def left_of(self, sprite):
"""Is this sprite left of another sprite"""
(x1, y1, x2, y2) = canvas().bbox(self.spriteid)
(sx1, sy1, sx2, sy2) = canvas().bbox(sprite.spriteid)
# Are we overlapped on y axis and left?
return (y1 < sy2 and y2 > sy1) and (x1 < sx1)
def below(self, sprite):
"""Is this sprite below another sprite (further down the screen)"""
(x1, y1, x2, y2) = canvas().bbox(self.spriteid)
(sx1, sy1, sx2, sy2) = canvas().bbox(sprite.spriteid)
# Are we overlapped on x axis and below?
return (x1 < sx2 and x2 > sx1) and (y2 > sy2)
def above(self, sprite):
"""Is this sprite above another sprite (further up the screen)?"""
(x1, y1, x2, y2) = canvas().bbox(self.spriteid)
(sx1, sy1, sx2, sy2) = canvas().bbox(sprite.spriteid)
# Are we overlapped on x axis and above?
return (x1 < sx2 and x2 > sx1) and (y1 < sy1)
def move(self, x, y):
"""Move by x and y pixels"""
if self.pen:
cx, cy = self.pos()
canvas().create_line(cx,
cy,
cx + x,
cy + y,
width=self.pen_width,
fill=self.pen_colour_hex,
tags="pen")
canvas().move(self.spriteid, x, y)
def __init__(self, imgs, x=100, y=100):
self.costume_ids = []
self.photo_images = []
if isinstance(imgs, list):
tag = ImageSprite.unique_tagname()
else:
imgs = [imgs]
tag = None # Just one sprite
for img in imgs:
if isinstance(img, str):
assert img.lower().endswith(
".gif"), "Sorry, ImageSprite only works with GIFs"
self.photo_images.append(PhotoImage(file=img))
else:
self.photo_images.append(img)
if self.costume_ids:
# Successive sprites are hidden offscreen
x, y = offscreen(x, y)
spriteid = canvas().create_image(x,
y,
image=self.photo_images[-1],
tag=tag)
self.costume_ids.append(spriteid)
super(ImageSprite, self).__init__(self.costume_ids[0])
self.switch_costume(1)
def __init__(self, points, **attribs):
"""Points is a list of (x,y) tuples, with its centre at (0,0)"""
assert isinstance(points[0][0] + points[0][1],
int), "Points should be a list of (x,y) tuples"
self.points = points
self.attribs = attribs
spriteid = canvas().create_polygon(points, attribs)
super(PolygonSprite, self).__init__(spriteid)
self.created_at_x, self.created_at_y = self.pos()
def rotate(self, angle):
"""Rotate this polygon by an angle and redraw it"""
# Capture where this sprite got to
current_x, current_y = self.pos()
dx = current_x - self.created_at_x
dy = current_y - self.created_at_y
self.points = [rotate_point(x, y, angle) for x, y in self.points]
self.replace_canvas_object(canvas().create_polygon(
self.points, self.attribs))
self.created_at_x, self.created_at_y = self.pos()
self.move(dx + 1, dy + 1) # Why is +1 needed?
def delete(self):
"""Delete this sprite from the canvas"""
canvas().delete(self.spriteid)
def height(self):
"""The height in px of this sprite"""
box = canvas().bbox(self.spriteid)
return box[3] - box[1]
def width(self):
"""The width in px of this sprite"""
box = canvas().bbox(self.spriteid)
return box[2] - box[0]
def pos(self):
"""Return (x,y) of this sprite"""
return canvas().bbox(self.spriteid)[0:2]
def right_of(self, sprite):
(x1, y1, x2, y2) = canvas().bbox(self.spriteid)
(sx1, sy1, sx2, sy2) = canvas().bbox(sprite.spriteid)
# Are we overlapped on y axis and right?
return (y1 < sy2 and y2 > sy1) and (x2 > sx2)
def touching(self, sprite):
"""Is this sprite touching another sprite?"""
our_box = canvas().bbox(self.spriteid)
their_box = canvas().bbox(sprite.spriteid)
return overlapping_rect(our_box, their_box) is not None
