def birth_babies(self):
'''
Once this asteroid has been hit, before it is removed from the asteroid list, call
this function and it will return the two child asteroids (if it is a large or medium asteroid)
with the correct velocity / momentum / ect. or it will return nothing if the asteroid cannot be broken anymore
'''
convFactor = math.pi / 180
theta_1 = 45
theta_2 = 315
# No need to translate because the directions are already based on the 0,0 origin
# Asteroid Baby 1
new_x_1 = self.direction.x * math.cos(
theta_1 * convFactor) - self.direction.y * math.sin(
theta_1 * convFactor)
new_y_1 = self.direction.x * math.sin(
theta_1 * convFactor) + self.direction.y * math.cos(
theta_2 * convFactor)
# Asteroid Baby 2
new_x_2 = self.direction.x * math.cos(
theta_2 * convFactor) - self.direction.y * math.sin(
theta_2 * convFactor)
new_y_2 = self.direction.x * math.sin(
theta_2 * convFactor) + self.direction.y * math.cos(
theta_2 * convFactor)
dir1 = Vector((new_x_1, new_y_1))
dir2 = Vector((new_x_2, new_y_2))
dir1 = dir1._mult(ASTEROID_BREAK_SPEED_FACTOR)
dir2 = dir2._mult(ASTEROID_BREAK_SPEED_FACTOR)
# Create dummy babies with dummy position lists (alter code later to avoid needing this)
dummy_positions = [0, 1, 2]
dummy_positions = (dummy_positions, dummy_positions)
new_size = self.size - 1
baby_1, baby_2 = Asteroid(dummy_positions,
size=new_size), Asteroid(dummy_positions,
size=new_size)
baby_1.location = self.location
baby_2.location = self.location
baby_1.direction = dir1
baby_2.direction = dir2
baby_1.x_class = baby_1.direction.classify_direction(direction='x')
baby_1.y_class = baby_1.direction.classify_direction(direction='y')
baby_2.x_class = baby_2.direction.classify_direction(direction='x')
baby_2.y_class = baby_2.direction.classify_direction(direction='y')
return baby_1, baby_2
