pass class object into function argument | Together C & C++ | Page 1

stuck shoal Nov 11, 2024, 5:58 PM

#

#include "stdafx.h"
#include "Game.h"
#include "Deck.h"
#include "Hand.h"
#include "Text.h"

#include <iostream>
#include <ctime>

//Privates
void Game::initVariables()
{
    this->window = nullptr;

    Deck basicDeck;
    Hand playersHand;
    Hand dealersHand;
    TextObject startText(consolasFont, this->window, 16, L"Start");

}

void Game::initWindow()
{
    this->videoMode.width = 800;
    this->videoMode.height = 600;
    this->window = new sf::RenderWindow(this->videoMode, "Blackjack in C++", sf::Style::Titlebar | sf::Style::Close);
    this->window->setFramerateLimit(75);
}

void Game::initFonts()
{
    if (!this->consolasFont.loadFromFile("fonts/Consolas.ttf"))
    {
        sf::err() << "ERROR::GAME::INITFONTS:: failed to load font! \n";
    }
}

void Game::initText()
{
}

void Game::initButtons()
{
    /*
    this->button.setFillColor(sf::Color(255, 255, 255));
    this->button.setCharacterSize(16);
    this->button.setFont(this->consolasFont);
    this->button.setPosition((this->window->getSize().x - 20.f), (this->window->getSize().y - 20.f));
    */
}



//Constructors
Game::Game()
{
    this->initVariables();
    this->initWindow();
    this->initFonts();
    this->initText();
}

Game::~Game()
{
    delete this->window;
}

//Accessors 

const bool Game::running() const
{
    return this->window->isOpen();
}

//Functions


void Game::pollEvents()
{
    //Event polling
    while (this->window->pollEvent(this->ev))
    {
        switch (this->ev.type)
        {
        case sf::Event::Closed:
            this->window->close();
            break;
        case sf::Event::KeyPressed:
            if (this->ev.key.code == sf::Keyboard::Escape)
                this->window->close();
            break;
        }
    }
}

void Game::updateMousePos()
{
    this->mousePosWindow = sf::Mouse::getPosition(*this->window);
    this->mousePosView = this->window->mapPixelToCoords(this->mousePosWindow);
}



void Game::update()
{

    this->pollEvents();

    this->updateMousePos();

    this->updateText();
}

void Game::updateText()
{
    
}


void Game::renderText(sf::RenderTarget& target)
{
    target.draw();
}

void Game::render()
{
    this->window->clear(sf::Color(20, 20, 20));

    this->renderText(*this->window);

    //LAST
    this->window->display();
}```



in Game.cpp, in `initVariables()` i create `TextObject startText` how do i pass it as an argument in `renderText` in `target.draw();`?

jovial oarBOT Nov 11, 2024, 5:58 PM

#

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median shuttle Nov 11, 2024, 6:02 PM

#

can't you change your renderText function to take the text as argument?

stuck shoal Nov 11, 2024, 6:04 PM

#

okay that could work but i have to fix something else

#

TextObject::TextObject(sf::Font font, sf::RenderWindow* window, int characterSize, std::wstring caption)
{
    stringStream << caption;
    this->uiText.setString(stringStream.str());
    this->uiText.setCharacterSize(characterSize);
    this->uiText.setFont(font);
    centerTextOrigin();
    centerTextPosition(window);


}

void TextObject::centerTextOrigin()
{
    this->uiText.setOrigin(static_cast<int>(this->uiText.getLocalBounds().getSize().x / 2.f + this->uiText.getLocalBounds().getPosition().x),
        static_cast<int> (this->uiText.getLocalBounds().getSize().y / 2.f + this->uiText.getLocalBounds().getPosition().y));
}

void TextObject::centerTextPosition(sf::RenderWindow *window)
{
    this->uiText.setPosition(static_cast<int> (window->getSize().x / 2.f), static_cast<int>(window->getSize().y / 2.f));
}

the window is nullptr

#

#include "stdafx.h"
#pragma once

class TextObject
{
public:
    sf::Text uiText;
    std::wstringstream stringStream;

    TextObject(sf::Font font, sf::RenderWindow* window, int characterSize = 12, std::wstring caption = L"");

    void centerTextOrigin();
    void centerTextPosition(sf::RenderWindow* window);
private:

};```

median shuttle Nov 11, 2024, 6:08 PM

#

yeah you need to initialize window with an actual window before you can draw anything

#

I'm honestly not sure what initVariables is supposed to do

#

because all local variables of that function are going to be destroyed when you leave the function

stuck shoal Nov 11, 2024, 6:11 PM

#

void Game::initVariables()
{
    this->window = nullptr;

    Deck basicDeck;
    Hand playersHand;
    Hand dealersHand;
    TextObject startText(consolasFont, this->window, 16, L"Start");

}

#

@median shuttle

median shuttle Nov 11, 2024, 6:11 PM

#

yeah but what's the purpose of this function?

