Pygame随机显示多个图像

Question

我和pygame一起工作，我能够在一个屏幕上画出多条线。我用这个命令：

for x in range(60,940,20):
        pygame.draw.line(screen, white, [x, 0], [x, 500], 1)

我现在需要在屏幕上绘制多个图像。我可以通过以下操作画出一幅图像：

^{pr2}$

我需要在[60，0]，[220，475]范围内随机画出这个物体的多个，或者在同一个范围内，但是有设定的坐标。在这两个例子中，我需要这些图像在x和/或y方向随机移动一段距离（跳跃）。在

Answer 1

创建多玩家

import random

multi_players = []
multi_players_pos = []

player = pygame.image.load("player_two.png").convert()
player.set_colorkey(white)

#create 10 players 0...9
for i in range(10):
    multi_players.append(player)
    pos = [random.randint(60,220+1), random.randint( 0, 475+1)]
    multi_players_pos.append(pos)

或加载player_0.png。。。player_9.png：

^{pr2}$

绘制：

while done == False:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            done = True

        for i in range(len(multi_players)):
            screen.blit(multi_players[i], multi_players_pos)

        pygame.display.flip()

    clock.tick(20)

pygame.quit()

同样的方法你可以改变球员的位置。在

但更好的方法是使Player类具有所有需要的函数。在

（它不是完整的代码-因此未经测试）

import random

class Player():

    def __init__(self, image, x, y):
        self.image = pygame.image.load(image).convert()
        self.image.set_colorkey(white)
        image_rect = image.get_rect()

        self.rect = Rect(x, y, image_rect.width, image_rect.height)

    def draw(self, screen):
        screen.blit(self.image, self.rect.topleft)

    def update(self):
        # here change randomly positon

#                      

multi_players = []

#create 10 players 0...9
for i in range(10):
    x, y = random.randint(60,220+1), random.randint( 0, 475+1)
    multi_players.append(Player("player_"+str(i)+".png", x, y))

while done == False:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            done = True

    # changes position

    for player in multi_players:
        player.update()

    # draws

    for player in multi_players:
        player.draw(screen)

    pygame.display.flip()

    clock.tick(20)

pygame.quit()

---

编辑：

完整的工作例子-如果你按下任何键（除了ESC）图像改变位置。在

我使用透明的PNG ball1.png，ball2.png，ball3.png，所以我不使用.convert()和{}。在

您可以在回答问题时找到（并下载）图像：

• Space invaders project
• Pygame- window and sprite class - python

一。在

import random
import pygame

WHITE = (255,255,255)
BLACK = (0  ,0  ,0  )

#                                   

class Player():

    def __init__(self, image, x=0, y=0):

        self.image = pygame.image.load(image)#.convert()
        #self.image.set_colorkey(WHITE)
        self.rect = self.image.get_rect()

        self.rect.centerx = x
        self.rect.centery = y

    #      

    def draw(self, screen):
        screen.blit(self.image, self.rect)

    #      

    def update(self):
        # here change randomly positon
        self.rect.topleft = random.randint(60,220+1), random.randint( 0, 475+1)

#                                   

class Game():

    def __init__(self):

        pygame.init()

        self.screen = pygame.display.set_mode((800,600))

        self.background = pygame.image.load("background.jpg").convert()
        self.multi_players = []

        # create 3 balls 1...3

        for i in range(1,4):
            player = Player("ball"+str(i)+".png")
            player.update() # set random position on start
            self.multi_players.append(player)

    #      

    def run(self):

        clock = pygame.time.Clock()
        RUNNING = True

        while RUNNING:

            #  - events  -

            for event in pygame.event.get():

                if event.type == pygame.QUIT:
                    RUNNING = False

                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_ESCAPE:
                        RUNNING = False

                    # changes position when key is pressed

                    for player in self.multi_players:
                        player.update()

            #  - updates    

            # place for updates

            #  - draws  -

            self.screen.fill(BLACK)

            self.screen.blit(self.background, self.background.get_rect())

            for player in self.multi_players:
                player.draw(self.screen)

            pygame.display.flip()

            #  - FPS  -

            clock.tick(20)

        #  - quit  -

        pygame.quit()

#                                   

Game().run()