Messages

1

General / Re: Unable to initialize a reference of type....

« on: April 19, 2020, 10:26:17 am »

You're right, I know c very well, but c ++ not too much, I will try to do simple things without SFML, and when I know this language better I will try to use SFML.
Have a nice day 

2

General / Unable to initialize a reference of type....

« on: April 19, 2020, 09:18:03 am »

Hello,
i am having problems with this program,
it gives me three errors related to the "Draw" function,
unable to initialize a reference of type "sf :: Sprite &" (not qualified by const) with a value of type "sf :: RenderWindow",E0434 unable to initialize a reference of type "int &" (not qualified by const) with a value of type "sf :: Sprite",E0434 unable to initialize a reference of type "sf :: RenderWindow &" (not qualified by const) with a value of type "int",   and I don't know why,sorry for the inconvenience.

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



using namespace sf;
using namespace std;

void Draw(RenderWindow& window, Sprite& g, Sprite& s);
void Move(int& keyTime, RenderWindow& window, Sprite& g,Sprite& s, Texture& t, Texture& p);
int main()
{
        int keyTime = 8;
        RenderWindow window(VideoMode(640, 420), "too awesome for a title");
        window.setFramerateLimit(60);
        Texture t;
        t.loadFromFile("images/Terrain.png");
        Sprite s(t);
        Texture p;
        p.loadFromFile("images/player.png");
        Sprite g(p);
       
        s.setTextureRect(IntRect(0, 0, 64, 64));
        s.setPosition(Vector2f(300,260));
        s.setTexture(t);
       
        g.setTextureRect(IntRect(0, 0, 20, 50));
        g.setPosition(Vector2f(window.getSize().x / 2, window.getSize().y / 2));
        g.setTexture(p);

       


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

                        if (e.KeyPressed && e.key.code == Keyboard::Escape)
                                window.close();
                }
               
                Move(g,keyTime,window,s,t,p);
                Draw(window,g,s);
               
        }


        return 0;
}


void Move(int& keyTime, RenderWindow& window, Sprite& g, Sprite& s, Texture& t, Texture& p)
{
        if (keyTime < 8)
                keyTime++;

        if (Keyboard::isKeyPressed(Keyboard::A) && keyTime >= 8 && g.getPosition().x > 0)
        {
                g.move(-10.f, 0.f);
                keyTime == 0;

        }
        if (Keyboard::isKeyPressed(Keyboard::D) && keyTime >= 8 && g.getPosition().x + p.getSize().x < window.getSize().x)
        {
                g.move(10.f, 0.f);
                keyTime == 0;
        }

       

        if (Keyboard::isKeyPressed(Keyboard::S) && keyTime >= 8 && g.getPosition().y + p.getSize().x < t.getSize().y)
        {
                g.move(0.f, 10.f);
                keyTime == 0;
        }
}

void Draw(RenderWindow& window, Sprite& g, Sprite& s)
{
        window.clear();

        //draw stuff...

        window.draw(g);
        window.draw(s);

        window.display();

}
 

(sorry for the bad english)
(sorry for the bothering)

3

General / Re: Draw two different sprites

« on: April 19, 2020, 08:13:04 am »

Thank you!
 
I had thought about it but I had thought but I had discarded the idea.

4

General / Draw two different sprites

« on: April 18, 2020, 07:52:09 pm »

Hello everyone, I'm trying to make a small program in which a red rectangle (player) can walk on blocks of dirt (terrain) and when I try to put the player's sprite in the window.draw it gives me Gravity Code Description no instance overload function "sf :: RenderWindow :: draw" corresponding to the list of arguments.

