How do I do a weapon swap like Megaman or Indivisible?

I'm sure mostly all of anyone reading this knows the games Megaman and Indivisible so you'll know you are able to switch freely between weapons and power-ups. I am making a platformer, metroidvania level inspired by Indivisible for college and I've gotten quite far with it, but one thing that I can't figure out is how to change weapons like Megaman or Indivisible.

I haven't even figured out how to make my character preform an attack. Please help me!

it's just a matter of assigning an instance variable WEAPONS to your character sprite and switching in between values.

So when I add the instance variable to my character sprite how do I make it switch in between values?

You add the condition you want. As action you choose youre player and than there you can choose between add to value, set value and so one. Verry simple. I hope i answered your question.

So when I add the instance variable to my character sprite how do I make it switch in between values?

It's up to you really.

Press of a key, touch of a button on screen...

Try these:

[Your condition] | Add 1 to Player.Weapon

[Your condition] | Subtract 1 from Player.Weapon

[Your condition] | Set Player.Weapon to [your number of choice]

nice