def __init__(self, world: 'World', level: int, start_pos: Tuple[int, int],
scroll: Vector = Vector(0.05, 0)):
self.level = level
self.start_pos = Vector(
start_pos[0] * BLOCK_SIZE,
(GRID_SIZE[1] - start_pos[1] - 1) * BLOCK_SIZE
)
self.offset = Vector(0, 0)
self.scroll = scroll
self.items: List[LevelItem] = []
self.finished = False
self.counter = 0
self.world = world
self.world.source.last_active_level = self
self.window_size = world.window.get_size()
# Just some initialisation stuff here; less to compute later.
self.background_offset = self.window_size[0] / 2
self.background_image = load_image(LEVEL_BACKGROUND_IMAGE)
self.bg_size = (self.background_image.get_width(), self.background_image.get_height())
self.bg_center = (self.bg_size[0] / 2, self.bg_size[1] / 2)
def __init__(self, window: Window):
super().__init__(window)
from constants import BUTTON_SIZE
window_size = window.get_size()
window_center = (window_size[0] / 2, window_size[1] / 2)
dpi_factor = window.hidpi_factor
button_size = (BUTTON_SIZE[0] * dpi_factor,
BUTTON_SIZE[1] * dpi_factor)
button_font = Font('sans-serif', 16, dpi_factor)
self.bg_image = util.load_image('assets/background.png')
back_btn = Button(window,
'[ Back ]',
Vector(window_center[0] - button_size[0] / 2,
window_size[1] * 2 / 3),
Vector(*button_size),
Color(0, 102, 255),
Color(255, 255, 255),
Color(0, 80, 230),
Color(255, 255, 255),
font=button_font)
back_btn.set_click_handler(self.back)
self.children.append(back_btn)
def get_bounds(self) -> BoundingBox:
size = self.window.get_size()
return BoundingBox(
Vector(0, 0),
Vector(size[0], 0),
Vector(size[0], size[1]),
Vector(0, size[1]),
)
def spline_eval_based_on_y(spNodes, y_value):
"""
Given a spline represented by a bezier and a
y value of interest. Return the (first) point on
the spline matches that y value.
"""
# Find bezier segment of interest
seg = -1
n_seg = len(spNodes) / 4
for i in range(n_seg):
lower = spNodes[i * 4 + 0].y
upper = spNodes[i * 4 + 3].y
if y_value >= lower and y_value <= upper:
seg = i
break
if seg == -1:
print 'Did not find y value in the spline interval'
print 'y= ', y_value
if y_value < spNodes[0].y:
# We are below the minimum y
return ('FAIL', spNodes[0].y, 'FAIL')
else:
# We are abov the maximum y_value
return ('FAIL', spNodes[-1].y, 'FAIL')
b0 = Vector(spNodes[seg * 4 + 0].x, spNodes[seg * 4 + 0].y,
spNodes[seg * 4 + 0].z)
b1 = Vector(spNodes[seg * 4 + 1].x, spNodes[seg * 4 + 1].y,
spNodes[seg * 4 + 1].z)
b2 = Vector(spNodes[seg * 4 + 2].x, spNodes[seg * 4 + 2].y,
spNodes[seg * 4 + 2].z)
b3 = Vector(spNodes[seg * 4 + 3].x, spNodes[seg * 4 + 3].y,
spNodes[seg * 4 + 3].z)
Bx = [b0.x, b1.x, b2.x, b3.x]
By = [b0.y, b1.y, b2.y, b3.y]
Bz = [b0.z, b1.z, b2.z, b3.z]
B = mySpline(Bx, By, Bz)
funData = myData(B, y_value)