There's the code:

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



using namespace sf;
using namespace std;




int main()
{
        RenderWindow window(VideoMode(640, 480), "Title");
        Texture t;
        t.loadFromFile("images/Terrain.png");
        Sprite s(t);
        Texture p;
        p.loadFromFile("images/player.png");
        Sprite g(p);
       
        s.setTextureRect(IntRect(0, 0, 64, 64));
        s.setPosition(Vector2f(20, 60));
        s.setTexture(t);

        cout << s.getPosition().x << endl;
        cout << s.getPosition().y << endl;

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

                        if (e.KeyPressed && e.key.code == Keyboard::Escape)
                                window.close();
                }
                window.clear();
                window.draw(s,g);
       
                window.display();
        }


        return 0;
}
 

(sorry for the bad english)
(sorry for the bothering)

5

General / Re: expected an expression

« on: April 16, 2020, 01:05:15 pm »

Thanks!

6

General / Re: expected an expression

« on: April 15, 2020, 09:18:47 pm »

Thanks a lot, but when i try to compile it opens a white window gives me an error :
Line 1501
Expression: vector subscript out of range


(sorry for the disturbance, but I'm new on this forum and on SFML in general, and sorry for the bad English)

7

General / Re: expected an expression

« on: April 15, 2020, 06:33:26 pm »

The error is changed, it gives me Error E0018 expected ')',and I don't understand why, since I put the parenthesis on it, I don't know this library and I'm in trouble.
There's the line of code:

drawQuad(app, road,p.x,p.y,p.z p.X, p.Y, ,p.W);

I'm programming with visual studio 2019

8

General / expected an expression

« on: April 15, 2020, 03:07:43 pm »

When i try to run this code it gives me an error:

expected an expression

(sorry for the bad english)

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



using namespace sf;

int width = 1024;
int height = 768;
int roadW = 2000;
int segL = 200; //segment lenght
float camD = 0.84;//camera depth

struct Line
{
        float x, y, z; //pokemon reference & 3d center of line
        float X, Y, W; //screen coord
        float scale;

        Line() { x = y = z = 0; }

        //from world to screen coordinates
        void project(int camX, int camY, int camZ)
        {
                scale = camD / (z - camZ);
                X = (1 + scale * (x - camX)) * width / 2;
                Y = (1 - scale * (y - camY)) * height / 2;
                W = scale * roadW * width / 2;
        }
};

void drawQuad(RenderWindow& w, Color c, int x1, int y1, int w1, int x2, int y2, int w2)
{
        ConvexShape shape(4);
        shape.setFillColor(c);
        shape.setPoint(0, Vector2f(x1-w1,y1));
        shape.setPoint(1, Vector2f(x2-w2,y2));
        shape.setPoint(2, Vector2f(x2+w2,y2));
        shape.setPoint(3, Vector2f(x1+w1,y1));
        w.draw(shape);


}

int main()
{

        RenderWindow app(VideoMode(width, height), "Outrun Racing!");
        app.setFramerateLimit(60);

        std::vector<Line> lines;

        for (int i = 0; i < 1600; i++)
        {
                Line line;
                line.z = i * segL;

                lines.push_back(line);
        }

        int N = lines.size();

        while (app.isOpen())
        {
                Event e;
                while (app.pollEvent(e))
                {
                        if (e.type == Event::Closed)
                                app.close();   
                }
                app.clear();
               
                for (int n = 0; n < 300; n++)
                {
                        Line &l = lines[n % N];
                        l.project(0, 1500, 0);

                        Color grass = (n / 3) % 2 ? Color(16, 200, 16) : Color(0, 154, 0);
                        Color rumble = (n / 3) % 2 ? Color(225, 225, 225) : Color(0, 0, 0);
                        Color road = (n / 3) % 2 ? Color(107,107, 107) : Color(105, 105, 105);

                        Line p = lines[(n-1)%N];
                        drawQuad(app, grass, 0, p.Y, width, 0, l.Y, width);
                        drawQuad(app, rumble, p.X, p.Y, p.W * 1.2, l.X, l.Y, l.W * 1.2);
                        drawQuad(app, road, p.X, p.Y, ,p.x,p.z,p.W*1.2);
                }

                app.display();
        }
        return 0;
}