You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
43 lines
1.4 KiB
43 lines
1.4 KiB
import pygame
|
|
from pygame.sprite import Sprite
|
|
|
|
class Ship(Sprite):
|
|
def __init__(self, ai_settings, screen):
|
|
"""初始化飞船并设置其初始位置"""
|
|
super(Ship, self).__init__()
|
|
self.screen = screen
|
|
self.ai_settings = ai_settings
|
|
|
|
# 加载飞船图像并获取其外接矩形
|
|
self.image = pygame.image.load('images/ship.png')
|
|
self.rect = self.image.get_rect()
|
|
self.screen_rect = screen.get_rect()
|
|
|
|
# 将每艘新飞船放在屏幕底部中央
|
|
self.rect.centerx = self.screen_rect.centerx
|
|
self.rect.bottom = self.screen_rect.bottom
|
|
|
|
# 在飞船的属性center中存储最小值
|
|
self.center = float(self.rect.centerx)
|
|
# 移动标志
|
|
self.moving_right = False
|
|
self.moving_left = False
|
|
|
|
def update(self):
|
|
"""根据移动标志调整飞船的位置"""
|
|
if self.moving_right and self.rect.right < self.screen_rect.right:
|
|
self.center += self.ai_settings.ship_speed_factor
|
|
if self.moving_left and self.rect.left > 0:
|
|
self.center -= self.ai_settings.ship_speed_factor
|
|
|
|
# 根据self.center更新rect.center
|
|
self.rect.centerx = self.center
|
|
|
|
def center_ship(self):
|
|
"""让飞船在屏幕居中"""
|
|
self.center = self.screen_rect.centerx
|
|
|
|
def blitme(self):
|
|
""""在指定位置绘制飞船"""
|
|
self.screen.blit(self.image, self.rect)
|