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Graphics / Help with sf::View and Origin

« on: November 17, 2019, 03:40:03 am »

I am making this small project/game and I ran into a problem. I need my sprite(player) to rotate with mouse cursor. So where cursor is in window there my sprite rotates, and I got it to work. But now I need a View to follow my sprite, and when I set a View it seems that my Origin resets to 0,0.

Main:

#include <iostream>
#include "SFML/Graphics.hpp"

#include "Player.h"

int main()
{
        sf::RenderWindow window(sf::VideoMode(1024, 768), "Game");
        sf::Event sfEvent;

        Player* player = new Player("soldier.png");

               
        sf::View camera;
        camera.setSize(sf::Vector2f(1024, 768));

        while (window.isOpen())
        {
                while (window.pollEvent(sfEvent))
                {
                        if (sfEvent.type == sf::Event::EventType::Closed)
                        {
                                window.close();
                        }
                }
                player->movement();

                player->facingDirection(window);

                player->setOrigin();

                camera.setCenter(player->getOrigin());

                window.clear();

                window.setView(camera);

                player->draw(window);

                window.display();

        }
}
 

Player.cpp:

#include "Player.h"

Player::Player(std::string textureName)
{
        _texture = new sf::Texture;
        _texture->loadFromFile(P_TEX_PATH + textureName);

        _sprite = new sf::Sprite(*_texture);


}

Player::~Player()
{
        delete _texture;
        delete _sprite;
}

void Player::movement()
{
        if (sf::Keyboard::isKeyPressed(sf::Keyboard::Key::A))
        {
                _sprite->move(-_speed, 0.0f);
        }
        if (sf::Keyboard::isKeyPressed(sf::Keyboard::Key::D))
        {
                _sprite->move(_speed, 0.0f);
        }
        if (sf::Keyboard::isKeyPressed(sf::Keyboard::Key::W))
        {
                _sprite->move(0.0f, -_speed);
        }
        if (sf::Keyboard::isKeyPressed(sf::Keyboard::Key::S))
        {
                _sprite->move(0.0f, _speed);
        }
}
void Player::facingDirection( sf::RenderWindow &window)
{
        mousePosition = sf::Mouse::getPosition(window);
        _spritePosition = _sprite->getPosition();

        float dx = mousePosition.x - _spritePosition.x;
        float dy = mousePosition.y - _spritePosition.y;

        _rotation = (atan2(dy, dx)) * 180 / 3.14159265 ;

        _sprite->setRotation(_rotation);

}

sf::Vector2f Player::getLocation()
{
        return _sprite->getPosition();
}

sf::Vector2f Player::getOrigin()
{
        return _sprite->getOrigin();
}

float Player::getSpriteOrientation()
{
        return _sprite->getRotation();
}

void Player::setOrigin()
{
        _scaleW = _sprite->getLocalBounds().width;
        _scaleH = _sprite->getLocalBounds().height;
        _scaleW = _scaleW / 2;
        _scaleH = _scaleH / 2;
        _sprite->setOrigin(_scaleH,_scaleW - 4.f);
}

void Player::draw(sf::RenderTarget& window)
{
        window.draw(*_sprite);
}
 

Player.h

#pragma once
#include <iostream>
#include <string>
#include "SFML/Graphics.hpp"

#define P_TEX_PATH "textures\\player\\"


class Player
{
public:
        Player(std::string textureName);
        ~Player();

        void draw(sf::RenderTarget& window);
        void movement();
        void facingDirection(sf::RenderWindow &window);
        sf::Vector2f getLocation();
        sf::Vector2f getOrigin();
        float getSpriteOrientation();
        void setOrigin();
        sf::Vector2i mousePosition;

       
private:
        sf::Sprite* _sprite;
        sf::Texture* _texture;
        float _size = 20.f;
        float _speed = 0.020f;
        sf::Vector2f _spritePosition;
        float _rotation = 0;
        float _scaleW = 0;
        float _scaleH = 0;
        float _locationX = 0;
        float _locationY = 0;

       
};
 

Any feedback about the rest of the code would be helpfull, ty