public virtual void update(Bullet_motor motor)
{
float time = current_life_span / life_span;
motor.desire_speed =
speed_over_life_span.Evaluate(time) * max_speed;
}
public virtual void start(Bullet_motor motor)
{
var transform = motor.transform;
var rotation_to_current_direction =
Quaternion.Euler(motor.desire_direction);
var rotation_to_add_angle = Quaternion.Euler(0, rotate_angle_on_start, 0);
motor.desire_direction =
(rotation_to_current_direction * rotation_to_add_angle)
* motor.desire_direction;
}
public virtual void prepare(Bullet_motor motor)
{
if (use_max_speed)
{
max_speed = motor.max_speed;
}
else
{
max_speed = motor.desire_speed;
}
}