您不必在播放器周围移动背景和对象矩形,您只需移动播放器并使用滚动偏移值来跟踪 blitted 对象必须偏移多少。您不会将滚动值应用于 rect 位置,因为 rect 位置不像 blit 对象那样相对于窗口。以下是您如何实现这一目标的示例。
import pygame, sys
clock = pygame.time.Clock()
from pygame.locals import *
pygame.init()
pygame.display.set_caption("Scrolling example")
WINDOW_SIZE = (600, 400)
screen = pygame.display.set_mode(WINDOW_SIZE, 0, 32)
scroll = [0, 0]
player = pygame.Rect(100, 100, 10, 10)
up = False
down = False
left = False
right = False
blocks = [pygame.Rect(250,250,50,50)]
while True:
screen.fill((0, 0, 0))
scroll[0] += (player.x - scroll[0] - (WINDOW_SIZE[0]/2)) // 20
scroll[1] += (player.y - scroll[1] - (WINDOW_SIZE[1]/2)) // 20
player_movement = [0, 0]
if right == True:
player_movement[0] += 2
if left == True:
player_movement[0] -= 2
if up == True:
player_movement[1] -= 2
if down == True:
player_movement[1] += 2
player.x += player_movement[0]
player.y += player_movement[1]
player_scroll_rect = player.copy()
player_scroll_rect.x -= scroll[0]
player_scroll_rect.y -= scroll[1]
pygame.draw.rect(screen, (255,255,255), player_scroll_rect)
for block in blocks:
scroll_block = block.copy()
scroll_block.x = scroll_block.x - scroll[0]
scroll_block.y = scroll_block.y - scroll[1]
pygame.draw.rect(screen, (0,0,255), scroll_block)
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()
if event.type == KEYDOWN:
if event.key == K_RIGHT:
right = True
if event.key == K_LEFT:
left = True
if event.key == K_UP:
up = True
if event.key == K_DOWN:
down = True
if event.type == KEYUP:
if event.key == K_RIGHT:
right = False
if event.key == K_LEFT:
left = False
if event.key == K_UP:
up = False
if event.key == K_DOWN:
down = False
pygame.display.update()
clock.tick(60)
如果您需要使用图像的解决方案,请咨询我。
此外,您可以在此处找到有关滚动的更多信息:https://www.youtube.com/watch?v=5q7tmIlXROg