_Aliens/assets/module_aliens/Script/Components/GunComponent.ts

import { _decorator, Animation, AnimationClip, AnimationState, Component, Node } from 'cc';
import { EventDispatcher } from 'db://assets/core_tgx/easy_ui_framework/EventDispatcher';
import { GameEvent } from '../Enum/GameEvent';
const { ccclass, property } = _decorator;

@ccclass('GunComponent')
export class GunComponent extends Component {

    gunAnimation: Animation = null!;

    start() {
        this.gunAnimation = this.node.getComponent(Animation)!;

        EventDispatcher.instance.on(GameEvent.EVENT_PLAY_GUN_ANIMATION,this.playGunAnimation,this);
    }

    playGunAnimation(){
        if(!this.gunAnimation){
            return;
        }
        this.gunAnimation.play();
    }
}