import { Vector3, Script, MeshRenderer, StaticCollider, BoxColliderShape } from "oasis-engine";
import { PaladinAdapter } from "../adapter/PaladinAdapter";

export class GlTFCollider extends Script {
  private _tempVec30: Vector3 = new Vector3();
  private _tempVec31: Vector3 = new Vector3();

  onStart(): void {
    const renderers = this.entity.getComponentsIncludeChildren(MeshRenderer, []);
    for (let i = renderers.length - 1; i >= 0; i--) {
      this._addBoundingBox(renderers[i]);
    }
  }

  private _addBoundingBox(renderer: MeshRenderer): void {
    const { _tempVec30: localSize, _tempVec31: localPosition } = this;
    // Calculate the position and size of the collider.
    const boundingBox = renderer.mesh.bounds;
    const entity = renderer.entity;
    boundingBox.getCenter(localPosition);
    Vector3.subtract(boundingBox.max, boundingBox.min, localSize);
    // Add collider.
    const boxCollider = entity.addComponent(StaticCollider);
    const boxColliderShape = new BoxColliderShape();
    boxColliderShape.setPosition(localPosition.x, localPosition.y, localPosition.z);
    boxColliderShape.setSize(localSize.x, localSize.y, localSize.z);
    boxCollider.addShape(boxColliderShape);
    // Add click script.
    entity.addComponent(Script).onPointerClick = () => {
      PaladinAdapter.toast("Click:" + entity.name);
    };
  }
}