keys[pygame.K_DOWN] and player.rect.y < SCREEN_HEIGHT - player.rect.height:         player.rect.y += PLAYER_SPEED     if keys[pygame.K_LEFT] and player.rect.x > 0:         player.rect.x -= PLAYER_SPEED     if keys[pygame.K_RIGHT] and player.rect.x < SCREEN_WIDTH - player.rect.width:         player.rect.x += PLAYER_SPEED      # 当たり判定     if player.rect.colliderect(enemy.rect):         running = False     if player.rect.colliderect(goal.rect):         running = False         # 画面描画     screen.fill(BLACK)     screen.blit(player.image, player.rect)     screen.blit(enemy.image, enemy.rect)     screen.blit(goal.image, goal.rect)     pygame.display.update()     clock.tick(FPS) # ゲーム終了 pygame.quit()