def draw_polyline_nice_corners(cr,
points,
arrow_degrees,
arrow_len,
arrow_start=False,
arrow_end=False):
ex, ey = points[-1]
prev = points[0]
if arrow_start:
cr.move_to(prev[0], prev[1])
draw_arrow(cr, utils.make_vector(points[1], points[0]), arrow_degrees,
arrow_len)
cr.move_to(prev[0], prev[1])
for i in xrange(1, len(points) - 1):
a = utils.make_vector(points[i - 1], points[i])
b = utils.make_vector(points[i], points[i + 1])
la = utils.vector_len(a)
lb = utils.vector_len(b)
if la < 0.01 or lb < 0.01:
continue
v = utils.vector_mul_scalar(utils.normalize_vector(a), min(la, 20.0))
w = utils.vector_mul_scalar(utils.normalize_vector(b), min(lb, 20.0))
t = utils.vector_diff(points[i], v)
cr.line_to(t[0], t[1])
cr.rel_curve_to(v[0], v[1], v[0], v[1], v[0] + w[0], v[1] + w[1])
cr.line_to(ex, ey)
cr.stroke()
if arrow_end:
cr.move_to(ex, ey)
draw_arrow(cr, utils.make_vector(points[-2], points[-1]),
arrow_degrees, arrow_len)
def draw_polyline_nice_corners(cr, points, arrow_degrees, arrow_len, arrow_start = False, arrow_end = False):
ex, ey = points[-1]
prev = points[0]
if arrow_start:
cr.move_to(prev[0],prev[1])
draw_arrow(cr, utils.make_vector(points[1], points[0]), arrow_degrees, arrow_len)
cr.move_to(prev[0],prev[1])
for i in xrange(1, len(points) - 1):
a = utils.make_vector(points[i-1], points[i])
b = utils.make_vector(points[i], points[i + 1])
la = utils.vector_len(a)
lb = utils.vector_len(b)
if la < 0.01 or lb < 0.01:
continue
v = utils.vector_mul_scalar(utils.normalize_vector(a), min(la, 20.0))
w = utils.vector_mul_scalar(utils.normalize_vector(b), min(lb, 20.0))
t = utils.vector_diff(points[i], v)
cr.line_to(t[0], t[1])
cr.rel_curve_to(v[0], v[1], v[0], v[1], v[0] + w[0], v[1] + w[1])
cr.line_to(ex,ey)
cr.stroke()
if arrow_end:
cr.move_to(ex, ey)
draw_arrow(cr, utils.make_vector(points[-2], points[-1]), arrow_degrees, arrow_len)
def generate(self, space_game, ship):
# def create_enemy_star(self):
self.enemies = []
self.x = randint(100, CANVAS_WIDTH - 100)
self.y = randint(100, CANVAS_HEIGHT - 100)
while vector_len(self.x - self.ship.x, self.y - self.ship.y) < 200:
self.x = randint(100, CANVAS_WIDTH - 100)
self.y = randint(100, CANVAS_HEIGHT - 100)
for d in range(18):
self.dx, self.dy = direction_to_dxdy(d * 20)
self.enemy = Enemy(self, self.x, self.y,
self.dx * ENEMY_BASE_SPEED,
self.dy * ENEMY_BASE_SPEED)
self.enemies.append(self.enemy)
return self.enemies
# def create_enemy_from_edges(self):
self.x, self.y = random_edge_position()
self.vx, self.vy = normalize_vector(self.ship.x - self.x,
self.ship.y - self.y)
self.vx *= ENEMY_BASE_SPEED
self.vy *= ENEMY_BASE_SPEED
self.enemy = Enemy(self, self.x, self.y, self.vx, self.vy)
return [self.enemy]
def generate(self, space_game, ship):
enemies = []
x = randint(100, CANVAS_WIDTH - 100)
y = randint(100, CANVAS_HEIGHT - 100)
while vector_len(x - ship.x, y - ship.y) < 200:
x = randint(100, CANVAS_WIDTH - 100)
y = randint(100, CANVAS_HEIGHT - 100)
for d in range(18):
dx, dy = direction_to_dxdy(d * 20)
enemy = Enemy(space_game, x, y, dx * ENEMY_BASE_SPEED, dy * ENEMY_BASE_SPEED)
enemies.append(enemy)
return enemies
def create_enemy_star(self):
enemies = []
x = randint(100, CANVAS_WIDTH - 100)
y = randint(100, CANVAS_HEIGHT - 100)
while vector_len(x - self.ship.x, y - self.ship.y) < 200:
x = randint(100, CANVAS_WIDTH - 100)
y = randint(100, CANVAS_HEIGHT - 100)
for d in range(18):
dx, dy = direction_to_dxdy(d * 20)
enemy = Enemy(self, x, y, dx * ENEMY_BASE_SPEED, dy * ENEMY_BASE_SPEED)
enemies.append(enemy)
return enemies
def generate(self, space_game, ship):
self.enemies = []
self.x = randint(100, CANVAS_WIDTH - 100)
self.y = randint(100, CANVAS_HEIGHT - 100)
while vector_len(self.x - self.ship.x, self.y - self.ship.y) < 200:
self.x = randint(100, CANVAS_WIDTH - 100)
self.y = randint(100, CANVAS_HEIGHT - 100)
for d in range(18):
self.dx, self.dy = direction_to_dxdy(d * 20)
self.enemy = Enemy(self, self.x, self.y,
self.dx * ENEMY_BASE_SPEED,
self.dy * ENEMY_BASE_SPEED)
self.enemies.append(self.enemy)
return self.enemies
def generate(self, space_game, ship):
## ##
# TODO: extracted from method create_enemy_star
self.ship = ship
enemies = []
x = randint(100, CANVAS_WIDTH - 100)
y = randint(100, CANVAS_HEIGHT - 100)
while vector_len(x - self.ship.x, y - self.ship.y) < 200:
x = randint(100, CANVAS_WIDTH - 100)
y = randint(100, CANVAS_HEIGHT - 100)
for d in range(18):
dx, dy = direction_to_dxdy(d * 20)
enemy = Enemy(self.ship, x, y, dx * ENEMY_BASE_SPEED, dy * ENEMY_BASE_SPEED)
enemies.append(enemy)
return enemies
