My "Pull Request"...
- Uses
self.presented_sceneto know if there is a modal scene above self.
- Removes both class variables and global variables -- they are NOT the same thing.
- Does a two second hop from 1st scene to 2nd scene and a two second hop from 2nd scene to 3rd scene without recursion issues.
- Creates scenes on-the-fly when needed to allow them to be garbage collected once they have been closed.
- Adds
card_back_colorto allow one scene class to show card backs of different colors.
# for use with https://github.com/omz/PythonistaAppTemplate
from scene import *
import time
class FirstScene(Scene):
def setup(self):
# get starting time
self.start_time = time.time()
# add background color
SpriteNode(anchor_point=(0, 0), color='white', parent=self,
size=self.size)
self.ship = SpriteNode('test:Pythonista', anchor_point=(0, 0),
parent=self, size=self.size)
def update(self):
# move to new scene after 2 seconds
if not self.presented_scene and time.time() - self.start_time > 2:
self.present_modal_scene(SecondScene())
def touch_began(self, touch):
# self.present_modal_scene(SecondScene())
pass
def touch_ended(self, touch):
if self.ship.frame.contains_point(touch.location):
self.present_modal_scene(SecondScene())
class SecondScene(Scene):
def setup(self):
self.start_time = time.time()
# add background color
SpriteNode(anchor_point=(0, 0), color='green', parent=self,
size=self.size)
self.ship = SpriteNode('spc:EnemyGreen2', parent=self,
position=self.size/2)
def update(self):
if not self.presented_scene and time.time() - self.start_time > 2:
self.present_modal_scene(MainMenuScene())
def touch_began(self, touch):
self.present_modal_scene(MainMenuScene())
class MainMenuScene (Scene):
def setup(self):
# add background color
SpriteNode(anchor_point=(0, 0), color='blue', parent=self,
size=self.size)
self.ace = SpriteNode('card:ClubsA', parent=self, position=(683, 512))
self.king = SpriteNode('card:ClubsK', parent=self, position=(683, 750))
self.queen = SpriteNode('card:ClubsQ', parent=self, position=(683, 238))
def touch_ended(self, touch):
# move to new scenes
if self.ace.frame.contains_point(touch.location):
self.present_modal_scene(CardBackScene('blue'))
elif self.king.frame.contains_point(touch.location):
self.present_modal_scene(CardBackScene('green'))
elif self.queen.frame.contains_point(touch.location):
self.present_modal_scene(CardBackScene('red'))
class CardBackScene(Scene):
def __init__(self, card_back_color='blue'):
Scene.__init__(self)
self.img_name = 'card:Back{}1'.format(card_back_color.title())
def setup(self):
# add background color
SpriteNode(anchor_point=(0, 0), color='white', parent=self,
size=self.size)
self.card = SpriteNode(self.img_name, parent=self,
position=self.size/2)
def touch_ended(self, touch):
# moving back to previous scene, so remove modal makes sense
if self.card.frame.contains_point(touch.location):
self.dismiss_modal_scene()
main_view = SceneView()
main_view.scene = FirstScene()
main_view.present(hide_title_bar=True, animated=False)
