SetOrigin()

float x_t = 200, y_t = 200, w_t = 50, h_t = 100;
RectangleShape t({w_t, h_t});
t.setPosition(x_t, y_t);
t.setOrigin(w_t / 2, h_t / 2);
    
float x_b = 0, y_b = 0, w_b = 50, h_b = 50;
RectangleShape b({ w_b, h_b });
b.setPosition(x_b, y_b);
b.setOrigin(w_b / 2, h_b / 2);
 
if (FloatRect(x_t, y_t, w_t, h_t).intersects(FloatRect(pos.x, pos.y, w_b, h_b)))//pos координаты мыши
    {
        cout << "+";
    }
 
 
window.draw(t);
window.draw(b);