gamepad.hpp

Go to the documentation of this file.

/*
 * 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_INPUT_GAMEPAD_HPP
#define ANTKEEPER_INPUT_GAMEPAD_HPP
 
#include <engine/input/device.hpp>
#include <engine/input/gamepad-events.hpp>
#include <engine/input/gamepad-axis.hpp>
#include <engine/input/gamepad-button.hpp>
#include <engine/event/publisher.hpp>
#include <cstdint>
 
namespace input {
 
enum class gamepad_response_curve: std::uint8_t
{
    linear,
    
    square,
    
    cube
};
 
class gamepad: public device
{
public:
    gamepad();
    
    void set_activation_threshold(gamepad_axis axis, float min, float max);
    
    void set_response_curve(gamepad_axis axis, gamepad_response_curve curve);
    
    void set_left_deadzone_cross(bool cross);
    
    void set_right_deadzone_cross(bool cross);
    
    void set_left_deadzone_roundness(float roundness);
    
    void set_right_deadzone_roundness(float roundness);
    
    void press(gamepad_button button);
    
    void release(gamepad_button button);
    
    void move(gamepad_axis axis, float position);
    
    [[nodiscard]] inline ::event::channel<gamepad_button_pressed_event>& get_button_pressed_channel() noexcept
    {
        return button_pressed_publisher.channel();
    }
    
    [[nodiscard]] inline ::event::channel<gamepad_button_released_event>& get_button_released_channel() noexcept
    {
        return button_released_publisher.channel();
    }
    
    [[nodiscard]] inline ::event::channel<gamepad_axis_moved_event>& get_axis_moved_channel() noexcept
    {
        return axis_moved_publisher.channel();
    }
    
    [[nodiscard]] inline constexpr device_type get_device_type() const noexcept override
    {
        return device_type::gamepad;
    }
    
private:
    void handle_axial_motion(gamepad_axis axis);
    void handle_biaxial_motion(gamepad_axis axis_x, gamepad_axis axis_y);
    float curve_response(gamepad_axis axis, float response) const;
    
    float axis_positions[6];
    float axis_activation_min[6];
    float axis_activation_max[6];
    gamepad_response_curve axis_response_curves[6];
    bool left_deadzone_cross{true};
    bool right_deadzone_cross{true};
    float left_deadzone_roundness{0.0f};
    float right_deadzone_roundness{0.0f};
    
    ::event::publisher<gamepad_button_pressed_event> button_pressed_publisher;
    ::event::publisher<gamepad_button_released_event> button_released_publisher;
    ::event::publisher<gamepad_axis_moved_event> axis_moved_publisher;
};
 
} // namespace input
 
#endif // ANTKEEPER_INPUT_GAMEPAD_HPP