您必须单击退出按钮才能看到正在变暗的图形，即使您命令它移动，播放器也不会移动。我不明白这里可能出现什么问题。它是功能还是我错过了更新？
以下是代码：
import pygame
import random
import os
from pygame import *
WIDTH = 1024
HEIGHT = 700
HALF_WIDTH = (WIDTH / 2)
HALF_HEIGHT = (HEIGHT / 2)
FPS = 30
game_folder = os.path.dirname(__file__)
car = os.path.join(game_folder,"img")
DEPTH = 32
DISPLAY = (WIDTH, HEIGHT)
FLAGS = 0
CAMERA_SLACK = 30
#Colors
RED =(255,0,0)
BLUE =(0,255,0)
GREEN =(0,0,255)
WHITE =(255,255,255)
BLACK= (0,0,0)
def main():
global cameraX, cameraY
#INITIALIZE
pygame.init()
screen = pygame.display.set_mode(DISPLAY,FLAGS,DEPTH)
pygame.display.set_caption("Plato's Life")
clock = pygame.time.Clock()
up = down = left = right = False
bg = Surface((32,32))
bg.convert()
bg.fill(WHITE)
group= pygame.sprite.Group()
player = Player(32, 32)
platforms = []
#making Level
x = y = 0
Level= ["TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T T",
"T TT TT TTTTTTT TTTTTTT TTTTTTT TTTTTTT TT TTTTTT TT TTTTT TTTTTT TT TT TTTTT T",
"T TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT T",
"T TT TT TTTTTTT TTTTT TT TT TT TT TT TT TT TT TT TT TT TT TT TTTT T",
"T TT TT TT TT TTTTTTTTT TT TT TT TTTTTT TT TT TT TT TTT TT TT TT T",
"T TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT T TT TT TT T",
"T TTTTTTTTT TT TT TTTTTTT TTTTTTT TT TTTTTTT TT TT TT TTTTT TTTTT TTTTTT TTTTTT TTTTT T",
"T TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT",
"T TT TT TT TT TT TT TTT TTT TTT TTT TT TTT",
"T TTTTTT TTTTTT TTTTTT TTTTTT TTTTTT TTTTTT TTT TTT TTT TTT TTT TTT TTT TTT TT TTTT",
"T TT TT TT TT TT TT TTT TTT TTT TTT TTTTT",
"TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT TTTTTT",
"TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT TTTTTT",
"T T T",
"T TTTTTTTTTT TTTTTTTTTT TTT TTTTTTTTT TTTTTTTTT TTTTTTTTT TTTTTTTTTT TTT T",
"T TTTTTTTTTT TTT TT TTT TTT TTT TTT TTT TTT TTTTTTTTTT TTTTT T",
"T TTTTTTTTTT TTT TT TTT TTT TTT TTT TTT TTT TTTTTTTTTT TTTTTTT T",
"T TTTTTTTTTT TTTTTTTTTT TTT TTTTTTTTT TTT TTT TTT TTTTTTTTTT TTT T",
"T TTTTTTTTTT TTT TTT TTT TTT TTT TTT TTT TTTTTTTTTT TTT T",
"T TTTTTTTTTT TTT TTTTTTTTTT TTT TTT TTT TTTTTTTTT TTTTTTTTTT TTT T",
"T T",
"T TTTTT T TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT",
"T TTTTT T TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT",
"T TTTTT T TTTTT TTTT T",
"T TTTTT T TTTTT TT TTTT TTTT TTTT TTTT T",
"T TTTTT T TTTTT TTTTTTT TTT TTT T TTT TTTTTTTTT T",
"T TTTTT T TTTTT TTTTTT TTT TTT TTT TTT TTT TTT TT TTT T",
"T TTTTT TTTTTT TTTTTTTT TTT TTT TTT TTT TTT TTT TT TTT T",
"T TTTTT TTTTTT TTTTTTTTTT TTT TTT TTT TTT TTT TTT TTT TT TTTT",
"T TTTTT T TTTTTTTTTTTTTTTTTT TTT TTTT TTTT TTTT TT TTT",
"T TTTTT T TTTTT TT TTT TTT TT T",
"T TTTTT T T TTT TTT TTT TTT TTT TTTTT TT TTT T",
"T TTTTT TT TTTTTT T TTTTTTTTTTT TTT TTT TTT TTT TT TT TT TTT T",
"T TTTTT TTT TTTTTT TTT TTT TTT TTT TTT TTT TTT TT TTT T",
"T TTTTTTTTTTT TTTTTT TTT TTTTTTTTTTTTTTTTTTTTTTTTTTT TTTTTTTTTTT TTTTTTTTTTTTT T",
"T TTTTTTTTTTTT TTTTTT TTT T T",
"T TTTTTTTTTTTTTTTTTTTTTTTTT TTTTTTT TTTTTTT TTT TTT TTTTTTT TTTTTTT TTTTTTT T",
"T TT TTT TT TTTTTTT TTTTTTT TTTTTTT TTT TTT TT TTTTTTT TTTTTTT TTTTTTT T",
"TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT",
]
#build level
for rows in Level:
for col in rows:
if col == "T":
p = Platform(x,y)
platforms.append(p)
group.add(p)
if col == "E":
e= Exitblock(x,y)
platforms.append(e)
group.add(e)
x += 32
y += 32
x = 0
#camera
total_level_width = len(Level[0])* 32
total_level_height = len(Level) * 32
camera = Camera(complex_camera,total_level_width, total_level_height)
#events
running= True
while running:
clock.tick(FPS)
for event in pygame.event.get():
if event.type == pygame.QUIT:
running= False
if event.type == KEYDOWN and event.key == K_ESCAPE:
raise SystemExit
if event.type == KEYDOWN and event.type == K_LEFT:
left = True
if event.type == KEYDOWN and event.type == K_RIGHT:
right = True
if event.type == KEYDOWN and event.type == K_UP:
up = True
if event.type == KEYDOWN and event.type == K_DOWN:
down = True
if event.type == KEYUP and event.type == K_UP:
up = False
if event.type == KEYUP and event.type == K_DOWN:
down = False
if event.type == KEYUP and event.type == K_RIGHT:
right = False
if event.type == KEYUP and event.type == K_LEFT:
up = False
#Background
for y in range(32):
for x in range(32):
screen.blit(bg,(x * 32, y * 32))
camera.update(player)
player.update(up, down, left, right, platforms)
for e in group:
screen.blit(e.image, camera.apply(e))
group.add(player)
#screen fill
group.draw(screen)
#flip
pygame.display.update()
pygame.display.flip()
class Player (pygame.sprite.Sprite):
def __init__(self, x, y):
pygame.sprite.Sprite.__init__(self)
self.image= pygame.image.load(os.path.join(car, "plato.png")).convert()
self.image.set_colorkey(WHITE)
self.rect= Rect(x, y, 32, 32)
self.speedx= 0
self.speedy= 0
def update(self, up, down, left, right, platforms):
self.speedx,self.speedy = 0,0
if left:
self.speedx = -10
elif right:
self.speedx = 10
elif up:
self.speedy -= 10
elif down:
self.speedy += 10
self.rect.x += self.speedx
self.collide(self.speedx, 0, platforms)
self.rect.y += self.speedy
self.collide(0,self.speedy ,platforms)
def collide(self, speedx, speedy, platforms):
for t in platforms:
if pygame.sprite.collide_rect(self, t):
if isinstance (p, Exitblock):
pygame.event.post(pygame.event.Event(QUIT))
if speedx > 0:
self.rect.right = t.rect.left
if speedx < 0:
self.rect.left = t.rect.right
if speedy > 0:
self.rect.bottom = t.rect.top
if speedy < 0:
self.rect.top = t.rect.bottom
#Camera
class Camera(object):
def __init__(self, camera_func, width, height):
self.camera_func = camera_func
self.state = Rect(0, 0, width, height)
def apply(self, target):
return target.rect.move(self.state.topleft)
def update(self, target):
self.state = self.camera_func(self.state, target.rect)
def simple_camera(camera, target_rect):
l, t, _, _ = target_rect
_, _, w, h = camera
return Rect(-l+HALF_WIDTH, -t+HALF_HEIGHT, w, h)
def complex_camera(camera, target_rect):
l, t, _, _ = target_rect
_, _, w, h = camera
l, t, _, _ = -l+HALF_WIDTH, -t+HALF_HEIGHT, w, h
l = min(0, l) # stop scrolling at the left edge
l = max(-(camera.width- WIDTH), l) # stop scrolling at the right edge
t = max(-(camera.height- HEIGHT), t) # stop scrolling at the bottom
t = min(0, t) # stop scrolling at the top
return Rect(l, t, w, h)
#Platform
class Platform(pygame.sprite.Sprite):
def __init__(self, x, y):
pygame.sprite.Sprite.__init__(self)
self.image = Surface((32, 32))
self.image.convert()
self.image.fill(Color("#DDDDDD"))
self.rect = Rect(x, y, 32, 32)
def update(self):
pass
class ExitBlock(Platform):
def __init__(self, x, y):
Platform.__init__(self, x, y)
self.image.fill(Color("#0033FF"))
if __name__ == "__main__":
main()
答案 0 :(得分：1)
问题在于事件循环。您正在检查是否event.type == K_LEFT等，而您应该检查是否event.key == K_LEFT。这是固定循环：
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
elif event.type == KEYDOWN:
if event.key == K_ESCAPE:
running = False
elif event.key == K_LEFT:
left = True
elif event.key == K_RIGHT:
right = True
elif event.key == K_UP:
up = True
elif event.key == K_DOWN:
down = True
elif event.type == KEYUP:
if event.key == K_UP:
up = False
elif event.key == K_DOWN:
down = False
elif event.key == K_RIGHT:
right = False
elif event.key == K_LEFT:
left = False
相机没有用，因为绘图代码有点复杂。以下是事件循环下方的代码（将player添加到while循环上方的group）：
# Update the camera and the player.
player.update(up, down, left, right, platforms)
camera.update(player)
# Draw everything.
screen.fill((30, 30, 30))
for e in group:
screen.blit(e.image, camera.apply(e))
pygame.display.flip()
此外，在collide方法中，您必须更改isinstance行：
def collide(self, speedx, speedy, platforms):
for t in platforms:
if pygame.sprite.collide_rect(self, t):
if isinstance(t, ExitBlock):