So, the game I trying to make is an action platform (like a Castlevania), and in the combat system I want to make an arc-shaped collision, and make it appears in front of the player hitbox (like a sword swiping down) when the attack button is pressed, and when the button is released, make that collision disappears, I have no idea how I can do this.
Until now I am using the "Winfield" library to build all the physics, but if you guys know a better library, I'd like to experiment

Btw, English is not my first language, so sorry if I didn't made clear what I am trying to say.