问题描述
我正在创建一个简单的游戏,我扮演飞机并躲避火箭(火箭从右侧出现),我做了一些类似障碍物的事情来阻挡敌人并杀死他们,但这太OP了,所以我想要削弱它,所以我将从右侧和顶部产生敌人。
但我真的不知道如何从顶部生成它们。
我非常感谢您的帮助,谢谢。
附言名为 Enemy 的类应该从右侧产生敌人(这是正常工作的) 类 AnotherEnemy 应该从顶部产生敌人(这不能正常工作) 我的代码:
from pygame.locals import(
RLEACCEL,K_LEFT,K_DOWN,K_UP,K_RIGHT,K_ESCAPE,K_SPACE,K_w,K_a,K_s,K_d,KEYDOWN,QUIT,)
SCREEN_WIDTH = 700
SCREEN_HEIGHT = 700
class Player(pygame.sprite.Sprite):
def __init__(self):
super(Player,self).__init__()
self.surf = pygame.image.load('C:\Sprites\jet.png').convert()
self.surf.set_colorkey((255,255,255),RLEACCEL)
self.rect = self.surf.get_rect()
def update(self,pressed_keys):
if pressed_keys[K_w]:
self.rect.move_ip(0,-8)
if pressed_keys[K_s]:
self.rect.move_ip(0,8)
if pressed_keys[K_a]:
self.rect.move_ip(-8,0)
if pressed_keys[K_d]:
self.rect.move_ip(8,0)
if pressed_keys[K_UP]:
self.rect.move_ip(0,-8)
if pressed_keys[K_DOWN]:
self.rect.move_ip(0,8)
if pressed_keys[K_LEFT]:
self.rect.move_ip(-8,0)
if pressed_keys[K_RIGHT]:
self.rect.move_ip(8,0)
if self.rect.left < 0:
self.rect.left = 0
if self.rect.right > SCREEN_WIDTH:
self.rect.right = SCREEN_WIDTH
if self.rect.top <= 0:
self.rect.top = 0
if self.rect.bottom >= SCREEN_HEIGHT:
self.rect.bottom = SCREEN_HEIGHT
class Enemy(pygame.sprite.Sprite):
def __init__(self):
super(Enemy,self).__init__()
self.surf = pygame.image.load('C:\Sprites\missile.png').convert()
self.surf.set_colorkey((255,RLEACCEL)
self.rect = self.surf.get_rect(
center =(
random.randint(SCREEN_WIDTH + 20,SCREEN_WIDTH + 100),random.randint(0,SCREEN_HEIGHT),)
)
self.speed = random.randint(5,17)
def update(self):
self.rect.move_ip(-self.speed,0)
if self.rect.right < 0:
self.kill()
class AnotherEnemy(pygame.sprite.Sprite):
def __init__(self):
super(AnotherEnemy,self).__init__()
self.surf = pygame.image.load('C:\Sprites\missile2.png').convert()
self.surf.set_colorkey((255,255))
self.rect = self.surf.get_rect(
center =(
random.randint(SCREEN_WIDTH + 20,SCREEN_HEIGHT)
)
)
self.speed = random.randint(8,17)
def update(self):
self.rect.move_ip(0,self.speed)
if self.rect.bottom > SCREEN_HEIGHT:
self.kill()
class Cloud(pygame.sprite.Sprite):
def __init__(self):
super(Cloud,self).__init__()
self.surf = pygame.image.load('C:\Sprites\cloud.png').convert()
self.surf.set_colorkey((0,0),RLEACCEL)
self.rect = self.surf.get_rect(
center =(
random.randint(SCREEN_WIDTH + 20,)
)
def update(self):
self.rect.move_ip(-6,0)
if self.rect.right < 0:
self.kill()
class Sun(pygame.sprite.Sprite):
def __init__(self):
super(Sun,self).__init__()
self.surf = pygame.image.load('C:\Sprites\sunnn.png').convert()
self.surf.set_colorkey((0,RLEACCEL)
self.rect = self.surf.get_rect()
class Ballon(pygame.sprite.Sprite):
def __init__(self):
super(Ballon,self).__init__()
self.surf = pygame.image.load('C:\Sprites\gula.png').convert()
self.surf.set_colorkey((0,RLEACCEL)
self.rect = self.surf.get_rect(
center =(
random.randint(SCREEN_WIDTH + 20,)
)
def update(self):
self.rect.move_ip(-6,0)
if self.rect.right < 0:
self.kill()
class Barrier(pygame.sprite.Sprite):
def __init__(self):
super(Barrier,self).__init__()
self.surf = pygame.image.load('C:\Sprites\shield.png').convert()
