我正在使用pygame制作游戏,希望在第一个屏幕上添加按钮,可以点击以下选项:(i)开始游戏,(ii)加载新的包含说明的屏幕,和(iii)退出程序。
我在网上找到了制作按钮的代码,但是我不太理解它(我不擅长面向对象编程)。如果您能解释一下这段代码在做什么,那就太棒了。此外,当我尝试使用文件路径打开计算机上的文件时,我收到“sh: filepath: Permission denied”错误提示,我不知道该怎么解决。
感谢任何能够帮助我的人。
#load_image is used in most pygame programs for loading images
def load_image(name, colorkey=None):
fullname = os.path.join('data', name)
try:
image = pygame.image.load(fullname)
except pygame.error, message:
print 'Cannot load image:', fullname
raise SystemExit, message
image = image.convert()
if colorkey is not None:
if colorkey is -1:
colorkey = image.get_at((0,0))
image.set_colorkey(colorkey, RLEACCEL)
return image, image.get_rect()
class Button(pygame.sprite.Sprite):
"""Class used to create a button, use setCords to set
position of topleft corner. Method pressed() returns
a boolean and should be called inside the input loop."""
def __init__(self):
pygame.sprite.Sprite.__init__(self)
self.image, self.rect = load_image('button.png', -1)
def setCords(self,x,y):
self.rect.topleft = x,y
def pressed(self,mouse):
if mouse[0] > self.rect.topleft[0]:
if mouse[1] > self.rect.topleft[1]:
if mouse[0] < self.rect.bottomright[0]:
if mouse[1] < self.rect.bottomright[1]:
return True
else: return False
else: return False
else: return False
else: return False
def main():
button = Button() #Button class is created
button.setCords(200,200) #Button is displayed at 200,200
while 1:
for event in pygame.event.get():
if event.type == MOUSEBUTTONDOWN:
mouse = pygame.mouse.get_pos()
if button.pressed(mouse): #Button's pressed method is called
print ('button hit')
if __name__ == '__main__': main()
感谢任何能够帮助我的人。