Topics

1

General / Problem with drawing text from inherited class

« on: February 16, 2018, 02:28:41 pm »

Hello
this is my modified RectangleShape class:

(click to show/hide)

class ClickableButton : public sf::RectangleShape{
public:
    void update();
    std::string codeName;
    int type;
    std::string caption;
    bool checked;
    sf::Text cap;
    ClickableButton(std::string caption){
        this->caption = caption;
        type = ButtonType::groupable;
        cap.setFont(mainFont);
        cap.setCharacterSize(100);
        checked = false;
        update();
    }
    void setDimensions(sf::Vector2f siz, sf::Vector2f pos);
    bool isClicked(const sf::Vector2f & mousePosition);
};
 

I have also modified RenderWindow class to draw it:

(click to show/hide)

namespace sf{

    class UpgradedWindow : public sf::RenderWindow{
    public:
        UpgradedWindow(sf::VideoMode vm, const sf::String & title, sf::Uint32 style = sf::Style::Default):
            sf::RenderWindow(vm, title, style){
        };

        using sf::RenderWindow::draw;

        void draw(ClickableButton&);
    };

}

void sf::UpgradedWindow::draw(ClickableButton & Button){
    sf::RenderWindow::draw(Button);
    sf::RenderWindow::draw(Button.cap);
}

 

Sadly, when I try to draw my ClickableButton, the Rectangleshape draws fine, but the text is not displayed. What could be the cause?
Font loads nice because other text displays just fine

2

General / How to measure which border will the ray "hit"

« on: September 26, 2017, 05:52:39 pm »

I think the image explains it all, Is it possible to measure which border will a ray "hit" if it was longer without using complex trigonometry?

3

General / Problem with linking

« on: November 05, 2016, 10:24:35 pm »

Hi!
On linux i just go -lsfml-<part> when i try to link something, on windows i did what is on screenshot, and i get
undefined reference to sf::err() linker errors
pic attached my linker list, Im not sure why it is not working

4

General / Problem with moving several object

« on: October 27, 2016, 07:24:48 pm »

Hi!
I want to make animated road using sfml, so I made objects that represent lines on the street.
There are 2 functions, init and move, while move is casted everytime, init is only used once.
These are the functions, along with function to draw them on window.

Code: [Select]

void lines::initialise(sf::RenderWindow &window){
    std::vector<sf::RectangleShape> temp;
    temp.resize(ammount);
    siz = window.getSize().y/40;
    for(int i = 0; i < ammount; i++){
        temp[i].setSize(sf::Vector2f(6, siz));
        temp[i].setFillColor(sf::Color(255,255,255));
    }
    for(int i = 0; i < ammount; i++){
        temp[i].setPosition(0, siz*2*i);
    }
    line = temp;
}

void lines::drawintargetwindow(sf::RenderWindow &window){
    int temp;
    temp = window.getSize().x*0.4-3;
    for(int i = 0; i < ammount; i++){
        line[i].setPosition(temp, line[i].getPosition().y);
        window.draw(line[i]);
    }
    temp = window.getSize().x*0.6-3;
    for(int i = 0; i < ammount; i++){
        line[i].setPosition(temp, line[i].getPosition().y);
        window.draw(line[i]);
    }
}

void lines::move(){
    time=clock.getElapsedTime();
    clock.restart();
    for(int i = 0; i < ammount; i++){
        line[i].move(sf::Vector2f(0, speed*time.asSeconds()));
        if(line[i].getPosition().y > siz*40)
            line[i].setPosition(0, 0-siz);
    }
}

so the problem is, there is a gap between these lines, screen will demonstrate, second attachement shows what happens if i comment out whole content of move function (while move is still called, it is just commented out so does nothing)

5

General / How to properly resize sf::Rectangleshape

« on: July 06, 2016, 07:42:25 pm »

Hi
I have a texture lets name it texutre one.
So texture one's resolution is 500x250
I also have a RectangleShape
I want to:
set the texture to Rectangle shape, then rotate it by 90 degrees
for example
XXXXXXXXX
XXXXXXXXX
XXXXXXXXX
to:
XXXX
XXXX
XXXX
XXXX
XXXX

thats kinda easy to do, i have a problem later

i want to set the width of already rotated Rectangleshape to 30% of the overall screen width which i something managed to do.
now the hardest part i dont know how to do (i tried every possilbe way i can think of)
i want to set the lenght (or actually the height of  already rotated element) so it keeps the proportion;
for example if texture is 500x250 the proportion is 2
so i want the lenght (height) of the shape to be 2 times longer than its width, of course these values change some texture can be 500x100, some can be 500x200
i have tried something like this
shape.setsize(texture.getsize().x/texture.getsize.()y*screenwidth*0.3, screenwidth*0.3);
but it doesnt work, im not sure why (the textures indeed show, but they are flattened)
can anyone explain why it is not working and give me a better idea?

The exact order of things being done is:
loadfile to texture
set texture to rectangleshape
set size of rectangleshape
set its origin (it has to be changed by its height because it will be rotated 90 degree and i want upper left corner be 0,0 not 0, -height)
set its position on screen (not mportant here i guess)
rotate it

6

General / Displaying text previously get by winapi [crash]

« on: June 21, 2016, 12:16:38 pm »

Hi i get a text from text field to wstring (text contains polish chars)
GetWindowTextW(g_name, (LPWSTR)g_namestr.c_str(), GetWindowTextLength(g_name) + 1);

sadly, this:
                  text.setString(g_namestr);
or this:
                  text.setString(g_namestr.c_str());

causes the app to crash.
I need it to be wide string (displaying polish chars is a must), i know i can manually set a wide string to text by
text.setString(L"Wide text");
but how do i do it with predefined text string?

7

General / Problem with a class with texture element

« on: June 02, 2016, 10:57:51 pm »

Hi!
I have a class like:

someclass name{
public:
 sf::Texture sometexture;
 sf::Sprite somesprite;
void settexture(){
somesprite.settexture(sometexture);
}
void loadtxt(std::string path){
sometexture.loadfromfile(path);
}
};

and then somewhere in code  i have;
std::vector <name> arrayofclasses;
...
arrayofclasses[i].loadtxt("Files/file.bmp");
arrayofclasses[i].settexture();
 

and i get compiler error:
'void sf::Shape::setTexture(const sf::Texture *,bool)': cannot convert argument 1 from 'sf::Texture' to 'const sf::Texture *'


ofc the code up there is just sample i wanted to explain what i have in a simple way, but it looks like this: array of classes, in one of them i want to set texture and then load them to sprite.

im using visual studio

why does it happen?
what is wrong?
would appreciate any help