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POGetting Turtle to Bounce Off the Walls
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  1. POGetting Turtle to Bounce Off the Walls
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    copied!<p>I am making a program for somebody, so they can exercise their eyes, and I am using the turtle, so it will move randomly. I want the turtle to bounce off the walls, so that it does not disappear off the sides, never to be seen again! I have looked at: <a href="https://stackoverflow.com/questions/1457332/turtlegraphics-python-bouncing-turtle-off-the-walls/1457659#1457659">TurtleGraphics Python: Bouncing turtle off the walls?</a> and used some code from jnylen, so some credit goes to him! Anyway, here is my old, and terrible code (This is kept for reference):</p> <pre><code>from random import * from turtle import * penup() # Get rid of those lines it leaves behind! def main(): while True: # I want this to be infinite a = randint(1,600) print a b = randint(1,359) print b c = randint(1,600) print c d = randint(1,359) print d #Checking my randoms forward(a) edge() # Keep calling edge, so it will bounce on the edge. left(b) edge() # Keep calling edge, so it will bounce on the edge. forward(c) edge() # Keep calling edge, so it will bounce on the edge. right(d) edge() # Keep calling edge, so it will bounce on the edge. def edge(): x, y = position() top = window_height()/2 bottom = -top right = window_width()/2 left = -right if (x &lt;= left and 90 &lt;= heading() &lt;= 270) or (right &lt;= x and not 90 &lt;= heading() &lt;= 270): f = 178 * h left(f) main() elif (y &lt;= bottom and heading() &gt;= 180) or (top &lt;= y and heading &lt;= 180): f = -2 * heading() left(f) main() else: main() main() </code></pre> <p>However, When I run it, I get the output: </p> <pre><code>189 199 553 152 26 175 597 263 119 201 582 329 231 267 344 28 Traceback (most recent call last): File "C:/Users/George/Desktop/Eyes.py", line 39, in &lt;module&gt; main() File "C:/Users/George/Desktop/Eyes.py", line 15, in main edge() File "C:/Users/George/Desktop/Eyes.py", line 38, in edge main() File "C:/Users/George/Desktop/Eyes.py", line 15, in main edge() File "C:/Users/George/Desktop/Eyes.py", line 38, in edge main() File "C:/Users/George/Desktop/Eyes.py", line 15, in main edge() File "C:/Users/George/Desktop/Eyes.py", line 38, in edge main() File "C:/Users/George/Desktop/Eyes.py", line 15, in main edge() File "C:/Users/George/Desktop/Eyes.py", line 31, in edge left(f) TypeError: 'int' object is not callable </code></pre> <p>Please, can somebody help me fix this. I have tried setting <code>f</code> to a <code>float</code>, a <code>string</code> and an <code>int</code>, but nothing works! This is probably something really obvious, so if it is, sorry.</p> <p>Here is my new, and hopefully, correct code: </p> <pre><code>from random import * from turtle import * penup() # Get rid of those lines it leaves behind! def main(): while True: # I want this to be infinite a = randint(1,600) print a b = randint(1,359) print b c = randint(1,600) print c d = randint(1,359) print d #Checking my randoms forward(a) x, y = position() top = window_height()/2 bottom = -top right = window_width()/2 l = -right if (x &lt;= l and 90 &lt;= heading() &lt;= 270) or (right &lt;= x and not 90 &lt;= heading() &lt;= 270): f = 178 * heading() left(f) print "1" elif (y &lt;= bottom and heading() &gt;= 180) or (top &lt;= y and heading &lt;= 180): f = -2 * heading() left(f) print "2" else: print "3" left(b) x, y = position() top = window_height()/2 bottom = -top right = window_width()/2 l = -right if (x &lt;= l and 90 &lt;= heading() &lt;= 270) or (right &lt;= x and not 90 &lt;= heading() &lt;= 270): f = 178 * heading() left(f) print "1" elif (y &lt;= bottom and heading() &gt;= 180) or (top &lt;= y and heading &lt;= 180): f = -2 * heading() left(f) print "2" else: print "3" forward(c) x, y = position() top = window_height()/2 bottom = -top right = window_width()/2 l = -right if (x &lt;= l and 90 &lt;= heading() &lt;= 270) or (right &lt;= x and not 90 &lt;= heading() &lt;= 270): f = 178 * heading() left(f) print "1" elif (y &lt;= bottom and heading() &gt;= 180) or (top &lt;= y and heading &lt;= 180): f = -2 * heading() left(f) print "2" else: print "3" right(d) x, y = position() top = window_height()/2 bottom = -top right = window_width()/2 l = -right if (x &lt;= l and 90 &lt;= heading() &lt;= 270) or (right &lt;= x and not 90 &lt;= heading() &lt;= 270): f = 178 * heading() left(f) print "1" elif (y &lt;= bottom and heading() &gt;= 180) or (top &lt;= y and heading &lt;= 180): f = -2 * heading() left(f) print "2" else: print "3" main() </code></pre>
 

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