Boids: Difference between revisions

This task requires the creation of a graphical or purely textual basic simulation of [[wp:Boids|Boids]].

See:

* http://www.red3d.com/cwr/boids/

If you implement a purely textual simulation, this is a possible board representation, where "O" are the boids that should go toward the right, "#" are fixed walls that should be avoided by the boids, and "." is free space (using a space is also acceptable for free space, if you add some kind of frame around the board).

An even simpler simulation that doesn't contain walls is acceptable.

The board was generated by this simple Python code:

<lang python>from array import array

from math import hypot

nx = 85

ny = 16

background = '.'

foreground = '#'

mat = [array("c", background) * nx for _ in xrange(ny)]

def add_circle(mat, (cx, cy, r)):

for y in xrange(cy - r, cy + r + 1):

for x in xrange(cx - r, cx + r + 1):

if hypot(cx - x, cy - y) <= r:

if x >= 0 and x < len(mat[0]) and y >= 0 and y < len(mat):

mat[y][x] = foreground

for c in [(14, 2, 8), (nx / 2, ny / 2, 3), (nx - 17, ny - 2, 9)]:

add_circle(mat, c)

for row in mat:

print row.tostring()</lang>