Pygame 角色没有出现以及如何更改我的背景形状

如何解决Pygame 角色没有出现以及如何更改我的背景形状

我一直在关注这个 youtube 教程，但自从我更改了角色后，他就没有出现在我的屏幕上。我花了几天时间试图找出原因。我已将我的角色保存在与我的游戏相同的文件夹中，但我似乎无法将背景中的第三层矩形（浅绿色矩形）更改为随玩家移动的圆圈。真的很迷茫。谢谢。

import pygame,sys

clock = pygame.time.Clock()

from pygame.locals import *
pygame.init()

pygame.display.set_caption('ATTACK ON THE BOOKERS')

WINDOW_SIZE = (600,400)

screen = pygame.display.set_mode(WINDOW_SIZE,32)

display = pygame.Surface((300,200))

moving_right = False
moving_left = False
gravity = 0
timer = 0

true_scroll = [0,0]

def load_map(path):
    f = open(path + '.txt','r')
    data = f.read()
    f.close()
    data = data.split('\n')
    game_map = []
    for row in data:
        game_map.append(list(row))
    return game_map

game_map = load_map('map')

grass_img = pygame.image.load('grass.png')
dirt_img = pygame.image.load('dirt.png')
cloud_img = pygame.image.load('cloud.png')

Mr_Booker = pygame.image.load('Mr Booker.png').convert()
Mr_Booker.set_colorkey((255,255,255))

player_rect = pygame.Rect(100,100,5,13)

background_objects = [[0.25,[120,10,70,400]],[0.25,[280,30,40,[0.5,[30,[130,90,[300,80,120,400]]]

def collision_test(rect,tiles):
    hit_list = []
    for tile in tiles:
        if rect.colliderect(tile):
            hit_list.append(tile)
    return hit_list

def move(rect,movement,tiles):
    collision_types = {'top':False,'bottom':False,'right':False,'left':False}
    rect.x += movement[0]
    hit_list = collision_test(rect,tiles)
    for tile in hit_list:
        if movement[0] > 0:
            rect.right = tile.left
            collision_types['right'] = True
        elif movement[0] < 0:
            rect.left = tile.right
            collision_types['left'] = True
    rect.y += movement[1]
    hit_list = collision_test(rect,tiles)
    for tile in hit_list:
        if movement[1] > 0:
            rect.bottom = tile.top
            collision_types['bottom'] = True
        elif movement[1] < 0:
            rect.top = tile.bottom
            collision_types['top'] = True
    return rect,collision_types

while True: # game loop
    display.fill((146,244,255))

    true_scroll[0] += (player_rect.x-true_scroll[0]-152)/20
    true_scroll[1] += (player_rect.y-true_scroll[1]-106)/20
    scroll = true_scroll.copy()
    scroll[0] = int(scroll[0])
    scroll[1] = int(scroll[1])

    pygame.draw.rect(display,(7,75),pygame.Rect(0,300,80))
    for background_object in background_objects:
        obj_rect = pygame.Rect(background_object[1][0]-scroll[0]*background_object[0],background_object[1][1]-scroll[1]*background_object[0],background_object[1][2],background_object[1][3])
        if background_object[0] == 0.5:
            pygame.draw.rect(display,(14,222,150),obj_rect)
        else:
            pygame.draw.rect(display,(9,91,85),obj_rect)



    tile_rects = []
    y = 0
    for layer in game_map:
        x = 0
        for tile in layer:
            if tile == '1':
                display.blit(dirt_img,(x*16-scroll[0],y*16-scroll[1]))
            if tile == '2':
                display.blit(grass_img,y*16-scroll[1]))
            if tile != '0':
                tile_rects.append(pygame.Rect(x*16,y*16,16,16))
            x += 1
        y += 1

    player_movement = [0,0]
    if moving_right == True:
        player_movement[0] += 2
    if moving_left == True:
        player_movement[0] -= 2
    player_movement[1] += gravity
    gravity += 0.2
    if gravity > 3:
        gravity = 3

    player_rect,collisions = move(player_rect,player_movement,tile_rects)

    if collisions['bottom'] == True:
        timer = 0
        gravity = 0
    else:
        timer += 1

    display.blit(Mr_Booker,(player_rect.x - scroll[0],player_rect.y - scroll[1]))


    for event in pygame.event.get(): # event loop
        if event.type == QUIT:
            pygame.quit()
            sys.exit()
        if event.type == KEYDOWN:
            if event.key == K_RIGHT:
                moving_right = True
            if event.key == K_LEFT:
                moving_left = True
            if event.key == K_UP:
                if timer < 6:
                    gravity = -5
        if event.type == KEYUP:
            if event.key == K_RIGHT:
                moving_right = False
            if event.key == K_LEFT:
                moving_left = False
        
    screen.blit(pygame.transform.scale(display,WINDOW_SIZE),(0,0))
    pygame.display.update()
    clock.tick(60)