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Activities/Turtle in a Pond (view source)
Revision as of 14:35, 16 December 2011
, 14:35, 16 December 2011→Strategy
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</pre>
The turtle choose a random direction and goes there if the dot is open.
The turtle choose a random direction and goes there if the dot is open. (This is the beginner strategy.)
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<pre>
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</pre>
In this strategy, the turtle will go off the edge if it can.
In this strategy, the turtle will go off the edge if it can. (This is the intermediate strategy.)
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A weighing function is used: preference is given to dots closer to the edges.
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<pre>
def _turtle_strategy(self, turtle):
def _turtle_strategy(self, turtle):
return turtle
return turtle
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This is the expert strategy.
<pre>
def _turtle_strategy(self, turtle):
dots = self._surrounding_dots(turtle)
for i in range(6):
if self._dots[dots[i]].type is None:
self._orientation = i
return self._dot_to_grid(dots[i])
dots_ordered_by_weight = self._ordered_weights(turtle)
for i in range(6):
self._orientation = dots.index(dots_ordered_by_weight[i])
if self._daylight_ahead(turtle):
return self._dot_to_grid(dots[self._orientation])
n = int(uniform(0, 6))
for i in range(6):
if not self._dots[dots[(i + n) % 6]].type:
self._orientation = (i + n) % 6
return self._dot_to_grid(dots[(i + n) % 6])
self._orientation = (i + n) % 6
return turtle
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The dots are stored in a 13✕13 array. Each dot has an attribute, 'type', that determines it status. The edges have a type=None. Occupied dots have a type=True. Unoccupied dots have a type=False.
The dots are stored in a 13✕13 array. Each dot has an attribute, 'type', that determines it status. The edges have a type=None. Occupied dots have a type=True. Unoccupied dots have a type=False.