laya 武器旋转砍怪判断

typescript代码:

export interface IMonster extends Laya.Node {
    id: number;
    isDie:boolean;
    getPoint(): Laya.Point;
    getHitRect():Laya.Rectangle;
}

export class Monster extends Laya.Sprite implements IMonster {
    private _isDie: boolean;
    private _id: number;
    constructor(id: number) {
        this._id = id;
    }
    
    public get isDie(): boolean {
        return this._isDie;
    }
    
    getPoint(): Laya.Point {
        return new Laya.Point(this.x, this.y);
    }
    
    getHitRect(): Laya.Rectangle {
        // 固定为原始矩形
        //let x = this.x - this.width * this.anchorX;
        //let y = this.y - this.height * this.anchorY;
        //return new Laya.Rectangle(x , y, this.width, this.height);
        
        // 动态的边界
        return this.getBounds();
    }
}

export class Player {
    let monsterIds: number[] = [];
    // 检查圆圈是否击中怪物(武器绕着玩家旋转, 空心圆圈)
    checkCircleHitMonsters() {
        for (let monsterId in monsterList) {
            let monster: IMonster = monsterList[monsterId];
            let pos: Laya.Point = monster.getPoint();
            // 计算玩家中心点与怪物中心点之间的夹角
            let hitAngle = Math.atan2(this.y - pos.y, this.x - pos.x);
            let halfWidth = this.width * 0.5;
            let halfHeight = this.height * 0.5;
            // 玩家中心点与怪物中心点之间的连线与玩家的边框矩形相交点(武器转圈, 击中怪物的点)
            let hitPoint = new Laya.Point();
            hitPoint.x = this.x - halfWidth * Math.cos(hitAngle);
            hitPoint.y = this.y - halfHeight * Math.sin(hitAngle);

            if (!monster.isDie) {
                if (monster.getHitRect().contains(hitPoint.x, hitPoint.y)) {
                    // if (this.hitTestPoint(hitPoint.x, hitPoint.y)) {
                    monsterIds.push(monster.id); //所有的的被攻击到的id
                    //播放受击动画什么的
                    this._monsterCtrl.hitMonster(monster.id, this, hitPoint, hitAngle);
                }
                else {
                    //停止播放受击动画
                    this._monsterCtrl.outHitMonster(monster.id);
                }
            }
        }
    }
    
    // 如果是实心圆圈的符文, 只要使用符文hitTestPoint(怪物坐标)来检测
    // 如果是激光, 一根或多根时, 可以额外放对应数量的条状图对应相应的激活, 条隐藏, 不显示(如果激光旋转, 可以在onframe里面把条跟随旋转), 然后使用这些条来检测与怪物的碰撞
    // 子弹类就是每帧检测判断有没击中怪
}