Boids: Difference between revisions
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This task requires the creation of a graphical or purely textual |
A [[wp:Boids|Boids]] algorithm simulates the flocking behaviour of birds. This task requires the creation of a graphical or purely textual simulation of a flock of birds navigating the cave with obstacles depicted below. |
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| ⚫ | 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). |
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<pre>.......###############............................................................... |
<pre>.......###############............................................................... |
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............................................................#################........</pre> |
............................................................#################........</pre> |
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| ⚫ | 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). |
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The board was generated by this simple Python code: |
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<lang python>from array import array |
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from math import hypot |
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nx = 85 |
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ny = 16 |
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background = '.' |
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foreground = '#' |
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mat = [array("c", background) * nx for _ in xrange(ny)] |
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def add_circle(mat, (cx, cy, r)): |
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for y in xrange(cy - r, cy + r + 1): |
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for x in xrange(cx - r, cx + r + 1): |
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if hypot(cx - x, cy - y) <= r: |
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if x >= 0 and x < len(mat[0]) and y >= 0 and y < len(mat): |
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mat[y][x] = foreground |
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for c in [(14, 2, 8), (nx / 2, ny / 2, 3), (nx - 17, ny - 2, 9)]: |
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add_circle(mat, c) |
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for row in mat: |
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print row.tostring()</lang> |
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<br><br> |
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* http://natureofcode.com/book/chapter-6-autonomous-agents/ |
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<br><br> |
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=={{header|C}}== |
=={{header|C}}== |
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See [[Boids simulation/C]] |
See [[Boids simulation/C]] |
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Revision as of 20:34, 22 April 2016
Boids is a draft programming task. It is not yet considered ready to be promoted as a complete task, for reasons that should be found in its talk page.
A Boids algorithm simulates the flocking behaviour of birds. This task requires the creation of a graphical or purely textual simulation of a flock of birds navigating the cave with obstacles depicted below.
.......###############............................................................... .......###############............................................................... ......#################.............................................................. O......###############............................................................... OO.....###############............................................................... OO.....###############....................#.........................#................ OO......#############...................#####...................#########............ OO......#############...................#####..................###########........... OO.......###########...................#######................#############.......... OO.........#######......................#####................###############......... OO............#.........................#####...............#################........ OO........................................#.................#################........ O...........................................................#################........ ............................................................#################........ ...........................................................###################....... ............................................................#################........
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).
A simulation that doesn't contain obstacles but only shows flocking behavior is acceptable.
See also:
C
Java
Racket
Here is the result. The Whalesong compiler was used to compile the Racket source into JavaScript.