How do I access the address that a member of a class is pointing to while within the class?

Question

input.cpp Function That Has The Error

void Input::isKeyPressed()
{

    if ( sf::Keyboard::isKeyPressed ( sf::Keyboard::S ) )
    {
        // Here's The Error
        *Input::playerOne.move(0.0 ,  1.0);

    }

}

More Details

This function is the implementation of the class Input and the class has a private variable for a pointer to the sf::RectangleShape in the int main() of the program.

I am trying to access that instantiation of sf::RectangleShape in order to move the object down on the screen. I don't want to create a global variables class just to make this work. I just want to be able to access that method for that specific object.

`playerOne->move(0.0 , 1.0);` (And you should consider picking up a [book](http://stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-list).) — molbdnilo, Jun 14 '16 at 11:44
@molbdnilo I would pick up a book but I already have a solid understanding of c++. It's just in terms of classes that I need to get better at. I am nearly 17 and live in the UK. In September, I will be starting my second year in college and will be doing a lot of OOP and so I will be improving my skills then. C++ was my first ever used programming language. I self taught myself and absolutely love the language. Even so, I can understand why people don't recommend C++ as a starting language. — James Yeoman, Jun 25 '16 at 08:54

score 2 · Accepted Answer · answered Jun 14 '16 at 11:44

2

You need the pointer to member operator:

Input::playerOne->move(0.0, 1.0);

The explicit scope resolution Input:: is not required, you can rewrite to

playerOne->move(0.0, 1.0);

answered Jun 14 '16 at 11:44

Bathsheba

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It is in a different file to the class definition. The class definition is in input.h. I'm doing the implementation in input.cpp. – James Yeoman Jun 14 '16 at 11:48
1

That doesn't matter. The *preprocessor* substitutes the contents of `input.h` for `#include.h`, and the *compiler* compiles the single file. – Bathsheba Jun 14 '16 at 11:50
Then the code::blocks IDE autocompete/suggest is total bollocks – James Yeoman Jun 14 '16 at 11:55

How do I access the address that a member of a class is pointing to while within the class?

1 Answers1