Pygame，我需要随机重复障碍物

Question

import pygame
import random

screen_width = 500
screen_height = 500

pygame.init()
screen = pygame.display.set_mode((screen_width,screen_height))
clock = pygame.time.Clock()


black = (0, 0, 0)
red = (255,0,0)
blue = (0, 0, 255)


fps = 30


#the size of our player square
playerSize = 50

#rectangles get declared with x, y, w, h
obstacle = [0, 0, 350, 50]
obstacle2 = [150, 0, 410, 50]


obstacleMoveSpeed = 5
#how fast to move obstalce down







def check_collision(playerRect, obstacleRect):
    #convert rectangles into x,y,w,h
    playerX = playerRect[0]
    playerY = playerRect[1]
    playerWidth = playerRect[2]
    playerHeight = playerRect[3]

    obstacleX = obstacle[0]
    obstacleY = obstacle[1]
    obstacleWidth = obstacle[2]
    obstacleHeight = obstacle[3]

    obstacleX2 = obstacle2[0]
    obstacleY2 = obstacle2[1]
    obstacleWidth2 = obstacle2[2]
    obstacleHeight2 = obstacle2[3]



    #get the right left top and bottom
    myRight = playerX + playerWidth
    myLeft = playerX
    myTop = playerY
    myBottom = playerY + playerHeight

    otherRight = obstacleX + obstacleWidth
    otherLeft = obstacleX
    otherTop = obstacleY
    otherBottom = obstacleY + obstacleHeight

    otherRight2 = obstacleX2 + obstacleWidth2
    otherLeft2 = obstacleX2
    otherTop2 = obstacleY2
    otherBottom2 = obstacleY2 + obstacleHeight2

    #now the collision code
    collision = True

    if ((myRight < otherLeft) or (myLeft > otherRight) or (myBottom < otherTop) or (myTop > otherBottom)):
        collision = False

    if ((myRight < otherLeft2) or (myLeft > otherRight2) or (myBottom < otherTop2) or (myTop > otherBottom2)):
        collision = False

    return collision

"""def randomOb(randomize, obstacle, obstacle2):



                if randomize == 0:
                        pygame.draw.rect(screen, red, obstacle)
                        obstacle = [0, 0, 350, 50]
                        randomize = random.randrange(0,2)
                if randomize == 1:
                        pygame.draw.rect(screen, red, obstacle2)
                        obstacle2 = [150, 0, 410, 50]
                        randomize = random.randrange(0,2)

                randomize = random.randrange(0,2)
                return randomize"""

def game_loop():


        randomize = random.randrange(0,2)
        playerRect = [(screen_width / 2)-(playerSize/2), 400, playerSize, playerSize]
        #(screen_width / 2)-(playerSize/2) just figures out how to center the player
        while 1:

                for event in pygame.event.get():
                        if event.type == pygame.QUIT:
                                exit()
                        if event.type == pygame.KEYDOWN:
                                if event.key == pygame.K_LEFT:
                                        playerRect = [(screen_width * 0.2)-(playerSize/2), 400, playerSize, playerSize]
                                if event.key == pygame.K_RIGHT:
                                        playerRect = [(screen_width * 0.8)-(playerSize/2), 400, playerSize, playerSize]
                        if event.type == pygame.KEYUP:
                                if event.key == pygame.K_LEFT or event.key == pygame.K_RIGHT:
                                        playerRect = [(screen_width / 2)-(playerSize/2), 400, playerSize, playerSize]







                #move obstacle downward
                obstacle[1] = obstacle[1] + obstacleMoveSpeed
                obstacle2[1] = obstacle2[1] + obstacleMoveSpeed



                if (check_collision(playerRect, obstacle)):
                        print("COLLISION")



                #drawing code
                screen.fill(black)


                #draw our player
                pygame.draw.rect(screen, blue, playerRect)

                pygame.draw.rect(screen, red, obstacle)

                """randomOb(randomize, obstacle, obstacle2)
                if obstacle[1] > 500 or obstacle2[1] > 500:
                        randomize = random.randrange(0,2)
                        randomOb(randomize, obstacle, obstacle2)"""


                pygame.display.update()

                clock.tick(fps)


game_loop()

