void StraightMovement::set_speed_y(double speed_yy) {
if(std::fabs(speed_yy) <= 1E-6) {
speed_yy = 0;
}
this->speed_y = speed_yy;
uint32_t now = System::now();
// compute delay_x, move_x, next_move_date_x.
if(speed_y > 0) {
this->delay_y = (uint32_t) (1000 / this->speed_y);
move_y = 1;
set_next_move_date_y(now + delay_y);
} else if(speed_y < 0) {
this->delay_y = (uint32_t) (-1000 / this->speed_y);
move_y = -1;
set_next_move_date_y(now + delay_y);
} else {
move_y = 0;
}
this->angle = Geometry::get_angle(0.f, 0.f, speed_x * 100, speed_y * 100);
start_xy.set_xy(get_xy());
this->finished = false;
if(get_entity() != NULL) {
get_entity()->notify_movement_changed();
}
}
/**
* @brief Sets the y speed.
* @param y_speed the y speed of the object in pixels per second
*/
void StraightMovement::set_y_speed(double y_speed) {
if (std::fabs(y_speed) <= 1E-6) {
y_speed = 0;
}
this->y_speed = y_speed;
uint32_t now = System::now();
// compute y_delay, y_move and next_move_date_y
if (y_speed == 0) {
y_move = 0;
}
else {
if (y_speed > 0) {
y_delay = (uint32_t) (1000 / y_speed);
y_move = 1;
}
else {
y_delay = (uint32_t) (1000 / (-y_speed));
y_move = -1;
}
set_next_move_date_y(now + y_delay);
}
angle = Geometry::get_angle(0, 0, (int) (x_speed * 100), (int) (y_speed * 100));
initial_xy.set_xy(get_xy());
finished = false;
notify_movement_changed();
}
