SFML - Cannot modify object in window - c++

Question

I am new to SFML and C++ in general.
I am building the Conway's Game of life for a school project.
As base objects for my grid, I have Squares (which are sf::RectangleShape as for base).
The grid is a std::vector<std::vector<Square>> (vector of vectors of Squares).
What I am trying to do at the moment is to change the color of a square when I hover over it with the cursor.
My way of doing it (see code below):
I get the position of cursor when I move it
I iterate through my matrix and check for each square if cursor's position is in the square's boundaries.
When the square under the cursor is found, I want to change its color (.setFillColor(...)).
Point 3 does not work I can't understand why. This is the function "mouseHover" in the code below.
Can you see what is wrong?
int main()
{
int width;
int height;
int numberSquareWidth = 15;
int numberSquareHeight = 15;
int squareSize = 20;
int offset = 1;
initializeWindowGridValues(width, height, numberSquareWidth, numberSquareHeight, squareSize, offset);
sf::RenderWindow window(sf::VideoMode(width, height), "Stephan's Game Of Life!");
std::vector<std::vector<Square>> matrix(numberSquareWidth, std::vector<Square>(numberSquareHeight));
initiatlizeGrid(numberSquareWidth, numberSquareHeight, squareSize, offset, matrix);
sf::Vector2i cursorPos;
while (window.isOpen())
{
sf::Event event;
while (window.pollEvent(event))
{
if (event.type == sf::Event::Closed)
window.close();
if (event.type == sf::Event::MouseMoved)
{
cursorPos = sf::Mouse::getPosition(window);
}
}
mouseHover(matrix, cursorPos, squareSize, offset); // Problem here
window.clear(sf::Color::Black);
drawGrid(window, matrix);
window.display();
}
return 0;
}
void mouseHover(std::vector<std::vector<Square>> &matrix, const sf::Vector2i &cursorPos, const int &squareSize, const int &offset)
{
int rowIndex = floor((cursorPos.x - (offset * floor(cursorPos.x / squareSize))) / squareSize);
int colIndex = floor((cursorPos.y - (offset * floor(cursorPos.y / squareSize))) / squareSize);
matrix[rowIndex][colIndex].setFillColor(sf::Color::Blue); // This does not happen.
}
void drawGrid(sf::RenderWindow &window, const std::vector<std::vector<Square>> &matrix)
{
for (const auto &vector : matrix)
{
for (const auto &square : vector)
{
window.draw(square);
}
}
}
void initiatlizeGrid(const int &numberSquareWidth, const int &numberSquareHeight, const int &squareSize, const int &offset, std::vector<std::vector<Square>> &matrix)
{
int previousY = 0;
for (size_t row = 0; row < numberSquareWidth; row++)
{
int offsetv;
if (row == 0)
{
offsetv = 0;
}
else
{
offsetv = offset;
}
int previousX = 0;
for (size_t col = 0; col < numberSquareHeight; col++)
{
int offseth;
if (col == 0)
{
offseth = 0;
}
else
{
offseth = offset;
}
Square square(squareSize);
square.setPosition(previousX + offseth, previousY + offsetv);
matrix[row][col] = square;
previousX = previousX + squareSize + offseth;
}
previousY = previousY + squareSize + offsetv;
}
}
void initializeWindowGridValues(int &width, int &height, int &nuberSquareWidth, int &nuberSquareHeight, int &squareSize, const int &offset)
{
if (nuberSquareWidth * squareSize + offset * (nuberSquareWidth - 1) > 1800 || nuberSquareHeight * squareSize + offset * (nuberSquareHeight - 1) > 900)
{
nuberSquareWidth = floor(1600 / squareSize);
nuberSquareHeight = floor(900 / squareSize);
width = ceil(nuberSquareWidth * squareSize + offset * (nuberSquareWidth - 1));
height = ceil(nuberSquareHeight * squareSize + offset * (nuberSquareHeight - 1));
}
else if (nuberSquareWidth < 5 || nuberSquareHeight < 5)
{
nuberSquareWidth = 5;
nuberSquareHeight = 5;
width = ceil(nuberSquareWidth * squareSize + offset * (nuberSquareWidth - 1));
height = ceil(nuberSquareHeight * squareSize + offset * (nuberSquareHeight - 1));
}
else
{
width = ceil(nuberSquareWidth * squareSize + offset * (nuberSquareWidth - 1));
height = ceil(nuberSquareHeight * squareSize + offset * (nuberSquareHeight - 1));
}
}

Answer 1

The problem was that I have both inherited the RectangleShape (my square IS A RectangleShape) and made a RectangleShape (square) a member of myclass. When I modify data, I modify class member variables, but inside the draw method I draw the other rectangle.
I removed the class member RectangleShape and continue from here.