Messages

1

Graphics / Re: Problem with rotation

« on: December 29, 2015, 10:35:51 pm »

thanks it works , mind explaining a little how does rotate() work?

2

Graphics / Re: Problem with rotation

« on: December 29, 2015, 10:30:25 pm »

check this code :

#include <SFML/Graphics.hpp>

int main()
{
        sf::CircleShape s;
        s.setFillColor(sf::Color::Red);
        s.setRadius(100.f);

        s.setPosition(700.f, 350.f);

        sf::RenderWindow win(sf::VideoMode(1600, 900), "test");

        while (win.isOpen())
        {
                sf::Event e;
                while (win.pollEvent(e))
                {
                        if (e.type == sf::Event::Closed)
                                win.close();
                }


                win.clear();
                s.rotate(1); //rotate 1 degree each iteration
                win.draw(s);
                win.display();
                sf::sleep(sf::seconds(0.01));
        }

        return 0;
}

the circle is indeed rotating but its initial position changes aswell, the question is how do i rotate the circle so the position wont change

3

Graphics / Re: Problem with rotation

« on: December 29, 2015, 10:11:47 pm »

I just gave it ...

just give me an example on how to rotate a circle or rectangle on its standing position like this, the rotate function rotates it in a weird way,  i would be glad if someone explains me how rotate() really works, but first this problem :

http://imgur.com/4qnse4t

4

Graphics / Re: Problem with rotation

« on: December 29, 2015, 09:49:05 pm »

so I have a head of a snake which can pose in 4 different states, with the face up, down, left and right , what I wanted to do is make use of rotations to rotate the head so that it faces the desired directions without changing the position of the head on the screen

I have made a workaround using texture rectangle...

if (mIsMovingUp)
        {
                movement.y -= mPlayerSpeed;
                //how ?
        }
        if (mIsMovingDown)
        {
                movement.y += mPlayerSpeed;
                //how ?
        }
        if (mIsMovingLeft)
        {
                movement.x -= mPlayerSpeed;
                mPlayer[0].setTextureRect(sf::IntRect(64, 0, -32, 32));
                //sprite face left
        }
        if (mIsMovingRight)
        {
                movement.x += mPlayerSpeed;
                mPlayer[0].setTextureRect(sf::IntRect(32, 0, 32, 32));
                //sprite face right
        }

5

Graphics / Problem with rotation

« on: December 29, 2015, 08:35:12 pm »

I have a circle sprite which I try to rotate it accordingly for my game, but I dont seem to understand how SMFL rotation works . I even set the origin of the sprite in the center but always the positions changes when I rotate..