team2_jj/assets/scripts/battle/BulletCreater.ts

import { _decorator, Component, Node, instantiate, Prefab } from 'cc';
import { DataSystem } from '../core/data/DataSystem';
import { ResourceLoader } from '../core/resourceManager/ResourceLoader';
import { BattleData } from './BattleData';
import { Bullet } from './Bullet';
const { ccclass, property } = _decorator;

@ccclass('BulletCreater')
export class BulletCreater extends Component {
    @property({ type: Node, tooltip: "子弹父级" }) bulletLayer: Node;
    @property({ type: Prefab, tooltip: "子弹预制体" }) bulletPrefab:Prefab

    private data: BattleData;
    start() {
        this.data = DataSystem.getData(BattleData);
    }
    update(): void {
        DataSystem.watch(BattleData, "_bullets") && this.createBullet();
    }
    /**生产子弹 */
    private async createBullet() {
        for (let i = 0; i < this.data._bullets.length; i++) {
            let node = instantiate(this.bulletPrefab);
            let bullet = node.getComponent(Bullet);
            node.setParent(this.bulletLayer);
            bullet.setData(this.data._bullets[i]);
        }
        this.data._bullets = [];
    }
}