使用pythonturtle图形实现视频游戏时遇到的问题

Question

基本上，我要做的是使用Python的turtle模块创建一个双人游戏。在底部有两个海龟是玩家，顶部有两个圆圈作为检查点。一只乌龟应该在两个检查站之间来回穿梭，这只乌龟就是目标。底层海龟向目标射击。在

我的问题：

• 目标乌龟移动太快。在
• 底部海龟的子弹从屏幕中间产生。在

注意：代码的某些部分可能令人费解和/或不需要。在

代码如下：

from turtle import*
import math

def k1():#Enemy Key Commands
    enemy.left(90)
    enemy.forward(10)
    enemy.right(90)

def k2():
    enemy.left(90)
    enemy.backward(10)
    enemy.right(90)

def k3():#Yertle Key Commands
    yertle.left(90)
    yertle.forward(10)
    yertle.right(90)

def k4():
    yertle.left(90)
    yertle.backward(10)
    yertle.right(90)

def k5():
    a=bullet_red()
    a.speed(10)
    a.forward(400)
    collision= math.sqrt(math.pow(a.xcor()-yertle.xcor(),2)+math.pow(a.ycor()-yertle.ycor(),2))
    if(collision<10):
        text=enemy.write("Game Over", align="center" , font=("Arial", 16, "normal"))
    a.hideturtle()

def k6():
    a=bullet_blue()
    a.speed(10)
    a.forward(400)
    collision= math.sqrt(math.pow(a.xcor()-yertle.xcor(),2)+math.pow(a.ycor()-yertle.ycor(),2))
    if(collision<10):
        text=enemy.write("Game Over", align="center" , font=("Arial", 16, "normal"))
    a.hideturtle()

def collision(a, b):
    collision= math.sqrt(math.pow(a.xcor()-b.xcor(),2)+math.pow(a.ycor()-b.ycor(),2))
    if(collision<5):
        print("Bottom Player Wins")
        print("Game Over")


def bullet_red():
    bullet=Turtle("circle")#Description For Bullet
    bullet.color("red")
    bullet.penup()
    bullet.goto(enemy.pos())
    bullet.setheading(180)
    bullet.right(90)
    return bullet

def bullet_blue():
    bullet=Turtle("circle")#Description For Bullet
    bullet.color("blue")
    bullet.penup()
    bullet.goto(yertle.pos())
    bullet.setheading(180)
    bullet.right(90)
    return bullet

ops = Screen()
ops.setup(500, 500)
ops.onkey(k1, "a")#Enemy
ops.onkey(k2, "d")#Enemy
ops.onkey(k3, "Left")#Yertle
ops.onkey(k4, "Right")#Yertle
ops.onkey(k5, "w")#Shoot(Enemy)
ops.onkey(k6, "Up")#Shoot(Enemy)
ops.listen()



checkpoint_1=Turtle(shape="circle")#Turtle Description for Checkpoint 1
checkpoint_1.color("red")
checkpoint_1.setheading(180)
checkpoint_1.right(90)
checkpoint_1.penup()
checkpoint_1.setx(-220)
checkpoint_1.sety(230)
checkpoint_1.speed(0)
#_____________________________

checkpoint_2=Turtle(shape="circle")#Turtle Description for Checkpoint 2
checkpoint_2.color("red")
checkpoint_2.setheading(180)
checkpoint_2.right(90)
checkpoint_2.penup()
checkpoint_2.setx(220)
checkpoint_2.sety(230)
checkpoint_2.speed(0)

#____________________________
runner=Turtle(shape="turtle")#Turtle Description for Checkpoint 2
runner.color("yellow")
while(runner!=collision):
    runner.penup()
    runner.goto(checkpoint_1.pos())
    runner.goto(checkpoint_2.pos())
    runner.speed(0)
    #_____________________________

enemy=Turtle(shape="turtle")#Turtle Description for Player 1
enemy.color("red")
enemy.setheading(180)
enemy.right(90)
enemy.penup()
enemy.setx(-20)
enemy.sety(-200)
enemy.speed(0)

    #_____________________________

yertle = Turtle(shape="turtle")#Turtle Description for Player 2
yertle.color("blue")
yertle.setheading(180)
yertle.right(90)
yertle.penup() 
yertle.setx(20)
yertle.sety(-200)
yertle.speed(0)
    #_____________________________

Answer 1

下面是我对你的代码进行的返工，使它基本上只玩游戏，它仍然需要工作成为一个完成的程序。在

from turtle import Turtle, Screen

FONT = ("Arial", 32, "bold")

def k1():  # Enemy Key Commands
    enemy.backward(10)

def k2():
    enemy.forward(10)

def k3():  # Yertle Key Commands
    yertle.backward(10)

def k4():
    yertle.forward(10)

def k5():  # enemy shoot
    bullet.color("red")
    bullet.goto(enemy.position())
    bullet.showturtle()

    bullet.forward(430)

    if bullet.distance(runner) < 10:
        magic_marker.write("Game Over", align="center", font=FONT)

    bullet.hideturtle()

def k6():  # yertle shoot
    bullet.color("blue")
    bullet.goto(yertle.position())
    bullet.showturtle()

    bullet.forward(430)

    if bullet.distance(runner) < 10:
        magic_marker.write("Game Over", align="center", font=FONT)

    bullet.hideturtle()

def move_runner():
    if runner.distance(checkpoint_1) < 5 or runner.distance(checkpoint_2) < 5:
        runner.left(180)
    runner.forward(2)

    screen.ontimer(move_runner, 50)

screen = Screen()
screen.setup(500, 500)

bullet = Turtle("circle", visible=False)  # Description For Bullet
bullet.speed('normal')
bullet.penup()
bullet.setheading(90)

checkpoint_1 = Turtle("circle", visible=False)  # Turtle Description for Checkpoint 1
checkpoint_1.color("red")
checkpoint_1.penup()
checkpoint_1.goto(-220, 230)

checkpoint_2 = checkpoint_1.clone()  # Turtle Description for Checkpoint 2
checkpoint_2.goto(220, 230)

runner = Turtle("turtle", visible=False)
runner.color("orange")
runner.speed('fastest')
runner.penup()
runner.sety(230)

yertle = Turtle(shape="turtle", visible=False)  # Turtle Description for Player 1
yertle.tiltangle(90)  # face one way but move another!
yertle.speed('fastest')
yertle.penup()
yertle.color("blue")
yertle.goto(20, -200)

enemy = yertle.clone()  # Turtle Description for Player 2
enemy.color("red")
enemy.goto(-20, -200)

checkpoint_1.showturtle()
checkpoint_2.showturtle()
runner.showturtle()
yertle.showturtle()
enemy.showturtle()

magic_marker = Turtle(visible=False)  # for writing text

screen.onkey(k1, "a")  # Enemy
screen.onkey(k2, "d")  # Enemy
screen.onkey(k3, "Left")  # Yertle
screen.onkey(k4, "Right")  # Yertle
screen.onkey(k5, "w")  # Shoot(Enemy)
screen.onkey(k6, "Up")  # Shoot(Yertle)
screen.listen()

move_runner()

screen.mainloop()

你的代码有错误（就像你的评论一样），但是我的主要建议是查看turtle文档，看看你在编写游戏时可以使用的所有特性，你需要知道海龟能做什么。在

我把子弹换成了一个共享的子弹海龟不会在你用完子弹后离开，所以这似乎是更好的资源。不过，它也是小车。如果您继续使用单子弹模型，您将希望联锁点火事件以防止重叠。如果您使用多个子弹同时发射，您将需要添加更多的ontimer事件，比如runner用于控制它们的运动。在