for guess in init_guesses:
x0 = guess[0]
x1 = guess[1]
t = secant(zero_fun_y, x0, x1, funData, limits=[0.0, 1.0])
if t != 'FAIL':
break
if t == 'FAIL':
print 'There is a problem finding the t-parameter'
sys.exit(-1)
return bezier3D_eval(t, Bx, By, Bz)
def walk(steps):
loc = Point(0, 0)
direc = Vector(0, 1, 0)
for turn, dist in moves(steps):
if turn == 'R':
direc = -Vector.k().cross(direc)
else:
direc = direc.cross(-Vector.k())
loc += dist * direc
return loc
def __init__(self, window: Window):
super().__init__(window)
from constants import BUTTON_SIZE
self.window_size = window.get_size()
self.window_center = (self.window_size[0] / 2, self.window_size[1] / 2)
dpi_factor = window.hidpi_factor
button_size = (BUTTON_SIZE[0] * dpi_factor,
BUTTON_SIZE[1] * dpi_factor)
button_font = Font('sans-serif', 16, dpi_factor)
self.bg_image = util.load_image('assets/background.png')
self.bg_size = (self.bg_image.get_width(), self.bg_image.get_height())
self.bg_center = (self.bg_size[0] / 2, self.bg_size[1] / 2)
self.logo = util.load_image('assets/logo.png')
self.logo_size = (self.logo.get_width(), self.logo.get_height())
self.logo_center = (self.logo_size[0] / 2, self.logo_size[1] / 2)
self.max_score = 0
self.last_active_level = None
self.text_font = Font('monospace', 20, window.hidpi_factor)
self.text_font_color = Color(255, 255, 255)
# Template to create new button
start_btn = Button(window,
'[ Start ]',
Vector(self.window_center[0] - button_size[0] / 2,
self.window_center[1] - button_size[1]),
Vector(*button_size),
Color(0, 102, 255),
Color(255, 255, 255),
Color(0, 80, 230),
Color(255, 255, 255),
font=button_font)
start_btn.set_click_handler(self.start)
self.children.append(start_btn)
help_btn = Button(window,
'[ Help ]',
Vector(self.window_center[0] - button_size[0] / 2,
self.window_center[1] + button_size[1]),
Vector(*button_size),
Color(0, 102, 255),
Color(255, 255, 255),
Color(0, 80, 230),
Color(255, 255, 255),
font=button_font)
help_btn.set_click_handler(self.help)
self.children.append(help_btn)
def _on_click(self, pos: Tuple[int, int]):
"""
Called whenever the window receives a mouse click event.
Passes the event to the handler.
"""
if self.handler is not None:
self.handler.on_click(Vector(*pos))
if self._mouse_down:
self._mouse_down = False
if self.handler is not None:
self.handler.on_mouse_up(Vector(*pos))
def walk2(steps):
loc = Point(0, 0)
visited = {loc}
direc = Vector(0, 1, 0)
for turn, dist in cycle(moves(steps)):
if turn == 'R':
direc = -Vector.k().cross(direc)
else:
direc = direc.cross(-Vector.k())
for _ in range(dist):
loc += direc
if loc in visited:
return loc
else:
visited.add(loc)
def _on_drag(self, pos: Tuple[int, int]):
"""
Called whenever the window receives a mouse drag event.
Passes the event to the handler.
