我正在尝试制作一个游戏，在其中您可以发射子弹杀死表情符号。但是，我无法弄清楚如何停止发送空格键来发射子弹。如果您继续发送垃圾邮件，那么游戏将变得非常简单。我不确定是否应该使用sleep命令或其他命令。请帮忙！谢谢！
这是我的代码：
# import everything from turtle
from turtle import *
import random
import math
#create a link to the object (creates the environment)
screen = Screen()
speed1 = 1.3
ht()
amountOfEmojis = 11
#set a boundary for screen, if touches end, goes to the other side
screenMinX = -screen.window_width()/2
screenMinY = -screen.window_height()/2
screenMaxX = screen.window_width()/2
screenMaxY = screen.window_height()/2
#establish important data for screen environment
screen.setworldcoordinates(screenMinX,screenMinY,screenMaxX,screenMaxY)
screen.bgcolor("black")
#turtle setup
penup()
ht()
speed(0)
goto(0, screenMaxY - 50)
color('white')
write("Welcome to Emoji Run!", align="center", font=("Courier New",26))
goto(0, screenMaxY - 70)
write("Use the arrow keys to move and space to fire. The point of the game is to kill the emojis", align="center")
goto(0, 0)
color("red")
emojis = ["Poop_Emoji_7b204f05-eec6-4496-91b1-351acc03d2c7_grande.png", "1200px-Noto_Emoji_KitKat_263a.svg.png",
"annoyningface.png", "Emoji_Icon_-_Sunglasses_cool_emoji_large.png"]
class Bullet(Turtle):
#constructor, object for a class, pass in information
def __init__(self,screen,x,y,heading):
#create a bullet
Turtle.__init__(self)#clones bullet
self.speed(0)
self.penup()
self.goto(x,y)
self.seth(heading)#pointing to itself
self.screen = screen
self.color('yellow')
self.max_distance = 500
self.distance = 0
self.delta = 20
self.shape("bullet")
#logic to move bullet
def move(self):
self.distance = self.distance + self.delta#how fast it's going to move
self.forward(self.delta)
if self.done():
self.reset()
def getRadius(self):
return 4#collision detection helper function
def blowUp(self):
self.goto(-300,0)#function that makes something go off the screen
def done(self):
return self.distance >= self.max_distance # append to list
class Asteroid(Turtle):
def __init__(self,screen,dx,dy,x,y,size,emoji):#spawn asteroid randomly
Turtle.__init__(self)#clone itself
self.speed(0)
self.penup()
self.goto(x,y)
self.color('lightgrey')
self.size = size
self.screen = screen
self.dx = dx
self.dy = dy
r = random.randint(0, len(emoji) - 1)
screen.addshape(emojis[r])
self.shape(emojis[r])
#self.shape("rock" + str(size)) #sets size and shape for asteroid
def getSize(self):#part of collision detection
return self.size
#getter and setter functions
def getDX(self):
return self.dx
def getDY(self):
return self.dy
def setDX(self,dx):
self.dx = dx
def setDY(self,dy):
self.dy = dy
def move(self):
x = self.xcor()
y = self.ycor()
#if on edge of screen. go to opposite side
x = (self.dx + x - screenMinX) % (screenMaxX - screenMinX) + screenMinX
y = (self.dy + y - screenMinY) % (screenMaxY - screenMinY) + screenMinY
self.goto(x,y)
def blowUp(self):
self.goto(-300,0)#function that makes something go off the screen
def getRadius(self):
return self.size * 10 - 5
class SpaceShip(Turtle):
def __init__(self,screen,dx,dy,x,y):
Turtle.__init__(self)
self.speed(0)
self.penup()
self.color("white")
self.goto(x,y)
self.dx = dx
self.dy = dy
self.screen = screen
self.bullets = []
self.shape("turtle")
def move(self):
x = self.xcor()
y = self.ycor()
x = (self.dx + x - screenMinX) % (screenMaxX - screenMinX) + screenMinX
