldNode = null;
        }
        this._shieldHp = 0;
    }

    /**
     * 坦克冒浓烟
     */
    public tankHeavySmoke(){
        if(!this.isTank())return;
        if(this.heavySmoke)return;
        //血量过低30%冒浓烟
        if(this.curHP < this.data.hp  * 0.3){
            ResUtil.playParticle(
                `effects/Prefabs/HeavySmoke`, 
                0, 
                new Vec3(0.2,0.2,0.2),
                (heavySmoke) => { 
                    heavySmoke.parent = this.node.parent; 
                    heavySmoke.worldPosition = this.node.worldPosition.clone();
                    heavySmoke.active = true;
                    this.heavySmoke = heavySmoke;
                }
            );
        }
    }
    
    /**
     * 扣掉血
     * @param hp 血
     * @param pData 英雄数据
     * @param isHeadShot 是否是爆头
     */
    public subHP(hp: number, pData:any){
        if(Game.I.isPause
            ||this.isDead
            ||hp == null
            ||this.curHP <= 0){
            return;
        }
        this.hpBar.node.active = true;
        this.scheduleOnce(() => {
            if(this.hpBar){this.hpBar.node.active = false;}
        }, 0.8);
        this.curHP -= hp;
        this.tankHeavySmoke();
        //这种是伤害超级高直接死亡了
        if(hp > this.originHP){
           this.escape = false;
           this.showHurt(Utils.numberToString(hp));
           this.recycle()
           return;
        }
        //敌人死亡
        if(this.curHP <= 0 && !this.isDead){
            this.escape = false;
            this.recycle();
        }else{//进度条和单独扣血
            this.hpBar.progress = this.curHP / this.originHP; 
            this.showHurt(Utils.numberToString(hp));
        }
    }

    /**
     * 开始敌人移动，面向玩家行走
     */
    public walk(points:Vec3[]) {
        if(points.length <= 0)return;
        this.curMoveIndex = 0;
        this.pathList = points;
        const time: number = 1 / this.data.speed;
        if(this.isTank()){
           this.tank_walk.active = true;
           this.tank_shoot.active = false;
        }else{
            ResUtil.playSkeletalAnim(this.skeletalAnim,GameEnums.enemyAnimType.walk,time);
        }
        this.updateDir(points[0].clone());
    }

    /**
     * 开始攻击
     */
    public beginFire(){
        if(this.player
            && !this.player.isDead 
            && this.gun){
            this.isFire = true;
            this.gun.fire();
        }
    }

    /**
     * 结束攻击
     */
    public endFire(){
        this.gun.endFire();
        this.isFire = false;
    }

    /**
     * 回收敌人节点
     * @param f 是否是游戏进行中的正常回收 程序主动回收不参数个数统计和加分这些 
     * @returns 
     */
    public recycle(f: boolean = true){
        if(!this.node 
            ||this.isDead){
            return;
        };
        if(f){//爆头击杀播放音效
            if(this.isTank()){
                audioMgr.playOneShot(Constants.audios.Tank_Explosion); 
            }else{
                audioMgr.playOneShot(this.isShotHead ? Constants.audios.head_shot : Constants.audios.enemy_die); 
            }
        }
        this.removeGun();
        this.curHP = 0;
        //动画和回收时间
        let recycleTime: number = 2;
        if(!this.isTank()){
           ResUtil.playSkeletalAnim(this.skeletalAnim,GameEnums.enemyAnimType.die);
        }else{
            //坦克爆炸后生成爆炸特效 
            ResUtil.playParticle(
                `effects/Prefabs/TankBoom`, 
                3, 
                new Vec3(0.1,0.1,0.1),
                (particle) => { 
                    particle.parent = this.node.parent; 
                    particle.worldPosition = this.node.worldPosition.clone();
                    particle.active = true;
                },
                () => {//爆炸完成后 回收浓烟
                    if(this.heavySmoke && this.heavySmoke.parent){
                        PoolManager.putNode(this.heavySmoke);
                        this.heavySmoke = null;
                    }
                }
            );
            this.node.active = false;
            recycleTime = 3;
        }
        this.isDead = true;
        this.hpBar.node.active = false;
        let death: Function = function(inite: boolean){
            this.node.getComponent(UIOpacity).opacity = 255;
            PoolManager.putNode(this.node);
            if(inite){
               Game.I.buildEnemys.subtractEnemy(this);
            }
        }.bind(this,f);
        this.unschedule(death)
        this.scheduleOnce(death,recycleTime);
    }



