我是初学者。我从5个月开始学习编程,作为主要语言,我决定坚持使用python。我写了我的第一个简单的乒乓球比赛(基于你的教程),我希望通过在每次击球后加速球并在得分时恢复正常速度来提高它。我知道我把ball.dx + = 1放在了错误的地方。它加速了,但只有当球上升时。当它下降时,它恢复到正常速度,当然速度循环,即使得分,它仍然加速。感谢任何帮助。import turtle
wn = turtle.Screen()
wn.title("gra by mati")
wn.bgcolor("black")
wn.setup(width=800, height=600)
# Paddle A
paddle_a = turtle.Turtle()
paddle_a.shape("square")
paddle_a.shapesize(stretch_wid=5, stretch_len=1)
paddle_a.speed(0)
lor("white")
paddle_a.penup()
(-350, 0)
# Paddle B
paddle_b = turtle.Turtle()
paddle_b.shape("square")
paddle_b.shapesize(stretch_wid=5, stretch_len=1)
paddle_b.speed(0)
lor("white")
paddle_b.penup()
(350, 0)
# ball
ball = turtle.Turtle()
ball.shape("square")
ball.speed(0)
ball.penup()
<(0, 0)ball.dx = 1/5
ball.dy = 1/5
# Pen
pen = turtle.Turtle()
pen.speed(0)
pen.penup()
pen.hideturtle()
<(0, 260)pen.write("Player A: 0 Player B: 0", align="center", font=("Courier", 24, "normal"))
# Score
score_a = 0
score_b = 0
# Function
def paddle_a_up():
y = ()
y += 20
paddle_a.sety(y)
def paddle_a_down():
y = ()
y -= 20
paddle_a.sety(y)
def paddle_b_up():
y = ()
y += 20
paddle_b.sety(y)
def paddle_b_down():
y = ()
y -= 20
paddle_b.sety(y)
#keyboard biding
wn.listen()
# Main game loop
while True:
wn.update()
# move the ball
ball.() + ball.dx)
ball.() + ball.dy)
# border checking
() > 290:
ball.sety(290)
ball.dy *= -1
() < -290:
ball.sety(-290)
ball.dy *= -1
() > 390:
<(0, 0)ball.dx *= -1
score_a += 1
pen.clear()
pen.write("Player A: {} Player B: {}".format(score_a, score_b), align="center", font=("Courier", 24, "normal"))
() < -390:
<(0, 0)ball.dx *= -1
score_b += 1
pen.clear()
pen.write("Player A: {} Player B: {}".format(score_a, score_b), align="center", font=("Courier", 24, "normal"))
# paddle and ball collision
if (() > 340 () < 350) and (() < () + 50 () > () -40):
ball.setx(340)
ball.dx +=1
ball.dx *= -1
if (() < -340 () > -350) and (() < () + 50 () > () -40):
ball.setx(-340)
ball.dx +=1
ball.dx *= -1
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