y = (self.dy + y - screenMinY) % (screenMaxY - screenMinY) + screenMinY
self.goto(x,y)
#logic for collision
def powPow(self, asteroids):
dasBullets = []
for bullet in self.bullets:
bullet.move()
hit = False
for asteroid in asteroids:
if intersect(asteroid, bullet):#counts every asteroid to see if it hits
asteroids.remove(asteroid)
asteroid.blowUp()
bullet.blowUp()
hit = True
if (not bullet.done() and not hit):
dasBullets.append(bullet)
self.bullets = dasBullets
def fireBullet(self):
self.bullets.append(Bullet(self.screen, self.xcor(), self.ycor(), self.heading()))
def fireEngine(self):#how turtle moves
angle = self.heading()
x = math.cos(math.radians(angle))
y = math.sin(math.radians(angle))
self.dx = self.dx + x#how it rotates
self.dy = self.dy + y
self.dx = self.dx / speed1
self.dy = self.dy / speed1
#extra function
def turnTowards(self,x,y):
if x < self.xcor():
self.left(7)
if x > self.xcor():
self.right(7)
def getRadius(self):
return 10
def getDX(self):
return self.dx
def getDY(self):
return self.dy
#collision detection
def intersect(object1,object2):
dist = math.sqrt((object1.xcor() - object2.xcor())**2 + (object1.ycor() - object2.ycor())**2)
radius1 = object1.getRadius()
radius2 = object2.getRadius()
# The following if statement could be written as
# return dist <= radius1+radius2
if dist <= radius1+radius2:
return True
else:
return False
#adds object to screen
screen.register_shape("rock3",((-20, -16),(-21, 0), (-20,18),(0,27),(17,15),(25,0),(16,-15),(0,-21)))
screen.register_shape("rock2",((-15, -10),(-16, 0), (-13,12),(0,19),(12,10),(20,0),(12,-10),(0,-13)))
screen.register_shape("rock1",((-10,-5),(-12,0),(-8,8),(0,13),(8,6),(14,0),(12,0),(8,-6),(0,-7)))
screen.register_shape("ship",((-10,-10),(0,-5),(10,-10),(0,10)))
screen.register_shape("bullet",((-2,-4),(-2,4),(2,4),(2,-4)))
#ship spawn exactly the middle everytime
ship = SpaceShip(screen,0,0,(screenMaxX-screenMinX)/2+screenMinX,(screenMaxY-screenMinY)/2 + screenMinY)
#randomize where they spawn
asteroids = []
for k in range(amountOfEmojis):
dx = random.random() * 6 - 3
dy = random.random() * 6 - 3
x = random.randrange(10) * (screenMaxX - screenMinX) + screenMinX
y = random.random() * (screenMaxY - screenMinY) + screenMinY
asteroid = Asteroid(screen,dx,dy,x,y,random.randint(1,3), emojis)
asteroids.append(asteroid)
def play():
# Tell all the elements of the game to move
ship.move()
gameover = False
for asteroid in asteroids:
r = random.randint(0, 1)
if r == 1:
asteroid.right(50)
else:
asteroid.left(20)
asteroid.move()
if intersect(ship,asteroid):
write("You Got Killed :(",font=("Verdana",25),align="center")
gameover = True
ship.powPow(asteroids)
screen.update()
if not asteroids:
color('green')
write("You Killed the Emojis!!",font=("Arial",30),align="center")
ht()
if not gameover:
screen.ontimer(play, 30)
bullets = []
#controls
def turnLeft():
ship.left(7)
def turnRight():
ship.right(7)
def go():
ship.fireEngine()
def fire():
ship.fireBullet()
ht()
screen.tracer(0);
screen.onkey(turnLeft, 'left')
screen.onkey(turnRight, 'right')
screen.onkey(go, 'up')
screen.onkey(fire, 'space')
screen.listen()
play()
谢谢！
答案 0 :(得分：1)
您可以尝试这样的事情：
import time
FIRE_DELAY = 0.1 # number of seconds between bullets
LAST_FIRE = 0
def fire():
t = time.time()
if t - LAST_FIRE > FIRE_DELAY:
LAST_FIRE = t
ship.fireBullet()