这是在 pygame.如何翻转图像(假设一个图像 pig 向右看)时向左看 我按向左箭头键,保持这样 即使我不按任何键或者按向上和向下箭头键。那么当我按下向右箭头键时,如何再次将其切换回向右看,并使其保持这样,即使我不按任何键或按下向上和向下箭头键。
我知道我必须使用pygame.transform.flip()。但是,我不知道如何将其放入我的代码中。
这是主要游戏:
import sys
import pygame
from pig import Pig
pygame.init()
screen_width = 800
screen_height = 600
screen = pygame.display.set_mode((screen_width, screen_height))
pygame.display.set_caption("Flying Pig")
blue_sky = 135, 206, 250
brown = 139, 69, 19
pig = Pig(screen)
while True:
# Accept events
for event in pygame.event.get():
if event.type == pygame.QUIT:
sys.exit()
# Keydown events
elif event.type == pygame.KEYDOWN:
if event.key == pygame.K_RIGHT:
pig.moving_right = True
elif event.key == pygame.K_LEFT:
pig.moving_left = True
elif event.key == pygame.K_UP:
pig.moving_up = True
elif event.key == pygame.K_DOWN:
pig.moving_down = True
# Keyup events
elif event.type == pygame.KEYUP:
if event.key == pygame.K_RIGHT:
pig.moving_right = False
elif event.key == pygame.K_LEFT:
pig.moving_left = False
elif event.key == pygame.K_UP:
pig.moving_up = False
elif event.key == pygame.K_DOWN:
pig.moving_down = False
screen.fill(blue_sky)
pig.blitme()
pig.update()
pygame.display.flip()
pig 类:(这是缩进的。我只是不知道如何在此处正确复制并粘贴我的代码)
import pygame
class Pig():
def __init__(self, screen):
"""Initialize the pig and set its starting position."""
self.screen = screen
# Load the pig image and set pig and screen to rect.
self.image = pygame.image.load('pig.png')
self.rect = self.image.get_rect()
self.screen_rect = screen.get_rect()
# Start the pig at the bottom center of the screen.
self.rect.centerx = self.screen_rect.centerx
self.rect.bottom = self.screen_rect.bottom
# Speed of the pig
self.pig_speed = 1.5
self.center = float(self.pig_speed)
# Set a variable for each movement.
self.moving_right = False
self.moving_left = False
self.moving_up = False
self.moving_down = False
self.direction = ['right', 'left']
def update(self):
"""Update the position of the pig."""
if self.rect.right <= self.screen_rect.right:
if self.moving_right:
self.rect.centerx += self.pig_speed
if self.rect.left > 0:
if self.moving_left:
self.rect.centerx -= self.pig_speed
if self.rect.top > 0:
if self.moving_up:
self.rect.bottom -= self.pig_speed
if self.rect.bottom <= self.screen_rect.bottom:
if self.moving_down:
self.rect.bottom += self.pig_speed
def blitme(self):
"""Draw the pig at its current location."""
self.screen.blit(self.image, self.rect)
最佳答案
添加 pig 的方向变量。将其设置为按下键,不要在按下键时将其更改回来。让移动依赖于 moving_direction 变量,显示的 Sprite 依赖于orientation 变量。
像这样改变blitme:
def blitme(self):
if self.orientation == "Right":
self.screen.blit(self.image, self.rect)
elif self.orientation == "Left":
self.screen.blit(pygame.transform.flip(self.image, False, True), self.rect)
然后你就可以像这样拥有按键逻辑:
elif event.type == pygame.KEYDOWN:
if event.key == pygame.K_RIGHT:
pig.moving_right = True
pig.orientation = "Right"
elif event.key == pygame.K_LEFT:
pig.moving_left = True
pig.orientation = "Left"
elif event.key == pygame.K_UP:
pig.moving_up = True
elif event.key == pygame.K_DOWN:
pig.moving_down = True
通过这种方式,您可以分离显示和移动逻辑。
关于python - 如何在 pygame 中水平翻转图像?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/45601109/