def menu_show(self,window):
'''
show the process of the menu.
ID of the option box at the leftmost is 0, and IDs of option boxes increases toward right.
:param window: instance of class Window.
:return: return the ID of the option box that player chooses.
'''
choose = -1
animation_height = window.height-self.option_box[0].height
while True:
#check whether player triggers exit mechanism
#if so, exit the program
if(window.monitor_event()):
exit()
#control the animation of option boxes
mouse_x, mouse_y = window.get_mouse_pos()
if animation_height < mouse_y < window.height:
self.option_boxes_up(window)
else:
self.option_boxes_down(window)
#check whether player chooses one of the option box.
#if so, return the ID of that option box
choose = self.check_mouse_click(window)
if choose != -1:
break
window.render(menu=self,optionboxes=self.option_box)
return choose
def option_boxes_up(self,window):
begin = end = window.get_time()
speed = 0.03
if len(self.option_box):
#trigger the animation of the option boxes
while self.option_box[0].y > window.height - self.option_box[0].height:
end = window.get_time()
if end > begin + speed:
for i in self.option_box:
if i.y > window.height-i.height:
i.y -= 80
begin += speed
window.render(menu=self,optionboxes=self.option_box)
#change the icon of the option bow where mouse is on.
mouse_x, mouse_y = window.get_mouse_pos()
for item in self.option_box:
if item.x < mouse_x < item.x + item.width\
and item.y < mouse_y < item.y + item.height:
item.onclick_listener(True)
else:
item.onclick_listener(False)
window.render(menu=self,optionboxes=self.option_box)
def option_boxes_down(self,window):
begin = end = window.get_time()
speed = 0.03
if len(self.option_box):
while self.option_box[0].y < window.height:
end = window.get_time()
if end > begin + speed:
for i in self.option_box:
if i.y < window.height:
i.y += 80
begin += speed
window.render(menu=self,optionboxes=self.option_box)
