Messages

1

Window / Re: How to move a rectangle with two clicks in SFML?

« on: August 30, 2021, 05:34:55 pm »

Flags.

Use a flag (boolean value) to represent when something has been selected.

When you click:
if the isSelected boolean is not set, set it, if it's on the shape.
if the isSelected boolean is already set, unset it and move the shape.

This is exactly what I've done, but it still does not work:

void Board::get_click(sf::RenderWindow &window, sf::Event &event)
{
        // get first click
        if (event.type == sf::Event::MouseButtonPressed && mouse_pressed == false)
        {
                if (event.mouseButton.button == sf::Mouse::Left)
                {
                        sf::Vector2i mouse_pos = sf::Mouse::getPosition(window);
                        mouse_pressed = true;

                        for (int i = 0; i < board.size(); i++)
                        {
                                // get position bounds of tile
                                Tile tile = board[i];
                                // check if mouse is within bounds
                                if (mouse_pos.x > tile.top_left().x && mouse_pos.x < tile.top_right().x) {
                                        if (mouse_pos.y > tile.top_left().y && mouse_pos.y < tile.down_left().y) {
                                                // get piece at tile
                                                if (tile.getOccupied() == true)
                                                {
                                                        std::cout << "Valid click!\n";
                                                        piece_index = i;
                                                        break;
                                                }
                                                else
                                                {
                                                        mouse_pressed = false;
                                                        break;
                                                }
                                        }
                                }
                        }
                }
        }

        if (sf::Mouse::isButtonPressed(sf::Mouse::Left) && mouse_pressed == true)
        {
                // move piece
                sf::Vector2i mouse_pos = sf::Mouse::getPosition(window);

                // create new piece with mouse_pos
                Piece moved_piece = board[piece_index].getTilePiece();
                moved_piece.set_position(mouse_pos.x, mouse_pos.y);

                mouse_pressed = false;

                std::cout << "Piece moved!\n";
        }
}

This is the output after 1 CLICK:
Valid click!
Piece moved!

It should be triggering only the first sentence, and the last sentence should be triggered once I make a second click.

2

Window / How to move a rectangle with two clicks in SFML?

« on: August 30, 2021, 04:52:15 pm »

I want to move a rectangle in such a way that the first click selects it and the second click will change its position to wherever the current mouse position is. I've written the code for actually changing the position of the rectangle. The only problem is actually triggering these events because when I try to, it detects more than one click. What would be your approach?