"""
if not self._mouse_down:
self._mouse_down = True
self._last_mouse_pos = pos
if self.handler is not None:
self.handler.on_mouse_down(Vector(*pos))
else:
if self.handler is not None:
self.handler.on_drag(Vector(*self._last_mouse_pos),
Vector(*pos))
def on_collide(self, player: 'Player'):
# Perform a "hopping off" animation and disable collision
player.on_ground = False
player.is_dying = True
player.vel = Vector(
math.copysign(PLAYER_DEATH_VELOCITY[0], player.vel.x),
-PLAYER_DEATH_VELOCITY[1])
def find_location(cp):
right = Vector(1, 0, 0)
down = Vector(0, 1, 0)
loc = Point(0, 0)
size = 100
right_edge = Vector(size - 1, 0, 0)
bottom_edge = Vector(0, size - 1, 0)
while not (cp(loc + right_edge) and cp(loc + bottom_edge)):
while not cp(loc + bottom_edge):
loc += right
while not cp(loc + right_edge):
loc += down
return loc
def __init__(self,
window: Window,
text: str,
pos: Vector,
size: Vector = Vector(150, 50),
bg: Color = Color(200, 200, 200),
fg: Color = Color(20, 20, 20),
bg_over: Color = Color(220, 220, 220),
fg_over: Color = Color(20, 20, 20),
border_size: int = 0,
font: Font = Font('sans-serif', 15, HIDPI_FACTOR)):
super().__init__(window)
self._click_handler = None
self.text = text
self.pos = pos
self.size = size
# Initial colours
self.bg = bg
self.fg = fg
self.bg_over = bg_over
self.fg_over = fg_over
# Extra
self.font = font
self.border_size = border_size
# Center
self.center = (self.pos[0] + self.size[0] / 2,
self.pos[1] + self.size[1] / 2)
# Get corners
self.bounds = BoundingBox(pos, pos + size)
def combine_chains(chain1: EpicycleChain1D,
chain2: EpicycleChain1D,
tag_name,
color='black'):
assert chain1.canvas == chain2.canvas
assert chain1.num_vectors == chain2.num_vectors
rotation = (chain1.rotation + chain2.rotation) / 2
result_chain = EpicycleChain1D(chain1.canvas,
chain1.origin_point,
rotation,
tag_name=tag_name)
N = chain1.num_vectors
c = result_chain.canvas
result_chain.vectors = [Vector(Point(0, 0), Point(0, 0)) for i in range(N)]
result_chain.epicycles = [
(
c.create_line(0, 0, 0, 0, tag=tag_name,
fill=color), # , arrow=tk.LAST),
c.create_oval(0, 0, 0, 0, tag=tag_name, outline=color))
for i in range(N)
]
for i in range(N):
result_chain.vectors[i] = chain1.vectors[i] + chain2.vectors[i]
result_chain.num_vectors = N
return result_chain
def get_bounds(self) -> BoundingBox:
pos = self.get_pos()
size = self.get_size()
pos = Vector(
pos[0] * BLOCK_SIZE,
(GRID_SIZE[1] - pos[1] - 1) * BLOCK_SIZE,
)
size = Vector(
size[0] * BLOCK_SIZE,
size[1] * BLOCK_SIZE,
)
pos = pos - self.world.level.offset
size = size
return BoundingBox(pos, pos + size)
def paint(codes, start=0):
c = Computer(codes)
loc = Point(0, 0)
direc = Vector(0, 1, 0)
panels = {loc: start}
while c.running:
c.run([panels.get(loc, 0)])
turn = c.output.pop()
color = c.output.pop()
panels[loc] = color
if turn == 0: # Turn left
direc = Vector.k().cross(direc)
elif turn == 1: # Turn right
direc = direc.cross(Vector.k())
loc += direc
return panels
def get_text_bounds(self, text: str) -> Vector:
"""
Returns to bounds of the text in this font.
