Color Detection

public boolean seeSlender()
    {
        //To make sure it's on the screen (I have a scrolling game, if you do, keep this, and change 275 to the value you want, if not, remove this)
        if (getObjectsInRange(275, Slender.class).size() == 0)
            return false;
        Slender s = (Slender)getObjectsInRange(275, Slender.class).get(0);  //Or angel, if that's what you want, again, you can get rid of this and replace it with Slender s = (Slender)getWorld().getObjects(Slender).get(0) if you have multiple angels, read the code below this method
        int sX = s.getX();  //x Location of the slender/angel
        int sY = s.getY();  //y location
        int dir = getRotation(); //current direction
        turnTowards(sX, sY); //Turns it towards slender/angel
        int dir2 = getRotation();  //new directiong
        setRotation(dir);  //set direction back to normal (so it looks like nothing happend)
        return dir - dir2 <= /*The beam's range / 2 */ && dir - dir2 >= /*The beam's range / -2*/;
    }

for (Slender /*or angel*/ s : getWorld().getObjects(Slender.class)
{
        int sX = s.getX();
        int sY = s.getY();
        int dir = getRotation();
        turnTowards(sX, sY);
        int dir2 = getRotation();
        setRotation(dir);
        if (dir - dir2 <= /*Beam's range / 2*/ && dir - dir2 >= /*Beam's range / -2*/
        return true;
}
return false;

if (img == null)
{
    System.out.println("the image is not present");
    Greenfoot.stop();
    return;
}
Color imgColor = img.getColorAt(getX(), getY());
if (color.equals(imgColor))