#pragma once

#include <vector>

#include <QPoint>
#include <QVector2D>

#include "entt/entity/entity.hpp"

class EntityAdmin;

entt::entity entityAtWorldPos(EntityAdmin& admin, QVector2D worldPos);

// Returns the nearest scrap pile whose center is within the scrap pick radius of
// worldPos, or entt::null if none (REQ-UI-SCRAP-CLICK-SELECT). Scrap is picked only
// after actors: entityAtWorldPos never returns scrap (scrap has no HealthComponent).
entt::entity scrapAtWorldPos(EntityAdmin& admin, QVector2D worldPos);

// Returns every scrap pile whose position falls within the inclusive tile rectangle
// spanned by tileA and tileB, in any corner order (REQ-UI-SCRAP-MULTI-SELECT).
std::vector<entt::entity> scrapInBox(EntityAdmin& admin, QPoint tileA, QPoint tileB);

// Returns every living actor (ship or defence station, player or enemy) that falls
// within the inclusive tile rectangle spanned by tileA and tileB, in any corner order
// (REQ-UI-MULTI-SELECT, REQ-UI-ENTITY-CLICK-SELECT). A ship is included when its floored
// position tile lies in the box; a station is included when any of its body cells does.
// Dead actors (hp <= 0) and the HQ proxy are excluded.
std::vector<entt::entity> actorsInBox(EntityAdmin& admin, QPoint tileA, QPoint tileB);