用pygame實現打飛機游戲-5-發射子彈

#coding=utf-8
import pygame
#導入pygame模塊
from pygame.locals import *
#導入檢測鍵盤的子模塊
class AircraftCoordinate(object):
    def __init__(self,screen):
        #設置飛機默認的位置
        self.x = 250
        self.y = 600
        self.screen =screen
        #設置要顯示的內容的窗口
        self.imagePath = "./feiji/hero.gif"
        self.aircraftImageFile = pygame.image.load(self.imagePath).convert()
        self.aircraftBullet = []
        #在默認值中定義一個aircraftBullet列表
    def display(self):
        self.screen.blit(self.aircraftImageFile,(self.x,self.y))

        for bullet in self.aircraftBullet:
            bullet.display()
            bullet.move()
        #無限顯示子彈，即按空格就顯示子彈
    def moveLeft(self):
        self.x -= 20
    def moveRight(self):
        self.x += 20
    def moveUp(self):
        self.y -= 20
    def moveDown(self):
        self.y += 20
    def shoot(self):
        newBullet = BulletCoordinate(self.x,self.y,self.screen)
        #定義一個newBullet變量，傳x,y,screen到BulletCoordinate類中
        self.aircraftBullet.append(newBullet)
        #在aircraftBullet中創建新子彈
class BulletCoordinate(object):
     def __init__(self,x,y,screen):
         #定義默認值，接收從飛機類中傳過來的參數
         self.x = x+40
         self.y = y-20
         self.screen = screen
         self.imagePath = "./feiji/bullet-3.gif"
         self.bulletImageFile = pygame.image.load(self.imagePath).convert()
     def move(self):
         self.y -= 0.5
     def display(self):
         self.screen.blit(self.bulletImageFile,(self.x,self.y))
     


if __name__ == '__main__':
#__name__變量，判斷該模塊是作為腳本被執行，還是被調用，當直接執行的時候，就是main，在被別人調用的時候，就是name
    screen = pygame.display.set_mode((480,980),0,32)
#設置屏幕，0,32是默認值
    bgImageFile = './feiji/background.png'
#導入圖片
    background = pygame.image.load(bgImageFile).convert()
#背景用background保存
    aircraft = AircraftCoordinate(screen)
    #aircraftImageFile =  './feiji/hero.gif'
    #導入飛機圖片
    #aircraft = pygame.image.load(aircraftImageFile).convert()
    #飛機圖用aircraft保存

while True:
    screen.blit(background,(0,0))
    #設置背景在屏幕的坐標，0.0是左上角的坐標。
    #screen.blit(aircraft,(x,y))
    #設置飛機在屏幕的坐標

    aircraft.display()
    for event in pygame.event.get():
        #在發生的事件當中循環，意思可以等同於獲取所有的鍵盤操作
        if event.type == QUIT:
            #判斷是否是按下了關閉鍵
            print("exit")
            exit()
            #退出程序
        elif event.type ==KEYDOWN:
            #判斷是否按下了按鍵
            if event.key == K_a or event.key == K_LEFT:
            #判斷是否按下了a鍵或者左鍵
                print('左')
                aircraft.moveLeft()
            elif event.key == K_d or event.key == K_RIGHT:
            #判斷是否按下了d鍵或者右鍵
                print('右')
                aircraft.moveRight()
            elif event.key == K_w or event.key == K_UP:
            #判斷是否按下了w鍵或者上鍵
                print('上')
                aircraft.moveUp()
            elif event.key == K_s or event.key == K_DOWN:
            #判斷是否按下了s鍵或者下鍵
                print('下')
                aircraft.moveDown()
            elif event.key == K_SPACE:
            #判斷是否按下了空格鍵
                print('射子彈')
                aircraft.shoot()

    pygame.display.update()
    #更新屏幕