"""
font_name = self.face
if font_name in simplegui._SIMPLEGUIFONTFACE_TO_PYGAMEFONTNAME:
font_name = simplegui._SIMPLEGUIFONTFACE_TO_PYGAMEFONTNAME[
font_name]
bounds = pygame.font.SysFont(font_name,
int(self.size *
self.hidpi_factor)).size(text)
return Vector(bounds[0], bounds[1])
def __init__(self, world: 'World'):
super().__init__(world.window)
self.world = world
self.size = Vector(*PLAYER_SIZE)
self.pos = world.level.start_pos
self.last_pos = self.pos.copy()
self.last_x = 0
self.vel = Vector(0, 0)
self.accel = Vector(0, 0)
self.on_ground = False
self.jumping = False
self.moving_x = False
self.is_dying = False
self.desired_platform = None
self.score = 0
self.lives = 3
self.sprite_cols = 8
self.sprite = Sprite('assets/player.png', self.sprite_cols, 1)
self.roll = 0
def merge_vectors(vectors1, vectors2):
assert vectors1[0].p_from == vectors2[0].p_from
assert len(vectors1) == len(vectors2)
vectors = []
x_prev, y_prev = list(vectors1[0].p_from.get_iter())
for i in range(len(vectors1)):
rel_vec1 = (vectors1[i].p_to[0] - vectors1[i].p_from[0],
vectors1[i].p_to[1] - vectors1[i].p_from[1])
rel_vec2 = (vectors2[i].p_to[0] - vectors2[i].p_from[0],
vectors2[i].p_to[1] - vectors2[i].p_from[1])
rel_vec = rel_vec1[0] + rel_vec2[0], rel_vec1[1] + rel_vec2[1]
x_cur, y_cur = x_prev + rel_vec[0], y_prev + rel_vec[1]
vectors.append(Vector(Point(x_prev, y_prev), Point(x_cur, y_cur)))
x_prev, y_prev = x_cur, y_cur
return vectors
def _init_epicycles(self, color):
c = self.canvas
self.epicycles = [
(
c.create_line(0, 0, 0, 0, tag=self.tag_name, fill=color),
# , activefill=color, arrow=tk.LAST, arrowshape="10 20 10"
c.create_oval(0,
0,
0,
0,
tag=self.tag_name,
outline=color,
width=2)) for i in range(self.num_vectors)
]
self.vectors = [
Vector(Point(0, 0), Point(0, 0)) for i in range(self.num_vectors)
]
def walk_scaffold(layout, robot):
direcs = {
'>': Vector(1, 0, 0),
'<': Vector(-1, 0, 0),
'^': Vector(0, -1, 0),
'V': Vector(0, 1, 0)
}
scaffold = '#'
cur_loc = Point(*robot[:2])
cur_dir = direcs[robot[-1]]
cur_run = 0
moves = []
while True:
#print(cur_loc, cur_dir)
next_loc = cur_loc + cur_dir
if valid_index(
layout,
next_loc) and layout[next_loc.y][next_loc.x] == scaffold:
cur_loc = next_loc
cur_run += 1
else:
if cur_run:
moves.append(cur_run)
cur_run = 0
# All of the directions are kinda flipped from expected because we're in a coordinate system
# where +y is down.
if cur_dir.x == 1:
left = cur_loc.down
right = cur_loc.up
elif cur_dir.x == -1:
left = cur_loc.up
right = cur_loc.down
elif cur_dir.y == 1:
left = cur_loc.right
right = cur_loc.left
elif cur_dir.y == -1:
left = cur_loc.left
right = cur_loc.right
if valid_index(layout,
left) and layout[left.y][left.x] == scaffold:
moves.append('L')
cur_dir = cur_dir.cross(Vector.k())
elif valid_index(layout,
right) and layout[right.y][right.x] == scaffold:
moves.append('R')
cur_dir = Vector.k().cross(cur_dir)
else:
break
return ','.join(str(i) for i in moves)
def draw(self,
canvas: simplegui.Canvas,
pos: Vector,
size: Optional[Vector] = None,
index: Tuple[int, int] = (0, 0)):
"""
Draw the sprite on the canvas.
"""
source_center = [
self.sprite_size[i] * index[i] + self.sprite_center[i]
for i in [0, 1]
]
if size is not None:
size = size.into_tuple()
else:
size = self.sprite_size
canvas.draw_image(self.image, source_center, self.sprite_size,
pos.into_tuple(), size)
def update_vectors_by_time(self, time):
x_prev, y_prev = self.x0, self.y0
j = 0
self.fourier_vectors = sorted(self.fourier_vectors,
key=lambda i: i.amp,
reverse=True)
for f_vec in self.fourier_vectors:
# for f_vec in self.fourier_vectors:
rad = f_vec.amp
x_cur = x_prev + rad * math.cos(time * f_vec.freq + f_vec.phase +
self.rotation)
y_cur = y_prev + rad * math.sin(time * f_vec.freq + f_vec.phase +
self.rotation)
self.vectors[j] = Vector(Point(x_prev, y_prev),
Point(x_cur, y_cur))
x_prev, y_prev = x_cur, y_cur
j += 1
return Point(x_cur, y_cur) # last point of chain
def on_death(self):
self.lives -= 1
if self.lives == 0:
self.world.window.handler = self.world.source
else:
self.vel.x = 0
self.vel.y = 0
if self.desired_platform is None:
self.pos = Vector(PLAYER_RESPAWN_X_OFFSET, -self.size.y)
else:
bounds = self.desired_platform.get_bounds()
if bounds.max.x <= 0:
self.pos = Vector(PLAYER_RESPAWN_X_OFFSET, -self.size.y)
else:
# Place player on platform they last touched
self.pos = Vector(
bounds.max.x - self.size.x - PLAYER_RESPAWN_X_OFFSET,
bounds.min.y - self.size.y)
self.is_dying = False
def bezier_3_spline(m, p):
"""
Given m+1 interpolation points, determine the m-segment,
Bezier polyline that interpolates these points.
