turtle games

# set up for games

import turtle
import math
import random

#screen setup
wn = turtle.Screen()
wn.bgcolor("lightblue")



# draw a border
mypen= turtle.Turtle()
mypen.penup()
mypen.setposition(-300,-300)
mypen.pendown()
mypen.pensize(3)
for side in range(4):
    mypen.forward(600)
    mypen.left(90)
mypen.hideturtle()
#create a turtle
player= turtle.Turtle()
player.color("blue")
player.shape("triangle")
player.penup()
player.speed(0)

# make more enemies

maxEnemies = 6
enemies = []




#create enemies

for count in range(maxEnemies) :
    enemies.append(turtle.Turtle())
    enemies[count].color("red")
    enemies[count].shape("circle")
    enemies[count].penup()
    enemies[count].speed(0)
    enemies[count].setposition(random.randint(-300, 300),random.randint(-300, 300))

#set speed variable
speed = 1

#define funct    ions

def turnleft():
    player.left(30)

def turnright():
    player.right(30)

def increasespeed():
    global speed
    speed+= 1

def  isCollision(t1,t2):
    d = math.sqrt(math.pow(t1.xcor()-t2.xcor(),2)+math.pow(t1.ycor()-t2.ycor(),2))
    if d < 20:
        return True
    else:
        return False



#set keyboard bindings
turtle.listen()
turtle.onkey(turnleft,"Left")
turtle.onkey(turnright,"Right")
turtle.onkey(increasespeed,"Up")




while True:
    player.forward(speed)



# SET BOUNDARIES
    if player.xcor() > 300 or player.xcor() < -300:
        player.right(180)

    if player.ycor() > 300 or player.ycor() < -300:
        player.right(180)




# move enemy
for count in range(maxEnemies):
    enemies[count].forward(3)
# set enemy boundary
    if enemies[count].xcor() > 290 or enemies[count].xcor() < -290:
        enemies[count].right(180)

    if enemies[count].ycor() > 290 or enemies[count].ycor() < -290:
        enemies[count].right(180)
#collision checking
    if isCollision(player, enemies[count]):
            enemies[count].setposition(random.randint(-300, 300),random.randint(-300, 300))
            enemies[count].right(random.randint(0,360))



delay = input("Press enter to finish.")



File "/Users/johngrumbrechtiv/Desktop/python_work/turtle_game.py", line 82, in <module>
    player.forward(speed)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/turtle.py", line 1637, in forward
    self._go(distance)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/turtle.py", line 1605, in _go
    self._goto(ende)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/turtle.py", line 3158, in _goto
    screen._pointlist(self.currentLineItem),
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/turtle.py", line 755, in _pointlist
    cl = self.cv.coords(item)
  File "<string>", line 1, in coords
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/tkinter/__init__.py", line 2466, in coords
    self.tk.call((self._w, 'coords') + args))]
_tkinter.TclError: invalid command name ".!canvas"
[Finished in 13.4s with exit code 1]
[cmd: ['/usr/local/bin/python3', '-u', '/Users/johngrumbrechtiv/Desktop/python_work/turtle_game.py']]
[dir: /Users/johngrumbrechtiv/Desktop/python_work]
[path: /Library/Frameworks/Python.framework/Versions/3.6/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin]