python飛機(jī)大戰(zhàn)14-游戲結(jié)束

1 游戲結(jié)束

?? 現(xiàn)在琉挖，當(dāng)玩家用完生命時荷逞，程序就會突然結(jié)束。這不是很友好粹排。 所以將制作一個“Game Over”屏幕种远，并允許玩家再次玩。
?? “Game Over”屏幕在2種情況下顯示：

• 游戲程序剛剛啟動后
• 玩家3條命都用完

游戲結(jié)束的原因是游戲循環(huán)由running變量控制顽耳，設(shè)置running為False玩家死亡時∽狗螅現(xiàn)在想要跟蹤游戲狀態(tài)（顯示游戲結(jié)束或玩游戲）妙同，將創(chuàng)建一個名為game_over的標(biāo)志，并將其添加到游戲循環(huán)的頂部：

# Game Loop
game_over = True
running = True


while running:
    if game_over:
        show_go_screen()

稍后會定義show_go_screen()膝迎。 目前還需要考慮別的事情粥帚。 當(dāng)游戲結(jié)束，通過屏幕進(jìn)入游戲時限次，如果玩家再次選擇游戲芒涡，需要重置所有內(nèi)容 - 得分，流星卖漫，玩家的生命等等》丫。現(xiàn)在在游戲開始前設(shè)置這些東西，但現(xiàn)在要將它們移動到show_go_screen()之后羊始，show_go_screen()函數(shù)運行結(jié)束后旱幼，它們會發(fā)生：

while running:
    if game_over:
        show_go_screen()
        game_over = False
        all_sprites = pygame.sprite.Group()
        mobs = pygame.sprite.Group()
        bullets = pygame.sprite.Group()
        powerups = pygame.sprite.Group()
        player = Player()
        all_sprites.add(player)
        for i in range(8):
            newmob()
        score = 0

還設(shè)置game_over為False，因為正在開始一個新的游戲突委。然后柏卤，可以改變玩家用完生命時發(fā)生的事情--- game_over = True ：

# if the player died and the explosion has finished playing
if player.lives == 0 and not death_explosion.alive():
    game_over = True

游戲結(jié)束屏幕 現(xiàn)在只需要定義什么show_go_screen()。因為在這個例子中匀油，只做一個“屏幕”缘缚，只是要使用游戲的標(biāo)題，并提供一些很好的說明如何玩：

def show_go_screen():
    screen.blit(background,background_rect)
    draw_text(screen, 'SHMUP!', 64, WIDTH/2, HEIGHT/4)
    draw_text(screen, 'Arrow keys move, Space to fire', 22, WIDTH/2,HEIGHT/2)
    draw_text(screen, 'Press a key to begin', 18, WIDTH/2, HEIGHT*3/4)
    pygame.display.filp()
    waiting = True
    while waiting:
        clock.tick(FPS)
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
            if event.type == pygame.KEYUP:
                waiting = False

整合到一起

# Shmup game - part 13
# shmup.py
# 增強(qiáng)火力
import pygame
import random
from os import path


img_dir = path.join(path.dirname(__file__), 'img')
mp3_dir = path.join(path.dirname(__file__), 'mp3')


WIDTH = 512  # width of our game window
HEIGHT = 768  # height of our game window
FPS = 60  # 60 frames per second
POWERUP_TIME = 5000


# Colors(R,G,B),define color
BLACK = (0, 0, 0)
WHITE = (255, 255, 255)
RED = (255, 0, 0)
GREEN = (0, 255, 0)
BLUE = (0, 0, 255)
YELLOW = (255, 255, 0)


# initialize pygame and create windw
pygame.init()  # 啟動pygame并初始化
pygame.mixer.init()  # 聲音初始化
screen = pygame.display.set_mode((WIDTH, HEIGHT))  # 游戲屏幕敌蚜，按照在配置常量中設(shè)置的大小創(chuàng)建
pygame.display.set_caption("Shmup!")
icon = pygame.image.load("img/alien.ico")
pygame.display.set_icon(icon)
clock = pygame.time.Clock()  # 創(chuàng)建一個時鐘以便于確保游戲能以指定的FPS運行


font_name = pygame.font.match_font('arial')
def draw_text(surf,text,size,x,y):
    font = pygame.font.Font(font_name,size)
    text_surface = font.render(text,True,WHITE)
    text_rect = text_surface.get_rect()
    text_rect.midtop = (x,y)
    surf.blit(text_surface,text_rect)

def newmob():
    m = Mob()
    all_sprites.add(m)
    mobs.add(m)

def draw_shield_bar(surf,x,y,pct):
    if pct < 0:
        pct = 0
    BAR_LENGTH = 100
    BAR_HEIGHT = 10
    fill = (pct / 100) * BAR_LENGTH
    outline_rect = pygame.Rect(x, y, BAR_LENGTH, BAR_HEIGHT)
    fill_rect = pygame.Rect(x, y, fill, BAR_HEIGHT)
    pygame.draw.rect(surf, GREEN, fill_rect)
    pygame.draw.rect(surf, WHITE, outline_rect, 2)  # 第4個參數(shù)默認(rèn)值為0忙灼，表示填充矩形內(nèi)部

def draw_lives(surf, x, y, lives, img):
    for i in range(lives):
        img_rect = img.get_rect()
        img_rect.x = x + 30 * i
        img_rect.y = y
        surf.blit(img, img_rect)

def show_go_screen():
    screen.blit(background,background_rect)
    draw_text(screen, 'SHMUP!', 64, WIDTH/2, HEIGHT/4)
    draw_text(screen, 'Arrow keys move, Space to fire', 22, WIDTH/2,HEIGHT/2)
    draw_text(screen, 'Press a key to begin', 18, WIDTH/2, HEIGHT*3/4)
    pygame.display.flip()
    waiting = True
    while waiting:
        clock.tick(FPS)
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
            if event.type == pygame.KEYUP:
                waiting = False


class Player(pygame.sprite.Sprite):
    def __init__(self):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.transform.scale(player_img, (60, 40))
        self.image.set_colorkey(BLACK)
        self.rect = self.image.get_rect()
        self.radius = 20
        # pygame.draw.circle(self.image, RED, self.rect.center, self.radius)
        self.rect.centerx = WIDTH/2
        self.rect.bottom = HEIGHT - 10
        self.speedx = 0
        self.speedy = 0
        self.shield = 100
        self.shoot_delay = 250
        self.last_shot = pygame.time.get_ticks()
        self.lives = 3
        self.hidden = False
        self.hide_timer = pygame.time.get_ticks()
        self.power = 1
        self.power_time = pygame.time.get_ticks()

    def update(self):
        # timeout for powerups
        if self.power >= 2 and pygame.time.get_ticks() - self.power_time > POWERUP_TIME:
            self.power -= 1
            self.power_time = pygame.time.get_ticks()
        # unhide if hidden
        if self.hidden and pygame.time.get_ticks() - self.hide_timer > 1000:
            self.hidden = False
            self.rect.centerx = WIDTH/2
            self.rect.bottom = HEIGHT - 10

        # any code here will happen every time the game loop updates
        self.speedx = 0
        self.speedy = 0
        keystate = pygame.key.get_pressed()
        if keystate[pygame.K_LEFT]:
            self.speedx = -5
        if keystate[pygame.K_RIGHT]:
            self.speedx = 5
        self.rect.x += self.speedx

        if keystate[pygame.K_UP]:
            self.speedy = -5
        if keystate[pygame.K_DOWN]:
            self.speedy = 5
        self.rect.y += self.speedy

        if keystate[pygame.K_SPACE]:
            self.shoot()

        if self.rect.right > WIDTH:
            self.rect.right = WIDTH
        if self.rect.left < 0:
            self.rect.left = 0

        if self.rect.bottom > HEIGHT:
            self.rect.bottom = HEIGHT
        if self.rect.top < 0:
            self.rect.top = 0

    def shoot(self):
        now = pygame.time.get_ticks()
        if now - self.last_shot > self.shoot_delay:
            self.last_shot = now
            if self.power == 1:
                bullet = Bullet(self.rect.centerx, self.rect.top)
                all_sprites.add(bullet)
                bullets.add(bullet)
                shoot_sound.play()
            if self.power >= 2:
                bullet1 = Bullet(self.rect.left, self.rect.centery)
                bullet2 = Bullet(self.rect.right, self.rect.centery)
                all_sprites.add(bullet1)
                all_sprites.add(bullet2)
                bullets.add(bullet1)
                bullets.add(bullet2)
                shoot_sound.play()

    def hide(self):
        # hide the player temporarily
        self.hidden = True
        self.hide_timer = pygame.time.get_ticks()
        self.rect.center = (WIDTH/2, HEIGHT-30)