#

like, I get that you want to have a Deck object, and Hands and so on

#

But they should either be member variables of Game, or you should be creating them as local variables in a function where you actually use them

stuck shoal Nov 11, 2024, 6:15 PM

#

#include "stdafx.h"
#include "Game.h"
#include "Deck.h"
#include "Hand.h"
#include "Text.h"

#include <iostream>
#include <ctime>

//Privates
void Game::initVariables()
{
    this->window = nullptr;

    Deck basicDeck;
    Hand playersHand;
    Hand dealersHand;
    TextObject startText(consolasFont, this->window, 16, L"Start");

}

void Game::initWindow()
{
    this->videoMode.width = 800;
    this->videoMode.height = 600;
    this->window = new sf::RenderWindow(this->videoMode, "Blackjack in C++", sf::Style::Titlebar | sf::Style::Close);
    this->window->setFramerateLimit(75);
}

void Game::initFonts()
{
    if (!this->consolasFont.loadFromFile("fonts/Consolas.ttf"))
    {
        sf::err() << "ERROR::GAME::INITFONTS:: failed to load font! \n";
    }
}

void Game::initText()
{
}

void Game::initButtons()
{
    /*
    this->button.setFillColor(sf::Color(255, 255, 255));
    this->button.setCharacterSize(16);
    this->button.setFont(this->consolasFont);
    this->button.setPosition((this->window->getSize().x - 20.f), (this->window->getSize().y - 20.f));
    */
}



//Constructors
Game::Game()
{
    this->initVariables();
    this->initWindow();
    this->initFonts();
    this->initText();
}

Game::~Game()
{
    delete this->window;
}

//Accessors 

const bool Game::running() const
{
    return this->window->isOpen();
}

//Functions


void Game::pollEvents()
{
    //Event polling
    while (this->window->pollEvent(this->ev))
    {
        switch (this->ev.type)
        {
        case sf::Event::Closed:
            this->window->close();
            break;
        case sf::Event::KeyPressed:
            if (this->ev.key.code == sf::Keyboard::Escape)
                this->window->close();
            break;
        }
    }
}

void Game::updateMousePos()
{
    this->mousePosWindow = sf::Mouse::getPosition(*this->window);
    this->mousePosView = this->window->mapPixelToCoords(this->mousePosWindow);
}



void Game::update()
{

    this->pollEvents();

    this->updateMousePos();

    this->updateText();
}

void Game::updateText()
{
    
}


void Game::renderText(sf::RenderTarget& target, sf::Text text)
{
    target.draw(text);
}

void Game::render()
{
    this->window->clear(sf::Color(20, 20, 20));

    this->renderText(*this->window, uiText);

    //LAST
    this->window->display();
}

#

i guess the whole thing would be more useful then

#

I'm in the process of moving Text based stuff to it's own class

#

@median shuttle

median shuttle Nov 11, 2024, 6:22 PM

#

I'm not really sure what you're trying to say, to be honest

stuck shoal Nov 11, 2024, 6:25 PM

#

hmm

#

before i would declare sf::Text uiText in the 'Game.h' file

#

and that was really simple

#

everything was handled within the game itself

#

but i'm working on making text objects their own thing

#

so that i can easily and quickly define however many textObjects i want

median shuttle Nov 11, 2024, 6:29 PM

#

ok

#

but what is your question?

stuck shoal Nov 11, 2024, 6:30 PM

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well you solved my original issue with the parameters

median shuttle Nov 11, 2024, 6:30 PM

#

oh nice

stuck shoal Nov 11, 2024, 6:31 PM

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now i get an error from CenterTextPosition() not recognizing what 'window' is

median shuttle Nov 11, 2024, 6:32 PM

#

you mean it doesn't know what a sf::RenderWindow is?

#

that means you're missing includes

stuck shoal Nov 11, 2024, 6:32 PM

#

no no the includes are fine

#

i just keep mixing up referencing derefrencing and pointers

median shuttle Nov 11, 2024, 6:34 PM

#

ah gotcha

#

that's just something that comes with practice I guess

stuck shoal Nov 11, 2024, 6:38 PM

#

i guess i'll just try it myself

#

!solved

#pass class object into function argument