Fortunately, two days ago I made an example for an reallife friend about the exact same topic
Heres the Code, I hope it can help you.
#include <iostream>
#include <cmath>
#include <SFML/Graphics/RenderWindow.hpp>
#include <SFML/Graphics/RectangleShape.hpp>
#include <SFML/Window/Event.hpp>
#include <SFML/System/Vector2.hpp>
const float PI = 3.14159265359f;
float ComputeAngle(sf::Vector2f point1, sf::Vector2f point2)
{
return std::atan2((point2.x - point1.x), (point2.y - point1.y)) * (180/PI);
// std::atan2() returns RAD but you need DEG for SFML so *(180/PI) to convert it.
}
int main()
{
sf::RenderWindow window(sf::VideoMode(800,600), "Atan2 Test");
window.setVerticalSyncEnabled(true);
sf::RectangleShape rect; // Your spacehip
rect.setSize(sf::Vector2f(50,20));
rect.setFillColor(sf::Color::Green);
rect.setOrigin(rect.getLocalBounds().width / 2.f, rect.getLocalBounds().height / 2.f); // Its important that the origin is in the middle of the sprite
rect.setPosition(400,300);
while(window.isOpen())
{
sf::Event event;
while(window.pollEvent(event))
{
if(event.type == sf::Event::Closed)
{
window.close();
}
}
float rotAngle = ComputeAngle(rect.getPosition(), static_cast<sf::Vector2f>(sf::Mouse::getPosition(window)));
// std::cout << rotAngle << std::endl;
rect.setRotation(90-rotAngle); // "90-" Depends on how your Spaceshape is rotated by default
window.clear(sf::Color(0,0,173));
window.draw(rect);
window.display();
}
return 0;
}
AlexAUT
