source: java-automator/src/nl/rickvanderzwet/farmville/Automator.java

/*
 * Rick van der Zwet <info@rickvanderzwet.nl>
 * License BSDLike http://rickvanderzwet.nl/LICENSE
 */

package nl.rickvanderzwet.farmville;

import java.awt.AWTException;
import java.awt.Color;
import java.awt.Point;
import java.awt.PointerInfo;
import java.awt.Robot;
import java.awt.event.InputEvent;
import java.util.Random;
import java.awt.MouseInfo;
import java.io.IOException;



public class Automator {
        
        public enum Direction {
            UP, DOWN, LEFT, RIGHT
        }
        
        /* Constants */
        static Integer FARMSIZE_Y = 7;
        static Integer FARMSIZE_X = 22;
        static boolean mouseClickEnabled = false;

        
        private static Robot bot = null;
        private static Random randomGenerator = null;

        /* Parcel size in pixels */
        static Integer XMOVE = 22;       
        static Integer YMOVE = 11; 
        
        private static void pressMouse() throws InterruptedException {
                if (mouseClickEnabled) {
                        bot.mousePress(InputEvent.BUTTON1_MASK);
                        // Constant values are tricky, computers can only do that
                        Thread.sleep(100 + randomGenerator.nextInt(250));
                        bot.mouseRelease(InputEvent.BUTTON1_MASK);
                }
                
        }
        
        private static void moveMouse(Direction direction) throws InterruptedException {
                moveMouse(direction, 100);
        }
        
        private static void moveMouse(Direction direction, Integer sleep_msec) throws InterruptedException {
                /* Relocate to next field */
                Point mouse = MouseInfo.getPointerInfo().getLocation();
                
                /* Grumble half pixels moves are not possible, this will hack around it */
                XMOVE = (XMOVE == 22) ? XMOVE-- : XMOVE++;
                YMOVE = (YMOVE == 11) ? YMOVE-- : YMOVE++;


                
                Point newLocation = mouse;
                switch (direction) {
                        case UP:
                                newLocation.x -= XMOVE;
                                newLocation.y -= YMOVE;
                        break;
                        case DOWN:
                                newLocation.x += XMOVE;
                                newLocation.y += YMOVE;
                        break;
                        case LEFT:
                                newLocation.x -= XMOVE;
                                newLocation.y += YMOVE;
                        break;
                        case RIGHT:
                                newLocation.x += XMOVE;
                                newLocation.y -= YMOVE;
                        break;
                }
                bot.mouseMove(newLocation.x, newLocation.y);
                Thread.sleep(sleep_msec);
                
                mouse = MouseInfo.getPointerInfo().getLocation();
                if (newLocation.x != mouse.x || newLocation.y != mouse.y) {
                        System.out.println("Forced exit, mouse moved externally");
                        System.exit(1);
                }

        }
        
        /**
         * @param args
         * @throws InterruptedException 
         * @throws IOException 
         */
        public static void main(String[] args) throws InterruptedException, IOException {
                try {
                        //bot.mouseMove(100, 100);
                        bot = new Robot();
                        PointerInfo pointer = null;
                        Point mouse = null;
                    randomGenerator = new Random();
                        // Allow time to focus Firefox window
                        Thread.sleep(3000);

                        /*
                        bot.mouseMove(500, 500);
                        bot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
                        bot.mouseMove(700, 700);
                        bot.mouseRelease(InputEvent.BUTTON1_MASK);
                        */
                        
                        /* 0 = up, 1 = down, 2 = left, 3 = right */
                        
                    pressMouse();
                    
                    Direction direction = Direction.RIGHT;
                    
                    /* Move around naturally, from top left, to bottom right */
                    for (int i = 0; i < FARMSIZE_Y; i++) {
                        for (int j = 0; j < FARMSIZE_X; j++) {
                                pointer = MouseInfo.getPointerInfo();
                                        mouse = pointer.getLocation();
                                System.out.println("x: " + mouse.x + ", y: " + mouse.y);


                                /* Too difficult, try larger parts */
                                Color p = bot.getPixelColor(mouse.x, mouse.y);  
                                System.out.println("Pixel color R:" + p.getRed() + ",G:" + 
                                                p.getGreen() + ",B:" + p.getBlue());
                                
                                pressMouse();
                                moveMouse(direction);
                        }
                    
                        moveMouse(Direction.DOWN);
                        pressMouse();
                        
                        /* Flip direction around */
                        direction = (direction == Direction.LEFT) ? Direction.RIGHT : Direction.LEFT;

                    }
                } catch (AWTException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                }

                // TODO Auto-generated method stub

        }
}