xsdmx-CocosCreator/assets/Script/game/fight/object/PSprite.ts

/**
 * 跟随者
 */
import CMath from "../../../util/CMath";
import FSprite,{SpriteActionType} from "./FSprite";

const {ccclass, property} = cc._decorator;

@ccclass
export default class PSprite extends FSprite {
    /**
     * 是否跟随
     */
    private isFollow = false;
    /**
     * 前面的
     */
    public inFront: FSprite;
    
    public zt:boolean = false//暂停

    /**
     * 行走路径记录
     */
    private PosList: Array<cc.Vec2> = [];
    private RecordGap = 3; //目标移动多远记录一次距离
    private StopCount = 7; //记录还剩多少时停止移动
    private isFloowStart = false;//是否开始跟随
    /**
     * 设置领队
     * @param sprite 
     */
    public setLeader(sprite: FSprite) {
        this.inFront = sprite;

        this.node.x = this.inFront.node.x
        this.node.y = this.inFront.node.y
        this.isFollow = true;
    }
   
    /**
     * 开始跟随
     */
    public startFollow() {
        if (this.isFloowStart) {
            return;
        }
        if (!this.isFollow) {
            this.setShooting(false);
            this.isFloowStart = true;
            this.PosList = [];
            let p1 = this.ff.mainSprite.node.getPosition();
            let pos = cc.v2();
            pos.x = p1.x;
            pos.y = p1.y;
            
            this.playAction(SpriteActionType.run, true);
            cc.tween(this.node).sequence(
                cc.moveTo(0.5, pos),
                cc.callFunc(() => {
                    this.playAction(SpriteActionType.stand, true);
                    this.tmpActionType = null;
                    this.isFollow = true;
                    this.isFloowStart = false;
                })
            ).start()
        }
    }

    /**
     * 结束跟随
     */
    public stopFollow() {
        this.playAction(SpriteActionType.stand, true);
        this.isFollow = false;
    }
   
    public update(dt) {
        if(this.zt){
            return
        }
        if (this.gamePause) {
            return;
        }
        if(!this.inFront){
            return;
        }
        if (this.PosList.length > 0) {
            //跟随
            if (this.isFollow) {
                //添加当前Target位置
                let fp = this.inFront.node.getPosition();
                let lp = this.PosList[this.PosList.length - 1];
                let distance = cc.Vec2.distance(fp, lp);
                
                if(distance > this.RecordGap){
                    this.PosList.push(fp);
                }
                if (this.PosList.length > this.StopCount) {
                    let p0 = this.node.getPosition();
                    let p1 = this.PosList[0];
                    if (this.updateSpineF(p0, p1)) {
                        // cc.log('切换了动作');
                        this.tmpActionType = null;
                    }
                    this.moveTo(p1, dt);
                    this.isWalk = true;

                    this.playAction(SpriteActionType.run, true);
                } 
                else {
                    this.isWalk = this.inFront.isWalk;
                    if (this.isWalk) {
                        this.playAction(SpriteActionType.run, true);
                    } else {
                        this.playAction(SpriteActionType.stand, true);
                    }
                }
                //清除已经到达的点
                while (this.PosList.length > 0) {
                    let distance = cc.Vec2.distance(this.node.getPosition(), this.PosList[0]);
                    
                    if (distance <= this.RecordGap) {
                        this.PosList.shift();
                    } else {
                        break;
                    }
                }
            } else {
                this.tmpActionType = null;
                if (!this.isFloowStart) {
                    this.updateMove(dt)
                }
            }
        } else {
            if (!this.isFloowStart) {
                this.PosList.push(this.inFront.node.getPosition());
            }
        }

    }

    /**
     * 更新跟随角色的方向
     */
    private updateSpineF(p1: cc.Vec2, p2: cc.Vec2): boolean {
        let tmpSpine = this.spine;
        //计算弧度
        // let angle = Math.floor(CMath.getAngle(p1, p2) * (180 / Math.PI));
        // this.updateWeaponAngle(angle);
        let x0 = Math.floor(p1.x);
        let x1 = Math.floor(p2.x);
        if (Math.abs(x0-x1) < 2) {//不改变方向
        } else if (x0 - x1 > 0) {
            this.setLR(-1);
        } else {
            this.setLR(1);
        }
        if (tmpSpine == this.spine) {
            return false;
        } else {
            if (tmpSpine) {
                tmpSpine.node.active = false;
            }
            this.spine.node.active = true;
        }
        return true;
    }
    /**
     * 设置坐标和方向
     */
    public setPosition(pos) {
        this.node.setPosition(pos);
        this.PosList = [];
    }

    public removeSelf() {
        this.playAction2(SpriteActionType.dead, false, () => {
             //替换为幽灵
             this.setGhost();
        });
    }
     /**
     * 死亡后设置为幽灵
     */
    private setGhost() {
        cc.resources.load('prefab/monter/ghost', cc.Prefab, (err, prefab: cc.Prefab) => {
            if (err) {
                cc.error(err);
            } else {
                let node = cc.instantiate(prefab);
                let spine = node.getComponent(sp.Skeleton);
                node.parent = this.node.getChildByName('juese01');
                this.spine.node.active = false;
                this.spine = spine;

                for (let i = 0; i < this.mPanels.length; i++) {
                    const element = this.mPanels[i];
                    element.setClose()
                }
            }
        });
    }

    /**
     * 目标位置的切线方向移动
     * @param target 
     */
    public tangentMove(target:cc.Node){
        let p1 = this.node.getPosition();
        let p2 = target.getPosition();
        let tan = CMath.getAngle(p1,p2);
        let angle = tan*180/Math.PI;

        let rand = CMath.getRandom(0,1);
        if(rand > 0){
            angle += 90
        }else{
            angle -= 90;
        }
        if(angle > 180){
            angle -= 180;
        }
        if(angle < -180){
            angle += 180;
        }
        let dir = this.getDir(angle);

        cc.tween(this.node).sequence(
            cc.delayTime(0.5),
            cc.callFunc(()=>{
                this.setDir(dir);
            })
        ).start();
    }

    private getDir(angle){
        if(angle >= -30 && angle < 30){
            return {x:1.4,y:0}
        }else if(angle >= 30 && angle < 60){
            return {x:1,y:1}
        }else if(angle >= 60 && angle < 120){
            return {x:0,y:1.4}
        }else if(angle >= 120 && angle < 150){
            return {x:-1,y:1}
        }else if(angle >= 150 && angle < 180){
            return {x:-1.4,y:0}
        }else if(angle >= -180 && angle < -150){
            return {x:-1.4,y:0}
        }else if(angle >= -150 && angle < -120){
            return {x:-1,y:-1}
        }else if(angle >= -120 && angle < -60){
            return {x:0,y:-1.4}
        }else if(angle >= -60 && angle < -30){
            return {x:1,y:-1}
        }
    }
}