Interaction.h

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// SPDX-FileCopyrightText: 2026 Valentin Eloy
// SPDX-License-Identifier: GPL-3.0-or-later
 
#pragma once

 
#include <string>
#include <string_view>
#include <vector>
 
#include "Core/Ecs/Components/Interactable.h"
#include "Core/Levels/GridPosition.h"
#include "Core/Math/Vector2.h"
 
namespace core {
 
class TileMap;
class WorldFlags;

struct InteractionCandidate {
    const Interactable* interactable = nullptr;
    std::size_t index = 0;
};

struct InteractionTarget {
    const Interactable* interactable = nullptr;
    std::size_t index = 0;
    GridPosition aimedCell;
    [[nodiscard]] bool found() const {
        return interactable != nullptr;
    }
};

[[nodiscard]] GridPosition aimedCell(GridPosition from, Vector2 facing);

[[nodiscard]] InteractionTarget findInteractionTarget(
    GridPosition from, Vector2 facing, const TileMap& map,
    const std::vector<InteractionCandidate>& candidates, const WorldFlags& flags);

struct InteractionOutcome {
    bool happened = false;
    bool consumed = false;
    std::string type;
    std::string promptKey;
};

InteractionOutcome interact(const InteractionTarget& target, WorldFlags& flags);
 
}  // namespace core