93B《零基礎入門學習Python》筆記 第093講：Pygame：飛機大戰4 下

這節課實現的完整代碼如下：

#main.py








import pygame








import sys








import traceback #为了更好地退出








import myplane








import enemy








import bullet








 








from pygame.locals import *








 








pygame.init()








pygame.mixer.init()  #混音器初始化








 








bg_size = width, height = 480, 700








screen = pygame.display.set_mode(bg_size)








pygame.display.set_caption("飞机大战 -- Python Demo")








 








background = pygame.image.load("images/background.png").convert()








 








#生成一些颜色








BLACK = (0, 0, 0)








GREEN = (0, 255, 0)








RED = (255, 0, 0)








 








# 载入游戏音乐








pygame.mixer.music.load("sound/game_music.ogg")








pygame.mixer.music.set_volume(0.2)








bullet_sound = pygame.mixer.Sound("sound/bullet.wav")








bullet_sound.set_volume(0.2)








bomb_sound = pygame.mixer.Sound("sound/use_bomb.wav")








bomb_sound.set_volume(0.2)








supply_sound = pygame.mixer.Sound("sound/supply.wav")








supply_sound.set_volume(0.2)








get_bomb_sound = pygame.mixer.Sound("sound/get_bomb.wav")








get_bomb_sound.set_volume(0.2)








get_bullet_sound = pygame.mixer.Sound("sound/get_bullet.wav")








get_bullet_sound.set_volume(0.2)








upgrade_sound = pygame.mixer.Sound("sound/upgrade.wav")








upgrade_sound.set_volume(0.2)








enemy3_fly_sound = pygame.mixer.Sound("sound/enemy3_flying.wav")








enemy3_fly_sound.set_volume(0.5)








enemy1_down_sound = pygame.mixer.Sound("sound/enemy1_down.wav")








enemy1_down_sound.set_volume(0.2)








enemy2_down_sound = pygame.mixer.Sound("sound/enemy2_down.wav")








enemy2_down_sound.set_volume(0.2)








enemy3_down_sound = pygame.mixer.Sound("sound/enemy3_down.wav")








enemy3_down_sound.set_volume(0.5)








me_down_sound = pygame.mixer.Sound("sound/me_down.wav")








me_down_sound.set_volume(0.2)








 








def add_small_enemies(group1, group2, num):








        for i in range(num):








                e1 = enemy.SmallEnemy(bg_size)








                group1.add(e1)








                group2.add(e1)








 








def add_mid_enemies(group1, group2, num):








        for i in range(num):








                e2 = enemy.MidEnemy(bg_size)








                group1.add(e2)








                group2.add(e2)








 








def add_big_enemies(group1, group2, num):








        for i in range(num):








                e3 = enemy.BigEnemy(bg_size)








                group1.add(e3)








                group2.add(e3)








 








def main():








        pygame.mixer.music.play(-1)








 








        # 生成我方飞机








        me = myplane.Myplane(bg_size)








 








        #生成敌方飞机








        enemies = pygame.sprite.Group()








 








        # 生成敌方小型飞机








        small_enemies = pygame.sprite.Group()








        add_small_enemies(small_enemies, enemies, 15)








 








        # 生成敌方中型飞机








        mid_enemies = pygame.sprite.Group()








        add_mid_enemies(mid_enemies, enemies, 4)








 








        # 生成敌方大型飞机








        big_enemies = pygame.sprite.Group()








        add_big_enemies(big_enemies, enemies, 2)








 








        # 生成普通子弹








        bullet1 = []








        bullet1_index = 0








        BULLET1_NUM = 4








        for i in range(BULLET1_NUM):








                bullet1.append(bullet.Bullet1(me.rect.midtop)) #me.rect.midtop：机头位置








        








        clock = pygame.time.Clock()








 








        #中弹图片索引








        e1_destroy_index = 0








        e2_destroy_index = 0








        e3_destroy_index = 0








        me_destroy_index = 0








 








        #用于切换图片








        switch_image = True








 








        #用于延迟








        delay = 100








 








        running = True








 








        while running:








                for event in pygame.event.get():








                        if event.type == QUIT:








                                pygame.quit()








                                sys.exit()








                                








                #检测用户的键盘操作








                key_pressed = pygame.key.get_pressed()








 








                if key_pressed[K_w] or key_pressed[K_UP]:








                        me.moveUp()








                if key_pressed[K_s] or key_pressed[K_DOWN]:








                        me.moveDown()








                if key_pressed[K_a] or key_pressed[K_LEFT]:








                        me.moveLeft()








                if key_pressed[K_d] or key_pressed[K_RIGHT]:








                        me.moveRight()                        








 








                screen.blit(background, (0, 0))








 








                # 发射子弹








                if not(delay % 10):








                        bullet1[bullet1_index].reset(me.rect.midtop)








                        bullet1_index = (bullet1_index + 1) % BULLET1_NUM








 








                # 检测子弹是否击中敌机








                for b in bullet1:








                        if b.active:








                                b.move()








                                screen.blit(b.image, b.rect)








                                enemy_hit = pygame.sprite.spritecollide(b, enemies, False, pygame.sprite.collide_mask)








                                if enemy_hit:                                        








                                        b.active = False                                        








                                        for e in enemy_hit:








                                                if e in mid_enemies or e in big_enemies:








                                                        e.hit = True








                                                        e.energy -= 1








                                                        if e.energy == 0:








                                                                  e.active = False








                                                else:#是小型敌机








                                                        e.active = False








              








                #绘制大型敌机








                for each in big_enemies:








                        if each.active: #检测是否还活着








                                each.move()








                                if each.hit:








                                        #绘制被击中的特效








                                        screen.blit(each.image_hit, each.rect)








                                        each.hit = False








                                else:








                                        if switch_image:








                                                screen.blit(each.image1, each.rect)








                                        else:








                                                screen.blit(each.image2, each.rect)








 








                                # 绘制血槽








                                pygame.draw.line(screen, BLACK, \








                                                 (each.rect.left, each.rect.top - 5), \








                                                 (each.rect.right, each.rect.top - 5), \








                                                 2)








                                # 当生命大于20%显示绿色，否则显示红色








                                energy_remain = each.energy / enemy.BigEnemy.energy








                                if energy_remain > 0.2:








                                        energy_color = GREEN








                                else:








                                        energy_color = RED








                                pygame.draw.line(screen, energy_color, \








                                                 (each.rect.left, each.rect.top - 5), \








                                                 (each.rect.left + each.rect.width * energy_remain, \








                                                  each.rect.top - 5),








                                                 2)








                                








                                #即将出现在界面中，播放音效








                                if each.rect.bottom == -50:








                                        enemy3_fly_sound.play(-1) #循环播放








                        else:








                                #坠机








                                if not(delay % 3):








                                        if e3_destroy_index == 0:








                                                enemy3_down_sound.play()








                                        screen.blit(each.destroy_images[e3_destroy_index], each.rect)








                                        e3_destroy_index = (e3_destroy_index + 1) % 6








                                        if e3_destroy_index == 0:








                                                enemy3_fly_sound.stop() #循环音效停止播放








                                                each.reset()








                                








                #绘制中型敌机








                for each in mid_enemies:








                        if each.active: #检测是否还活着








                                each.move()








                                if each.hit:








                                        #绘制被击中的特效








                                        screen.blit(each.image_hit, each.rect)








                                        each.hit = False








                                else:








                                        screen.blit(each.image, each.rect)








 








                                # 绘制血槽








                                pygame.draw.line(screen, BLACK, \








                                                 (each.rect.left, each.rect.top - 5), \








                                                 (each.rect.right, each.rect.top - 5), \








                                                 2)








                                # 当生命大于20%显示绿色，否则显示红色








                                energy_remain = each.energy / enemy.MidEnemy.energy








                                if energy_remain > 0.2:








                                        energy_color = GREEN








                                else:








                                        energy_color = RED








                                pygame.draw.line(screen, energy_color, \








                                                 (each.rect.left, each.rect.top - 5), \








                                                 (each.rect.left + each.rect.width * energy_remain, \








                                                  each.rect.top - 5), 2)








                        else:








                                #坠机








                                if not(delay % 3):








                                        if e2_destroy_index == 0:








                                                enemy2_down_sound.play() #音效








                                        screen.blit(each.destroy_images[e2_destroy_index], each.rect)








                                        e2_destroy_index = (e2_destroy_index + 1) % 4








                                        if e2_destroy_index == 0:








                                                each.reset()








 








                #绘制小型敌机








                for each in small_enemies:








                        if each.active: #检测是否还活着








                                each.move()                     








                                screen.blit(each.image, each.rect)








                        else:








                                #坠机








                                if not(delay % 3):








                                        if e1_destroy_index == 0:








                                                enemy1_down_sound.play() #音效                                








                                        screen.blit(each.destroy_images[e1_destroy_index], each.rect)








                                        e1_destroy_index = (e1_destroy_index + 1) % 4








                                        if e1_destroy_index == 0:








                                                each.reset()








        








                #检测我方飞机是否被撞








                enemies_down = pygame.sprite.spritecollide(me, enemies, False, pygame.sprite.collide_mask)








                if enemies_down:








                        #me.active = False








                        for e in enemies_down:








                                e.active = False








                                








                








                #绘制我方飞机








                if me.active: #检测是否还活着








                        if switch_image:








                                screen.blit(me.image1, me.rect)








                        else:








                                screen.blit(me.image2, me.rect)








                else:








                        #坠机








                        if not(delay % 3):








                                if me_destroy_index == 0:








                                        me_down_sound.play()                        








                                screen.blit(me.destroy_images[me_destroy_index], me.rect)








                                me_destroy_index = (me_destroy_index + 1) % 4








                                if me_destroy_index == 0:








                                        print("game over")








                                        running = False








 








                #切换图片








                if not(delay % 5):  #5帧切换一次，一秒就只切换12次








                        switch_image = not switch_image                        








 








                delay -= 1








                if not delay:








                        delay = 100








 








                pygame.display.flip()








 








                clock.tick(60)








 








if __name__ == "__main__":








        try:








                main()








        except SystemExit:








                pass








        except:








                traceback.print_exc()








                pygame.quit()








                input()

#myplane.py








import pygame








 








class Myplane(pygame.sprite.Sprite):








        def __init__(self, bg_size):








                pygame.sprite.Sprite.__init__(self)








 








                self.image1 = pygame.image.load("images/me1.png").convert_alpha()








                self.image2 = pygame.image.load("images/me2.png").convert_alpha()








                #添加坠机图片








                self.destroy_images = []








                self.destroy_images.extend([\








                    pygame.image.load("images/me_destroy_1.png").convert_alpha(), \








                    pygame.image.load("images/me_destroy_2.png").convert_alpha(), \








                    pygame.image.load("images/me_destroy_3.png").convert_alpha(), \








                    pygame.image.load("images/me_destroy_4.png").convert_alpha() \








                    ])








                self.rect = self.image1.get_rect()








                self.width, self.height = bg_size[0], bg_size[1]








                self.rect.left, self.rect.top = \








                                (self.width - self.rect.width) // 2, \








                                self.height - self.rect.height - 60  #减60，留给状态栏








                self.speed = 10








                self.active = True








                self.mask = pygame.mask.from_surface(self.image1) #将非透明部分标记为mask








 








        def moveUp(self):








                if self.rect.top > 0:








                        self.rect.top -= self.speed








                else:








                        self.rect.top = 0








 








        def moveDown(self):








                if self.rect.bottom < self.height - 60:








                        self.rect.top += self.speed








                else:








                        self.rect.bottom = self.height - 60








 








        def moveLeft(self):








                if self.rect.left > 0:








                        self.rect.left -= self.speed








                else:








                        self.rect.left = 0








 








        def moveRight(self):








                if self.rect.right < self.width:








                        self.rect.left += self.speed








                else:








                        self.rect.right = self.width

#enemy.py








import pygame








from random import *








 








class SmallEnemy(pygame.sprite.Sprite):








        def __init__(self, bg_size):








                pygame.sprite.Sprite.__init__(self)








 








                self.image = pygame.image.load("images/enemy1.png").convert_alpha()








                #添加坠机图片








                self.destroy_images = []








                self.destroy_images.extend([\








                        pygame.image.load("images/enemy1_down1.png").convert_alpha(), \








                        pygame.image.load("images/enemy1_down2.png").convert_alpha(), \








                        pygame.image.load("images/enemy1_down3.png").convert_alpha(), \








                        pygame.image.load("images/enemy1_down4.png").convert_alpha() \








                        ])








                self.rect = self.image.get_rect()








                self.width, self.height = bg_size[0], bg_size[1]








                self.speed = 2








                self.active = True








                self.rect.left, self.rect.top = \








                                randint(0, self.width - self.rect.width), \








                                randint(-5 * self.height, 0)  #在页面外部上方5个屏幕高度范围内随机生成一个敌机








                self.mask = pygame.mask.from_surface(self.image) #将非透明部分标记为mask








 








        def move(self):








                if self.rect.top < self.height:








                        self.rect.top += self.speed








                else:








                        self.reset()








 








        def reset(self):








                self.active = True








                self.rect.left, self.rect.top = \








                                randint(0, self.width - self.rect.width), \








                                randint(-5 * self.height, 0)