self.surf.set_colorkey((0,RLEACCEL)
self.rect = self.surf.get_rect()
def update(self):
if pressed_keys[K_w]:
self.rect.move_ip(0,0)
pygame.init()
pygame.display.set_caption('Simple game')
screen = pygame.display.set_mode((SCREEN_WIDTH,SCREEN_HEIGHT))
ADDENEMY = pygame.USEREVENT + 1
pygame.time.set_timer(ADDENEMY,250)
ADDANOTHERENEMY = pygame.USEREVENT + 4
pygame.time.set_timer(ADDANOTHERENEMY,250)
ADDCLOUD = pygame.USEREVENT + 2
pygame.time.set_timer(ADDCLOUD,3100)
ADDBALLON = pygame.USEREVENT + 3
pygame.time.set_timer(ADDBALLON,4500)
enemy = Enemy()
anotherenemy = AnotherEnemy()
player = Player()
barrier = Barrier()
sun = Sun()
ballon = Ballon()
enemies = pygame.sprite.Group()
anotherenemies = pygame.sprite.Group()
clouds = pygame.sprite.Group()
ballons = pygame.sprite.Group()
all_sprites = pygame.sprite.Group()
all_sprites.add(player)
all_sprites.add(sun)
all_sprites.add(enemy)
all_sprites.add(anotherenemy)
Time = 0
clock = pygame.time.Clock()
running = True
while running:
for event in pygame.event.get():
if event.type == pygame.USEREVENT:
Time += 0.25
if event.type == KEYDOWN:
if event.key == K_ESCAPE:
running = False
elif event.key == K_SPACE:
all_sprites.add(barrier)
elif event.type == QUIT:
running = False
elif event.type == ADDENEMY:
new_enemy = Enemy()
enemies.add(new_enemy)
all_sprites.add(new_enemy)
elif event.type == ADDANOTHERENEMY:
new_anotherenemy = AnotherEnemy()
anotherenemies.add(new_anotherenemy)
all_sprites.add(new_anotherenemy)
elif event.type == ADDCLOUD:
new_cloud = Cloud()
clouds.add(new_cloud)
all_sprites.add(new_cloud)
elif event.type == ADDBALLON:
new_ballon = Ballon()
ballons.add(new_ballon)
all_sprites.add(new_ballon)
elif Time < -10000000:
running = False
clock.tick(30)
screen.blit(player.surf,player.rect)
pressed_keys = pygame.key.get_pressed()
player.update(pressed_keys)
anotherenemies.update()
enemies.update()
clouds.update()
ballons.update()
barrier.update()
screen.fill((135,206,250))
for entity in all_sprites:
screen.blit(entity.surf,entity.rect)
pygame.display.flip()
if pygame.sprite.spritecollideany(player,enemies):
player.kill()
running = False
collided_enemy = pygame.sprite.spritecollideany(barrier,enemies)
if collided_enemy != None:
collided_enemy.kill()
Time -= 25
collided_anotherenemy = pygame.sprite.spritecollideany(barrier,anotherenemies)
if collided_anotherenemy != None:
collided_anotherenemy.kill()
counter,text = str(Time),' score: ' + str(Time)
pygame.time.set_timer(pygame.USEREVENT,1000)
font = pygame.font.SysFont('Consolas',30)
screen.blit(font.render(text,True,(0,0)),(32,48))
pygame.display.flip()
pygame.quit()
解决方法
您只需调整您的位置和速度逻辑,让位置的移动和可变部分位于 y
组件中。因为屏幕顶部是 0
,所以您必须从负 y
值开始,并以正步长移动而不是负值。当敌人离开屏幕底部(> 屏幕高度)时,您可以更改杀死检查以杀死敌人。这是来自屏幕顶部并向下移动的敌人定义:
class AnotherEnemy(pygame.sprite.Sprite):
def __init__(self):
super(AnotherEnemy,self).__init__()
self.surf = pygame.image.load(image3).convert()
self.surf.set_colorkey((255,255,255))
self.rect = self.surf.get_rect(
center=(
random.randint(0,SCREEN_WIDTH),-100
)
)
self.speed = random.randint(8,17)
def update(self):
self.rect.move_ip(0,self.speed)
if self.rect.top > SCREEN_HEIGHT:
self.kill()