制作烟花

Question

在我的循环结束时，它应该返回并显示start和burst，就像程序第一次运行时一样。

我试着把东西搬来搬去让它工作。我给我的乌龟添加了一个重置和清除，但它不能正常运行。

#import modules
import turtle
import random

#set screen size
win = turtle.Screen()
win.screensize (600,600)

#set turtle for firework
start = turtle.Turtle()
#set turtles for burst
burst1 = turtle.Turtle()

line = random.randint(10, 35)
line2 = random.randint(10, 15)

#background color


#start firework (base)(clear after each step?)


def base():
    for x in range(1):
        start.ht()
        start.up()
        start.goto(random.randint(-100, 100), -300)
        start.down()
        start.setheading(90)
        for x in range(line):
               start.forward(5)
               start.up()
               start.forward(5)
               start.down()
               start.clear()
        start.clear()

#burst
def burst():
    head = 45
    turtle.tracer(0,0)
    for x in range(20):
        burst1.ht()
        burst1.up()
        burst1.goto(start.xcor(),start.ycor())
        burst1.down()
        burst1.setheading(head)
        for x in range(line2):
            burst1.forward(5)
            burst1.up()
            burst1.forward(5)
            burst1.down()
            head = head + 15
            turtle.update()
        

#reset
while True:
    base()
    burst()
    start.reset()
    burst1.reset()

Answer 1

现在你已经让它以你想要的方式工作了，让我们微调一下海龟的用法。这稍微改变了外观，但实际上是关于适当的技术。首先，不要使用screensize()，它不会做你想做的事情，使用setup()。

接下来，不要在像turtle这样的事件驱动环境中使用while True:。我们可以使用ontimer()事件来代替。这允许up使用exitonclick()通过单击窗口来干净地结束模拟。

让我们避免清除屏幕，这会导致需要重做bgcolor("black")，而不是清除屏幕上的乌龟绘图。因为我们使用的是tracer()，所以我们可以使用额外的update()调用，并且我们不再需要speed()调用。下面是修改后的代码：

from turtle import Screen, Turtle
from random import randint, choice

COLORS = [
    '#FFFFFF', '#FF0000', '#00FF00', '#0000FF', '#FFFF00',
    '#00FFFF', '#FF00FF', '#C0C0C0', '#808080', '#800000',
    '#808000', '#008000', '#800080', '#008080', '#000080',
]

def launch():
    rocket.penup()
    rocket.goto(randint(-100, 100), -300)
    rocket.pendown()

    for _ in range(randint(5, 45)):
        rocket.forward(5)
        rocket.penup()
        rocket.forward(5)
        rocket.pendown()

        screen.update()
        rocket.clear()

def burst():
    angle = 15

    for _ in range(360 // angle):
        firework.penup()
        firework.goto(rocket.position())
        firework.pendown()
        firework.setheading(angle)

        for _ in range(5):
            firework.color(choice(COLORS))
            firework.forward(randint(3, 15))
            firework.penup()
            firework.forward(randint(3, 15))
            firework.pendown()

        angle += 15

    screen.update()

def display():
    firework.clear()
    launch()
    burst()

    screen.ontimer(display, randint(75, 750))

screen = Screen()
screen.setup(600, 600)
screen.bgcolor('black')
screen.tracer(False)

rocket = Turtle()
rocket.hideturtle()
rocket.color('white')
rocket.setheading(90)

firework = Turtle()
firework.hideturtle()
firework.pensize(3)

display()

screen.exitonclick()

Answer 2

想明白了！多半是。很抱歉，第一篇文章的措辞很糟糕。

#import modules
import turtle
import random
import time
#set screen size
win = turtle.Screen()
win.screensize (600,600)

#set turtle for firework
start = turtle.Turtle()
#set turtles for burst
burst1 = turtle.Turtle()

burst1.ht()
colors = ["#FFFFFF","#FF0000","#00FF00","#0000FF","#FFFF00","#00FFFF","#FF00FF","#C0C0C0","#808080","#800000","#808000","#008000","#800080","#008080","#000080"]

#background color


#start firework (base)(clear after each step?)


