def computeMotion(self):
"""Find the motion of a planet with its distance and its mass."""
angle = random.uniform(0, 2 * math.pi)
norm = self.distance
position = Vector.createFromPolar(norm, angle)
angle = (angle + math.pi / 2) % (2 * math.pi)
norm = self.speed # in m/s-1
velocity = Vector.createFromPolar(norm, angle)
acceleration = Vector.null()
return Motion(position, velocity, acceleration)
def __call__(self, position, velocity, born):
"""Return a missile with the same motion."""
s = SegmentAnatomy.createFromTuples((0, 0), (1, 0))
s.angle = velocity.angle
m = Motion(copy.deepcopy(position), copy.deepcopy(velocity))
m.position += Vector.createFromPolar(born + 1, velocity.angle)
m.velocity.norm += self.speed
self.shooting = False
return [self.type(s, [m], damage=self.damage, duration=self.duration)]
def show(self, context, point=Point(0, 0), angle=0):
"""Show the moment."""
if len(self) >= 1:
mp = self.position
v = Vector.createFromPolar(mp.norm, angle)
v.color = mp.color
v.show(context, point)
if len(self) >= 2:
angle += math.pi / 2
mv = self.velocity
v = Vector.createFromPolar(mv.norm, angle)
v.color = mv.color
v.show(context, point)
if len(self) >= 3:
angle += math.pi / 2
ma = self.acceleration
a = Vector.createFromPolar(ma.norm, angle)
a.color = ma.color
a.show(context, point)
def shoot(self):
"""Return a missile with the same motion."""
shooted = []
for i in range(self.n):
anatomy = SegmentAnatomy.createFromTuples((0, 0), (1, 0))
angle = self.shooting_view * i / self.n
anatomy.rotate(self.velocity.angle + angle)
m = Motion(copy.deepcopy(self.position),
copy.deepcopy(self.velocity))
m.position += Vector.createFromPolar(self.born + 1,
m.velocity.angle)
m.velocity.norm += self.shooting_speed
shooted.append(SegmentMissile(a, m))
return shooted
def __call__(self, position, velocity, born):
"""Return a missile with the same motion."""
self.shooting = False
shooted = []
for i in range(self.n):
s = SegmentAnatomy.createFromTuples((0, 0), (1, 0))
s.angle = velocity.angle
angle = self.view * i / self.n
s.rotate(velocity.angle + angle)
m = Motion(copy.deepcopy(position), copy.deepcopy(velocity))
m.position += Vector.createFromPolar(born + 1, m.velocity.angle)
m.velocity.norm += self.speed
shooted.append(self.type(s, [m]))
return shooted
def getVector(self):
"""Return the vector associated with the rotation of the particle."""
angle = self.angle[0]
angle %= (2 * math.pi)
return Vector.createFromPolar(1, angle)
