为什么不能移动播放器精灵和相机？

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()

1条回答

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1楼 · 发布于 2024-09-29 02:22:51

问题在于事件循环。您正在检查是否event.type == K_LEFT，等等，而您应该检查是否event.key == K_LEFT。下面是固定循环：

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

相机坏了，因为绘图代码有点复杂。下面是事件循环下面的代码（将player添加到while循环上面的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()

另外，在collide方法中，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):

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