Coding

SFML Coding

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#include <SFML/Graphics.hpp>
#include <SFML/Window/Keyboard.hpp>
#include <SFML/Audio.hpp>
#include 
#include 
#include 
#include 
#include 
#include 

float windowX = 512.f;
float windowY = 512.f;

int main() {

sf::RenderWindow window(sf::VideoMode({windowX, windowY}), "Multi-screen", sf::Style::Default);
//sf::RenderWindow window(sf::VideoMode({windowX, windowY}), "Fullscreen Game", sf::State::Fullscreen);

sf::Image img;
    if (!img.loadFromFile("res/grad.tga")) {
        std::cerr << "Failed to load image\n";
    }
sf::Texture grad;
grad.loadFromImage(img);

sf::Sprite sprite(grad);
sprite.setScale({8.0f, 8.0f});

        //
        //sf::Vector2u size = image.getSize();
        std::ofstream file("res/output.txt");
        if (!file) {
            std::cerr << "failed to set output txt";
            return 1;
        }




        for (unsigned y = 0; y < img.getSize().y; y++) {
                for (unsigned x = 0; x < img.getSize().x; x++) {

                sf::Color c = img.getPixel({x, y});

                uint8_t r = c.r;
                uint8_t g = c.g;
                uint8_t b = c.b;
                uint8_t a = c.a; // optional

                file << "Pixel (" << x << ", " << y << "): "
                          << "R=" << static_cast(c.r) << " "
                          << "G=" << static_cast(c.g) << " "
                          << "B=" << static_cast(c.b) << "\n";
                }
        }

        //vector
        const int vecW = img.getSize().y;
        const int vecH = img.getSize().x;
        std::vector grid(vecW * vecH);
        auto index = [&](int x, int y) {
        return y * vecW + x;
        };
        // Writing
        for (int y2 = 0; y2 < vecH; y2++) {
            for (int x2 = 0; x2 < vecW; x2++) {

                sf::Color c = img.getPixel({x2, y2});
                uint8_t r = c.r;
                uint8_t g = c.g;
                uint8_t b = c.b;
                uint8_t a = c.a; // optional
                grid[index(x2, y2)] = static_cast(c.b); // example value

            }
        }
        // Reading
        for (int x = 0; x < vecH; x++) {
            for (int y = 0; y < vecW; y++) {
                std::cout << "grid[" << x << "," << y << "] = "
                          << grid[index(x, y)] << "\n\n";
            }
        }
std::cout << grid[index(1,18)] << std::endl; // read a coord



while (window.isOpen()) {

        window.setFramerateLimit(25);
        window.setVerticalSyncEnabled(true);
        // Updated event handling in SFML 3
        while (const std::optional event = window.pollEvent()) {
            if (event->is()) {
                window.close();
            }
            if (sf::Keyboard::isKeyPressed(sf::Keyboard::Key::X) || sf::Keyboard::isKeyPressed(sf::Keyboard::Key::Escape)) {
            window.close();
            }
        }

        sf::Vector2i pos = sf::Mouse::getPosition(window);
        int mouseX = pos.x;
        int mouseY = pos.y;
        std::cout << pos.x << "\t" << pos.y << "\t" << grid[index(pos.x/8,pos.y/8)] << std::endl;



        window.clear(sf::Color(15,15,32));
        window.draw(sprite);
        window.display();

    }

return 0;
}