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Activities/Turtle in a Pond (view source)
Revision as of 09:59, 1 December 2011
, 09:59, 1 December 2011→Strategy
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In the '''default strategy''', it looks for a path to the edge in the direction it was already heading.
In this version, it looks for a path to the edge in the direction it was already heading.
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self._orientation = (i + n) % 6
self._orientation = (i + n) % 6
return self._dot_to_grid(dots[(i + n) % 6])
return self._dot_to_grid(dots[(i + n) % 6])
return turtle
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In the '''default strategy''', a weighting function is used: preference is given to dots closer to the edges.
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def _turtle_strategy(self, turtle):
dots = self._surrounding_dots(turtle)
for i in range(6):\n\
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
return turtle
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;self._surrounding_dots((column, row)): returns an array of dots surrounding a given position in the grid
;self._surrounding_dots((column, row)): returns an array of dots surrounding a given position in the grid
;self._daylight_ahead((column, row)): returns True if there is a clear path to the edge heading in the current direction
;self._daylight_ahead((column, row)): returns True if there is a clear path to the edge heading in the current direction
:self._ordered_weights((column, row)): returns an array of surrounding dots ordered by their distance from the edge
;self._dots: the array of dots from which you can test the type attribute (self._dots[i].type==None → edge; self._dots[i].type==False → open; self._dots[i].type==True → blocked)
;self._dots: the array of dots from which you can test the type attribute (self._dots[i].type==None → edge; self._dots[i].type==False → open; self._dots[i].type==True → blocked)
;self._orientation:you can set the orientation of your turtle by assigning a number from 0-5 (clockwise beginning with 30 degrees from north)
;self._orientation:you can set the orientation of your turtle by assigning a number from 0-5 (clockwise beginning with 30 degrees from north)