Unlike the C-function, this returns a list of the
beizer control points used to represent the spline.
Further comments are in the accompanying C-file.
Coded in Python: 06-Dec-2004
"""
assert len(p) >= (m + 1)
if m <= 0:
print 'Cannot attempt to find a Bezier representation'
print 'with ', m, ' segments.'
return 'FAIL'
tolerance = 1.0e-10
# Setup the initial guess for the weight points by using the
# supplied points. This also sets the end points correctly.
d = []
for node in p:
# Use a Vector object which will not be stored in the Node.nodeList.
d.append(Vector(node.x, node.y, node.z))
# Apply the Gauss-Seidel interation until the internal
# weight points converge.
for j in range(50):
max_diff = 0.0
for i in range(1, m):
old_p = d[i]
d[i].x = 0.25 * (6.0 * p[i].x - d[i - 1].x - d[i + 1].x)
d[i].y = 0.25 * (6.0 * p[i].y - d[i - 1].y - d[i + 1].y)
d[i].z = 0.25 * (6.0 * p[i].z - d[i - 1].z - d[i + 1].z)
dx = fabs(d[i].x - old_p.x)
dy = fabs(d[i].y - old_p.y)
dz = fabs(d[i].z - old_p.z)
diff = dx + dy + dz
if (diff > max_diff):
max_diff = diff
# end for i
if (max_diff < tolerance):
break
# end for j
if j >= 50:
print 'Iterations did not converge while using the Guass-Seidel technique'
print 'to find a bezier representation of a spline.'
return 'FAIL'
# Finally, calculate the Bezier segments an pack them away.
bcp = range(4 * m)
for i in range(m):
bcp[i * 4 + 0] = copy(p[i])
bcp[i * 4 + 1] = Vector()
bcp[i * 4 + 1].x = (2.0 * d[i].x + d[i + 1].x) / 3.0
bcp[i * 4 + 1].y = (2.0 * d[i].y + d[i + 1].y) / 3.0
bcp[i * 4 + 1].z = (2.0 * d[i].z + d[i + 1].z) / 3.0
bcp[i * 4 + 2] = Vector()
bcp[i * 4 + 2].x = (d[i].x + 2.0 * d[i + 1].x) / 3.0
bcp[i * 4 + 2].y = (d[i].y + 2.0 * d[i + 1].y) / 3.0
bcp[i * 4 + 2].z = (d[i].z + 2.0 * d[i + 1].z) / 3.0
bcp[i * 4 + 3] = copy(p[i + 1])
return bcp
def test_vector(self):
v1 = Vector(7, 4)
v2 = Vector(-6, 3)
self.assertEqual("%s" % v1, "Vector(7.0, 4.0)")
self.assertEqual("%s" % v2, "Vector(-6.0, 3.0)")
# length should be sqrt(7**2 + 4**2) = 8.062
self.assertAlmostEqual(v1.norm(), 8.062, places=3)
# Create a unit vector and test its length
v1u = v1.unit_vector()
self.assertAlmostEqual(v1u.norm(), 1.00, places=3)
v3 = v1 * 6.4
self.assertTrue(isinstance(v3, Vector))
# v3 length = 8.062(6.4) = 51.597
self.assertAlmostEqual(v3.norm(), 51.597, places=2)
# v1 + v2 = (1, 7); length = 7.071
v4 = v1 + v2
self.assertAlmostEqual(v4.norm(), 7.071, places=3)
# Dot product of v1, v2 = (7)(-6) + (4)(3) = -30
self.assertAlmostEqual(v1.dot(v2), -30.0, places=3)
self.assertAlmostEqual(v2.dot(v1), -30.0, places=3)
# Cross product of v1 x v2 = (7)(3) - (-6)(4) = 45
self.assertAlmostEqual(v1.cross(v2), 45.0, places=3)
# Cross product of v2 x v1 = (-6)(4) - (7)(3) = -45
self.assertAlmostEqual(v2.cross(v1), -45.0, places=3)
v5 = v1.perp()
self.assertAlmostEqual(v5[0], -4.0, places=3)
self.assertAlmostEqual(v5[1], 7.0, places=3)
class Level(object):
"""
A game level.
