I just checked and it's not included because it doesn't do anything for you, as a student. We use it to update the flame sprites behind the ship. I'll update this to remove the setter in the next update. Here's the code
func _set_speed(value: float) -> void: _speed = value var speed_ratio := Vector2.ONE * _speed/SPEED_MAX _flame_main.scale = speed_ratio _flame_left.scale = speed_ratio * 0.35 _flame_right.scale = speed_ratio * 0.35
Note, as you can see, this is not a step-by-step tutorial or a course with chapters. The idea is we focus on showing you what's important to understand how this mechanic or use case work, and try to remove all the surrounding noise.
Anyway thanks for the heads up, this needs some tweaking.