我需要随机重复我的障碍。现在我只有两个障碍，但会增加。我想把物体定向放在这之外。每当我尝试这样做，它会调用随机变量，它会调用我的障碍很多次，或者它会调用一个障碍，但不会重复另一个障碍。在

Answer 1

如果你想让同一个障碍物随机重复，最简单的方法是在游戏循环检查中添加一个子句，看看对象是否离开屏幕，如下所示：

import pygame
import random

screen_width = 500
screen_height = 500

pygame.init()
screen = pygame.display.set_mode((screen_width,screen_height))
clock = pygame.time.Clock()


black = (0, 0, 0)
red = (255,0,0)
blue = (0, 0, 255)

fps = 30


#the size of our player square
playerSize = 50

#rectangles get declared with x, y, w, h
obstacle = [0, 0, 350, 50]


obstacleMoveSpeed = 5
#how fast to move obstalce down


def check_collision(playerRect, obstacleRect):
    #convert rectangles into x,y,w,h
    playerX = playerRect[0]
    playerY = playerRect[1]
    playerWidth = playerRect[2]
    playerHeight = playerRect[3]

    obstacleX = obstacle[0]
    obstacleY = obstacle[1]
    obstacleWidth = obstacle[2]
    obstacleHeight = obstacle[3]

    #get the right left top and bottom
    myRight = playerX + playerWidth
    myLeft = playerX
    myTop = playerY
    myBottom = playerY + playerHeight

    otherRight = obstacleX + obstacleWidth
    otherLeft = obstacleX
    otherTop = obstacleY
    otherBottom = obstacleY + obstacleHeight

    #now the collision code
    collision = True

    if ((myRight < otherLeft) or (myLeft > otherRight) or (myBottom < otherTop) or (myTop > otherBottom)):
        collision = False


    return collision

"""def randomOb(randomize, obstacle, obstacle2):



                if randomize == 0:
                        pygame.draw.rect(screen, red, obstacle)
                        obstacle = [0, 0, 350, 50]
                        randomize = random.randrange(0,2)
                if randomize == 1:
                        pygame.draw.rect(screen, red, obstacle2)
                        obstacle2 = [150, 0, 410, 50]
                        randomize = random.randrange(0,2)

                randomize = random.randrange(0,2)
                return randomize"""

def game_loop():


        randomize = random.randrange(0,2)
        playerRect = [(screen_width / 2)-(playerSize/2), 400, playerSize, playerSize]
        screen_padding = random.randint(0, 100)
        #(screen_width / 2)-(playerSize/2) just figures out how to center the player
        while 1:

                for event in pygame.event.get():
                        if event.type == pygame.QUIT:
                                exit()
                        if event.type == pygame.KEYDOWN:
                                if event.key == pygame.K_LEFT:
                                        playerRect = [(screen_width * 0.2)-(playerSize/2), 400, playerSize, playerSize]
                                if event.key == pygame.K_RIGHT:
                                        playerRect = [(screen_width * 0.8)-(playerSize/2), 400, playerSize, playerSize]
                        if event.type == pygame.KEYUP:
                                if event.key == pygame.K_LEFT or event.key == pygame.K_RIGHT:
                                        playerRect = [(screen_width / 2)-(playerSize/2), 400, playerSize, playerSize]







                #move obstacle downward
                obstacle[1] = obstacle[1] + obstacleMoveSpeed



                if (check_collision(playerRect, obstacle)):
                        print("COLLISION")
                if obstacle[1] > screen_height + screen_padding:
                        obstacle[1] = -50
                        screen_padding = random.randint(0, 100)
                        orientation = bool(random.getrandbits(1))
                        if orientation:
                                obstacle[0] = 0
                        else:
                                obstacle[0] = 150



                #drawing code
                screen.fill(black)


                #draw our player
                pygame.draw.rect(screen, blue, playerRect)

                pygame.draw.rect(screen, red, obstacle)

                """randomOb(randomize, obstacle, obstacle2)
                if obstacle[1] > 500 or obstacle2[1] > 500:
                        randomize = random.randrange(0,2)
                        randomOb(randomize, obstacle, obstacle2)"""


                pygame.display.update()

                clock.tick(fps)


game_loop()

这使得块在到达底部时会到达屏幕的顶部，但有时它不会等待一小段距离，从而改变循环的频率。它还会随机改变障碍物的方向