sanguozhanji/assets/scripts/other/item/Bullet.ts

import WealthMng from "../../manager/WealthMng";
import Random from "../../utils/Random";

const { ccclass, property } = cc._decorator;

@ccclass
export default class Bullet extends cc.Component {

    target: cc.Node = null;
    bulletSpeed: number = 1500;
    masterlv: number = 1;

    onLoad() {

    }

    update(dt) {
        if (this.target != null) {
            let targetPos: cc.Vec2 = cc.v2(this.target.getPosition().x,this.target.getPosition().y-80);// this.target.getPosition();
            let bulletPos: cc.Vec2 = this.node.getPosition();
            let normalizeVec: cc.Vec2 = targetPos.subtract(bulletPos).normalize();

            this.node.x += normalizeVec.x * this.bulletSpeed * dt;
            this.node.y += normalizeVec.y * this.bulletSpeed * dt;
            // 角度变化以y轴正方向为起点，逆时针角度递增
            //this.node.angle = cc.v2(0, 1).signAngle(normalizeVec) * 180 / Math.PI;
            this.node.angle += 10;

            let rect = this.target.getBoundingBox();
            //let len = this.target.getPosition().sub(this.node.getPosition()).len();
            let len = cc.v2(this.target.getPosition().x,this.target.getPosition().y-80).sub(this.node.getPosition()).len();
            //console.log("Len:"+len);

            if (len <= 50) {
                this.HitTheTarget();
                WealthMng.Ins.GetDamage(1, this.masterlv);
                WealthMng.Ins.ShootEft(this.node.getPosition());
            }
            //if (rect.contains(bulletPos)) this.HitTheTarget();
            //this.node.lookAt(this.target.position);
            //this.node.setPosition(this.node.right.scale(cc.v3(1, 2, 1)));
        } else {
            this.HitTheTarget();
        }
    }

    Shoot(target: cc.Node, masterlv: number) {
        this.masterlv = masterlv;
        this.node.angle = Random.Range(0, 360);
        this.target = target;
    }

    HitTheTarget() {
        this.node.destroy();
        this.destroy();
    }
}