yichael_moveordiealone/assets/Scripts/Game/Saw.ts

import EventType from "./EventType";
import Role from "./Role";

const {ccclass, property} = cc._decorator;

@ccclass
export default class Saw extends cc.Component {
    canGet:boolean = true;

    onLoad(){
        this.node.group = EventType.GROUP_OBJECT;
        this.node.getChildByName('Prop').addComponent(Prop).init(this);
    }

    onCollisionStay(other:cc.Collider){
        if(this.canGet){
            let role = other.node.getComponent(Role);
            if(role&&role.pickUpSaw()){
                this.canGet = false;
                window.controller.destroySaw(this.node);
            }         
        }
    }
}

class Prop extends cc.Component {
    parentScript:any;

    init(parentScript:any){
        this.parentScript = parentScript;
        this.node.group = EventType.GROUP_PROP;
    }

    onCollisionStay(other:cc.Collider){
        this.parentScript.onCollisionStay(other);
    }
}