 








class MidEnemy(pygame.sprite.Sprite):








        energy = 8








        








        def __init__(self, bg_size):








                pygame.sprite.Sprite.__init__(self)








 








                self.image = pygame.image.load("images/enemy2.png").convert_alpha()








                self.image_hit = pygame.image.load("images/enemy2_hit.png").convert_alpha()#中弹图片








                #添加坠机图片








                self.destroy_images = []








                self.destroy_images.extend([\








                        pygame.image.load("images/enemy2_down1.png").convert_alpha(), \








                        pygame.image.load("images/enemy2_down2.png").convert_alpha(), \








                        pygame.image.load("images/enemy2_down3.png").convert_alpha(), \








                        pygame.image.load("images/enemy2_down4.png").convert_alpha() \








                        ])








                self.rect = self.image.get_rect()








                self.width, self.height = bg_size[0], bg_size[1]








                self.speed = 1








                self.active = True








                self.rect.left, self.rect.top = \








                                randint(0, self.width - self.rect.width), \








                                randint(-10 * self.height, -self.height) #在页面外部上方1个到10个屏幕高度范围内随机生成一个敌机（1-10个，就保证了不会一开始出大一个大的）








                self.mask = pygame.mask.from_surface(self.image) #将非透明部分标记为mask








                self.energy = MidEnemy.energy








                self.hit = False  #检测是否被击中的属性








 








        def move(self):








                if self.rect.top < self.height:








                        self.rect.top += self.speed








                else:








                        self.reset()








 








        def reset(self):








                self.active = True








                self.enery = MidEnemy.energy








                self.rect.left, self.rect.top = \








                                randint(0, self.width - self.rect.width), \








                                randint(-10 * self.height, -self.height)








 








class BigEnemy(pygame.sprite.Sprite):








        energy = 20








        








        def __init__(self, bg_size):








                pygame.sprite.Sprite.__init__(self)








 








                #大型敌机有飞行特效，两张图片切换








                self.image1 = pygame.image.load("images/enemy3_n1.png").convert_alpha()








                self.image2 = pygame.image.load("images/enemy3_n2.png").convert_alpha()








                self.image_hit = pygame.image.load("images/enemy3_hit.png").convert_alpha()#中弹图片








                #添加坠机图片








                self.destroy_images = []








                self.destroy_images.extend([\








                        pygame.image.load("images/enemy3_down1.png").convert_alpha(), \








                        pygame.image.load("images/enemy3_down2.png").convert_alpha(), \








                        pygame.image.load("images/enemy3_down3.png").convert_alpha(), \








                        pygame.image.load("images/enemy3_down4.png").convert_alpha(), \








                        pygame.image.load("images/enemy3_down5.png").convert_alpha(), \








                        pygame.image.load("images/enemy3_down6.png").convert_alpha() \








                        ])








                self.rect = self.image1.get_rect()








                self.width, self.height = bg_size[0], bg_size[1]








                self.speed = 1








                self.active = True








                self.rect.left, self.rect.top = \








                                randint(0, self.width - self.rect.width), \








                                randint(-15 * self.height, -5 * self.height) #在页面外部上方5-15个屏幕高度范围内随机生成一个敌机








                self.mask = pygame.mask.from_surface(self.image1) #将非透明部分标记为mask








                self.energy = BigEnemy.energy








                self.hit = False  #检测是否被击中的属性








 








        def move(self):








                if self.rect.top < self.height:








                        self.rect.top += self.speed








                else:








                        self.reset()








 








        def reset(self):








                self.active = True








                self.enery = BigEnemy.energy








                self.rect.left, self.rect.top = \








                                randint(0, self.width - self.rect.width), \








                                randint(-15 * self.height, -5 * self.height)

#bullet.py








import pygame








 








class Bullet1(pygame.sprite.Sprite):#普通子弹，一次一发








    def __init__(self, position):








        pygame.sprite.Sprite.__init__(self)








 








        self.image = pygame.image.load("images/bullet1.png").convert_alpha()








        self.rect = self.image.get_rect()








        self.rect.left, self.rect.top = position #把飞机机头位置给子弹位置








        self.speed = 12








        self.active = True








        self.mask = pygame.mask.from_surface(self.image) #非透明部分








 








    def move(self):








        self.rect.top -= self.speed








 








        if self.rect.top < 0:  #射出屏幕外








            self.active = False








 








    def reset(self, position):








        self.rect.left, self.rect.top = position








        self.active = True

（未完待續）