Question

我遇到一个错误，它拒绝显示我的比赛得分。另一个问题是，对于敌人来说，弹跳是非常可预测的。

对于敌人的弹跳，我尝试从右到左插入随机数，但似乎没有用。对于计分问题，我尝试用Google搜索，但找不到任何东西

#set the score
score = 0
#draw the score
score = turtle.Turtle()
score.speed(0)
score.color("white")
score.penup()
score.setposition(-290, 280)
scorestring = "Score: %s" %score
score.write(scorestring, False, align="left", font=("Arial", 14, "normal"))
score.hideturtle()

#Create the player turtle

player = turtle.Turtle()
player.color("yellow")
player.shape("square")
player.penup()
player.speed(0)
player.setposition(0, -250)
player.shapesize(2.3)

player_speed = 35

# player movement

def move_left():
    x = player.xcor() - player_speed

    if x < -280:
        x = - 280

    player.setx(x)

def move_right():
    x = player.xcor() + player_speed

    if x > 280:
        x = 280

    player.setx(x)

# keybindings
turtle.listen()
turtle.onkey(move_left, "Left")
turtle.onkey(move_right, "Right")

# create sprite
enemy = Enemy('circle', 'red', -200, 250)

# main game loop
def play():
    enemy.move()

    # check for collision
    if enemy.is_collision(player):
         x = random.randint(-250, 250)
         y = random.randint(-250, 250)
         enemy.setposition(-250, 250)
         enemy.setheading(250)
         #update the score
         score += 20
         scorestring = "Score: %s" %score
         scorepen.clear()
         scorepen.write(scorestring, False, align="left", font=("Arial", 14,
"normal"))

    wn.ontimer(play, 0 )

play()

我希望它能显示分数，但这是发生的错误

Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Users\prana\AppData\Local\Programs\Python\Python37-32\lib\tkinter\__init__.py", line 1705, in __call__
    return self.func(*args)
  File "C:\Users\prana\AppData\Local\Programs\Python\Python37-32\lib\tkinter\__init__.py", line 749, in callit
    func(*args)
  File "C:\Users\prana\Desktop\game.py\players v enemys.py", line 128, in play
    score += 20
UnboundLocalError: local variable 'score' referenced before assignment

如何用得分和敌人的最大反弹来解决我的问题

0 个答案: