Edit detail for HungryBird revision 1 of 1

changed:
-
a hungry bird.

are attracted by FooD, e.g. by an AppleTree that has grown some.

http://an.org/programming/bird.py (Hungry, Growing and Breeding birds)

hungryness part:

class Bird(World):
    """A bird. Flies, and wants to eat often. Might be called HungryBird,
    until gets food (test returns true then - perhaps gets to Breeding).

(...)

    Have been thinking of these as a swarm too, 
    but can start as individuals too 
    (there is no difference really, in a way, as we know ;)"""

    SPEED = 0.01

    def begin_round(self):
        if self.target is None:
            if self.parent.food:
                self.target = random.choice(self.parent.food)
                print "Bird got to know there is food, goes to get some at", self.target, self

        else:
            if self.target in self.parent.food:
                t = self.target

            else:
                """oh no my food has disappeared!"""
                self.target = None

        self.test()


    def get(self, food):
        self.food.append(self.parent.give(food))
        
    def test(self):
        #assert self.want(Food) - no need to code really, that's what this is
        #if self.had_food is None:
        #    self.had_food = self.food

        if self.target is None:
            if self.parent.food:
                print "the world has food but this bird no target, what's wrong?", self.parent.food

        elif not self.food:
            #print "Has no food yet - going towards", self.target, self
            pass

        #else: #is this right - or should be 'if self.food'?
        if self.food:
            print "Bird got food succesfully!", self
            #target might go to None if these were to be not greedy?
            return True #success!

        return False #not (yet

x.