如何子弹限制火力以及如何

问题描述

from tkinter import *

from time import sleep

import random                        

class Ball:

    def __init__(self,canvas,color,size,x,y,xspeed,yspeed):
        self.canvas = canvas 
        self.color = color 
        self.size = size 
        self.x = x 
        self.y = y 
        self.xspeed = xspeed 
        self.yspeed = yspeed
        self.id=canvas.create_oval(x,x+size,y+size,fill=color)
    def move(self): 
        self.canvas.move(self.id,self.xspeed,self.yspeed)
        (x1,y1,x2,y2)=self.canvas.coords(self.id)
        (self.x,self.y)=(x1,y1)
        if x1<=0 or x2>=WIDTH:         
            self.xspeed=-self.xspeed
        if y1<=0 or y2>=HEIGHT:
            self.yspeed=-self.yspeed

WIDTH=800

HEIGHT=400

bullets=[]

def fire(event):

    bullets.append(Ball(canvas,10,"red",100,200,0))
##    global bullet_count
##    bullet_count=0

window = Tk()

canvas = Canvas(window,width=WIDTH,height=HEIGHT)

canvas.pack()

canvas.bind("<Button-1>",fire)


spaceship = Ball(canvas,"green",0)

enemy = Ball(canvas,500,5)


while True:

    for bullet in bullets:
        bullet.move()
        if (bullet.x+bullet.size) >= WIDTH:
            canvas.delete(bullet.id)
            bullets.remove(bullet)
            if (bullet_count<9):
                bullet_count+=1
            else:
                id=canvas.create_text(100,50,fill="red",font="Times 30 italic 
                     bold",text="Hello World")
                break

    enemy.move()
    window.update()
    sleep(0.03)

我只想发射 10 发子弹，如果没有剩余子弹，我想创建一个像 id = canvas.create_text(100,font="Times 30 italic bold",text="Hello World") 这样的消息框。请帮我。我不擅长python

解决方法

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