firstsfmlgame/Input.cpp at master · SavvyTechGal/firstsfmlgame · GitHub

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#include "Input.hpp"

void Input::Update()
{
    lastFrameKeys.SetMask(thisFrameKeys); // 1

    thisFrameKeys.SetBit((int)Key::Left,
                         (sf::Keyboard::isKeyPressed(sf::Keyboard::Left)) ||
						 (sf::Keyboard::isKeyPressed(sf::Keyboard::A))); // 2

    thisFrameKeys.SetBit((int)Key::Right,
                         (sf::Keyboard::isKeyPressed(sf::Keyboard::Right)) ||
						 (sf::Keyboard::isKeyPressed(sf::Keyboard::D)));

    thisFrameKeys.SetBit((int)Key::Up,
                         (sf::Keyboard::isKeyPressed(sf::Keyboard::Up)) ||
						 (sf::Keyboard::isKeyPressed(sf::Keyboard::W)));

    thisFrameKeys.SetBit((int)Key::Down,
                         (sf::Keyboard::isKeyPressed(sf::Keyboard::Down)) ||
						 (sf::Keyboard::isKeyPressed(sf::Keyboard::S)));

    thisFrameKeys.SetBit((int)Key::Esc),
		sf::Keyboard::isKeyPressed(sf::Keyboard::Escape);
}

// Return true if the specified key is currently being pressed.
bool Input::IsKeyPressed(Key keycode)
{
    return thisFrameKeys.GetBit((int)keycode);
}

// Returns true if the key was just pressed
// (i.e. registered as pressed this frame but not the previous).
bool Input::IsKeyDown(Key keycode)
{
    bool lastFrame = lastFrameKeys.GetBit((int)keycode);
    bool thisFrame = thisFrameKeys.GetBit((int)keycode);

    return thisFrame && !lastFrame;
}

// Returns true if the key was just released (i.e. registered as
// pressed last frame but not the current frame).
bool Input::IsKeyUp(Key keycode)
{
    bool lastFrame = lastFrameKeys.GetBit((int)keycode);
    bool thisFrame = thisFrameKeys.GetBit((int)keycode);

    return !thisFrame && lastFrame;
}