void StraightMovement::set_speed_x(double speed_xx) {
if(std::fabs(speed_xx) <= 1E-6) {
speed_xx = 0;
}
this->speed_x = speed_xx;
uint32_t now = System::now();
// compute delay_x, move_x, next_move_date_x.
if(speed_x > 0) {
this->delay_x = (uint32_t) (1000 / this->speed_x);
move_x = 1;
set_next_move_date_x(now + delay_x);
} else if(speed_x < 0) {
this->delay_x = (uint32_t) (-1000 / this->speed_x);
move_x = -1;
set_next_move_date_x(now + delay_x);
} else {
move_x = 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 x speed.
* @param x_speed the x speed of the object in pixels per second
*/
void StraightMovement::set_x_speed(double x_speed) {
if (std::fabs(x_speed) <= 1E-6) {
x_speed = 0;
}
this->x_speed = x_speed;
uint32_t now = System::now();
// compute x_delay, x_move and next_move_date_x
if (x_speed == 0) {
x_move = 0;
}
else {
if (x_speed > 0) {
x_delay = (uint32_t) (1000 / x_speed);
x_move = 1;
}
else {
x_delay = (uint32_t) (1000 / (-x_speed));
x_move = -1;
}
set_next_move_date_x(now + x_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();
}