    def powerup(self):
        self.power += 1
        self.power_time = pygame.time.get_ticks()


class Mob(pygame.sprite.Sprite):
    def __init__(self):
        pygame.sprite.Sprite.__init__(self)
        self.leng = random.randrange(30, 70, 10)
        self.image_orig = pygame.transform.scale(random.choice(meteor_img), (self.leng, self.leng))
        self.image_orig.set_colorkey(BLACK)
        self.image = self.image_orig.copy()
        self.rect = self.image.get_rect()
        self.radius = int(self.rect.width / 2)
        # pygame.draw.circle(self.image, RED, self.rect.center, self.radius)
        self.rect.x = random.randrange(WIDTH - self.rect.width)
        self.rect.y = random.randrange(-150, -100)
        self.speedx = random.randrange(-3, 3)
        self.speedy = random.randrange(1, 5)
        self.rot = 0
        self.rot_speed = random.randrange(-8, 8)
        self.last_update = pygame.time.get_ticks()

    def update(self):
        self.rotate()
        self.rect.x += self.speedx
        self.rect.y += self.speedy
        if self.rect.top > HEIGHT + 10 or self.rect.left < -50 or self.rect.right > WIDTH + 50:
            self.rect.x = random.randrange(WIDTH - self.rect.width)
            self.rect.y = random.randrange(-100, -40)
            self.speedy = random.randrange(1, 5)

    def rotate(self):
        now = pygame.time.get_ticks()
        if now - self.last_update > 50:
            self.last_update = now
            # do rotate here
            self.rot = (self.rot + self.rot_speed) % 360
            new_image = pygame.transform.rotate(self.image_orig, self.rot)
            old_center = self.rect.center
            self.image = new_image
            self.rect = self.image.get_rect()
            self.rect.center = old_center


class Bullet(pygame.sprite.Sprite):
    def __init__(self, x, y):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.transform.scale(bullet_img, (48, 48))
        self.image.set_colorkey(BLACK)
        self.rect = self.image.get_rect()
        self.rect.bottom = y
        self.rect.centerx = x
        self.speedy = -8

    def update(self):
        self.rect.y += self.speedy
        # kill if it moves off the top of the screen
        if self.rect.bottom < 0:
            self.kill()


class Pow(pygame.sprite.Sprite):
    def __init__(self, center):
        pygame.sprite.Sprite.__init__(self)
        self.type = random.choice(['shield', 'gun'])
        self.image = pygame.transform.scale(powerup_images[self.type], (30, 30))
        self.image.set_colorkey(BLACK)
        self.rect = self.image.get_rect()
        self.rect.center = center
        self.speedy = 3

    def update(self):
        self.rect.y += self.speedy
        # kill if it moves off the bottom of the screen
        if self.rect.top > HEIGHT:
            self.kill()


class Explosion(pygame.sprite.Sprite):
    def __init__(self,center,size):
        pygame.sprite.Sprite.__init__(self)
        self.size = size
        self.image = explosion_anim[self.size][0]
        self.rect = self.image.get_rect()
        self.rect.center = center
        self.frame = 0
        self.last_update = pygame.time.get_ticks()
        self.frame_rate = 50

    def update(self):
        now = pygame.time.get_ticks()
        if now - self.last_update > self.frame_rate:
            self.last_update = now
            self.frame += 1
            if self.frame == len(explosion_anim[self.size]):
                self.kill()
            else:
                center = self.rect.center
                self.image = explosion_anim[self.size][self.frame]
                self.rect = self.image.get_rect()
                self.rect.center = center

# load all game graphics
background = pygame.image.load(path.join(img_dir, 'background2.jpg')).convert()
background_rect = background.get_rect()
player_img = pygame.image.load(path.join(img_dir, 'my_plane.png')).convert()
player_mini_img = pygame.transform.scale(player_img,(24,16))
player_mini_img.set_colorkey(BLACK)
bullet_img = pygame.image.load(path.join(img_dir, 'bullet.png')).convert()
meteor_img = []
meteor_list = ['enemy1.png']
for img in meteor_list:
    meteor_img.append(pygame.image.load(path.join(img_dir, img)).convert())
explosion_anim = {}
explosion_anim['lg'] = []
explosion_anim['sm'] = []
explosion_anim['player'] = []
for i in range(1,6):
    filename = 'e{}.png'.format(i)
    img = pygame.image.load(path.join(img_dir, filename)).convert()
    img.set_colorkey(BLACK)
    img_lg = pygame.transform.scale(img, (Mob().leng + 5, Mob().leng + 5))
    explosion_anim['lg'].append(img_lg)
    img_sm = pygame.transform.scale(img, (16, 16))
    explosion_anim['sm'].append(img_sm)

