An example of how sword engines shouldn't be made anymore. The sword basically just appears and disappears in front of the player and a robot teleports under the overlay, shooting in the direction it is thrusted. This results in all kinds of comical errors like parts of the board being like solids and robots being overwritten when the player stabs horizontally, and how despite it being a HUGE SWORD WOO WOO WOO, it only hits one enemy (unless you stand really close, and then the robot overwrites the one standing beside the player). You can also see the bullets at the tip of the blade before they get deleted, sometimes. I would recommend against basing any modern engine off of this.