input-manager.hpp

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/*
 * Copyright (C) 2023  Christopher J. Howard
 *
 * This file is part of Antkeeper source code.
 *
 * Antkeeper source code is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Antkeeper source code is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Antkeeper source code.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef ANTKEEPER_APP_INPUT_MANAGER_HPP
#define ANTKEEPER_APP_INPUT_MANAGER_HPP
 
#include <engine/input/device.hpp>
#include <engine/input/gamepad.hpp>
#include <engine/input/keyboard.hpp>
#include <engine/input/mouse.hpp>
#include <engine/event/dispatcher.hpp>
#include <map>
#include <memory>
#include <unordered_set>
 
namespace app {
 
class input_manager
{
public:
    static std::unique_ptr<input_manager> instance();
 
    virtual ~input_manager() = default;
    
    virtual void update() = 0;
    
    virtual void set_cursor_visible(bool visible) = 0;
    
    virtual void set_relative_mouse_mode(bool enabled) = 0;
    
    [[nodiscard]] inline const ::event::dispatcher& get_event_dispatcher() const noexcept
    {
        return m_event_dispatcher;
    }
    [[nodiscard]] inline ::event::dispatcher& get_event_dispatcher() noexcept
    {
        return m_event_dispatcher;
    }
    
    [[nodiscard]] inline const std::unordered_set<input::gamepad*>& get_gamepads() noexcept
    {
        return m_gamepads;
    }
    
    [[nodiscard]] inline const std::unordered_set<input::keyboard*>& get_keyboards() noexcept
    {
        return m_keyboards;
    }
    
    [[nodiscard]] inline const std::unordered_set<input::mouse*>& get_mice() noexcept
    {
        return m_mice;
    }
    
protected:
    void register_device(input::device& device);
    void register_gamepad(input::gamepad& device);
    void register_keyboard(input::keyboard& device);
    void register_mouse(input::mouse& device);
    
    void unregister_device(input::device& device);
    void unregister_gamepad(input::gamepad& device);
    void unregister_keyboard(input::keyboard& device);
    void unregister_mouse(input::mouse& device);
    
    ::event::dispatcher m_event_dispatcher;
    
private:
    std::multimap<input::device*, std::shared_ptr<::event::subscription>> m_subscriptions;
    std::unordered_set<input::gamepad*> m_gamepads;
    std::unordered_set<input::keyboard*> m_keyboards;
    std::unordered_set<input::mouse*> m_mice;
};
 
} // namespace app
 
#endif // ANTKEEPER_APP_INPUT_MANAGER_HPP