Python小例子——使用pygame应用：飞机大战（六 显示敌机）

#coding=utf-8
import pygame
from pygame.locals import *

'''
    6. 显示敌人飞机
'''

class HeroPlane(object):

    def __init__(self,screen):

        #设置飞机默认的位置
        self.x = 150
        self.y = 480

        #设置要显示内容的窗口
        self.screen = screen

        self.imageName = "hero0.png"
        self.image = pygame.image.load(self.imageName).convert()

        #用来存储英雄飞机发射的所有子弹
        self.bulletList = []

    def display(self):
        self.screen.blit(self.image,(self.x,self.y))

        for bullet in self.bulletList:
            bullet.display()#显示一个子弹的位置
            bullet.move()#让这个子弹进行移动，下次再显示的时候就会看到子弹在修改后的位置

    def moveLeft(self):
        self.x -= 10

    def moveRight(self):
        self.x += 10

    def moveUp(self):
        self.y -= 10

    def moveDown(self):
        self.y += 10

    def sheBullet(self):
        newBullet = Bullet(self.x, self.y, self.screen)
        self.bulletList.append(newBullet)

class Bullet(object):
    def __init__(self,x,y,screen):
        self.x = x+15
        self.y = y-15
        self.screen = screen
        self.image = pygame.image.load("bullet.png").convert()

    def move(self):
        self.y -= 5

    def display(self):
        self.screen.blit(self.image,(self.x,self.y))

class EnemyPlane(object):
    def __init__(self,screen):
        #设置飞机默认的位置
        self.x = 0
        self.y = 0

        #设置要显示内容的窗口
        self.screen = screen

        self.imageName = "airplane.png"
        self.image = pygame.image.load(self.imageName).convert()

    def display(self):
        self.screen.blit(self.image,(self.x,self.y))

def key_control(heroPlane):
    #判断是否是点击了退出按钮
    for event in pygame.event.get():
        # print(event.type)
        if event.type == QUIT:
            print("exit")
            exit()
        elif event.type == KEYDOWN:
            if event.key == K_a or event.key == K_LEFT:
                print('left')
                heroPlane.moveLeft()
                #控制飞机让其向左移动
            elif event.key == K_d or event.key == K_RIGHT:
                print('right')
                heroPlane.moveRight()
            elif event.key == K_w or event.key == K_UP:
                print('up')
                # 控制飞机让其向上移动
                heroPlane.moveUp()
            elif event.key == K_s or event.key == K_DOWN:
                print('down')
                # 控制飞机让其向下移动
                heroPlane.moveDown()
            elif event.key == K_SPACE:
                print('space')
                heroPlane.sheBullet()

def main():
    #1. 创建一个窗口，用来显示内容
    screen = pygame.display.set_mode((400,654),0,32)

    #2. 创建一个和窗口大小的图片，用来充当背景
    background = pygame.image.load("background.png").convert()

    #3.1 创建一个飞机对象
    heroPlane = HeroPlane(screen)
    #3.2 创建一个敌人飞机
    enemyPlane = EnemyPlane(screen)

    #4. 把背景图片放到窗口中显示
    while True:
        screen.blit(background,(0,0))

        heroPlane.display()
        enemyPlane.display()

        key_control(heroPlane)

        pygame.display.update()

if __name__ == "__main__":
    main()

运行程序，结果如下：