从玩家那里射出子弹

Question

所以我想在我的游戏中添加一个射击选项，但在我按下空格键的那一刻，子弹在玩家所在的地方生成，仅此而已，它不移动，它只是坐在那里，我特别不熟悉pygame，所以我不太确定。

请说出您是否需要比这更多的上下文

这是代码：

import pygame
import random
from pygame.locals import(
RLEACCEL,
K_UP,
K_DOWN,
K_LEFT,
K_RIGHT,
K_ESCAPE,
K_w,
K_a,
K_s,
K_d,
K_0,
K_9,
K_SPACE,
KEYDOWN,
QUIT
)
pygame.init()
pygame.joystick.init()
pygame.mixer.init()
pygame.display.set_caption("Dodge The Missile (ALPHA 0.11)")
SCREEN_WIDTH = 1600
SCREEN_HEIGHT = 1000
class Enemy(pygame.sprite.Sprite):
def __init__(self):
super(Enemy, self).__init__()
self.surf = pygame.image.load("Missiles.png").convert()
self.surf.set_colorkey((255,255,255), 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(Enemy_SPEED_Min, Enemy_SPEED_Max)

def update(self):
self.rect.move_ip(-self.speed, 0)
if self.rect.right < 0:
self.kill()

class Player(pygame.sprite.Sprite):
def __init__(self):
super(Player, self).__init__()
self.surf = pygame.image.load("Spaceship.png").convert()
self.surf.set_colorkey((255,255,255), RLEACCEL)
self.rect = self.surf.get_rect()
self.layers = 1
def update(self, pressed_keys):
if pressed_keys[K_UP] or pressed_keys[K_w]:
self.rect.move_ip(0, -5)
if pressed_keys[K_DOWN] or pressed_keys[K_s]:
self.rect.move_ip(0, 5)
if pressed_keys[K_LEFT] or pressed_keys[K_a]:
self.rect.move_ip(-5, 0)
if pressed_keys[K_RIGHT] or pressed_keys[K_d]:
self.rect.move_ip(5, 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
def shoot(self):
bullet = Bullet(self.rect.centerx, self.rect.top)
all_sprites.add(bullet)

class Cloud(pygame.sprite.Sprite):
def __init__(self):
super(Cloud, self).__init__()
self.surf = pygame.image.load("Cloud.png").convert()
self.surf.set_colorkey((255,255,255), RLEACCEL)
self.layers = 3
self.rect = self.surf.get_rect(
center=(
random.randint(SCREEN_WIDTH + 20, SCREEN_WIDTH + 100),
random.randint(0, SCREEN_HEIGHT)
)
)
def update(self):
self.rect.move_ip(-5, 0)
if self.rect.right < 0:
self.kill()
class Bullet (pygame.sprite.Sprite):
def __init__ (self, x, y):
super (Bullet, self).__init__()
self.surf = pygame.image.load("Bullet.png").convert()
self.surf.set_colorkey((255,255,255), RLEACCEL)
self.rect = self.surf.get_rect()
self.rect.bottom = y
self.rect.centerx = x
self.speedx = 5
def update(self):
self.rect.x += self.speedx
if self.rect.left > SCREEN_WIDTH:
self.kill()

class AddEnemyTimer():
def __init__(self, Generate_Enemy_Timer, Generate_Cloud_Timer):
self.Generate_Enemy_Timer = Generate_Enemy_Timer
self.Generate_Cloud_Timer = Generate_Cloud_Timer
class Game_Speed_Class():
def __init__(self, Game_Speed):
self.Game_Speed = Game_Speed
class Enemy_Speed_Class():
def __init__(self, First_NEW_ENEMY_SPEED, Second_NEW_ENEMY_SPEED):
self.First_NEW_ENEMY_SPEED = First_NEW_ENEMY_SPEED
self.Second_NEW_ENEMY_SPEED = Second_NEW_ENEMY_SPEED
Enemy_SPEED = Enemy_Speed_Class(20, 50)
Enemy_SPEED_Min = Enemy_SPEED.First_NEW_ENEMY_SPEED
Enemy_SPEED_Max = Enemy_SPEED.Second_NEW_ENEMY_SPEED
count = 0
green = (0, 255, 0)
Lives = 99999999999999

