Input::Keyboard

Keyboard Input Handling in Unified Engine

The Unified Engine provides comprehensive tools for keyboard input management through the KeyboardController class, KeyboardButtonEnums enumeration, and related functionalities.

Keyboard Button Enumeration

A complete set of key enumerations for capturing keyboard inputs, ranging from letters, numbers, and symbols to function keys and more.

enum KeyboardButtonEnums{
        '//Numbers
        Key_0 = GLFW_KEY_0,
        Key_1 = GLFW_KEY_1,
        Key_2 = GLFW_KEY_2,
        Key_3 = GLFW_KEY_3,
        Key_4 = GLFW_KEY_4,
        Key_5 = GLFW_KEY_5,
        Key_6 = GLFW_KEY_6,
        Key_7 = GLFW_KEY_7,
        Key_8 = GLFW_KEY_8,
        Key_9 = GLFW_KEY_9,
        
        //Alphabet
        Key_A = GLFW_KEY_A,
        Key_B = GLFW_KEY_B,
        Key_C = GLFW_KEY_C,
        Key_D = GLFW_KEY_D,
        Key_E = GLFW_KEY_E,
        Key_F = GLFW_KEY_F,
        Key_G = GLFW_KEY_G,
        Key_H = GLFW_KEY_H,
        Key_I = GLFW_KEY_I,
        Key_J = GLFW_KEY_J,
        Key_K = GLFW_KEY_K,
        Key_L = GLFW_KEY_L,
        Key_M = GLFW_KEY_M,
        Key_N = GLFW_KEY_N,
        Key_O = GLFW_KEY_O,
        Key_P = GLFW_KEY_P,
        Key_Q = GLFW_KEY_Q,
        Key_R = GLFW_KEY_R,
        Key_S = GLFW_KEY_S,
        Key_T = GLFW_KEY_T,
        Key_U = GLFW_KEY_U,
        Key_V = GLFW_KEY_V,
        Key_W = GLFW_KEY_W,
        Key_X = GLFW_KEY_X,
        Key_Y = GLFW_KEY_Y,
        Key_Z = GLFW_KEY_Z,
        
        //Numpad
        Key_NP_0 = GLFW_KEY_KP_0,
        Key_NP_1 = GLFW_KEY_KP_1,
        Key_NP_2 = GLFW_KEY_KP_2,
        Key_NP_3 = GLFW_KEY_KP_3,
        Key_NP_4 = GLFW_KEY_KP_4,
        Key_NP_5 = GLFW_KEY_KP_5,
        Key_NP_6 = GLFW_KEY_KP_6,
        Key_NP_7 = GLFW_KEY_KP_7,
        Key_NP_8 = GLFW_KEY_KP_8,
        Key_NP_9 = GLFW_KEY_KP_9,
        Key_NP_ADD = GLFW_KEY_KP_ADD,
        Key_NP_DECIMAL = GLFW_KEY_KP_DECIMAL,
        Key_NP_DIVIDE = GLFW_KEY_KP_DIVIDE,
        Key_NP_ENTER = GLFW_KEY_KP_ENTER,
        Key_NP_EQUAL = GLFW_KEY_KP_EQUAL,
        Key_NP_MULTIPLY = GLFW_KEY_KP_MULTIPLY,
        Key_NP_SUBTRACT = GLFW_KEY_KP_SUBTRACT,
        
        //Fn keys
        Key_F1 = GLFW_KEY_F1,
        Key_F2 = GLFW_KEY_F2,
        Key_F3 = GLFW_KEY_F3,
        Key_F4 = GLFW_KEY_F4,
        Key_F5 = GLFW_KEY_F5,
        Key_F6 = GLFW_KEY_F6,
        Key_F7 = GLFW_KEY_F7,
        Key_F8 = GLFW_KEY_F8,
        Key_F9 = GLFW_KEY_F9,
        Key_F10 = GLFW_KEY_F10,
        Key_F11 = GLFW_KEY_F11,
        Key_F12 = GLFW_KEY_F12,
        
        //Right Side
        Key_RIGHT_ALT = GLFW_KEY_RIGHT_ALT,
        Key_RIGHT_BRACKET = GLFW_KEY_RIGHT_BRACKET,
        Key_RIGHT_CONTROL = GLFW_KEY_RIGHT_CONTROL,
        Key_RIGHT_SHIFT = GLFW_KEY_RIGHT_SHIFT,
        Key_RIGHT_SUPER = GLFW_KEY_RIGHT_SUPER,
        
        //Left Side
        Key_LEFT_ALT = GLFW_KEY_LEFT_ALT,
        Key_LEFT_BRACKET = GLFW_KEY_LEFT_BRACKET,
        Key_LEFT_CONTROL = GLFW_KEY_LEFT_CONTROL,
        Key_LEFT_SHIFT = GLFW_KEY_LEFT_SHIFT,
        Key_LEFT_SUPER = GLFW_KEY_LEFT_SUPER,
        
        //Arrows
        Key_UP = GLFW_KEY_UP,
        Key_DOWN = GLFW_KEY_DOWN,
        Key_LEFT = GLFW_KEY_LEFT,
        Key_RIGHT = GLFW_KEY_RIGHT,
        
        //Functions
        Key_BACKSPACE = GLFW_KEY_BACKSPACE,
        Key_CAPS_LOCK = GLFW_KEY_CAPS_LOCK,
        Key_DELETE = GLFW_KEY_DELETE,
        Key_END = GLFW_KEY_END,
        Key_ENTER = GLFW_KEY_ENTER,
        Key_ESCAPE = GLFW_KEY_ESCAPE,
        Key_HOME = GLFW_KEY_HOME,
        Key_INSERT = GLFW_KEY_INSERT,
        Key_LAST = GLFW_KEY_LAST,
        Key_MENU = GLFW_KEY_MENU,
        Key_PAGE_DOWN = GLFW_KEY_PAGE_DOWN,
        Key_PAGE_UP = GLFW_KEY_PAGE_UP,
        Key_PAUSE = GLFW_KEY_PAUSE,
        Key_TAB = GLFW_KEY_TAB,
        Key_SPACE = GLFW_KEY_SPACE,
        
        //Symbols
        Key_APOSTROPHE = GLFW_KEY_APOSTROPHE,
        Key_BACKSLASH = GLFW_KEY_BACKSLASH,
        Key_COMMA = GLFW_KEY_COMMA,
        Key_EQUAL = GLFW_KEY_EQUAL,
        Key_GRAVE_ACCENT = GLFW_KEY_GRAVE_ACCENT,
        Key_MINUS = GLFW_KEY_MINUS,
        Key_PERIOD = GLFW_KEY_PERIOD,
        Key_SEMICOLON = GLFW_KEY_SEMICOLON,
        Key_FORWARDSLASH = GLFW_KEY_SLASH
};

Keyboard Controller Class

The KeyboardController class serves as the primary tool to interact with keyboard input. It provides functionalities to check for key presses.

class KeyboardController{
private:
    GLFWwindow* window;

public:
    KeyboardController(GLFWwindow* window);
    bool KeyPressed(KeyboardButtonEnums key);
};

Key Callbacks and Global States

The engine provides mechanisms to keep track of the last key pressed and other global keyboard states. Callbacks are used to update these states dynamically.

namespace Keys
{
    extern int LastKeyPressed;
    extern int LastCharecterPressed;
    static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods);
    static void character_callback(GLFWwindow* window, unsigned int codepoint);
}