def __init__(self, font, text_list, midtop, **kwargs):
"""
Arguments are a font object; a list of strings to make labels from;
and the midtop point of the topmost label. A number of keyword
arguments are accepted to further customize the appearance.
See ZIPPER_DEFAULTS for the accepted keywords.
"""
self.process_kwargs("ZipperBlock", ZIPPER_DEFAULTS, kwargs)
self.stop_x, y = midtop
self.labels, self.rollers = self.make_labels_rolls(font, text_list, y)
top = self.labels[0].rect.top
fade_rect = pg.Rect(300, top, 800, prepare.RENDER_SIZE[1] - top)
self.fader = Fadeout(fade_rect, prepare.BACKGROUND_BASE)
self.state = "Zipping"
self.done = False
def __init__(self, font, text_list, midtop, **kwargs):
"""
Arguments are a font object; a list of strings to make labels from;
and the midtop point of the topmost label. A number of keyword
arguments are accepted to further customize the appearance.
See ZIPPER_DEFAULTS for the accepted keywords.
"""
self.process_kwargs("ZipperBlock", ZIPPER_DEFAULTS, kwargs)
self.stop_x, y = midtop
self.labels, self.rollers = self.make_labels_rolls(font, text_list, y)
top = self.labels[0].rect.top
fade_rect = pg.Rect(300, top, 800, prepare.RENDER_SIZE[1]-top)
self.fader = Fadeout(fade_rect, prepare.BACKGROUND_BASE)
self.state = "Zipping"
self.done = False
class ZipperBlock(tools._KwargMixin):
"""
A block of up to five label+rollers that scroll across the screen
in alternating directions. Used for the credits screen.
"""
def __init__(self, font, text_list, midtop, **kwargs):
"""
Arguments are a font object; a list of strings to make labels from;
and the midtop point of the topmost label. A number of keyword
arguments are accepted to further customize the appearance.
See ZIPPER_DEFAULTS for the accepted keywords.
"""
self.process_kwargs("ZipperBlock", ZIPPER_DEFAULTS, kwargs)
self.stop_x, y = midtop
self.labels, self.rollers = self.make_labels_rolls(font, text_list, y)
top = self.labels[0].rect.top
fade_rect = pg.Rect(300, top, 800, prepare.RENDER_SIZE[1]-top)
self.fader = Fadeout(fade_rect, prepare.BACKGROUND_BASE)
self.state = "Zipping"
self.done = False
def make_labels_rolls(self, font, text_list, y):
"""
Create each text label and a corresponding roller. Arguments are
a font object; a list of strings to make labels from; and the y
coordinate that the top label starts from.
"""
labels = []
rollers = pg.sprite.Group()
for i, text in enumerate(text_list):
if not i%2:
pos = (-self.off, y)
roll = Roller(pos, random.choice(COLORS), "right", self.speed)
r = roll.rect
label = Label(font, self.font_size, text, "goldenrod3",
{"midright": (r.left-self.chip_space,r.centery)})
label.speed = self.speed
else:
pos = (SCREEN_WIDTH+self.off, y)
roll = Roller(pos, random.choice(COLORS), "left", self.speed)
r = roll.rect
label = Label(font, self.font_size, text, "goldenrod3",
{"midleft": (r.right+self.chip_space,r.centery)})
label.speed = -self.speed
label.true_centerx = label.rect.centerx
label.moving = True
labels.append(label)
rollers.add(roll)
y += self.vert_space
return labels, rollers
def update_label(self, label, dt):
"""
Update the position of a label and set label.moving to False if the
label passes the center of the screen.
"""
centerx = label.rect.centerx
frame_speed = self.speed*dt
if label.moving:
label.true_centerx += label.speed*dt
label.rect.centerx = label.true_centerx
if self.stop_x-frame_speed < centerx < self.stop_x+frame_speed:
if label.moving:
label.rect.centerx = self.stop_x
label.moving = False
def update(self, dt):
"""
Update rollers and labels. Once the state changes to "Fading", update
the fader.
"""
self.rollers.update(dt)
if self.state == "Zipping":
for label in self.labels:
self.update_label(label, dt)
if not any(label.moving for label in self.labels):
self.state = "Fading"
elif self.state == "Fading":
self.fader.update(dt)
if self.fader.done:
self.done = True
def draw(self, surface):
"""
Draw all labels; the fader if ready; and any rollers to the target
surface.
"""
for label in self.labels:
label.draw(surface)
if self.state == "Fading":
self.fader.draw(surface)
self.rollers.draw(surface)
class ZipperBlock(tools._KwargMixin):
"""
A block of up to five label+rollers that scroll across the screen
in alternating directions. Used for the credits screen.
"""
def __init__(self, font, text_list, midtop, **kwargs):
"""
Arguments are a font object; a list of strings to make labels from;
and the midtop point of the topmost label. A number of keyword
arguments are accepted to further customize the appearance.
See ZIPPER_DEFAULTS for the accepted keywords.
"""
self.process_kwargs("ZipperBlock", ZIPPER_DEFAULTS, kwargs)
self.stop_x, y = midtop
self.labels, self.rollers = self.make_labels_rolls(font, text_list, y)
top = self.labels[0].rect.top
fade_rect = pg.Rect(300, top, 800, prepare.RENDER_SIZE[1] - top)
self.fader = Fadeout(fade_rect, prepare.BACKGROUND_BASE)
self.state = "Zipping"
self.done = False
def make_labels_rolls(self, font, text_list, y):
"""
Create each text label and a corresponding roller. Arguments are
a font object; a list of strings to make labels from; and the y
coordinate that the top label starts from.
"""
labels = []
rollers = pg.sprite.Group()
for i, text in enumerate(text_list):
if not i % 2:
pos = (-self.off, y)
roll = Roller(pos, random.choice(COLORS), "right", self.speed)
r = roll.rect
label = Label(
font, self.font_size, text, "goldenrod3",
{"midright": (r.left - self.chip_space, r.centery)})
label.speed = self.speed
else:
pos = (SCREEN_WIDTH + self.off, y)
roll = Roller(pos, random.choice(COLORS), "left", self.speed)
r = roll.rect
label = Label(
font, self.font_size, text, "goldenrod3",
{"midleft": (r.right + self.chip_space, r.centery)})
label.speed = -self.speed
label.true_centerx = label.rect.centerx
label.moving = True
labels.append(label)
rollers.add(roll)
y += self.vert_space
return labels, rollers
def update_label(self, label, dt):
"""
Update the position of a label and set label.moving to False if the
label passes the center of the screen.
"""
centerx = label.rect.centerx
frame_speed = self.speed * dt
if label.moving:
label.true_centerx += label.speed * dt
label.rect.centerx = label.true_centerx
if self.stop_x - frame_speed < centerx < self.stop_x + frame_speed:
if label.moving:
label.rect.centerx = self.stop_x
label.moving = False
def update(self, dt):
"""
Update rollers and labels. Once the state changes to "Fading", update
the fader.
"""
self.rollers.update(dt)
if self.state == "Zipping":
for label in self.labels:
self.update_label(label, dt)
if not any(label.moving for label in self.labels):
self.state = "Fading"
elif self.state == "Fading":
self.fader.update(dt)
if self.fader.done:
self.done = True
def draw(self, surface):
"""
Draw all labels; the fader if ready; and any rollers to the target
surface.
"""
for label in self.labels:
label.draw(surface)
if self.state == "Fading":
self.fader.draw(surface)
self.rollers.draw(surface)
