PixelFloodClient/de/darkress/pixelfood/Main.java

package de.darkress.pixelfood;

import javax.imageio.ImageIO;
import javax.sound.sampled.Port;
import java.awt.image.BufferedImage;
import java.io.*;
import java.net.*;
import java.util.ArrayList;

class Main
{
    private static BufferedImage processImage(String imageFile) {
        BufferedImage image;
        try {
            File file = new File(imageFile);
            image = ImageIO.read(file);
            return image;
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }

    private static ArrayList<String> prepareArray(BufferedImage image, int xOffset, int yOffset) {
        ArrayList<String> pixelArray = new ArrayList<>();

        int width = image.getWidth();
        int height = image.getHeight();

        // Iterate over each pixel
        for (int y = 0; y < height; y++) {
            for (int x = 0; x < width; x++) {
                // Get the RGBA value of the pixel
                int pixel = image.getRGB(x, y);

                // Extract individual color components
                int alpha = (pixel >> 24) & 0xFF;
                int red = (pixel >> 16) & 0xFF;
                int green = (pixel >> 8) & 0xFF;
                int blue = pixel & 0xFF;
                String rgbValue = String.format("%06X", (pixel & 0xFFFFFF));
                String messageParameters = String.format("PX %s %s %s\n", x+xOffset, y+yOffset, rgbValue);
                if(alpha != 0)
                {
                    pixelArray.add(messageParameters);
                }

                // Print RGBA values
                System.out.println("Pixel at (" + x + ", " + y + "):");
                System.out.println(rgbValue);
            }
        }
        return pixelArray;
    }

    public static void main(String[] args) {
        final int PORT = 1234;
        final String HOSTNAME = "localhost";
        final int xOffset = 0;
        final int yOffset = 0;
        InetAddress serverAddress = null;
        try {
            serverAddress = InetAddress.getByName(HOSTNAME);
        } catch(UnknownHostException e) {
            e.printStackTrace();
        }

        // Read the PNG file
        BufferedImage image = processImage("girl.png");
        ArrayList<String> pixelArray = prepareArray(image, xOffset, yOffset);

        try {
            DatagramSocket socket = new DatagramSocket();
            while(true) {
                for(int i = 0; i < pixelArray.size(); i++) {
                    byte[] messageBytes = pixelArray.get(0).getBytes();
                    DatagramPacket packet = new DatagramPacket(messageBytes, messageBytes.length, serverAddress, PORT);
                    socket.send(packet);
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}