"""
def __init__(self, world: 'World', level: int, start_pos: Tuple[int, int],
scroll: Vector = Vector(0.05, 0)):
self.level = level
self.start_pos = Vector(
start_pos[0] * BLOCK_SIZE,
(GRID_SIZE[1] - start_pos[1] - 1) * BLOCK_SIZE
)
self.offset = Vector(0, 0)
self.scroll = scroll
self.items: List[LevelItem] = []
self.finished = False
self.counter = 0
self.world = world
self.world.source.last_active_level = self
self.window_size = world.window.get_size()
# Just some initialisation stuff here; less to compute later.
self.background_offset = self.window_size[0] / 2
self.background_image = load_image(LEVEL_BACKGROUND_IMAGE)
self.bg_size = (self.background_image.get_width(), self.background_image.get_height())
self.bg_center = (self.bg_size[0] / 2, self.bg_size[1] / 2)
def get_score(self):
return self.world.player.score
def add_item(self, item: LevelItem):
"""
Adds the item to the level.
"""
self.items.append(item)
def finish(self):
"""
Finishes the level.
"""
self.finished = True
def render(self, world: 'World', canvas: simplegui.Canvas):
"""
Called on every game tick to render the level.
"""
# Draw background
if LEVEL_USE_BACKGROUND:
center_dest1 = (
-(self.offset.x % self.window_size[0]) + self.background_offset,
self.window_size[1] / 2
)
center_dest2 = (
center_dest1[0] + self.window_size[0],
center_dest1[1]
)
canvas.draw_image(self.background_image, self.bg_center, self.bg_size,
center_dest1, self.window_size)
canvas.draw_image(self.background_image, self.bg_center, self.bg_size,
center_dest2, self.window_size)
self.counter += 1
if self.counter % BLOCK_SIZE == 0:
self.counter = 0
world.player.score += 1
dpi_factor = world.window.hidpi_factor
font = world.text_font
font_color = world.text_font_color
score_text = "SCORE // {0:d}".format(world.player.score)
lives_text = "LIVES // {0:d}".format(world.player.lives)
canvas.draw_text(score_text, (10 * dpi_factor, 20 * dpi_factor), font.get_size(),
str(font_color),
font.get_face())
canvas.draw_text(lives_text, (10 * dpi_factor, 40 * dpi_factor), font.get_size(),
str(font_color),
font.get_face())
# Render items
for item in self.items:
bounds = item.get_bounds()
if bounds.max.x > 0 and bounds.min.x < WINDOW_SIZE[0]:
item.render(canvas)
# Render player
world.player.render(canvas)
# Add the level scroll, mutating the current offset.
self.offset.add(self.scroll * BLOCK_SIZE)