Primary_Music = pygame.mixer.music.load("Game.ogg")
pygame.mixer.music.play(loops=-1)

Milestone_Delay = 50
screen = pygame.display.set_mode((SCREEN_WIDTH,SCREEN_HEIGHT)) 
First_NEW_ENEMY_Timer = 175
Second_NEW_ENEMY_Timer = 250
First_NEW_CLOUD_Timer = 300
Second_NEW_CLOUD_Timer = 600
Generate_Timer= AddEnemyTimer(random.randint(First_NEW_ENEMY_Timer, Second_NEW_ENEMY_Timer), random.randint(First_NEW_CLOUD_Timer, Second_NEW_CLOUD_Timer))
ADDENEMY = pygame.USEREVENT + 1
pygame.time.set_timer(ADDENEMY, Generate_Timer.Generate_Enemy_Timer)
More_Enemies = pygame.USEREVENT +2
pygame.time.set_timer(More_Enemies, 3000)
ADDCLOUD = pygame.USEREVENT + 3
pygame.time.set_timer(ADDCLOUD, Generate_Timer.Generate_Cloud_Timer)
New_Progress = pygame.USEREVENT + 4
pygame.time.set_timer(New_Progress, Milestone_Delay)
Game_Framerate = Game_Speed_Class(59.94)
Set_Game_Speed = pygame.USEREVENT + 5
pygame.time.set_timer(Set_Game_Speed, 10000)
player = Player()
health = 0
green = (0, 255, 0)
enemies = pygame.sprite.Group()
all_sprites = pygame.sprite.Group()
all_sprites.add(player)
clouds = pygame.sprite.Group()
clock = pygame.time.Clock()
running = True
Large_Font = 60
Medium_Font = 40
Small_Font = 20
Small_Size = pygame.font.Font("Airstrip Four.ttf", Small_Font)
Medium_Size = pygame.font.Font("Airstrip Four.ttf", Medium_Font)
Large_Size = pygame.font.Font("Airstrip Four.ttf", Large_Font)


while running:
for event in pygame.event.get():
if event.type == KEYDOWN:
if event.key == K_ESCAPE:
running = False
if event.key == K_SPACE:
player.shoot()
if event.key == K_0:
pygame.mixer.music.set_volume(0)
if event.key == K_9:
pygame.mixer.music.set_volume(1)
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 == ADDCLOUD:
new_cloud = Cloud()
clouds.add(new_cloud)
all_sprites.add(new_cloud)
elif event.type == New_Progress:
count+= 1
elif event.type == Set_Game_Speed:
Enemy_SPEED_Min += 10
Enemy_SPEED_Max += 10

elif event.type == More_Enemies:
First_NEW_ENEMY_Timer += 50
Second_NEW_ENEMY_Timer += 50
First_NEW_CLOUD_Timer += 50
Second_NEW_CLOUD_Timer += 50

if Lives == 0:
running = False

screen.fill((135,206,250))
for entity in all_sprites:
screen.blit(entity.surf, entity.rect)
if pygame.sprite.spritecollide(player, enemies, True):
print("Hit!")
Lives -= 1

screen.blit(Medium_Size.render(str(count), True, (0, 0, 0)), (SCREEN_WIDTH // 2, 48))
screen.blit(Medium_Size.render(("Lives: ") + str(Lives), True, (0,0,0)), (20, 40))
fps = str(int(clock.get_fps()))
screen.blit(Small_Size.render(("FPS: ") + str(fps), True, (0,0,0)), (10, 0))

pressed_keys = pygame.key.get_pressed()
player.update(pressed_keys)
enemies.update()
clouds.update()
pygame.display.flip()
clock.tick(62)

Answer 1

这里有太多的代码无法真正挖掘，但我可以看到你不会在 while 循环中调用Bullet.update()。

Answer 2

为项目符号创建一个pygame.sprite.Group：

bullets = pygame.sprite.Group()

将项目符号添加到组中：

class Player(pygame.sprite.Sprite):
# [...]
def shoot(self):
bullet = Bullet(self.rect.centerx, self.rect.top)
all_sprites.add(bullet)
bullets.add(bullet)

更新主应用程序循环中的bullets组：

while running:
# [...]
player.update(pressed_keys)
enemies.update()
clouds.update()
bullets.update() # <-----
pygame.display.flip()