def base():
    for x in range(1):
        start.ht()
        start.pencolor("White")
        start.speed(0)
        start.up()
        start.goto(random.randint(-100,100),-300)
        start.down()
        start.setheading(90)
        for x in range(random.randint(5, 45)):
               start.forward(5)
               start.up()
               start.forward(5)
               start.down()
               start.clear()

#burst
def burst():
    head = 15
    burst1.speed(0)
    burst1.pensize(3)
    for x in range(25):
        turtle.tracer(0,0)
        burst1.ht()
        burst1.up()
        burst1.goto(start.xcor(),start.ycor())
        burst1.down()
        burst1.setheading(head)
        for x in range(5):
            burst1.color(random.choice(colors))
            burst1.forward(random.randint(3, 15))
            burst1.up()
            burst1.forward(random.randint(3, 15))
            burst1.down()
            head = head + 15
            turtle.update()
        

#reset
while True:
    win.bgcolor("black")
    base()
    burst()
    turtle.clearscreen()

Answer 3

@cdlane -这是我昨晚在弄清楚我之前发布的内容后想出来的。我将使用您的一些建议/示例来清理我的代码。非常感谢你的帮助/知识！请随时运行此程序，并让我知道您的想法。

#import modules
import turtle
import random
import time
#set screen size
win = turtle.Screen()
win.screensize (600,600)

#set turtle for firework
start = turtle.Turtle()
#set turtles for burst
burst1 = turtle.Turtle()
burst2 = turtle.Turtle()
build = turtle.Turtle()

burst1.ht()
colors = ["#FF0000","#00FF00","#0000FF","#FFFF00","#00FFFF","#FF00FF","#C0C0C0","#808080","#800000","#808000","#008000","#800080","#008080","#000080"]

#background color


#start firework (base)(clear after each step?)

def building():
    build.ht()
    build.pencolor("white")
    build.speed(10)
    build.up()
    build.goto(-350,-300)
    build.down()
    build.setheading(0)
    build.forward(10)
    for x in range(10):
        build.setheading(90)
        build1 = random.randint(10,50)
        build.forward(build1)
        build.setheading(0)
        build.forward(random.randint(10,20))
        build.setheading(270)
        build.forward(build1)
        build.setheading(0)
        build.forward(random.randint(1,20))
    build.pencolor("black")
    build.forward(25)
    build.pencolor("white")
    build.forward(10)
    for x in range(10):
        build.setheading(90)
        build1 = random.randint(10,50)
        build.forward(build1)
        build.setheading(0)
        build.forward(random.randint(10,20))
        build.setheading(270)
        build.forward(build1)
        build.setheading(0)
        build.forward(random.randint(1,20))
    


def base():
    for x in range(1):
        start.ht()
        start.pencolor("White")
        start.pensize(1)
        start.speed(0)
        start.up()
        start.goto(random.randint(-300,300),-300)
        start.down()
        start.setheading(90)
        for x in range(random.randint(5, 45)):
               start.forward(5)
               start.up()
               start.forward(5)
               start.down()
               start.clear()

#burst
def burst():
    head = 15
    burst1.speed(0)
    burst1.pensize(2)
    for x in range(25):
        turtle.tracer(10,0)
        burst1.ht()
        burst1.up()
        burst1.goto(start.xcor(),start.ycor())
        burst1.down()
        burst1.setheading(head)
        for x in range(5):
            burst1.color(random.choice(colors))
            burst1.forward(random.randint(3, 15))
            burst1.up()
            burst1.forward(random.randint(3, 15))
            burst1.down()
            head = head + 15
            turtle.update()

def small_burst():
    head = 15
    burst2.speed(0)
    burst2.pensize(1)
    for x in range(25):
        turtle.tracer(10,0)
        burst2.ht()
        burst2.up()
        burst2.goto(start.xcor(),start.ycor())
        burst2.down()
        burst2.setheading(head)
        for x in range(5):
            burst2.color(random.choice(colors))
            burst2.forward(random.randint(2, 5))
            burst2.up()
            burst2.forward(random.randint(2, 10))
            burst2.down()
            head = head + 15
            turtle.update()
        

#reset
while True:
    win.bgcolor("black")
    building()
    base()
    burst()
    base()
    small_burst()
    base()
    small_burst()
    turtle.clearscreen()