    /**
     * 展示敌人受到的伤害
     * @param hpStr 
     */
    public showHurt(hpStr: string) {
        if(Game.I.isGameOver || this.isDead) return;
        //敌人流血特效
        if(this.raycastResults?.collider?.node?.parent){
            ResUtil.playParticle(
                `effects/Prefabs/blood`, 
                1, 
                new Vec3(0.35,0.35,0.35),
                (blood) => { 
                    blood.active = true;
                    blood.setParent(this.raycastResults.collider.node.parent);
                    blood.worldPosition = this.raycastResults.hitPoint.add(this.raycastResults.hitNormal.multiplyScalar(0.01));
                    blood.forward = this.raycastResults.hitNormal.multiplyScalar(-1);
                }
            );
        }
        //创建3D伤害数字
        const n = PoolManager.getNode(this.hurt_num, this.hurt_num.parent);
        let label:Label = n.getComponent(Label);
        label.color = Utils.hexColor(this.isShotHead ? "#F51414" : "#FFFFFF");
        label.string = hpStr;
        const oPos: Vec3 = this.hpBar.node.position.clone();
        n.position = oPos;
        const oScale: Vec3 = this.hurt_num.scale.clone();
        n.scale = oScale;
        n.getComponent(UIOpacity).opacity = 255;
        let bezier: Vec3[] = [];
        let num: number = 100;
        let forward =  Utils.getRandomFloat(0, 1) > 0.5 ;
        if (forward) {
            bezier = [new Vec3(-(10/num)+oPos.x, (30/num)+oPos.y), new Vec3((-40/num)+oPos.x, (40/num)+oPos.y), new Vec3((-60/num)+oPos.x, oPos.y)];
        } else {
            bezier = [new Vec3((10/num)+oPos.x, (30/num)+oPos.y), new Vec3((40/num)+oPos.x, (40/num)+oPos.y), new Vec3((60/num)+oPos.x, oPos.y)];
        }
        n.position = new Vec3(bezier[2].x,bezier[2].y - (80/num),oPos.z);
        //贝塞尔曲线坐标函数
        let twoBezier = (t: number, p1: Vec3, cp: Vec3, p2: Vec3) => {
            let x = (1 - t) * (1 - t) * p1.x + 2 * t * (1 - t) * cp.x + t * t * p2.x;
            let y = (1 - t) * (1 - t) * p1.y + 2 * t * (1 - t) * cp.y + t * t * p2.y;
            return new Vec3(x, y, oPos.z);
        };
        let time: number = 0.65;
        tween(n)
        .parallel(
            tween()
            .to(time,{ scale: new Vec3(oScale.x * 0.4,oScale.y * 0.4,oScale.z * 0.4)}),
            tween()
            .to(time, bezier[2], { 
                onUpdate: (target: Vec3, ratio: number) => {
                    if(n.parent){
                       const pos: Vec3 = twoBezier(ratio, bezier[0], bezier[1], bezier[2]);
                       n.position = new Vec3(pos.x,pos.y - (80/num),oPos.z)
                    }
                }
            })
        ).call(function(){
            tween(this.getComponent(UIOpacity))
            .to(0.15,{opacity: 0})
            .call(()=>{
                PoolManager.putNode(this);
            })
            .start();
        }.bind(n)).start();
    }
    
    /**
     * 计算是否命中玩家
     * @returns 返回命中状态
     */
    public calculateIsHit():boolean{
        let isGuaranteedHit: boolean = false;
        //获取射击的精准度
        const data:any = this.getDifficultyData();
        //生成0-1随机数用于命中判定 根据precision范围确定命中逻辑
        const random = Math.random();
        if(data.precision < 0){//负值100%不命中
            isGuaranteedHit = false;
        }else if(data.precision > 1) {//超过1 100%命中
            isGuaranteedHit = true;
        }else {//正常范围：随机判定
            isGuaranteedHit = random <= data.precision;
        }
        return isGuaranteedHit;
    }
    
    /**
     * 轻松杀敌增加游戏难度 只有单其他附加因素 例如:连杀等叠加状态 给敌人增加血
     */
    public addDiffHP(){
        if(!this.node 
            ||this.isDead
            ||Game.I.isGameOver 
            ||this.isDead){
            return;
        };
        const data:any = this.getDifficultyData();
        if(data.hp_ratio > 0){
           this.curHP += this.originHP * data.hp_ratio;
        }
    }
   
