#!/usr/bin/env python
# notes on how to use vectors to move the bees around in pyglet
from euclid import Vector2 as v
from pyglet import window
from pyglet import font
from random import randint

b = v(1,1) # bee at 1,1
h = v(150,150) # hive at 4,4

b_range = 10 # the range of the bee, the distance they can travel.

def in_range(b, h):
    # return true if magnitude (distance) is less than 1
    return (b - h).magnitude() < b_range

# move the bee one tick towards the hive
def move_towards_hive(b,h):
    return b + ( h - b ).normalized() * b_range

def move_random(b):
    return b + (v(randint(0,100), randint(0,100)) - b).normalized() * b_range

win = window.Window()
ft = font.load('Arial', 18)

# make a bunch of bees
bees = []
for i in range(10):
    bees.append(v(randint(0,400),randint(0,400)))

while not win.has_exit:
    win.dispatch_events()
    while not in_range(b,h):
        win.clear()
        for i in range(len(bees)):
            bees[i] = move_towards_hive(bees[i],h)
            b = bees[i]
            b_text = font.Text(ft, 'b', x=b.x, y=b.y).draw()
        h_text = font.Text(ft, 'h', x=h.x, y=h.y).draw()
        win.flip()