private boolean isOnScreen(BufferedImage bi, int x1, int x2, int y1, int y2) throws AWTException {
        BufferedImage fullScreen = new Robot().createScreenCapture(new Rectangle(Toolkit.getDefaultToolkit().getScreenSize()));

        if (fullScreen != null) {
            for (int x = x1; x < x2; x++) {
                for (int y = y1; y < y2; y++) {
                    boolean invalid = false;
                    int k = x, l;
                    for (int a = 0; a < bi.getWidth(); a++) {
                        l = y;
                        for (int b = 0; b < bi.getHeight(); b++) {
                            if (bi.getRGB(a, b) != fullScreen.getRGB(k, l)) {
                                invalid = true;
                                break;
                            } else {
                                l++;
                            }
                        }
                        if (invalid) {
                            break;
                        } else {
                            k++;
                        }
                    }
                    if (!invalid) {
                        if (!saved) {
                            saveCoords(x, y);
                            saved = true;
                        }
                        return true;
                    }
                }
            }
        }
        return false; //If no image is found
    }