error C2280: attempting to reference a deleted function

c++, compiler-errors, deleted-functions, pointers

Solution

Presumably, either `Pad` or `Ball` (or both) has no default constructor; therefore one can't be generated for a class that contains them. They must be initialised using one of their declared constructors.

The best solution is to remove your weird `init` function, and replace it with a constructor:

ArkanoidGame(int windowWidth, int windowHeight) :
    running(true),
    window(new ...),
    Pad(windowWidth / 2, windowHeight - 50),
    Ball(0,0)
{
    window->setFramerateLimit(60);
}

int main() {
    ArkanoidGame game(800, 600);
    // ...
}

If you really want a two-stage initialisation dance for some reason, then you'll need to provide default constructors for both `Pad` and `Ball`. I wouldn't recommend that though; there's less scope for errors if an object can't be created in an invalid state.

Problem

I'm new to game development and very new to c++, but I've started developing a little Arkanoid game. I've had it running previously, but after refactoring (introducing the ArkanoidGame class) it doesnt compile and I cannot figure out why. The error I'm getting is: ``` d:\dropbox\development\gamedev\c++\arkanoid\arkanoid\main.cpp(14): error C2280: 'ArkanoidGame::ArkanoidGame(void)' : attempting to reference a deleted function d:\dropbox\development\gamedev\c++\arkanoid\arkanoid\arkanoidgame.h(25) : compiler has generated 'ArkanoidGame::ArkanoidGame' here ``` I simply dont understand what this means and have no idea what to do to fix it. I've included the classes in question: Main.cpp: ``` #include "ArkanoidGame.h" int main() { ArkanoidGame game; game.init(800, 600); while (game.isRunning()) { game.checkInput(); game.checkCollisions(); game.draw(); } return 0; } ``` Arkanoid.h: ``` #include "Ball.h" #include "Pad.h" #include <SFML/Graphics.hpp> #include <stdarg.h> #include <memory> class ArkanoidGame { private: bool running; public: void ArkanoidGame::init(int, int); bool ArkanoidGame::isRunning(); void ArkanoidGame::checkCollisions(); void ArkanoidGame::checkInput(); void ArkanoidGame::update(); void ArkanoidGame::draw(); sf::RenderWindow* window; Pad pad; Ball ball; }; ``` ArkanoidGame.cpp: ``` #include "ArkanoidGame.h" void ArkanoidGame::init(int windowWidth, int windowHeight) { window = new sf::RenderWindow(sf::VideoMode(windowWidth, windowHeight), "Arkanoid!"); window->setFramerateLimit(60); ArkanoidGame::running = true; //Init pad pad = Pad((float)(windowWidth / 2), (float)(windowHeight - 50)); //Init ball ball = Ball(0.f, 0.f); } template<class T1, class T2> bool intersect(T1& mA, T2& mB) { return mA.right() >= mB.left() && mA.left() <= mB.right() && mA.bottom() >= mB.top() && mA.top() <= mB.bottom(); } void ArkanoidGame::checkCollisions() { if (!intersect(pad, ball)) return; ball.velocity.y = -ball.ballVelocity; if (ball.x() < pad.x()) { ball.velocity.x = -ball.ballVelocity; } else { ball.velocity.x = ball.ballVelocity; } } void ArkanoidGame::update() { //Update positions pad.update(window->getSize().x); ball.update(window->getSize().x, window->getSize().y); } void ArkanoidGame::draw() { window->clear(Color::Black); window->draw(pad.getShape()); window->draw(ball.getShape()); window->display(); } void ArkanoidGame::checkInput() { if (Keyboard::isKeyPressed(Keyboard::Key::Escape)) { running = false; } } bool ArkanoidGame::isRunning() { return running; } ```

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