static void fill_shape(sf::RenderTarget& target, sf::Shape& shape, int x, int y, sf::Color colour) {
shape.setPosition(x, y);
shape.setFillColor(colour);
setActiveRenderTarget(target);
target.draw(shape);
}
static void frame_shape(sf::RenderTarget& target, sf::Shape& shape, int x, int y, sf::Color colour) {
shape.setPosition(x, y);
shape.setOutlineColor(colour);
shape.setFillColor(sf::Color::Transparent);
// TODO: Determine the correct outline value; should be one pixel, not sure if it should be negative
shape.setOutlineThickness(-1.0);
target.draw(shape);
}