Implement Slash or sword attack like in Ninja Squid

[Zerokami]

Nija Squid is MIT.

https://github.com/securas/ninja-squid

[henriiquecampos]

Awesome reference, but for this template I'm following a more Megaman/Kirby-ish reference for combat features, what do you think about Zero's sword attack, or Kirby's?

[Zerokami]

Zero's attack is easier and simple.

Kirby's move seems to be a lot complicated like in a fighting game.

It's better to have a normal sword slice similar to the Zero one and Ninja Squid one.

I think the Ninja Squid is heavily influenced by Zero.