def _process_ingredient(self, ingredients, on_done):
player = self.engine.player
sprite = Sprite(ingredients[0])
sprite.move_to(player.rect.left, player.rect.centery)
self.layer_map["fg"].add(sprite)
sprite.velocity = (0, 2)
sprite.collidable = False
sprite.moved.connect(lambda dx, dy: self._on_ingredient_moved(sprite, ingredients[1:], on_done))
Timer(ms=500, one_shot=True, cb=sprite.start)
def add_item(self, name, text):
self.has_items[name] = False
item = Sprite(name)
item.move_to(*self.eventboxes[name].rects[0].topleft)
self.layer_map['items'].add(item)
self.connect_eventbox_enter(
name,
lambda: self._on_item_entered(name, text, item),
True)
def show_exclamation(self, exclamation_type='exclamation', on_done=None):
self.stop_wandering()
self.stop_moving()
self.exclamation = Sprite(exclamation_type)
self.layer.add(self.exclamation)
self.exclamation.move_to(
self.rect.centerx - self.exclamation.rect.width / 2,
self.rect.y - self.exclamation.rect.height)
self.exclamation.start()
Timer(ms=self.EXCLAMATION_MS,
cb=lambda: self._on_exclamation_done(on_done),
one_shot=True)
class ChaseMixin(object):
APPROACH_DISTANCE = 250
CHASE_SPEED = 3
STOP_FOLLOWING_DISTANCE = 1000
SHOW_EXCLAMATION = True
EXCLAMATION_MS = 700
FOLLOWING_KEY_NAME = "walking"
def __init__(self, *args, **kwargs):
super(ChaseMixin, self).__init__(*args, **kwargs)
self.following = False
self.exclamation = None
def stop(self):
super(ChaseMixin, self).stop()
self.stop_following()
def tick(self):
super(ChaseMixin, self).tick()
if self.started:
# Figure out how close we are to the player.
player = get_engine().player
distance_x = abs(player.rect.x - self.rect.x)
distance_y = abs(player.rect.y - self.rect.y)
if (self.following and
(distance_x >= self.STOP_FOLLOWING_DISTANCE or
distance_y >= self.STOP_FOLLOWING_DISTANCE)):
self.stop_following()
if (self.following or
(distance_x <= self.APPROACH_DISTANCE and
distance_y <= self.APPROACH_DISTANCE and
not self.following and
(not self.SHOW_EXCLAMATION or not self.exclamation))):
if not self.following and not self.exclamation:
if self.SHOW_EXCLAMATION:
# They haven't noticed the player before, but they
# do now!
self.show_exclamation(on_done=self.start_following)
return
else:
self.start_following()
x_dir = None
y_dir = None
if player.rect.x > self.rect.x:
x = 1
x_dir = Direction.EAST
elif player.rect.x < self.rect.x:
x = -1
x_dir = Direction.WEST
else:
x = 0
if player.rect.y > self.rect.y:
y = 1
y_dir = Direction.SOUTH
elif player.rect.y < self.rect.y:
y = -1
y_dir = Direction.NORTH
else:
y = 0
self.velocity = (x * self.CHASE_SPEED, y * self.CHASE_SPEED)
if distance_x > distance_y:
self.direction = x_dir
elif distance_y > distance_x:
self.direction = y_dir
self.update_image()
super(ChaseMixin, self).tick()
def start_following(self):
self.following = True
self.stop_wandering()
self.velocity = (0, 0)
self.start_animation(self.FOLLOWING_KEY_NAME)
def stop_following(self):
self.following = False
self.stop_moving()
self.wander()
def wander(self):
pass
def stop_wandering(self):
pass
def show_exclamation(self, exclamation_type='exclamation', on_done=None):
self.stop_wandering()
self.stop_moving()
self.exclamation = Sprite(exclamation_type)
self.layer.add(self.exclamation)
self.exclamation.move_to(
self.rect.centerx - self.exclamation.rect.width / 2,
self.rect.y - self.exclamation.rect.height)
self.exclamation.start()
Timer(ms=self.EXCLAMATION_MS,
cb=lambda: self._on_exclamation_done(on_done),
one_shot=True)
def _on_exclamation_done(self, on_done):
if self.exclamation:
self.exclamation.remove()
self.exclamation = None
if on_done:
on_done()