    /**
    * 敌人的射击的精准度 获得难度数据
    */
    public getDifficultyData(): any{
        //获取基础精准度（玩家预设值）
        const precision: number = userIns.getCurLevelData().precision;
        let basePrecision: number = precision;
        let diff:any = {
            precision: precision,//增加或减少的精准度 0-100%
            hp_ratio: 0,//增加或减少的血量 0-100%
            reaction_time: 0,//增加或减少的反应时间 0-100%
        }
        const each: number = Math.floor(Game.I.buildEnemys.getCurKillNum() / 3);
        //连杀3个敌人的次数 AI精准度增加1%
        diff.precision += each * 0.01;
        //连续通关3次以上才有的难度
        const lx_num: number = 3;
        if(userIns.passNum > lx_num){//1、连续通关 AI生命值增加15% 精准度增加5%  
           diff.precision += userIns.passNum * 0.05;
           diff.precision = Math.min(basePrecision, 0.9);
           diff.hp_ratio += userIns.passNum * 0.15;
           diff.hp_ratio = Math.min(diff.hp_ratio, 1);
        }else{//2、通关失败 下一局 AI精准度下降5% AI反应时间增加0.5s
           diff.precision -= userIns.passNum * 0.05;
           diff.precision = Math.max(diff.precision, 0.1);
           diff.reaction_time += 0.5;
        }
        return diff;
    }


    /**
     * 更新敌人行走和变化方向
     */
    protected update(dt: number): void {
        if(Game.I.isGameOver 
            || Game.I.isPause 
            || !this.data 
            || this.isDead) return;
        const targetPos = this.pathList[this.curMoveIndex];
        if(!targetPos)return;
        //保持速度调节逻辑
        //dt = dt / Game.I.map.multiplySpeed();
        const currentPos = this.node.worldPosition.clone();
        const toTarget = targetPos.clone().subtract(currentPos);
        //敌人移动
        const moveDir = new Vec3();
        Vec3.subtract(moveDir, targetPos, currentPos);
        let distance:number = moveDir.length();
        //计算实际应移动距离
        const moveDistance = this.speed * dt;
        if(moveDistance > 0) {
            //使用标准化方向向量 + 实际移动距离
            const newPos = currentPos.add(toTarget.normalize().multiplyScalar(moveDistance));
            this.node.worldPosition = newPos;
            //添加移动平滑过渡 平滑系数 10-15比较好 值越大越平滑
            /*const smoothFactor = 10;
            this.node.worldPosition = Vec3.lerp(
                new Vec3(),
                currentPos,
                newPos,
                Math.min(1, dt * smoothFactor)
            );*/
            //更新方向
            const isLastPathPoint = this.curMoveIndex == this.pathList.length - 1;
            const dirTarget = isLastPathPoint 
                ? Game.I.player.node.worldPosition
                : this.pathList[this.curMoveIndex + 1]; 
            this.updateDir(dirTarget);
        }
        //到达判断增加缓冲范围
        if(moveDistance > distance) {
            //从出生点走到第二个点就是外门第一个点就开门 并且门没有被打开
            if(this.curMoveIndex == 1 
                && !Game.I.buildEnemys.isOpenDoor){
                Game.I.map.openDoor();
                Game.I.buildEnemys.isOpenDoor = true;
            }
            this.curMoveIndex++;
            if (this.curMoveIndex >= this.pathList.length) {
                this.beginFire();
                if(this.isTank()){
                    this.tank_walk.active = false;
                    this.tank_shoot.active = true;
                } else {
                    ResUtil.playSkeletalAnim(this.skeletalAnim, GameEnums.enemyAnimType.shoot, this.data.atk_speed);
                }
                this.updateDir(Game.I.player.node.worldPosition);
            }
        }
    }

    /**
     * 更新敌人方向（根据目标坐标转向）
     * @param targetPos 目标坐标（路径点或玩家坐标）
     */
    public updateDir(targetPos: Vec3){
        const curPos = this.node.worldPosition.clone();
        //从目标位置指向当前位置
        const targetDir = Vec3.subtract(new Vec3(), curPos, targetPos); 
        targetDir.normalize();
        //平滑插值转向 避免瞬间转向
        const currentDir = this.node.forward.clone();
        Vec3.slerp(currentDir, currentDir, targetDir, 0.15);
        this.node.forward = currentDir;
    }
    
    /**
     * 是否是坦克
     */
    public isTank():boolean{
        return this.data.id == GameEnums.enemyType.tank;
    }
}