@phaserjs/phaser/display/AddChildBefore.js

Phaser 4

import { GetParentGameObject } from "../components/hierarchy/GetParentGameObject";
import { GetPreviousSiblingID } from "../components/hierarchy/GetPreviousSiblingID";
import { IsValidParent } from "./IsValidParent";
import { LinkSiblings } from "../components/hierarchy/LinkSiblings";
import { RemoveChildIDFromCurrentParent } from "../components/hierarchy/RemoveChildIDFromCurrentParent";
import { SetAndUpdateParent } from "../components/hierarchy/SetAndUpdateParent";
import { SetFirstChildID } from "../components/hierarchy/SetFirstChildID";
import { SetNextSiblingID } from "../components/hierarchy/SetNextSiblingID";
import { SetPreviousSiblingID } from "../components/hierarchy/SetPreviousSiblingID";
export function AddChildBefore(before, child) {
  const beforeID = before.id;
  const childID = child.id;
  const parent = GetParentGameObject(beforeID);
  const parentID = parent.id;
  if (IsValidParent(parent, child)) {
    RemoveChildIDFromCurrentParent(childID, parentID);
    const prevID = GetPreviousSiblingID(beforeID);
    if (prevID !== 0) {
      SetNextSiblingID(prevID, childID);
    } else {
      SetFirstChildID(parentID, childID);
    }
    LinkSiblings(childID, beforeID);
    SetPreviousSiblingID(childID, prevID);
    SetAndUpdateParent(parentID, childID);
    parent.onAddChild(childID);
  }
  return child;
}