Liste von Objekten nebeneinander?

Question

Ich mache Space Invaders auf Pygame, aber ich bin derzeit daran fest, die Aliens in einer Linie nebeneinander zu arrangieren. Die Aliens sind in einer Liste (60 von ihnen) Ich brauche Hilfe, um sie in einer Linie zu bekommen. Hier ist, was ich bisher:

import pygame, random, sys 
from time import sleep 
from pygame.locals import * 

BLACK = (0, 0, 0) 
WHITE = (255, 255, 255) 
RED = (255, 0, 0) 
BLUE = (0, 0, 255) 
NAVYBLUE = (0,0,45) 
GREY = (128,128,128) 

pygame.init() 
screen_width = 700 
screen_height = 400 
screen = pygame.display.set_mode([screen_width, screen_height]) 

class Block(pygame.sprite.Sprite): 
    def __init__(self, image): 
     aliens = pygame.image.load('aliens.png') 
     aliens = pygame.transform.scale(aliens, (20,20)) 
     super(Block, self).__init__() 

     self.image = aliens 

     self.rect = self.image.get_rect() 

class Player(pygame.sprite.Sprite): 
    def __init__(self): 
     pygame.mouse.set_visible(0) 
     ship = pygame.image.load('spaceship.png') 
     ship = pygame.transform.scale(ship, (20,30)) 
     super(Player, self).__init__() 

     self.image = ship 
     self.rect = self.image.get_rect() 
    def update(self): 
     pos = pygame.mouse.get_pos() 
     self.rect.x = pos[0] 

class Bullet(pygame.sprite.Sprite): 
    def __init__(self): 
     super(Bullet, self).__init__() 
     self.image = pygame.Surface([4, 10]) 
     self.image.fill(WHITE) 
     self.rect = self.image.get_rect() 

    def update(self): 
     self.rect.y -= 3 

all_sprites_list = pygame.sprite.Group() 
block_list = pygame.sprite.Group() 
bullet_list = pygame.sprite.Group() 

for i in range(60): 
    block = Block(BLUE) 
    block.rect.x = random.randrange(screen_width) 
    block.rect.y = random.randrange(350) 
    block_list.add(block) 
    all_sprites_list.add(block) 

player = Player() 
all_sprites_list.add(player) 
done = False 
clock = pygame.time.Clock() 
score = 0 
time = 1500 
player.rect.y = 370 
font = pygame.font.SysFont(None, 30) 

while not done: 
    for event in pygame.event.get(): 
     if event.type == pygame.QUIT: 
      done = True 

     elif event.type == pygame.MOUSEBUTTONDOWN: 
      bullet = Bullet() 
      bullet.rect.x = player.rect.x + 9.5 
      bullet.rect.y = player.rect.y 
      all_sprites_list.add(bullet) 
      bullet_list.add(bullet) 

    all_sprites_list.update() 



    for bullet in bullet_list: 


     block_hit_list = pygame.sprite.spritecollide(bullet, block_list, True) 


     for block in block_hit_list: 
      bullet_list.remove(bullet) 
      all_sprites_list.remove(bullet) 
      score += 1 


     if bullet.rect.y < -10: 
      bullet_list.remove(bullet) 
      all_sprites_list.remove(bullet) 

    screen.fill(NAVYBLUE) 
    scoredisplay = font.render("Score {0}".format(score), 1, (WHITE)) 
    screen.blit(scoredisplay, (5, 10)) 
    all_sprites_list.draw(screen) 
    timedisplay = font.render("Time {0}".format(time), 1, (WHITE)) 
    screen.blit(timedisplay, (5, 30)) 

    pygame.display.flip() 


    clock.tick(60) 

    time -= 1 
    pygame.time.delay(10) 

    if time == 0: 
     done = True 
     screen.fill(WHITE) 
     display = font.render("YOU RAN OUT OF TIME!! :(Your final score was {}".format(score), 1, (BLACK)) 
     screen.blit(display, (35, screen_height/2)) 
     pygame.display.flip() 
     sleep(3) 


pygame.quit() 

Answer 1

Sie Ihre Aliens in zufälligen Positionen

for i in range(60): 
    block = Block(BLUE) 
    block.rect.x = random.randrange(screen_width) 
    block.rect.y = random.randrange(350) 
    block_list.add(block) 
    all_sprites_list.add(block) 

platzieren, um sie in einer Linie zu bekommen, versuchen Sie die folgenden

for i in range(60): 
    block = Block(BLUE) 
    block.rect.x = 30 * i 
    block.rect.y = 120 
    block_list.add(block) 
    all_sprites_list.add(block) 

Da jedoch Sie haben 60 von ihnen, einige werden aus dem Bildschirm sein.