rom random import randrange
from turtle import *
from freegames import vector
ball = vector(-200, -200)
speed = vector(0, 0)
targets = []
def tap(x, y):
"Respond to screen tap."
if not inside(ball):
ball.x = -199
ball.y = -199
speed.x = (x + 200) / 10
speed.y = (y + 200) / 10
def inside(xy):
"Return True if xy within screen."
return -200 < xy.x < 200 and -200 < xy-.y < 200
def draw():
"Draw ball and targets."
clear()
for target in targets:
goto(target.x, target.y)
dot(20, 'blue')
if inside(ball):
goto(ball.x, ball.y)
dot(6, 'red')
update()
def move():
"Move ball and targets."
if randrange(40) == 0:
y = randrange(-150, 150)
target = vector(200, y)
targets.append(target)
for target in targets:
target.x -= 0.5
if inside(ball):
speed.y -= 0.35
ball.move(speed)
dupe = targets.copy()
targets.clear()
for target in dupe: #璺濈
if abs(target - ball) > 13:
targets.append(target)
draw()
for target in targets:
if not inside(target):
return
ontimer(move, 50)
setup(420, 420, 370, 0)
hideturtle()
up()
tracer(False)
onscreenclick(tap)
move()
done()
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