# Load next level.
if self.finished:
levels = world.levels
next_level = self.level + 1
if len(levels) >= next_level:
target_level = levels[next_level - 1]
world.player.pos = target_level.start_pos
world.level = target_level
else:
world.level = None
def get_cursor_pos(self) -> Vector:
x, y = pygame.mouse.get_pos()
return Vector(x, y)
class Player(Renderable):
def __init__(self, world: 'World'):
super().__init__(world.window)
self.world = world
self.size = Vector(*PLAYER_SIZE)
self.pos = world.level.start_pos
self.last_pos = self.pos.copy()
self.last_x = 0
self.vel = Vector(0, 0)
self.accel = Vector(0, 0)
self.on_ground = False
self.jumping = False
self.moving_x = False
self.is_dying = False
self.desired_platform = None
self.score = 0
self.lives = 3
self.sprite_cols = 8
self.sprite = Sprite('assets/player.png', self.sprite_cols, 1)
self.roll = 0
def jump(self):
self.on_ground = False
self.vel.y = -PLAYER_VELOCITY[1]
self.accel.y = -ACCEL_GRAVITY
def get_bounds(self) -> BoundingBox:
pos = self.pos
size = self.size
return BoundingBox(pos, pos + size)
def get_render_bounds(self) -> BoundingBox:
bounds = self.get_bounds()
dpi_factor = self.window.hidpi_factor
return BoundingBox(bounds.min * dpi_factor, bounds.max * dpi_factor)
def on_key_down(self, key: int):
if not self.is_dying:
if key == Key.SPACE:
self.jumping = True # Allow holding jump button.
if self.on_ground:
self.jump()
elif key == Key.KEY_A:
self.vel.x = -PLAYER_VELOCITY[0]
elif key == Key.KEY_D:
self.vel.x = PLAYER_VELOCITY[0]
def on_key_up(self, key: int):
if not self.is_dying:
if key == Key.SPACE:
self.jumping = False
elif key == Key.KEY_A:
if self.vel.x < 0:
self.vel.x = 0
elif key == Key.KEY_D:
if self.vel.x > 0:
self.vel.x = 0
def on_death(self):
self.lives -= 1
if self.lives == 0:
self.world.window.handler = self.world.source
else:
self.vel.x = 0
self.vel.y = 0
if self.desired_platform is None:
self.pos = Vector(PLAYER_RESPAWN_X_OFFSET, -self.size.y)
else:
bounds = self.desired_platform.get_bounds()
if bounds.max.x <= 0:
self.pos = Vector(PLAYER_RESPAWN_X_OFFSET, -self.size.y)
else:
# Place player on platform they last touched
self.pos = Vector(
bounds.max.x - self.size.x - PLAYER_RESPAWN_X_OFFSET,
bounds.min.y - self.size.y)
self.is_dying = False
def render(self, canvas: simplegui.Canvas):
bounds = self.get_bounds()
dpi_factor = self.window.hidpi_factor
# Draw player.
if PLAYER_POTATO:
dest_center = self.pos + self.size / 2
index = (self.roll // self.sprite_cols) % self.sprite_cols
self.sprite.draw(canvas, dest_center * dpi_factor,
self.size * dpi_factor, (index, 0))
else:
point_list = [p.multiply(dpi_factor).into_tuple() for p in bounds]
color = Color(120, 120, 200)
canvas.draw_polygon(point_list, 1, str(color), str(color))
# Update position.
self.last_pos = self.pos.copy()
self.pos.add(self.vel)
self.roll += self.vel.x * 2 / PLAYER_VELOCITY[0]
self.roll += 1
if abs(self.vel.x) > PLAYER_VELOCITY[0]:
self.vel.x = math.copysign(PLAYER_VELOCITY[0], self.vel.x)
# Check collisions position.
self.on_ground = False
bounds = self.get_bounds()
if not self.is_dying:
for item in self.world.level.items:
if item.collides_with(bounds):
item.on_collide(self)
self.vel.add(self.accel)
# Do gravity and platform collision.
if self.on_ground:
self.vel.y = 0
self.accel.y = 0
else:
self.accel.y = -ACCEL_GRAVITY
if bounds.max.y >= WINDOW_SIZE[1] or bounds.min.x <= 0:
self.on_death()