    filename = 'e{}.png'.format(i)
    img = pygame.image.load(path.join(img_dir, filename)).convert()
    img.set_colorkey(BLACK)
    img_player = pygame.transform.scale(img, (50, 50))
    explosion_anim['player'].append(img_player)
powerup_images = {}
powerup_images['shield'] = pygame.image.load(path.join(img_dir,'shield.PNG')).convert()
powerup_images['gun'] = pygame.image.load(path.join(img_dir,'gun.PNG')).convert()


# load all game sound
shoot_sound = pygame.mixer.Sound(path.join(mp3_dir, 'hero_fire.wav'))
expl_sounds = []
for expl in ['explosion2.wav','explosion3.wav']:
    expl_sounds.append(pygame.mixer.Sound(path.join(mp3_dir, expl)))
pygame.mixer.music.load(path.join(mp3_dir, 'bgm.mp3'))
pygame.mixer.music.set_volume(0.2)


pygame.mixer.music.play(loops=-1)
# Game Loop
game_over = True
running = True


while running:
    if game_over:
        show_go_screen()
        game_over = False
        all_sprites = pygame.sprite.Group()
        mobs = pygame.sprite.Group()
        bullets = pygame.sprite.Group()
        powerups = pygame.sprite.Group()
        player = Player()
        all_sprites.add(player)
        for i in range(8):
            newmob()
        score = 0
    # keep loop running at the right speed
    clock.tick(FPS)


    # Process input(events)    # 這是游戲主循環(huán)，通過變量running控制钝侠，如果需要
    for event in pygame.event.get():
        # check for closing window
        if event.type == pygame.QUIT:
            running = False


    # Update                   # 游戲結(jié)束的話直接將running設(shè)為False即可
    all_sprites.update()

    # check to see if a bullet hit a mob
    hits = pygame.sprite.groupcollide(mobs, bullets, True, True, pygame.sprite.collide_rect_ratio(0.6))
    for hit in hits:
        score += 100 - hit.leng
        random.choice(expl_sounds).play()
        expl = Explosion(hit.rect.center, 'lg')
        all_sprites.add(expl)
        if random.random() > 0.9:
            pow = Pow(hit.rect.center)
            all_sprites.add(pow)
            powerups.add(pow)
        newmob()

    # check to see if a mob hit the player
    hits = pygame.sprite.spritecollide(player, mobs, True,pygame.sprite.collide_circle)
    for hit in hits:
        player.shield -= hit.leng/5
        expl = Explosion(hit.rect.center, 'sm')
        all_sprites.add(expl)
        newmob()
        if player.shield <= 0:
            death_explosion = Explosion(player.rect.center, 'player')
            all_sprites.add(death_explosion)
            player.hide()  # 效果不明顯，因為之前已經(jīng)定義了飛機(jī)不能超出屏幕
            player.lives -= 1
            player.shield = 100

    # check to see if player hit a powerup
    hits = pygame.sprite.spritecollide(player,powerups,True,pygame.sprite.collide_rect_ratio(0.6))
    for hit in hits:
        if hit.type == 'shield':
            player.shield += random.randrange(10, 20)
            if player.shield >= 100:
                player.shield = 100
        if hit.type == 'gun':
           player.powerup()

    # if the player died and the explosion has finished playing
    if player.lives == 0 and not death_explosion.alive():
        game_over = True

    # Render(draw)             # 現(xiàn)在還沒有確定具體的代碼酸舍，先用一些基本代碼填充帅韧，后續(xù)再補(bǔ)充
    screen.fill(BLACK)
    screen.blit(background, background_rect)
    all_sprites.draw(screen)
    draw_text(screen, str(score), 18, WIDTH/2, 10)
    draw_text(screen, str(player.shield), 15, 20, 20)
    draw_shield_bar(screen, 5, 5, player.shield)
    draw_lives(screen,WIDTH - 100, 5, player.lives, player_mini_img)
    # *after* drawing everything,flip the display
    pygame.display.flip()



pygame.quit()

項目代碼可以查看我的github，網(wǎng)址為
alien-invasion