cube-game-plus-plus/client/input/Keys.h

#ifndef KEYS_H
#define KEYS_H

#include <iostream>
#include <array>

class Keys final {
public:

    class Key final {
    public:
        friend class Keys;

        bool isDown() const;
        bool isReleased() const;
        int getDownTime() const;

    private:
        Key();
        Key(const Key&) = delete;
        Key(Key&&) = delete;
        Key& operator=(const Key&) = delete;
        Key& operator=(Key&&) = delete;

        int glfwKey;
        bool down;
        bool shouldRelease;
        int downTime;
    };

private:
    Key keys[18];

public:
    Keys();
    const Key& left;
    const Key& right;
    const Key& up;
    const Key& down;
    const Key& jump;
    const Key& sneak;
    const Key& camLeft;
    const Key& camRight;
    const Key& camUp;
    const Key& camDown;
    const Key& test;
    const Key& test2;
    const Key& test3;
    const Key& test4;
    const Key& test5;
    const Key& test6;
    const Key& factor;
    const Key& kdTree;

    void release(int key);
    void press(int key);
    void tick();

private:
    Keys(const Keys&) = delete;
    Keys& operator=(const Keys&) = delete;
    Keys(Key&&) = delete;
    Keys& operator=(Keys&&) = delete;
};

std::ostream& operator<<(std::ostream& os, const Keys::Key& k);

#endif