the-world-engine/dist/esm/engine/script/physics2d/ObjectAttacher2D.js

three.js based, unity like game engine for browser

import { Component } from "../../hierarchy_object/Component";

export class ObjectAttacher2D extends Component {
    bo=null;
    set target(t) {
        this.bo = t;
        t.transform.localPosition.x = this.transform.position.x;
        t.transform.localPosition.y = this.transform.position.y;
        t.transform.localEulerAngles.z = this.transform.eulerAngles.z;
    }
    onWorldMatrixUpdated() {
        const t = this.bo.transform;
        t.localPosition.x = this.transform.position.x;
        t.localPosition.y = this.transform.position.y;
        t.localEulerAngles.z = this.transform.eulerAngles.z;
    }
}